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C. Ecology I. Ecosystems and Communities
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Biodiversity
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Zebra Mussels
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Predator Removal
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ClimographClimograph
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Community Ecology Interspecific Interactions and Community Structure Disturbance and Community Structure Biogeographic Factors
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Competitive Exclusion Hypothesis
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Microhabitats of Lizard Species
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Anolis distichus – sunny leaf surface Anolis insolitus – shady branch
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Deceptive coloration
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Camouflage – chick (poorwill); lizard
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Aposematic (warning) coloration
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Batesian mimicry – the hawkmoth larva (left) resembles a snake when disturbed {harmless resembles harmful}
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Mullerian mimicry – the cuckoo bee (left) and the yellow jacket both have stingers that release toxins {both harmful but more exposure to potential predators of linking markings with harm}
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Mutualism – between acacia trees and ants
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Parasitic Nasonia (wasps)
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Commensalism – one species benefits, the other is neither harmed nor helped (usually)
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Trophic levels – terrestrial and marine food chains {make sure your assignment doesn’t resemble this one! ; ) }
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Antarctic marine food web
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Partial food web
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Without Pisaster ochraceous (sea stars) as keystone predators…, …the Mytilus californianus monopolized the space
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Sea Otters are keystone predators in the North Pacific
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A fire on a grassland burns the detritus and rejuvenates the prairie so that virtually all the biomass is living a month after a burn (right)
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Large disturbances occur more often when small disturbances are prevented. Lodgepole pine cones require intense heat to open and germinate.
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Soil nitrogen concentration during succession after a glacial retreat
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Forest community 1 is more diverse b/c it has greater heterogeneity – both in species richness (number) and relative abundance
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Species richness generally decreases towards the poles
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Energy and Species Richness - annual available energy is measured by evapotranspiration (combining solar radiation and temperature) and expressed as rainfall equivalents in mm/yr.
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The number of plant species on the Galapagos Islands in relation to the area of the island.
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Ecosystems Primary Production Secondary Production Cycling of Chemical Elements Human Impact
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Energy flow = broken red lines; Material cycling = solid blue lines Energy = solar radiation chemical transfers in food web heat radiated to space Materials = pass through trophic levels detritus back to primary producers
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Fungi decomposing a log
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Primary Production
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Net Primary Production
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II. Biomes
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Lake Zonation
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Oligotrophic Lake
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Eutrophic Lake
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Wetlands Estuaries
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Marine: 1. Tide Zone 2. Coral Reef 3. Benthos
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Terrestrial Biomes
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Tropical Forests: 1. Highland 2. Lowland 3. Seasonal
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Deserts
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Tundra
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the Biosphere
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Behavioral Ecology Learning Animal Cognition Sociobiology
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Behavior Components
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Digger Wasp Behavior
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Female Songbird Preferences
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Geese Imprinting
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Two types of bird-song development
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Electronic Surveillance of honeybees
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Cooperative Prey Capture
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Territories (small!)
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Staking Territories with Chemical Markers
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Three-spined stickleback courtship behavior
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Bee Communication
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Colonial Mammals Naked Mole Ratsthe Common Mole Rat
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Kin Selection and Altruism in the Belding Ground Squirrel
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Ecology the biosphere behavioral biology population biology community ecology ecosystems
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Population Ecology Populations Life Histories Population Growth Population Limiting Factors Human Population /Growth
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Conservation Ecology Biodiversity Crisis Conservation at the Population and Species Level Conservation at the Community, Ecosystem, and Landscape Levels
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