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. |
From inside the book
Results 1-3 of 29
Page 5
... zero . But in our simple model immigration is not allowed , so the population will stop growing if it ever hits the " floor " of zero individuals . The population will also stop growing if r should equal zero . In other words , if the ...
... zero . But in our simple model immigration is not allowed , so the population will stop growing if it ever hits the " floor " of zero individuals . The population will also stop growing if r should equal zero . In other words , if the ...
Page 94
... zero if the probability of extinction is zero ( p , = 0 ) , or if none of the sites in the metapopulation is occupied ( ƒ = 0 ) . Substituting Expressions 4.4 and 4.5 back into 4.3 gives us a general metapopulation model : df dt = P ( 1 ...
... zero if the probability of extinction is zero ( p , = 0 ) , or if none of the sites in the metapopulation is occupied ( ƒ = 0 ) . Substituting Expressions 4.4 and 4.5 back into 4.3 gives us a general metapopulation model : df dt = P ( 1 ...
Page 177
... zero . Setting Expression 7.3 equal to zero and solving for S yields : Extinction rate ( μ ) I + E S P = I μs = ( E / P ) S P E Expression 7.4 Number of species on island ( S ) Figure 7.4 The extinction rate in the MacArthur - Wilson ...
... zero . Setting Expression 7.3 equal to zero and solving for S yields : Extinction rate ( μ ) I + E S P = I μs = ( E / P ) S P E Expression 7.4 Number of species on island ( S ) Figure 7.4 The extinction rate in the MacArthur - Wilson ...
Contents
Logistic Population Growth Expens | 27 |
AgeStructured Population Growth | 55 |
MODEL PRESENTATION AND PREDICTIONS | 90 |
Copyright | |
5 other sections not shown
Other editions - View all
Common terms and phrases
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