BIOB50H3 Lecture Notes - River Ecosystem, Photosynthesis, Lake Ecosystem
22 Sep 2013
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Physical environment decides where organisms can live and what resources are available to them e. g. won"t find nemo in desert wrong environment. Some places have more amphibians than others, same as plants climate- long-term description of weather, based on averages. Determines the geographic distribution of organisms e. g. blue jays, climate controlling their numbers widespread mortality. Drought species dies, large scale mortality latitudinal differences in solar radiation. Sun hitting poles energy disperse over larger area (same amount of energy) as hitting equator so less energy, not as hot. Air that"s heated rises, cools and produces lots of rainfall. One side green and wet, other side is dry. Evapotranspiration- sum of water loss through transpiration by plants and evaporation of soil. System loses heat in albedo reflected radiation from surface e. g. snow reflecting solar radiation. Sensible heat loss= direct heat loss e. g. heating plants, heat transfers back into air. High temperature, sparse vegetation and animal population high diversity.
