Ecosystem

Sampling Ecosystems

Laboratory 34

1.    What is an ecosystem?

 

2.    What is ecology?

 

3.    What are abiotic factors in the ecosystem?

 

4.    What are biotic factors in the ecosystem?

 

 

5.    Describe these types of organisms found in the ecosystem. 
Give an example of each

       a.    producers

herbivores

carnivores

omnivores

detritivores

        f.    decomposers

REMEMBER:  You are to compare two ecosystems.  You are not expected to
complete all the charts below.  Choose the two that you studied, and
leave the others blank.

 

6.    Give the following information for the terrestrial ecosystem.
(If you chose this one to study.)  Supply as much information on the

    abiotic factors as possible.

Terrestrial Ecosystems

 

A.    Abiotic Factors - You may add other factors, if needed.

 

 

 

Abiotic Terrestrial Site 

General Description  

Temperature  

Humidity  

Wind velocity  

Wind direction  

   

   

   

   



B.      Biotic Factors

Terrestrial Site (Do at least ten organisms)

 

Organism Found Role in ecosystem (producers, consumers, detritivores)
Abundance Identifying Feature Classification (Kingdom, Phylum) Animals
– class also

         

         

         

         

         

         

         





































         





































         

7.    Select any three producers and any three consumers from the
organisms collected or mentioned, and explain how each has adapted to
its terrestrial environment.

 

 

8.    Give the following information for the aquatic ecosystem. 
Information found in homework section

AQUATIC ECOSYSTEMS

 

 

 

Abiotic Factors Aquatic Site 

pH  

Dissolved oxygen  

nitrate  

ammonia  

chlorine  

Temperature

depth





Aquatic Site  (Do at least ten organisms)

Name of Organism Role in the Ecosystem Classification (Kingdom, Phylum)
Animals – Class Also Identifying Features

       

       

       











       

       

       

       

























       





















       

 

 9. Select any three producers and any three consumers from the aquatic
environment and explain how each has adapted to its aquatic environment.


 

Do Review Questions, page 488.

 

 

Abiotic Factors

Pond Stream

Dissolved oxygen 13.2 mg/l 13.2 mg/l

pH 8.0 8.88

Depth ~ 4� deep ~5� deep

Temperature 16 C 10 C

Nitrate 1.0 mg/l 1.0 mg/l

Chlorine 1.0 mg/l 1.0 mg/l

Ammonium 1.0 mg/l 1.0 mg/l

Calcium 1.0 mg/l 1.0 mg/l

Biotic Factors for the Stream Ecology Lab:

POND

Green Algae - Mougeotia scalaris

Green Algae - spirogyra

Algae - Navicula

Hornwort - Plantae: Ceratophyllum demersum

Segmented Worm - Oligochaeta: Macrobdella

Insecta Strider

Grasshopper - Insecta

STREAM

Green Algae - oscillator

Thread worm - Nematoda

Insecta strider

Crustacea: dapnia logirems

Rotifer

Harvestmen - Arachnida

Dragonfly larva - Insecta: Order, Odonata

Damselfly larva - Insecta: Order, Odonata

Caddis fly larva - Insecta

Midge fly - Insecta

Aquatic snail - Gastropoda

Amphibious Smartweed - Plantae

Water Willow - Plantae

Euglena - Protozoa