BIO 3117 Lecture Notes - Lecture 14: Macrophyte, Herbivore, Lake Tahoe
20 Mar 2018
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Document Summary
Biological and physical structure and what causes them in lake and marine ecosystems. The blue planet --> water covers like 70% and most of it is salt water. Get nutrients is mixing the water columns (unlike terrestrial plants which is direct) Usually unidirectional movement of sediment and organic material. The other stuff like bacteria can move either way. Filled by precipitation or other systems --> leave to other streams or evaporation. Nutrients (p in freshwater; n, fe in marine systems) Geology of water shed and size and shape or drainage basin. Deep sided lakes are generally oligotrophic (hard to mix) Big watershed generally have more nutrients --> eutrophic. Looking at depth axis, orientation of figures change. Lakes are heated at the top --> downstream processes. To counter balance stratification and have similar conditions not gradient. Large lakes with lots of wind have less stratification. Examples of stratification and mixing in lake depth profile.
