## Ecology: Concepts and ApplicationsThis introductory ecology text places strong emphasis upon helping students grasp the main concepts of the topic without becoming inundated with detail. It features a number of examples of actual research projects conducted in the field of ecology. |

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Page 211

Clearly, natural populations have a tremendous capacity for

geometric population growth cannot be maintained in any ... Therefore, as

population size, N,

and larger.

Clearly, natural populations have a tremendous capacity for

**increase**, andgeometric population growth cannot be maintained in any ... Therefore, as

population size, N,

**increases**the**rate**of population**increase**, dN/dt, gets largerand larger.

Page 214

The logistic equation gives the rate of population change as a function of r„, N.

and K. As the ratio N increases, population growth slows. K Change in numbers.

Population size dt rr " K ' Change in time Intrinsic

The logistic equation gives the rate of population change as a function of r„, N.

and K. As the ratio N increases, population growth slows. K Change in numbers.

Population size dt rr " K ' Change in time Intrinsic

**rate of increase**v Carrying ...Page 215

In the logistic model r decreases as N increases. FIGURE 9.13 The relationship

between population size. N. and per capita

model of population growth. should remember that r is the difference between

birth ...

In the logistic model r decreases as N increases. FIGURE 9.13 The relationship

between population size. N. and per capita

**rate of increase**, r, in the logisticmodel of population growth. should remember that r is the difference between

birth ...

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abundance age distribution algae animals bacteria beetles biological biomass biomes birds body temperature boreal forest capita rate changes chapter climate diagrams competition concentration creosote bushes cycle desert dispersal diversity dynamics ecologists ecology ecosystems energy environmental estimate evaporation extinction feeding FIGURE finches fish freshwater gradient grassland gray whale grow habitat heat herbivores higher human individuals influence insects interactions intertidal zone invertebrates islands keystone species lakes landscape latitudes live lower mammals marine mountains mutualistic nitrogen North America number of species nutrients ocean optimal foraging theory organisms photosynthetic plants population density population growth precipitation predators predict prey primary production produce rain forest range rate of increase reduced reproductive researchers response rivers roots seeds shows shrublands shrubs snails soil species richness stream structure surface survivorship survivorship curve temperate forests terrestrial tion trees tropical dry forest variation vegetation water loss water potential whales