GMU:Life in an aquatic ecosystem/Intro: Difference between revisions

GMU:Life in an aquatic ecosystem/Intro (view source)

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-==Experiments==
+== '''What is an acquatic ecosystem''' ==
-* phosphorus - cyanobacteria and algae (euglena)
+Through the water cycle different types of freshwater bodies are formed, such as glaciers, rivers, lakes, ponds and many more. The different physical-chemical conditions determine which organism can thrive in that acquatic environment, and consequently change it through its biological activity.
+We will concentrate on pond like ecosystems. Thereafeter we understood how these small still water bodies work from an ecological perspective.
+Tihs lead us to reflect on how to evince informations from a system. So we put together a small experiment and check how biotic and abiotic factors interact.
+==Experiment==
+Primary producers are said to be affected by nutrients in form of salts available in their environmnet. Let's test  this.
+We took a Protista, ''Euglena viridis'' and a Cyanobacterium, ''Klebsormidium flaccidum'' and will check how do they react to phospate starvation.
+We set 3 pairs of cultures for each organism. Each pair got either 0,5g/L, 0,1g/l and 0g/L of potassium phosphate.
+We will monitor how the cultures react to the different conditions and speculate how abiotic factors can impact natural ecosystems.
 ===Medium===