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1A3_2013 Group 6 - Freshwater Lake

Page history last edited by 2013class1a3group6 10 years, 12 months ago

Team members

 

Names / Roles:

  • Joni~                  (Leader)
  • Mok Jun Hao~ (Wiki Writer)
  • Syafinaz~         (Researcher)       
  • Terence~          (Researcher) 
  • Andy~                 (Researcher) 

 

Overview

In this section, include a brief description of the allocated ecosystem. You should include the following information:

  • Location of the ecosystem -

          Freshwater Lakes are usually found in low lying areas. 

 

  • Description of ecosystem- 

          Freshwater lakes are bodies of still , unsalted water surrounded by land. 

 

 

  • Biodiversity of ecosystem (richness of life in ecosystem)-

          This habitat is home to a plethora of microbes such as Proteobacteria, Actinobacteria,

          Cyanobacteria and Bacteroidetes.   

 

          

 

 

                                    

 


Physical Factors

Search the Internet for information on the following physical factors in the allocated ecosystem. 

  • Light (availability of sunlight in the ecosystem), 

         - The light that reaches the surface of a lake or stream is controlled by latitude, season,

           time of day,weather, and the conditions that surround a water body. 

 

  • Temperature (temperature of the ecosystem),

         - During the summer, the temperature can range from 4° C

            near the bottom to 22° C at the top. During the winter, the

            temperature at the bottom can be 4° C while the top is 0° C (ice).

 

 

 

  • Water (water quality in the ecosystem),

         - The water is drinkable .

 

  

  • Air (quality of air in the ecosystem), 

         - The air is not polluted in the ecosystem. 

 

 

 

 


Classification of Living Organisms

Classify at least eight of the living organisms found in the allocated ecosystem into the categories below:

1.Producers - Phytoplankton ~ 

-Phytoplankton is a plant , it does not feed on

other organisms. They depend on sunlight for

photosynthesis to make food. It is usually

found nearer on the surface of the lake for  

sunlight.  

 

  2. Primary Consumers - Zooplankton ~

- The Zooplankton feeds on the Phytoplankton. They are

found nearer to the surface of the lake as they feed on

Phytoplanktons which are nearer to the surface.

 

3.Secondary Consumers - Smaller Fish and Turtles ~

-Smaller fishes feed on the Zooplankton and is found in the

lake. 

 

 

-The turtles feed on smaller fishes/ Phytoplanktons. It lives in

 the lake and often coming ashore to bask (Exposed in warmth)

 in the sun and lay eggs.

 

4.Tertiary Consumers - Larger Fishes (Pike...) ,Seagull ~

 -The seagull feeds on prey, particular fish

that swims near the surface of the water.

Seagulls live by the side of the lake.

 

 

-Larger fishes , like the Pike feed on smaller fishes and it

lives in the lake. 

 

5.Decomposers - Bacteria and Fungi ~ 

-Bacteria and Fungi are decomposers and they eat things like

Plants / Animals which are dead.

 

For each of the living organism, find a picture and write a short description on the organism. You may wish to include feeding habits, region in the ecosystem where it is normally found etc. 

 

 

 


Food Web 

Create a food web using at least eight of the living organisms listed above. You may wish to use Microsoft PowerPoint to create your food web. Save your food web as a picture. Finally copy and paste your picture in this section of your wiki. 

 

 


Inter-relationship in Ecosystem

Give at least one example for each of the following relationships in the ecosystem:

 

  1. Predator-prey
    • An organism that kills and consumes the another organism is called predator.
    • An example of a predator-prey relationship in a Freshwater Lake is : Small Fish --> Seagull
    • The Seagull is the predator while the small fish is the prey. The Seagull kills and then consumes the fish for energy. 

 

 

 

     2.     PARASITISM

    • An organism(parasite) gains benefits from another organism(host) and causes harm to the host at the same time.
    • An example of parasitism in a Freshwater Lake is : Animal --> Leech  
    • The leech is the parasite while the other animal is it's host. The leech attaches itself to another animal and sucks blood from it. The leech thrives and the animal loses blood, making it weaker.  

 

 

 

 

     3.     MUTUALISM

    • Mutualism is a relationship between two organisms in which both benefits from it.   
    • Algae and freshwater hydroids that find substrates on the shells or carapaces of organisms that benefit from the camouflage like freshwater snails, some crustaceans, and turtles. 

 

 

 

Useful Links

Plagarism is a strongly discouraged.

 

Include the links of all websites you obtained information from to complete your ecology wiki. 

For example:

Wild World @ nationalgeographic.com ( http://www.nationalgeographic.com/wildworld/terrestrial.html ) 

Comments (3)

2013class1a3group6 said

at 3:30 pm on Mar 17, 2013

1.producer
2.primary consumer
2.secondary consumer
3.tertiary consumer

Mr Sean Low said

at 3:19 pm on Mar 19, 2013

good to see that your group is working on this webpage. nice pictures too.

However, it will be good that your presentation for the Overview section to incldue more information, picture and the presentation be in a smooth reading flow than the current question-answer form.

you may also manupulate the different font size, font and colours for your presentation of the information.

2013class1a3group6 said

at 3:29 pm on Mar 19, 2013

Yes! Will do :D

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