CC BIO 44 - The Physical Environment of Earth Lecture Notes (6 pages)

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The Physical Environment of Earth Lecture Notes



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The Physical Environment of Earth Lecture Notes

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Pages:
6
School:
Claremont College
Course:
Bio 44 - Introductory Biology

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The Physical Environment of Earth 1 Adaptation to the environment evolution so what is the environmental variation Terrestrial 1 Sunlight wind patterns global rainfall patterns rain shadows climate profiles 2 Plant Communities basis of ecosystems Merriam Mt Lemon basis water temperature naming most obvious plants definition of a community organisms living together organisms interacting ranges of individual species Note actual vs potential niches range limits Uniqueness of each spot effect on predictability basic concept communities are human constructs designed to organize information As such they can change How many plant communities in California 3 Plant Succession description chaparral ponderosa primary pioneer climax communities dominance climax community who wins fire and flood as natural events when is a fire bad not regular inc frequency dec freq flood prevention nile river local rivers jungle succession one tree at a time World Biomes 1 World biomes Holdrige classification 2 Invasions similar conditions possibility of survival survival depends on physical conditions biotic predators fitting in 3 Species Ranges tropics vs temperate effects of vegetational destruction 4 What determines Numbers of species isolating mechanisms differences between temperate vs tropics ecosystem structure stability complexity effects of habitat destruction and extinction tropics vs temperate 5 World organismal changes effects of human activities Atmospheric effects ozone hole CO2 levels Low level pollution Temperature effects The physical environment aquatic systems 1 water dissolved oxygen light nutrients substrate wave action 2 division into regions of life Fresh water lakes eutrophic oligotrophic streams swamps 3 Human effects pollution BOD water flow acid rain 4 water supply How we deal with it The oceans 1 Oceans habitats depth substrate distribution of nutrients deep hot areas etc 2 Ocean current patterns 3 C02 and sea level changes Ozone hole effects 4 Pollution



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