Aquatic Ecosystems and Their Properties
No description yet. This curated deck is ready for daily study.
Card preview (9)
What are three basic properties of water covered in this class?
Temperature, Salinity, and Vertical Stratification
What is described by trophic status of a body of water?
The amount of standing biomass present in a standing freshwater system
What are the three trophic levels and what do they represent?
-Oligotrophic water has low nutrient concentration -mesotrophic water has middling numbers -eutrophic water has high nutrient concentration
What nutrients are used to determine trophic status?
Phosphorus and Nitrogen
At what temperature does water reach its maximum density?
4 Degrees Celsius
What happens in spring turnover?
All water is around the same temperature and nutrient mobilization from the bottom(substrate) of the water channel occurs
What is summer stratification and how does it differ in eutrophic and oligotrophic lakes?
Summer stratification is characterized by an increase in temperature that warms the surface of the water and thereby creates stratification layers. In oligotrophic lakes, there will be a higher DO level deeper in the lake, and in eutrophic lakes there will be little to no DO in the bottom of the lake.
Why does deeper water in eutrophic lakes have less DO?
Decomposition is an oxygen intensive process