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13 Cards in this Set
- Front
- Back
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Categories of animal prey defense?
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Physical Defenses
Defense in numbers Warning coloration Mimicry Behavioral |
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Plant Defenses against predation?
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Structural
Chemical Induced |
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So how come predators don’t drive prey extinct?
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Habitat complexity
Limited predator dispersal Switching prey Spatial refuges (areas where predators cannot hunt effectively) |
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is this predator or prey?
Define variables in this equation dV/dt = rV - cVP |
Prey
V = Number of prey (victims) P = Number of predators c = Capture efficiency (or attack rate) |
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Predator or prey
Define variables dP/dt = acVP - dP |
Predator
V = Number of prey (victims) P = Number of predators d = Death rate c = Capture efficiency (or attack rate) a = Feeding efficiency (or conversion efficiency): factor by which consumed food goes to growth/reproduction |
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Three predator-prey dynamic patterns, effect of each, stable/unstable equilibrium
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limit --> consistant cycles --> stable equilibrium
damped --> constant populations --> stable equilibrium exploding --> extinction --> unstable equalibrium |
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3 types mutualism?
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trophic
habitat service |
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Define trophic mutualism
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a mutualist receives energy or nutrients from its partner
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Def habitat mutualism
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one partner provides the other with shelter, a place to live, or favorable habitat
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def service mutualism
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interactions in which one partner performs an ecological service for the other
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Def symbiosis
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A relationship in which the two species live in close physiological contact with each other
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What are Mycorrhizae?
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Symbiosis = plant roots + fungi
Fungi increase the surface area over which the plants can extract soil nutrients and water Plants supply the fungi with carbohydrates |
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Why are detritivores important
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nutrient cycling
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