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 2
... decrease from 10 to 8 birds . Fortunately , all changes in population size can be classified into just four categories . Populations in- crease because of births and decrease because of deaths . Population size also changes if ...
... decrease from 10 to 8 birds . Fortunately , all changes in population size can be classified into just four categories . Populations in- crease because of births and decrease because of deaths . Population size also changes if ...
Page 119
... decreases . The decrease is represented as a left - pointing horizontal arrow in the state space . Finally , if we are at a point precisely on the isocline , N1 neither increases nor decreases , and there is no movement in the ...
... decreases . The decrease is represented as a left - pointing horizontal arrow in the state space . Finally , if we are at a point precisely on the isocline , N1 neither increases nor decreases , and there is no movement in the ...
Page 134
... decrease in the activity density of G. allenbyi . As the density of G. pyramidum increased , G. allenbyi did not decrease its activity , but instead shifted into the less preferred stabi- lized sand habitat . Consequently , the isocline ...
... decrease in the activity density of G. allenbyi . As the density of G. pyramidum increased , G. allenbyi did not decrease its activity , but instead shifted into the less preferred stabi- lized sand habitat . Consequently , the isocline ...
Contents
Logistic Population Growth Expens | 27 |
AgeStructured Population Growth | 55 |
MODEL PRESENTATION AND PREDICTIONS | 90 |
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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