BIOL 1106 Lecture Notes - Lecture 23: Transpiration, Primary Production, Herbaceous Plant
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BIOL 1106 Full Course Notes
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Lesson 23 climate and the distribution of communities. This brings cold water that is normally rich in nutrients to the surface. This dry region is the rain shadow: example: sierra nevada mountains in western us. Tropical rain forests: dominates where warm temperature and high precipitation exist year-round. Without the plant communities the soil becomes nutrient-poor: animal diversity is high (particularly insects, birds, and primates) Located along coastlines with temperate climates: common species are spruces, pines, and redwoods (large trees, summer drought favors evergreen tree species, moist fall, winter and spring. Insects are also abundant: similar biome called the alpine tundra is often found on high elevations such as mountains. Freshwater habitats: only cover a small percentage of the earth. Oligotrophic and eutrophic lakes: oligotrophic lakes low in nutrients and algal density and usually have clear water allowing light penetration, can be transformed to eutrophic status through eutrophication (fertilizers, runoff carrying nutrients).
