Population Ecology Flashcard

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What is a climax community?

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A climax community is a stable and mature ecological community that has reached a steady state of development, characterized by a complex structure and a diverse array of species.

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Define carrying capacity in the context of population ecology.

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Carrying capacity is the maximum number of individuals of a particular species that an environment can sustainably support without degrading the habitat.

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What occurs when a population exceeds its carrying capacity?

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When a population exceeds its carrying capacity, the environment becomes overburdened, leading to resource depletion, increased competition, and ultimately a decline in the population size.

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What is secondary succession?

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Secondary succession is the process of ecological recovery that occurs in an area where a disturbance has destroyed an existing community but left the soil intact, allowing for the re-establishment of species.

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Differentiate between exponential growth and logistic growth in populations.

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Exponential growth occurs when a population increases rapidly in an ideal environment with unlimited resources, while logistic growth occurs when the growth rate decreases as the population approaches the carrying capacity of the environment.

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What factors can limit population growth?

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Factors that can limit population growth include resource availability, predation, disease, competition, and environmental conditions.

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Explain the concept of ecological succession.

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Ecological succession is the process by which ecosystems change and develop over time, involving a series of stages that lead to a stable community.

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What role do pioneer species play in ecological succession?

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Pioneer species are the first organisms to colonize a disturbed area, initiating the process of succession by creating conditions that allow other species to establish.

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What is the difference between primary and secondary succession?

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Primary succession occurs in lifeless areas where soil has not yet formed, while secondary succession occurs in areas where a disturbance has destroyed an existing community but left the soil intact.

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How does carrying capacity affect population dynamics?

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Carrying capacity influences population dynamics by determining the maximum population size that an environment can sustain, affecting birth rates, death rates, and overall population stability.