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Biology of how different species relate to each other (persistence, resilience, structure and dynamic) |
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Two species exist with common food, food must be in short supply and one species will be reduced |
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One species wins the competition, the inferior species has to die or change |
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Two competing species somehow divide the resource |
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One species using another species for food |
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When an animal species grazes on shrubs, shrubs do not usually die |
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The most common interaction between species, interaction between host and parasite
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Populations of both predator and prey increase and decrease |
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Single celled microorganisms that give us diseases, also a parasite, most commonly studied |
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A community change that is more or less predictable, predictable meaning the growth pattern of which species come first and those that follow |
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The process starts from a blank slate, where there is no life at all (lava or glacial break down) |
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The process starts after some type of disturbance (wild fire, bulldozers, clear cutting) |
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r selection is fast reproducing, but has a high mortality rate and is usually the first to grow in an environment; K selection is slow at reproducing, but majority survive and joins an environment after it has evolved a bit |
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All living organisms that interact together in a place, combined with all the nonliving characteristics of that place |
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How organisms interact with each other and their environment |
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Trophic (feeding) Ecology (3) |
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Autotrophic: species that feed themselves (plants) Heterotrophic: species that feed on other species (people) Detritrivores: those that feed off of dead things
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A linear composition of who eats whom:
grass à grasshopper à meadow lark à hawk |
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The change in a food web by either gaining or losing an animal |
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A visual display of the energy lost between different trophic levels |
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Nutrient or chemical cycling |
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The water cycle: rain, precipitation, runoff and how this affects groundwater aquifers that supply most of the human population with water |
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Shows major carbon reservoirs and pathways of carbon movement on the planet |
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Shows major pathways and forms of nitrogen (we generate lots of poop) |
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