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 119
... species ' isocline you are plotting . Any point to the left of the isocline for species 1 generates a horizontal right - pointing arrow . Under these circum- stances , we know that species 1 has a positive growth rate , so its ...
... species ' isocline you are plotting . Any point to the left of the isocline for species 1 generates a horizontal right - pointing arrow . Under these circum- stances , we know that species 1 has a positive growth rate , so its ...
Page 120
... isoclines of both species . Both populations will decrease , and the joint vector points towards the origin of the graph . Things get more interesting in the interior region . Here , we are below the isocline of species 1 , so its ...
... isoclines of both species . Both populations will decrease , and the joint vector points towards the origin of the graph . Things get more interesting in the interior region . Here , we are below the isocline of species 1 , so its ...
Page 131
... isoclines for both species are plotted in Figure 5.11 . Superimposed on this state space is one of the trajectories for the 55 - day experiment . Because the isocline for the oligochaetes lies slightly above the isocline for Hobsonia ...
... isoclines for both species are plotted in Figure 5.11 . Superimposed on this state space is one of the trajectories for the 55 - day experiment . Because the isocline for the oligochaetes lies slightly above the isocline for Hobsonia ...
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