A Primer of EcologyWith the aim of teaching students the essential models in population and community ecology, this book explains in detail the basic concepts of exponential and logistic population growth, age-structured demography, metapopulation dynamics, competition, predation and island biogeography. |
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Page 94
... rate precisely equals the extinction rate . We will see this same derivation once more in Chapter 7 , when we model the number of species in a community . We now wish to describe the immigration and extinction functions in more detail ...
... rate precisely equals the extinction rate . We will see this same derivation once more in Chapter 7 , when we model the number of species in a community . We now wish to describe the immigration and extinction functions in more detail ...
Page 177
Nicholas J. Gotelli. Now we turn to the extinction rate , μs . We expect us to increase with increasing S : the more species present on the island , the greater the rate at which species disappear . This relationship occurs because each ...
Nicholas J. Gotelli. Now we turn to the extinction rate , μs . We expect us to increase with increasing S : the more species present on the island , the greater the rate at which species disappear . This relationship occurs because each ...
Page 178
... rate at which species present on the island go extinct . This equilibrium point is stable . If we are below Ŝ , we are to the left of the intersection point . In this region of the graph , the immigration rate exceeds the extinction rate ...
... rate at which species present on the island go extinct . This equilibrium point is stable . If we are below Ŝ , we are to the left of the intersection point . In this region of the graph , the immigration rate exceeds the extinction rate ...
Contents
Logistic Population Growth Expens | 27 |
AgeStructured Population Growth | 55 |
MODEL PRESENTATION AND PREDICTIONS | 90 |
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abundance age class age structure Allee effect allenbyi assumptions axis birth and death birth rate calculate carrying capacity Chapter coexistence colonization competition competitors constant death rate decrease density-dependent depends E. O. Wilson ecology Euler equation example exponential growth Expression extinction rate Figure fluctuations functional response habitat immigration rate interspecific competition isocline of species iteroparous K-selection K₁ K₂ large islands Leslie matrix logarithmic logistic growth logistic model Lotka-Volterra equations Lotka-Volterra model MacArthur-Wilson model mathematical maximum metapopulation metapopulation models N₁ N₂ number of individuals Number of predators number of species Number of victims offspring parasite passive sampling model patches persist population cycles population growth rate population sizes predator and victim predator isocline predator population primer rate of increase red grouse represents reproductive value rescue effect schedule source pool species richness species-area relationship survivorship survivorship curve tion turnover ulation victim density victim isocline victim population zero