## 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 61

SURVIVORSHIPSCHEDULES IN NATURE What are the different types of

can be seen by plotting the logarithm of 13) on the y axis and age (x) on the x

axis.

SURVIVORSHIPSCHEDULES IN NATURE What are the different types of

**survivorship curves**observed in nature? There are three basic patterns. Thesecan be seen by plotting the logarithm of 13) on the y axis and age (x) on the x

axis.

Page 62

of parental care in their offspring, ensuring high survivorship of young age

classes. The opposite, and more common, pattern is a “Type III"

higher for ...

of parental care in their offspring, ensuring high survivorship of young age

classes. The opposite, and more common, pattern is a “Type III"

**survivorship****curve**. In this case, survivorship is very poor for the young age classes, but muchhigher for ...

Page 76

So, the traits expected under r-selection are early, semelparous reproduction,

large r, many offspring with poor survivorship, a Type III

small adult body size. By contrast, in K-selection, an organism is growing in an ...

So, the traits expected under r-selection are early, semelparous reproduction,

large r, many offspring with poor survivorship, a Type III

**survivorship curve**, andsmall adult body size. By contrast, in K-selection, an organism is growing in an ...

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#### LibraryThing Review

User Review - dougb56586 - LibraryThingThis is a very good introduction to the mathematical models used in population dynamics. The author begins with a simple exponential model of population growth, gradually extends the model to account ... Read full review

### Contents

Logistic Population Growth | 27 |

AgeStructured Population Growth | 56 |

Metapopulation Dynamics | 91 |

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### Common terms and phrases

abundance age class age structure Allee effect allenbyi ascidian assumptions axis birth and death birth rate calculate carrying capacity Chapter coexistence colonization competition competitors constant death rate decrease density-dependent depends ecology environmental stochasticity Euler equation example exponential growth Expression extinction rate Figure fluctuations functional response go extinct habitat immigration rate interspecific competition isocline of species iteroparous K-selection large islands Leslie matrix life-table logistic growth logistic model Lotka–Volterra model MacArthur—Wilson model mathematical maximum metapopulation metapopulation models number of individuals number of species Number of victims offspring oligochaetes parasite passive sampling model patches persist population cycles population density population growth rate population sizes predator and victim predator isocline predator population primer propagule pyramidum rate of increase red grouse represents reproductive value rescue effect schedule simple source pool species richness species—area relationship state-space graph survivorship survivorship curve tion turnover ulation victim density victim isocline victim population zero