Part 2:
a) If the cells are changing in the fishes' gills, they are proberably not working efficiently enough to keep them alive.
b) If i am a scientist I would first gather data about the number of fish dying and the types of species affected. I would also collect information about the changes in the PH of the lake aswell as the changes in salinity and temperature, aswell as any toxins entering the lake and compare these values with any recorded data from the past. I would also check to see if this type of problem has previously occured by checking records from the fisheries department aswell as surveying any locals.
By Jasmine Miller :)
Wednesday, September 26, 2007
Excercises pg 251 question 2
Why would these changes kill the fish?
The fish are dying because both there organs and gills are trying to adapt (change), there environment. This is because the water is becoming more and more salty which the fish aren't use to which then results in them dying.
If you were a scientist investigating the fish kill, where would you start and how would you go about the investigation?
Firstly I would start at the lake, testing the salt level of the water which could be effecting the fish.and also the amount of phosphates entering the lake. last of all I would get one of the fish and see what is happening with its organs and gills by dissecting it.
BY Adam Scholz
The fish are dying because both there organs and gills are trying to adapt (change), there environment. This is because the water is becoming more and more salty which the fish aren't use to which then results in them dying.
If you were a scientist investigating the fish kill, where would you start and how would you go about the investigation?
Firstly I would start at the lake, testing the salt level of the water which could be effecting the fish.and also the amount of phosphates entering the lake. last of all I would get one of the fish and see what is happening with its organs and gills by dissecting it.
BY Adam Scholz
Tuesday, September 25, 2007
TASK CARD EIGHT
Producer>first consumer>second consumer>third consumer
oh my god i forgot to draw the producer!
by Daniel
task card 12 question 1
in an urban ecosystem the humans control it alot more, we farm our food and have water stored for us but in a natural ecosystem the animals have no control over what happens and have to find food and water for themselves. and they have to protect them selves from other animals.
the picture is of a natural ecosystem in the ocean. it has fis and coral which is the place where fish live and eat.
By ross and jacob
Task card eight - Ecosystem Earth
What is the difference between first, second and third order consumers?The first order consumer be insects, small animals like fish and bugs so the second order consumer would be something that eat or live off the first order consumer so that would be birds, small or medium size fish, smalls mammals (kangaroo). The third order consumer’s food is mainly base on meat so it would be lion, tiger, humans, shark.
http://images.google.com.au/imgres?imgurl=http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/deciduous/decfor/dec-py.gif&imgrefurl=http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/deciduous/decpy.html&h=663&w=563&sz=50&hl=en&start=1&um=1&tbnid=dd0gV8r_THjQDM:&tbnh=138&tbnw=117&prev=/images%3Fq%3DEnergy%2Bpyramid%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DNe.com.au/imgres?imgurl=http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/deciduous/decfor/dec-py.gif&imgrefurl=http://curriculum.calstatela.edu/courses/builders/lessons/less/biomes/deciduous/decpy.html&h=663&w=563&sz=50&hl=en&start=1&um=1&tbnid=dd0gV8r_THjQDM:&tbnh=138&tbnw=117&prev=/images%3Fq%3DEnergy%2Bpyramid%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DN
What is a trophic level?
A tropic level is different categorizer’s name in a pyramid where it illustrates the first, second and third order consumer and each of them is a different tropic level.
A tropic level is different categorizer’s name in a pyramid where it illustrates the first, second and third order consumer and each of them is a different tropic level.
By Ta Thach and David Dikih.Prey and predators
Hi
two examples from the diagram of predators is edible crab and herring gull, and 2 examples from the diagram of prey is worm and seaweeds
By Jack
two examples from the diagram of predators is edible crab and herring gull, and 2 examples from the diagram of prey is worm and seaweeds
By Jack
what happens to the amount of energy as it travels through an ecosystem?
As the energy travels through an energy pyramid it decreases as most of is released as waste and respiration by the other organisms in the energy pyramid.
by luc and alek
Carbon Cycle - Task card 10
..The carbon cycle..
1.
All living things are made up of carbon, it is part of the ocean, air, animals, humans and surprisingly even rocks. Because the Earth is a dynamic place, carbon does not stay still. It is always on the move!
- The full name for Carbon is Carbon Dioxide. -
The carbon dioxide molecule consists of one Carbon atom and two oxygen atoms.
The carbon cycle is the name given to the system in which carbon fits into our world. Basically, Plants use carbon and sunlight to make their own food to grow, The carbon becomes part of the plant. This is why tree's are important in our world because they are practically carbon eaters and oxygen distrabuters. However, when plants die and are decomposed, the carbon that was once trapped in the tree, is let out again and goes back into the earth. When deforostation takes place, a large amount of Carbon is released into the environment all at once which is bad because there is now more carbon and less oxygen being produced. When trees fall and get buried under the ground they slowly turn into fossil fuels made up of carbon like coal and oil, this process happens over millions of years. When humans burn fossil fuels, most of the carbon that has been buried under the ground for millions of years quickly enters the atmosphere as carbon dioxide. (and thats just the cycle for plants and trees)
Every living and non living thing in our world is or produces carbon.........(((will finish next lesson!!!)))
Exercises 4,5,6page 252
4) in an urban ecosystem the humans controll it alot more, we farm our food and have water stored for us but in a natural ecosystem the animals have no control over what happens and have to find food and water for themselves. and they have to protect them selves from other animals.
5)some plants might grow better in higher temp
eratures and cause them to overbreed or even out breen the plants whic dont do very well in heat.
6) the amount of insects decreased when alot of trees and bushes were planted because there is more room for animals to come and live in this ecosystem. The insects being at the bottom of the food chain are now being eaten by all the new predators like birds.
ROSS & JACOB
5)some plants might grow better in higher temp
eratures and cause them to overbreed or even out breen the plants whic dont do very well in heat.
6) the amount of insects decreased when alot of trees and bushes were planted because there is more room for animals to come and live in this ecosystem. The insects being at the bottom of the food chain are now being eaten by all the new predators like birds.
ROSS & JACOB
what does a decomposer do?
we define a decomposer to be an organism normally a bacteria or fungus that eats on and decomposes dead animal or plant matter.
by luc and alek
eating habits
No offence intended. if you are offended I will change it.
Herbivores (human name: vegans) these creatures eat only plants(producers) and are first order consumers e.g. deer
Omnivores (human name: every day humans) these creatures eat both plants and meats e.g. most humans
Carnivores (human name: meat lovers) these creatures are the top of the food chain and eat only meat. they are 3rd order consumers e.g. lions and sharks.
remember no offence intended
Sam and Jack (Kirky)
Herbivores (human name: vegans) these creatures eat only plants(producers) and are first order consumers e.g. deer
Omnivores (human name: every day humans) these creatures eat both plants and meats e.g. most humans
Carnivores (human name: meat lovers) these creatures are the top of the food chain and eat only meat. they are 3rd order consumers e.g. lions and sharks.
remember no offence intended
Sam and Jack (Kirky)
Task card 4
[[Carnivores, omnivores, and herbivores.]]
What are they?
A herbivore is an animal that gets its energy from eating plants, and only plants.
Many herbivores have special digestive systems that let them digest all kinds of plants, including grasses.
A omnivore can also eat parts of plants, but generally only the fruits and vegetables produced by fruit-bearing plants.
Herbivores need a lot of energy to stay alive. Many of them like cows and sheep eat all day long.
There should be a lot of plants in your ecosystem to support your herbivores. If you put carnivores or some omnivores in your ecosystem, they'll eat your herbivores, so make sure you have enough herbivores to support them.
A shark i is a herbivore. The shark is at the top of the food chain. Other than seals sharks would eat squid, small whales, and fish. they would also eat humans if they saw you as thier prey.
BY AMI....
Q2 task card 3
this is a short answer question
the difference between a food chain and a food web is that a food chain shows how everything gets its food. a food web is a complex system of interconnected food chains and the flow of matter between organisims
from Sam
the difference between a food chain and a food web is that a food chain shows how everything gets its food. a food web is a complex system of interconnected food chains and the flow of matter between organisims
from Sam
equation for respiration
for this question we have to show an equation for respiration we found one for anaerobic respiration it is; Glucose -> lactic acid + energy = anaerobic respiration.
by luc and alek
by luc and alek
Task card 10
I am now doing task card 10.
Task card ten is about the carbon cycle. For this card i have to describe the carbon cycle, add in pictures, show how animals fit into this cycle and explain whether there would be carbon without humans. I also have to say what effect humans have and how much carbon they create into the environment and describe the relationship between the amount of carbon in the air and the earths temperature.
I will be putting all this information on another blog.
.Sophie.
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Task Card Four
1. A carnivore genarally eats herbivores, but they sometimes eat omnivores, they are important to any ecosystem, because they keep other species from getting overpopulated.
An omnivore eats plants and other animals, they are equally balanced, and are vital in the ecosystem.
An omnivore eats plants and other animals, they are equally balanced, and are vital in the ecosystem.
Herbivores get their energy from soley eating plants, keeping vegetation under control.
2. A shark is a carnivore it eats, fish, seals, squids some larger more hungrier sharks even prey on small whales.
3.
4. In the marine food chain the shark is at the top, it is the hunter, nothing can hunt it.
5.
6. As i stated before sharks eats seals, but their diet varies depending on their location and their hunger, they can eat fish, small whales, squid and even humans if they feel threatened or mistake you for a seal.
By Stefan Uzelac
Exercises page 251
a) The water in the lake is becoming saline due to the new channel which connects to the ocean.
b) The temperature of the water in the lake is most likely due to global warming.
c) There is very little water entering the lake because of the new damn build on the upper reaches of the river which reduces the flow of freash water that is used to flush out the lakes system. There is also very little rain running down from the hills in dry weather.
d) The algal blooms have been due to the ecxess of phosphates from nearby farms which cause the algea to grow rapidly. There is also an ecxess of food as the forests have been cleared killing the animals which now provide food for the algea.
e) The clearing of vegitation has caused soil to run into the stream as there are no roots to hold the soil in place which then causes the creeks to silt up.
Ross
b) The temperature of the water in the lake is most likely due to global warming.
c) There is very little water entering the lake because of the new damn build on the upper reaches of the river which reduces the flow of freash water that is used to flush out the lakes system. There is also very little rain running down from the hills in dry weather.
d) The algal blooms have been due to the ecxess of phosphates from nearby farms which cause the algea to grow rapidly. There is also an ecxess of food as the forests have been cleared killing the animals which now provide food for the algea.
e) The clearing of vegitation has caused soil to run into the stream as there are no roots to hold the soil in place which then causes the creeks to silt up.
Ross
Ecosystem earth
Task card seven
Will and I have to imagine that we are either an animal, plant or abiotic features.
I am a leaf swaying in the breeze on the tip of a great big tree. A strong gust of wind blows me off I float down to the ground. Waiting and waiting a catipillar comes a long a gobbles me up. As it climbs up the tree it creeps past a bird nest, but the mother bird catches it in the corner of her eye. The mother bird eats it and regurgitates it up feeding her little baby birds.
By Adam and Will
Will and I have to imagine that we are either an animal, plant or abiotic features.
I am a leaf swaying in the breeze on the tip of a great big tree. A strong gust of wind blows me off I float down to the ground. Waiting and waiting a catipillar comes a long a gobbles me up. As it climbs up the tree it creeps past a bird nest, but the mother bird catches it in the corner of her eye. The mother bird eats it and regurgitates it up feeding her little baby birds.
By Adam and Will
food chain definiton
this is my second task card. it is number 3, food chains
a food chain shows how each living organisim gets its food from the tieniest phytoplankton to largets carnivore. every animal is interconnected e.g.dinosaur times: plants grow and herbivores eat the plants, then they lay eggs and some ominivores will try to eat them but the parent will defend them yet some will get eaten but not all, the omnivore then will lay eggs and look after its kids, if neccesay they will eat them if the parents are trapped or are being hunted, then the carnivores eat the herbivors(mostly the sick and/or dying or dead) then the carnivors often die. the furthur up you go in the food chain the less of each type of animal there is.
Sam (kirky)
a food chain shows how each living organisim gets its food from the tieniest phytoplankton to largets carnivore. every animal is interconnected e.g.dinosaur times: plants grow and herbivores eat the plants, then they lay eggs and some ominivores will try to eat them but the parent will defend them yet some will get eaten but not all, the omnivore then will lay eggs and look after its kids, if neccesay they will eat them if the parents are trapped or are being hunted, then the carnivores eat the herbivors(mostly the sick and/or dying or dead) then the carnivors often die. the furthur up you go in the food chain the less of each type of animal there is.
Sam (kirky)
how do consumers release energy from the food they eat ?
From our research we have discovered that there are many ways in which consumers release energy. The ways they release energy include respiration, growth and waste.
by luc and alek
Why is it better for the environment if people use biodegradable cleaning products?
it is better for people to use biodegradable products as they dont take over a million years to degrade. it is also better to use biodegradable substances as they reduce land fill and don't attractas many wild animals
Jack
Jack
The Gippsland Lakes
a) We think that the reason why the lakes has become increasingly saline is because Lake Victoria was opened in the 1890's. From then on the salinity of the lake increased.
b) We think that some reasons the temperature of the water has been increasing is because of Global Warming, the mixture of water from the sea and because there are now less fish in the lake to disrupt the water, so it is not moving as much which means the sun has more time to heat it up.
c) The lack of rainfall is a main contributor to why there is not enough water running through the river.
d) Algal Blooms have increased becuase algae grows on the dead fish, which has also increased.
e) The lakes could have silted because lake Victoria is highly salty and therefore because it is connected to both Lake Wellington and Lake King, the water flows between them, making the other two lakes salty as well.
Shannon and Daley
a) We think that the reason why the lakes has become increasingly saline is because Lake Victoria was opened in the 1890's. From then on the salinity of the lake increased.
b) We think that some reasons the temperature of the water has been increasing is because of Global Warming, the mixture of water from the sea and because there are now less fish in the lake to disrupt the water, so it is not moving as much which means the sun has more time to heat it up.
c) The lack of rainfall is a main contributor to why there is not enough water running through the river.
d) Algal Blooms have increased becuase algae grows on the dead fish, which has also increased.
e) The lakes could have silted because lake Victoria is highly salty and therefore because it is connected to both Lake Wellington and Lake King, the water flows between them, making the other two lakes salty as well.
Shannon and Daley
Question 4 task card 2
Explain why so many trees are needed to support just one lion in the eco-system.
Trees provide food for the 1st level consumers which then feed the 2nd level. There must be alot of trees to feed all the 1st level consumers for them to survive. The lion being the 2nd level consumer doesnt eat all 1st level consumers and so therefore all those extra trees are to provide for other animals.
As shown in the book on page 245 it shows how a food web works and how many producers are needed to suport just one 3rd order consumer.
by jacob and ross
Explain why so many trees are needed to support just one lion in the eco-system.
Trees provide food for the 1st level consumers which then feed the 2nd level. There must be alot of trees to feed all the 1st level consumers for them to survive. The lion being the 2nd level consumer doesnt eat all 1st level consumers and so therefore all those extra trees are to provide for other animals.
As shown in the book on page 245 it shows how a food web works and how many producers are needed to suport just one 3rd order consumer.
by jacob and ross
Ecosystem Earth
TASK CARD ONE
This is the final product of Q 1,2,3
Ecosystem is the ecological unit consisting of a group of plants and living creatures interacting with each other and with their surroundings It is basically what makes a life in this world.
If u still not understand plz look at the picture below.
This is a holy food web
By Daniel
Ecosystem Earth
QUESTION 1 ON TASK CARD FIVE:
A decomposer is a animal or insect that brakes down or eats dead carcusas and poo from animals.
Some decomposers such as earthworms, flys and mugats mainly only eat dead carcusas.
But dung beetles and rhinos eat poo from animals.
QUESTION 2 ON TASK CARD FIVE:
This means that the ecosystem can survive fine on its on with out help from humans or man made this.
You never have to feed the life within the ecosystem.
QUESTION 3 ON TASK CARD FIVE:
The importance of decomposers is that if there isent any in the world the world would be covered in poo and dead living things. I think it can be self- sustaining without decomposers, but not for very long though.
QUESTION 4 ONTASK CARD FIVE:
A decomposer is a animal or insect that brakes down or eats dead carcusas and poo from animals.
Some decomposers such as earthworms, flys and mugats mainly only eat dead carcusas.
But dung beetles and rhinos eat poo from animals.
QUESTION 2 ON TASK CARD FIVE:
This means that the ecosystem can survive fine on its on with out help from humans or man made this.
You never have to feed the life within the ecosystem.
QUESTION 3 ON TASK CARD FIVE:
The importance of decomposers is that if there isent any in the world the world would be covered in poo and dead living things. I think it can be self- sustaining without decomposers, but not for very long though.
QUESTION 4 ONTASK CARD FIVE:
what are consumers?
our third question is ; what are consumers? we define consumers to be a heterotrophic organism that injests other organisms or organic matter in a food chain.
by luc and alek
by luc and alek
Ecosystem Earth
Me and Ta have task card eight.
First of all it asks us to post a definition of a first, second and third order consumer. It asks us to include appropiate pictures and diagrams. Second of all we have to do find out what a trophic level is, to draw up an energy pyramid for an African lion and label the pyramid with producers, first, second and third order consumers and also to give examples of all these levels.
First of all it asks us to post a definition of a first, second and third order consumer. It asks us to include appropiate pictures and diagrams. Second of all we have to do find out what a trophic level is, to draw up an energy pyramid for an African lion and label the pyramid with producers, first, second and third order consumers and also to give examples of all these levels.
TASK CARD ONE
Ecosystem Earth is the topic of our task card. (See above image!)
We are looking at what an ecosystem is and how it works.
1) What is an ecosystem??
An ecosystem is a complete community of living organisms and non-living materials of their surroundings. Which is usually filled with many types of plants as well as animals.
We are looking at what an ecosystem is and how it works.
1) What is an ecosystem??
An ecosystem is a complete community of living organisms and non-living materials of their surroundings. Which is usually filled with many types of plants as well as animals.
2) FOOD WEB :]
This food web shows the relationships and eating patterns between animals in an 'open forest' ecosystem.
An open forest is a forest where the trees are spaced apart and other plants and animals live on the ground between the trees.
3) FOOD CHAINS
*Owl Food Chain*
*Snake Food Chain*
Well thats our second task card done :]
Natalia & Ella
What does a habitat need to supply for animals to survive?
A habitat is more than just a home. It's the environment that supplies everything that living things need to survive.
For animals, their habitat must supply their food, water, air and space.
There are many different habitats on the Earth. These vary in the landforms, sources of water, and climate conditions. Plants and animals are specially adapted to live in their habitats. Animals suited to live in the desert would have a difficult time living in the tropical rain forest.
By Jack
For animals, their habitat must supply their food, water, air and space.
There are many different habitats on the Earth. These vary in the landforms, sources of water, and climate conditions. Plants and animals are specially adapted to live in their habitats. Animals suited to live in the desert would have a difficult time living in the tropical rain forest.
By Jack
Questions pge 251
a)Because it was open to sea lakes entrances in the 1980s. This is flushing lots of sea water making the lake more salty. Thats whats making it increasingly saline.
b)The lakes water temperature is increasing because of global warming so the temperature in the lakes system is rising.
c)This is because Australia is going through a drought and there is little rainfull to fill up lake Victoria so its becoming less water populated.
d)Vegetation has been removed for Animals creating a great environment for algal blooms. Due to ferteliser and temperature rise, also increases the number of algal blooms.
e) When trees get removed from the edge of creeks there are no roots to keep the soil in place so when it rains, the soil goes into the creeks and stops water from entering the lakes.
AMI!!!
a)Because it was open to sea lakes entrances in the 1980s. This is flushing lots of sea water making the lake more salty. Thats whats making it increasingly saline.
b)The lakes water temperature is increasing because of global warming so the temperature in the lakes system is rising.
c)This is because Australia is going through a drought and there is little rainfull to fill up lake Victoria so its becoming less water populated.
d)Vegetation has been removed for Animals creating a great environment for algal blooms. Due to ferteliser and temperature rise, also increases the number of algal blooms.
e) When trees get removed from the edge of creeks there are no roots to keep the soil in place so when it rains, the soil goes into the creeks and stops water from entering the lakes.
AMI!!!
Question 3 task card 2
What would happen to the food chain if the owl who is at the top became extinct?
If the owl were to become extinct there would be no predetors for the 2nd level consumers which would then cause them to over populate and create 2 possible problems. Either they could die out because there is not enough food for all of them or eat all lower order consumers forcing them to extinction. Leaving an overgrowth of producers which would not be used in the food chain anymore.
In conclusion if something leaves the food chain it will become unbalanced and eventually will be destroyed.
-ROSS & JACOB
What would happen to the food chain if the owl who is at the top became extinct?
If the owl were to become extinct there would be no predetors for the 2nd level consumers which would then cause them to over populate and create 2 possible problems. Either they could die out because there is not enough food for all of them or eat all lower order consumers forcing them to extinction. Leaving an overgrowth of producers which would not be used in the food chain anymore.
In conclusion if something leaves the food chain it will become unbalanced and eventually will be destroyed.
-ROSS & JACOB
The Gippsland Lakes Ecosystem
1. (a) the water in the lakes is becoming increasingly saline because lake victoria was opened to the sea in the 1890's.
(b) the temperature of the water is increasing because the soil from vegitation is making the lake smaller this increases the lakes temperature.
(c) there is very little water entering the lake because the thompson dam mainly supplies melbourne with water instead of the lake
(d) there has been an increase in algal blooms because the lake has had increase in phosphates and temperature in recent years.
(e) the creeks have silted up because of the soil run off from vegitation.
EXERCISES: CASE STUDY
THE GIPPSLAND ECOSYSTEM
1A) Due to Lake Victoria opening to the sea at Lakes Entrance in the 1980's, the fresh water from the lake has become increasingly saline.
B) Because of the increase in pollution and gases released into the atmosphere, global warming has occured, causing the temperature of the lakes to rise.
C) There is very little water entering Lake Victoria because there is very little rain falling and very dry weather.
D) There have been a number of algal blooms in the lake system causing the plants below to die because the sunlight cannot reach them and the algal bloom also takes over the plants.
E) Some of the creeks have silted up due to clearing of vegetation from the land in the catchment areas resulting in soil run-off and silting of the waterways.
BY CARAGH
THE GIPPSLAND ECOSYSTEM
1A) Due to Lake Victoria opening to the sea at Lakes Entrance in the 1980's, the fresh water from the lake has become increasingly saline.
B) Because of the increase in pollution and gases released into the atmosphere, global warming has occured, causing the temperature of the lakes to rise.
C) There is very little water entering Lake Victoria because there is very little rain falling and very dry weather.
D) There have been a number of algal blooms in the lake system causing the plants below to die because the sunlight cannot reach them and the algal bloom also takes over the plants.
E) Some of the creeks have silted up due to clearing of vegetation from the land in the catchment areas resulting in soil run-off and silting of the waterways.
BY CARAGH
Case Study- The Gippsland Lakes ecosystem
Exercises:
a) The lake is mixing with sea salt water and that is causing more saline.
b) I think it is because of the phosfate poured into the water which is rising the tempreture of the water.
c) This is because there is no rain and that stop the flow, flowing into the lake Victoria.
d) The algal blooms are spreading rapidly and taking up lots of floor ground at the bottom and top of the lake.
e) The soil is running of the sides of the river and is causing some of the creeks feed silted up.
By Tierney
a) The lake is mixing with sea salt water and that is causing more saline.
b) I think it is because of the phosfate poured into the water which is rising the tempreture of the water.
c) This is because there is no rain and that stop the flow, flowing into the lake Victoria.
d) The algal blooms are spreading rapidly and taking up lots of floor ground at the bottom and top of the lake.
e) The soil is running of the sides of the river and is causing some of the creeks feed silted up.
By Tierney
The difference between a food web and a food chain is...
A food web shows all the things that eat eachother and how they are all connected, a food web also includes plants . Whereas a food chain just shows the single link for what animals eat eachother in the order from weakest (bottom of the food chain) to the strongest which eats everything below it (usually humans)
Daley and Shannon
A food web shows all the things that eat eachother and how they are all connected, a food web also includes plants . Whereas a food chain just shows the single link for what animals eat eachother in the order from weakest (bottom of the food chain) to the strongest which eats everything below it (usually humans)
Daley and Shannon
water in the lakes system is increasing because soil run off is slitting the water way which makes the lake beco
smaller.
C There is very little water entering Lake Victoria. This is especially so during dry weather due to Thompson dam reduces the flow of fresh water that used to flush out the lake system to supply water to Melbourne.]
D There have been a number of algal blooms in the lake system because the increase of phosphates and the increase of lake temperature
E Some of the creeks that feed into the lake have silted up due the clearing vegetation from the land which cause soil run-off and silting the water way.
smaller.
C There is very little water entering Lake Victoria. This is especially so during dry weather due to Thompson dam reduces the flow of fresh water that used to flush out the lake system to supply water to Melbourne.]
D There have been a number of algal blooms in the lake system because the increase of phosphates and the increase of lake temperature
E Some of the creeks that feed into the lake have silted up due the clearing vegetation from the land which cause soil run-off and silting the water way.
The Gippsland Lakes
Excersises..
a)Because it was open to the sea lakes entrance in the 1980s. This is flushing lots of sea water making the lake salty.
b) The lakes water temperature is increasing due to global warming so the temperature is rising.
c) This is because Australia is going through a drought and there is very little rainfull to fill up lake Victoria.
d) This is because vegetation has been removed there for Animals die creating a great environment for algal blooms. Due to ferteliser and temperature rise, also increases the number of algal blooms.
e) When trees get removed from the edge of creeks there are no roots to keep the soil in place so when it rains, the soil goes into the creeks and stops water from entering the lakes.
Will.
Excersises..
a)Because it was open to the sea lakes entrance in the 1980s. This is flushing lots of sea water making the lake salty.
b) The lakes water temperature is increasing due to global warming so the temperature is rising.
c) This is because Australia is going through a drought and there is very little rainfull to fill up lake Victoria.
d) This is because vegetation has been removed there for Animals die creating a great environment for algal blooms. Due to ferteliser and temperature rise, also increases the number of algal blooms.
e) When trees get removed from the edge of creeks there are no roots to keep the soil in place so when it rains, the soil goes into the creeks and stops water from entering the lakes.
Will.
Task card twelve - Ecosystem Earth
1/Describing the difference between an urban ecosystem and natural ecosystem?
Ecosystem definition: A Natural Ecosystem is a community of living things (plants, microbial organisms, animals) and their interaction with non living things (sunlight, soil, wind, water) of the environment.
An Urban Ecosystem includes humans among the living organism, it also shows how humans build the structures among the non living things, for example: in an urban ecosystem, human influence ecological factors like plants and air and ecological factors also influence human’s decisions unlike Natural ecosystem is where ecosystem isn’t in the city or isn’t constructed by humans and in the natural environments like forest ecosystems, freshwater ecosystems, grassland ecosystems, and coastal ecosystems. For example: forest, ocean, lake.
An Urban ecosystem is the most common ecosystem to us because it is the community of plants, animals and humans that inhabits the urban environment where parks, yards and greenways are built whether in natural ecosystem, Forest ecosystem is the woodland where we can hike, cut down tree and hunt. Freshwater ecosystem is the lake, stream and rivers where we fish, and rely for water source. Grassland ecosystem is meadows, prairies, pampas, savannas, and steppes where we grow cattle. A coastal ecosystem is the beaches, the marine animals, the reefs and everything that is in the ocean.
Urban ecosystems are highly disturbed systems like the change in soil and plant and temperature and water availability and building structures dominated because the building structures affect the water flow of water or the type of soil and it is also where parks and yards are built. Urban ecosystems contribute their unique advantages and to the area. Advantages are: Shade and Temperature Control, air filtering, noise reduction, stormwater control, and biodiversity and wildlife habitat, recreation, aesthetic, and spiritual values, easier for food production wether Natural ecosystem provides us goods and services which form our economies like agriculture, forestry, and fishing. Natural ecosystem also provides us air and water, help to control our climate and produce soil.
Urban ecosystem is where industrialized societies, work, religious expression, and recreation often take place whether Natural ecosystems provide place for religious expression, aesthetic enjoyment, and recreation.
There are not really much things that threaten the urban ecosystem except for the growth of giant cities in cities like China whether there are many things that threaten the world‘s natural ecosystem like: Intensive and rapid urban growth, the increases of human’s consumption of food, water and other materials.
2/ What are biotic and abiotic environment factors? Give examples of each.
An ecosystem possesses living components (biotic factors) and nonliving (abiotic factor).
The living components of the environment are called biotic factors; they include all the living things that affect an organism. Producers, Consumers, and Decomposer are often be categorized as biotic components, EX: diseases, predators and competitors.
The nonliving factors are called Abiotic factors are chemical and Physical characteristic of the environment, EX: Solar Energy, oxygen, CO2, Water, temperature, humidity, ph and the nitrogen availability.
http://68.90.81.6/ScienceTAKS/ECOLOGY_files/image002.jpg
3/ Make a list of the biotic and abiotic factors which might affect the survival of a dingo in its natural habitat. Are these factors the same for a pet dog in a city suburb, or a working dog on a sheep farm? Explain your answer.
The list is at the top of the page due to technical difficulty.
Biotic factors which might affect the survival of a dingo in its natural habitat: In dingo’s natural habitat, dingo can be attack easily by other carnivore animals and the amount of food for dingo to find is not much, there are many diseases that could affect and easily kill a dingo in its natural habitat.
Abiotic factors which might affect the survival of a dingo in its natural habitat: In dingo’s natural habitat, the harsh temperature and the lack amount of water could affect the dingo’s life a lot, the amount of sunlight in dingo’s natural habitat could also heat up the dingo’s body temperature which cause it too get tired and lost body water faster, the amount of dust in the air the dingo breath also make it harder for the dingo to breath.
These factors are not the same for a pet dog in a city suburb or a working dog in a sheep farm because these dogs have enough water and food to eat and being feed constantly by its owner so it don’t have any problem to find food. These dogs don’t live in dingo’s natural habitat where it could be killed by the large amount of disease, harsh temperature (cold at nighttime, hot in daytime), and carnivore animals so its survival chance is higher. The air in the city and the farm don’t contain as much dust as the natural habitat where the dingo live, even there are more polluted air in the city than in the natural habitat.
4/ The biotic factors of the environment do not affect humans and domesticated animals such as dogs and cats as much as they affect other animals in natural ecosystems. Suggest why?
The biotic factors in of the environment include Producers, Consumers, and Decomposer.
For producer, animals in the natural environment have to share the same plant to eat and when there is drought they couldn’t eat anymore but in the city, human can just buy vegetables to eat from the shop for them and for their dog and cat pet.
For Consumers, animals in the natural environment have to consume each other to get the type of food they were to eat like a bird eating plant and then the foxes eating the bird which include a very small amount of plant inside the bird, whether in the city, human can just consume whatever the food they like by going to buy it from the shop, Ex: if human want to eat vegetable, they just buy and it unlike the fox have to eat the bird to have a small amount of vegetable.
For Decomposer, when animals in the habitat environment die, their bodies either being eat by other animals or being decompose into soil and food by bacteria, ants, worm, bugs. In the city when human die, they were put in the coffin which make it harder for the decomposing process when there is not much bacteria and other animals that can get in the coffin to decompose the body. In natural environment, if a carnivore catch and kill another animals, if it couldn’t finish consume the amount of meat of the other then the decomposer will finish it whether when human don’t finish their food, they can put it in the fridge or air seal it which slow down the time the bacteria decompose it and protect it from being decompose by other animals.
5/ List three ways an urban ecosystem is different from a natural ecosystem, for example a eucalypt forest ecosystem.
A swimming pool is in an urban ecosystem and is constructed by humans for swimming while the sea is in a natural ecosystem.
Buildings and cities are a part of an urban ecosystem while there are no buildings or cities in a natural ecosystem
Dog and cat pets live in an urban ecosystem while most of the other animals live in a natural ecosystem.
By Ta Thach and David Dikih
Ecosystem definition: A Natural Ecosystem is a community of living things (plants, microbial organisms, animals) and their interaction with non living things (sunlight, soil, wind, water) of the environment.
An Urban Ecosystem includes humans among the living organism, it also shows how humans build the structures among the non living things, for example: in an urban ecosystem, human influence ecological factors like plants and air and ecological factors also influence human’s decisions unlike Natural ecosystem is where ecosystem isn’t in the city or isn’t constructed by humans and in the natural environments like forest ecosystems, freshwater ecosystems, grassland ecosystems, and coastal ecosystems. For example: forest, ocean, lake.
An Urban ecosystem is the most common ecosystem to us because it is the community of plants, animals and humans that inhabits the urban environment where parks, yards and greenways are built whether in natural ecosystem, Forest ecosystem is the woodland where we can hike, cut down tree and hunt. Freshwater ecosystem is the lake, stream and rivers where we fish, and rely for water source. Grassland ecosystem is meadows, prairies, pampas, savannas, and steppes where we grow cattle. A coastal ecosystem is the beaches, the marine animals, the reefs and everything that is in the ocean.
Urban ecosystems are highly disturbed systems like the change in soil and plant and temperature and water availability and building structures dominated because the building structures affect the water flow of water or the type of soil and it is also where parks and yards are built. Urban ecosystems contribute their unique advantages and to the area. Advantages are: Shade and Temperature Control, air filtering, noise reduction, stormwater control, and biodiversity and wildlife habitat, recreation, aesthetic, and spiritual values, easier for food production wether Natural ecosystem provides us goods and services which form our economies like agriculture, forestry, and fishing. Natural ecosystem also provides us air and water, help to control our climate and produce soil.
Urban ecosystem is where industrialized societies, work, religious expression, and recreation often take place whether Natural ecosystems provide place for religious expression, aesthetic enjoyment, and recreation.
There are not really much things that threaten the urban ecosystem except for the growth of giant cities in cities like China whether there are many things that threaten the world‘s natural ecosystem like: Intensive and rapid urban growth, the increases of human’s consumption of food, water and other materials.
2/ What are biotic and abiotic environment factors? Give examples of each.
An ecosystem possesses living components (biotic factors) and nonliving (abiotic factor).
The living components of the environment are called biotic factors; they include all the living things that affect an organism. Producers, Consumers, and Decomposer are often be categorized as biotic components, EX: diseases, predators and competitors.
The nonliving factors are called Abiotic factors are chemical and Physical characteristic of the environment, EX: Solar Energy, oxygen, CO2, Water, temperature, humidity, ph and the nitrogen availability.
http://68.90.81.6/ScienceTAKS/ECOLOGY_files/image002.jpg
3/ Make a list of the biotic and abiotic factors which might affect the survival of a dingo in its natural habitat. Are these factors the same for a pet dog in a city suburb, or a working dog on a sheep farm? Explain your answer.
The list is at the top of the page due to technical difficulty.
Biotic factors which might affect the survival of a dingo in its natural habitat: In dingo’s natural habitat, dingo can be attack easily by other carnivore animals and the amount of food for dingo to find is not much, there are many diseases that could affect and easily kill a dingo in its natural habitat.
Abiotic factors which might affect the survival of a dingo in its natural habitat: In dingo’s natural habitat, the harsh temperature and the lack amount of water could affect the dingo’s life a lot, the amount of sunlight in dingo’s natural habitat could also heat up the dingo’s body temperature which cause it too get tired and lost body water faster, the amount of dust in the air the dingo breath also make it harder for the dingo to breath.
These factors are not the same for a pet dog in a city suburb or a working dog in a sheep farm because these dogs have enough water and food to eat and being feed constantly by its owner so it don’t have any problem to find food. These dogs don’t live in dingo’s natural habitat where it could be killed by the large amount of disease, harsh temperature (cold at nighttime, hot in daytime), and carnivore animals so its survival chance is higher. The air in the city and the farm don’t contain as much dust as the natural habitat where the dingo live, even there are more polluted air in the city than in the natural habitat.
4/ The biotic factors of the environment do not affect humans and domesticated animals such as dogs and cats as much as they affect other animals in natural ecosystems. Suggest why?
The biotic factors in of the environment include Producers, Consumers, and Decomposer.
For producer, animals in the natural environment have to share the same plant to eat and when there is drought they couldn’t eat anymore but in the city, human can just buy vegetables to eat from the shop for them and for their dog and cat pet.
For Consumers, animals in the natural environment have to consume each other to get the type of food they were to eat like a bird eating plant and then the foxes eating the bird which include a very small amount of plant inside the bird, whether in the city, human can just consume whatever the food they like by going to buy it from the shop, Ex: if human want to eat vegetable, they just buy and it unlike the fox have to eat the bird to have a small amount of vegetable.
For Decomposer, when animals in the habitat environment die, their bodies either being eat by other animals or being decompose into soil and food by bacteria, ants, worm, bugs. In the city when human die, they were put in the coffin which make it harder for the decomposing process when there is not much bacteria and other animals that can get in the coffin to decompose the body. In natural environment, if a carnivore catch and kill another animals, if it couldn’t finish consume the amount of meat of the other then the decomposer will finish it whether when human don’t finish their food, they can put it in the fridge or air seal it which slow down the time the bacteria decompose it and protect it from being decompose by other animals.
5/ List three ways an urban ecosystem is different from a natural ecosystem, for example a eucalypt forest ecosystem.
A swimming pool is in an urban ecosystem and is constructed by humans for swimming while the sea is in a natural ecosystem.
Buildings and cities are a part of an urban ecosystem while there are no buildings or cities in a natural ecosystem
Dog and cat pets live in an urban ecosystem while most of the other animals live in a natural ecosystem.
By Ta Thach and David Dikih
Excercises
1a) The lakes becoming more saline because it's open up to the sea at the enterance.
b) The temperature of the water in the lakes has increased because of human inflicted global warming.
c) There is little water entering the Lake Victoria, especially in dry weather. This is because the Thompson dam reduces the flow of fresh water thats used for Melbournes' water supply.
d) There have been algal booms in the lake ecosystem because the waters temperature has increased and phosphates, this creating the perfect coonditions for them produce and grow.
e) The reason the lakes have dried up is because of the dying plants, this causing the water way to silter.
1a) The lakes becoming more saline because it's open up to the sea at the enterance.
b) The temperature of the water in the lakes has increased because of human inflicted global warming.
c) There is little water entering the Lake Victoria, especially in dry weather. This is because the Thompson dam reduces the flow of fresh water thats used for Melbournes' water supply.
d) There have been algal booms in the lake ecosystem because the waters temperature has increased and phosphates, this creating the perfect coonditions for them produce and grow.
e) The reason the lakes have dried up is because of the dying plants, this causing the water way to silter.
By Stefan Uzelac
Gippsland Lakes ecosystem - Sophie
.Gippsland Lakes ecosystem.
1.
a) Because in the 1890's the lake was opened up to the sea which is constantly flushing in more and more salt water, there for making the lake increasingly more saline.
b) The temperature change could be due to global warming and temperature increase in the air.
c) When the Thompson damn begins to decrease in water levels due to the drought, then the water levels in the lake will be effected as well.
d) This could be due to the increasing temperature in the lakes water. Organisims and microbes grow much better in warm temperatures and algae is an organism, this is a very likely possibility for the algal blooms in the lake.
e) Because of all the clearing that has occured around the lake, corrosion happens which causes silt to form on the bottom of the lake. It is possible that it is the clearing of the trees from the lakes bank side that has caused the creeks to become silted up.
2.
a) I think that the fish's gills may have closed over vital breathing holes or filters which slowly caused the fish to die.
b) If I were a scientist, I would first, check back on past data to see the reccord of fish life in the lake, I would look at the data all the way up to the current year and work out what changes have happened. I would then take pH samples of the water and compare the pH of the water to the fish's life expectancy and the fish reccords. I would from there, try to determine what was killing the fish.
Sophie...
Case Study
Gippsland Lakes Ecosystem:
(a)In the 1890's lake Victoria was opened up into the sea, people also removed a lot of sand so that the lake could be deeper allowing more water collect. A man called Thompson Dam also built on the upper reaches of the lake reducing the amount of water getting through. As a result of this the only new water that comes through now days is salty sea water from the ocean that creates higher salinity levels.
(b)The temperature of the lake increasing does not have a known cause as yet however it could be as a result of global warming. What we do know is that higher temperatures can cause fish do die as they cannot cope with heat.
(c)The loss of water entering the lake is most likely a result of lack of rain and hot, dry weather. If there is no rain there is only a certain amount of water that is able to run into the lake and while the sun keeps evaporating water gradually, it some times does not give it back for a while.
(d)Hotter water is a better breeding ground for algal blooms however it is a worse breeding ground for fish. Algal Blooms are not good for fish and can invade the lakes habbitats.
(e)Some of the lakes have silted up because people have removed natural plants from the banks of the lake. These plants were keeping the soil on the banks however now that they are gone the soil easily runs into the lake creating a shallower catchment.
By CoCo!:)
(a)In the 1890's lake Victoria was opened up into the sea, people also removed a lot of sand so that the lake could be deeper allowing more water collect. A man called Thompson Dam also built on the upper reaches of the lake reducing the amount of water getting through. As a result of this the only new water that comes through now days is salty sea water from the ocean that creates higher salinity levels.
(b)The temperature of the lake increasing does not have a known cause as yet however it could be as a result of global warming. What we do know is that higher temperatures can cause fish do die as they cannot cope with heat.
(c)The loss of water entering the lake is most likely a result of lack of rain and hot, dry weather. If there is no rain there is only a certain amount of water that is able to run into the lake and while the sun keeps evaporating water gradually, it some times does not give it back for a while.
(d)Hotter water is a better breeding ground for algal blooms however it is a worse breeding ground for fish. Algal Blooms are not good for fish and can invade the lakes habbitats.
(e)Some of the lakes have silted up because people have removed natural plants from the banks of the lake. These plants were keeping the soil on the banks however now that they are gone the soil easily runs into the lake creating a shallower catchment.
By CoCo!:)
Case Study- The Gippsland Lakes ecosystem :]
Exercises Q1 / pg. 251
a..- The lake is becoming increasing saline because the water from the lake is mixing more and more with the sea water.
b..- I think that the temperature of the lake is increasing beacause of the drastic temperature rise in the atmosphere.
c..- There is very little water in the Lake Victoria in the dry season because there is less rain. These days there is much less rain because of global warming and temperatures rising
d..- There have been lots of algal blooms because this kind of environment is very nice for them to grow. They are a water plant so this ecosystem suits them fine.
e..- The lakes have silted up because the natural flow of the water has slightly collapsed the lakeside land and creates soil run-off.
:] ella
a..- The lake is becoming increasing saline because the water from the lake is mixing more and more with the sea water.
b..- I think that the temperature of the lake is increasing beacause of the drastic temperature rise in the atmosphere.
c..- There is very little water in the Lake Victoria in the dry season because there is less rain. These days there is much less rain because of global warming and temperatures rising
d..- There have been lots of algal blooms because this kind of environment is very nice for them to grow. They are a water plant so this ecosystem suits them fine.
e..- The lakes have silted up because the natural flow of the water has slightly collapsed the lakeside land and creates soil run-off.
:] ella
1/ Suggest inferences to explain the following observations.
1/
A/ The water in the lake is becoming increasingly saline because the lakes Victoria let sea water flow through its entrance.
B/ The temperature of the water in the lakes system is increasing because soil run off is slitting the water way which make the lake become smaller.
C/ There is very little water entering Lake Victoria. This is especially so during dry weather due to Thompson dam reduces the flow of fresh water that used to flush out the lake system to supply water to Melbourne.
D/ There have been a number of algal blooms in the lake system because the increase of phosphates and the increase of lake temperature.
E/ Some of the creeks that feed into the lake have silted up due the clearing vegetation from the land which cause soil run-off and silting the water way.
2/
a/ These changes kill the fish because the change in the cells have killed their function(breath).
b/ If i were a scietist investigatin the fish kill, i would started by find out what kill the fish, and then i would go to each lake and get a sample of the water and test the level of the chemical that kill the fish. I would start from the lake near the sea and move slowly forward to the top lake because the water flow down from there.
By Ta Thach.
A/ The water in the lake is becoming increasingly saline because the lakes Victoria let sea water flow through its entrance.
B/ The temperature of the water in the lakes system is increasing because soil run off is slitting the water way which make the lake become smaller.
C/ There is very little water entering Lake Victoria. This is especially so during dry weather due to Thompson dam reduces the flow of fresh water that used to flush out the lake system to supply water to Melbourne.
D/ There have been a number of algal blooms in the lake system because the increase of phosphates and the increase of lake temperature.
E/ Some of the creeks that feed into the lake have silted up due the clearing vegetation from the land which cause soil run-off and silting the water way.
2/
a/ These changes kill the fish because the change in the cells have killed their function(breath).
b/ If i were a scietist investigatin the fish kill, i would started by find out what kill the fish, and then i would go to each lake and get a sample of the water and test the level of the chemical that kill the fish. I would start from the lake near the sea and move slowly forward to the top lake because the water flow down from there.
By Ta Thach.
task card 11 Q6
hi
question 6 is explaining what a human habitat is.
humans live in urban ecosystems (cities, towns and villages). we are the domoinant organisim in these ecostems. some other animals are:birds, rodents, insects and bugs. our habitats are our homes and buildings as we eat, sleep and generally live in our homes. our "habitats" rely on external power sources (electricity and gas) to help us survive. due to use of these power sources humans are completely dependent on thm and if they crash panic can ensue (blackouts pipe breakages)
sorry to alarm you
Sammy
question 6 is explaining what a human habitat is.
humans live in urban ecosystems (cities, towns and villages). we are the domoinant organisim in these ecostems. some other animals are:birds, rodents, insects and bugs. our habitats are our homes and buildings as we eat, sleep and generally live in our homes. our "habitats" rely on external power sources (electricity and gas) to help us survive. due to use of these power sources humans are completely dependent on thm and if they crash panic can ensue (blackouts pipe breakages)
sorry to alarm you
Sammy
Case Study - The Gippsland Lake ecosystem
Exercises
1.
a) The Lake victoria was opened in the 1890's to the sea which is making the lake increasingly saline because the lake water is mixing with the sea water.
b) The temperature of the water might be increasing because of global warming.
c) The Thompson Dam was built and it reduces the flow of freshwater. The Dam was made mainly to supply more water to Melbourne.
d) The clearing of the vegetation leaves the animals with no food to eat which leaves them to die. This makes a good place for algal blooms to live.
e) The vegetation has been cleared and lots of water has been drained out leaving a lot of salt with only a small amount of water with it. This leaves the lake to silter up.
By David
Gippsland Lakes
1)
a. the possible reason the water is becoming increasingly saline is because in 1890 lake victoria was opened at lakes enteranceand is dredeged to keep it open.
b. global warming is the most likely possibility of the temperature increasing.
c. Drought has caused less rainfall and the lake is drying up.
d. clearing of vegetation has allowed room for algal blooms
e. drought and urban ecosystems have drained the rivers of lots of water and all that rermains is lots of salt in a small amout of water.
2)
a. the changes in the cells have killed theier function and the fish have suffocated
b. i would start finding what changed the cells in the fish gills and then finding the source of this chemical and get rid of it and make sure it never happens again by purging it from the river ecosystem
Thanks for reading!
Sam
a. the possible reason the water is becoming increasingly saline is because in 1890 lake victoria was opened at lakes enteranceand is dredeged to keep it open.
b. global warming is the most likely possibility of the temperature increasing.
c. Drought has caused less rainfall and the lake is drying up.
d. clearing of vegetation has allowed room for algal blooms
e. drought and urban ecosystems have drained the rivers of lots of water and all that rermains is lots of salt in a small amout of water.
2)
a. the changes in the cells have killed theier function and the fish have suffocated
b. i would start finding what changed the cells in the fish gills and then finding the source of this chemical and get rid of it and make sure it never happens again by purging it from the river ecosystem
Thanks for reading!
Sam
Monday, September 24, 2007
The Gippsland Lakes ecosystem
Ex.1
a)Sea water goes into the entrance of the lake
b)That time is summer so the water in the lakes system heat up
c)There is very little water because it is supplying to Melbourne.In dry weather the water evaporated so the amount of water become lesser.
d)Vegetation,soil and died animals in the lake form that.
e)Land clearing and the built of the dam make water silting
ya! i m the 3rd
Daniel
a)Sea water goes into the entrance of the lake
b)That time is summer so the water in the lakes system heat up
c)There is very little water because it is supplying to Melbourne.In dry weather the water evaporated so the amount of water become lesser.
d)Vegetation,soil and died animals in the lake form that.
e)Land clearing and the built of the dam make water silting
ya! i m the 3rd
Daniel
Case Study- The Gippsland lakes Ecosystem
Exercises: Pg. 251
1)
a. The Thompson dam is reducing the flow of fresh water that is used to flush out the lake system. Dredging of the lakes entrance to the sea is making the lake increasingly saline.
b. Soil run- off is silting the water ways, this would make it more of a closed system and the temperature would therefore be increasing. The amount of phosphate that is entering the lake is increasing due to farming and this would be increasing the temperature of the lake.
c. There is very little water entering the lake due to the Thompson dam and during the summer months the more water is needed by Melbourne.
d. The increase in phosphate poured into the lakes mainly from fertilisers from near by farms would be causing algal blooms, also the increase of the temperature of the lake would be facilitating algal blooms.
e. Clearing vegetation from the land had caused increase in run- off and the silting of the water ways.
By Jasmine :)
1)
a. The Thompson dam is reducing the flow of fresh water that is used to flush out the lake system. Dredging of the lakes entrance to the sea is making the lake increasingly saline.
b. Soil run- off is silting the water ways, this would make it more of a closed system and the temperature would therefore be increasing. The amount of phosphate that is entering the lake is increasing due to farming and this would be increasing the temperature of the lake.
c. There is very little water entering the lake due to the Thompson dam and during the summer months the more water is needed by Melbourne.
d. The increase in phosphate poured into the lakes mainly from fertilisers from near by farms would be causing algal blooms, also the increase of the temperature of the lake would be facilitating algal blooms.
e. Clearing vegetation from the land had caused increase in run- off and the silting of the water ways.
By Jasmine :)
Case studdy pg 251 text book
1
a) the sea water is mixing in with the river water making the river salty.
b) the world is having hotter days than ever before, because of global waring the rivers are going up in temperature.
c) it is raining less so there is little water coming down from the hills to fill up the rivers.
d) the river is flowing slower than before so it makes it easier for the algal blooms to grow. and there are more dead animals in the rivers and this makes the rivers an ideal place for the algal to grow.
e) there isnt as many plants around the rivers so the creeks are slowly siltering up.
2) the fish would have struggled to brethe with all the dirty water that they swim in. it would get into their gills and suffercate them.
b) i would cut up the dead fish and find out what is in their gills that is killing them. this will help me to find out what happened to the fish.
By jacob
a) the sea water is mixing in with the river water making the river salty.
b) the world is having hotter days than ever before, because of global waring the rivers are going up in temperature.
c) it is raining less so there is little water coming down from the hills to fill up the rivers.
d) the river is flowing slower than before so it makes it easier for the algal blooms to grow. and there are more dead animals in the rivers and this makes the rivers an ideal place for the algal to grow.
e) there isnt as many plants around the rivers so the creeks are slowly siltering up.
2) the fish would have struggled to brethe with all the dirty water that they swim in. it would get into their gills and suffercate them.
b) i would cut up the dead fish and find out what is in their gills that is killing them. this will help me to find out what happened to the fish.
By jacob
Wednesday, September 19, 2007
Ecosystem Earth
My next question on card #7 is
Why is the sun said to be the source of all life on earth?
The sun is the key source of life on earth. It provides us light/heat which keeps the earth at a temprature that we can survive in and enables us to be able to see. The light from the sun provides energy which plants absorb and go through a reaction called photosynthesis. By going through this reaction plants produce the energy that we need and they purify the air we breathe and provide oxygen. The carbohydrates from plants provide the key source of energy that we need and other living organisms need to stay alive. With out the existance of the sun there would be no life on earth!
Why is the sun said to be the source of all life on earth?
The sun is the key source of life on earth. It provides us light/heat which keeps the earth at a temprature that we can survive in and enables us to be able to see. The light from the sun provides energy which plants absorb and go through a reaction called photosynthesis. By going through this reaction plants produce the energy that we need and they purify the air we breathe and provide oxygen. The carbohydrates from plants provide the key source of energy that we need and other living organisms need to stay alive. With out the existance of the sun there would be no life on earth!
WITHOUT THE SUN OUR EARTH WOULD BE A DEAD, COLD AND DARK PLACE!
By Adam Scholz
Tuesday, September 18, 2007
Native food web
This web shows the order of native birds in australia and what they prey on this helps me to see what native animals eat what and what are the 1st and second consumers. This web also shoes the native producer and the decomposer.
By reading this I hope you get a better Idea of native life in Australia.
Adam and Will
Costal habitats (card 11)
hello again its sam and jack
i had to find several other costal habitats:
Sand Dunes
Shorelands
Off shore islands
Reefs
Barrier islands
Head lands
Wetlands (both fresh and salt water)
From Sam and Jack
Me and sophie are doing task card eight, the topic of this card is trophic levels.
A trophic level is levels are the feeding position in a food chain such as primary producers, herbivore, primary carnivore, etc. Green plants form the first trophic level the producers. Herbivores form the second trophic level while carnivores form the third and even the fourth trophic levels. This is a food chain for a lion.
What is a trophic level?
A 'trophic level' is the name given to the different categorizations that the animals in a certain pyramid are given. Such as producers, first, second and third order consumers. Each thing is one trophic level, ie. 'producers' are the first trophic level in the pyramid.
Ecosystem earth
hey everone, will and i have task card seven which is obviously Ecosystem earth.
We are exploring what biotic and abiotic factors are.
abiotic factors are non living physical and chemical factors in the environment. Some of these factors are water, natural gases, light, wind and minerals cloud cover, rain, snow, hurricanes, etc.
Biotic factors are living organisms. These factors are Plants, animals, fungi, protist and bacteria are all biotic or living factors
Hope you read this deep and meaningful because you will not get a better definition of these words. Chow
Hey everyone!!
Tierney and i have task card five.
This requires us to find a clear definition of a decomposer with an appropriate diagram and an example. Natural ecosystems can be described as self-sustaining. Our card also requires us to research about what this means. Along with this we also have to research about the importance of decomposers in a food web. We also have to find if an ecosystem can be self sustaining without a decompser. To finish off we have to complete a flow of matter diagram for the marine food chain in the placed on our card.
Caragh
Ecosystem(habitat and envirment)
hi everyone here is the Ecosystem(habitat and envirment)
Jack and sam
plants need light, water air and soil
A habitat is more than just a home. It's the environment that supplies everything that living things need to survive.
For animals, their habitat must supply their food, water, air and space.
There are many different habitats on the Earth. These vary in the landforms, sources of water, and climate conditions. Plants and animals are specially adapted to live in their habitats. Animals suited to live in the desert (very dry, either hot or cold) would have a difficult time living in the tropical rain forest (warm and very wet).
koala is my favourite animal. Koalas live in societies, just like humans, so they need to be able to come into contact with other koalas. It is because of this they need to have areas of suitable eucalypt forest which are large enough to support a healthy koala population and to allow for expansion by maturing young koalas.These are very important trees.
Koala populations only occur if suitable habitat is available and because Koala's are very fussy eaters and have strong preferences for different types of gumleaves, then the most important factor which make habitats suitable are the presence of tree species preferred by koalas (usually eucalypts, but also some non-eucalypts) growing in particular associations on suitable soils with adequate rainfall.
Research has shown that socially stable koala populations occur only when there are favourite tree species present. Different species of eucalypts grow in different parts of Australia, so a koala in Victoria would have a very different diet from one in Queensland. Koalas like a change, too, and sometimes they will eat from other trees such as wattle or tea tree.
Each koala eats approximately 200 to 500 grams of leaves per day. The teeth are adapted to deal with for this. The sharp front incisors nip the leaves from the branches and the molars(back teeth) are shaped to allow the koala to cut and shear the leaves rather than just crush them.
plants need light, water air and soil
A habitat is more than just a home. It's the environment that supplies everything that living things need to survive.
For animals, their habitat must supply their food, water, air and space.
There are many different habitats on the Earth. These vary in the landforms, sources of water, and climate conditions. Plants and animals are specially adapted to live in their habitats. Animals suited to live in the desert (very dry, either hot or cold) would have a difficult time living in the tropical rain forest (warm and very wet).
koala is my favourite animal. Koalas live in societies, just like humans, so they need to be able to come into contact with other koalas. It is because of this they need to have areas of suitable eucalypt forest which are large enough to support a healthy koala population and to allow for expansion by maturing young koalas.These are very important trees.
Koala populations only occur if suitable habitat is available and because Koala's are very fussy eaters and have strong preferences for different types of gumleaves, then the most important factor which make habitats suitable are the presence of tree species preferred by koalas (usually eucalypts, but also some non-eucalypts) growing in particular associations on suitable soils with adequate rainfall.
Research has shown that socially stable koala populations occur only when there are favourite tree species present. Different species of eucalypts grow in different parts of Australia, so a koala in Victoria would have a very different diet from one in Queensland. Koalas like a change, too, and sometimes they will eat from other trees such as wattle or tea tree.
Each koala eats approximately 200 to 500 grams of leaves per day. The teeth are adapted to deal with for this. The sharp front incisors nip the leaves from the branches and the molars(back teeth) are shaped to allow the koala to cut and shear the leaves rather than just crush them.
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