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GMU:Life in an aquatic ecosystem/Intro (view source)
Revision as of 13:45, 25 November 2024
, 25 November 2024→a journey in a mm of water by Eirini Kokkinidou
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Tag: 2017 source edit |
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== | == '''What is an acquatic ecosystem''' == | ||
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== | |||
[[File:Phosphate experiment setup.jpg|thumb|232x232px]] | |||
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. | |||
The rest of the solution was kept standard | |||
We will monitor how the cultures react to the different conditions and speculate how abiotic factors can impact natural ecosystems. | |||
===Medium=== | ===Medium=== | ||
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One of the outcomes, a video piece, features an aquatic ecosystem in contact with human-built objects. As some objects are ignored by fish communities, this work suggests that different species have special needs and preferences that are not necessarily easily foreseen by humans. The researcher explores the optimized environments for the aquatic communities but does it with a limited technical tool, a video camera. | One of the outcomes, a video piece, features an aquatic ecosystem in contact with human-built objects. As some objects are ignored by fish communities, this work suggests that different species have special needs and preferences that are not necessarily easily foreseen by humans. The researcher explores the optimized environments for the aquatic communities but does it with a limited technical tool, a video camera. | ||