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Unformatted text preview: Learning objectives, Intro Biology 152, Ecology section (Turner, Fall 2011, Campbell 8 th edition) Lecture 5 – Logistic growth; Population regulation; Metapopulations (Pp. 1186-1195) How do populations change through time when resources are limited? Key concepts • Logistic growth occurs when r slows down as the population size approaches the carrying capacity, K . • Carrying capacity is a property of the environment, and for a given species, it can vary through time and from place to place. • With density-dependent regulation of population growth, per capita birth rates or death rates vary with population size; with density-independent regulation, they do not. • Species exhibit a wide array of life-history strategies, which reflect tradeoffs between growth, survivorship, reproduction and competitive abilities. • Populations may be linked spatially by immigration and emigration, such that populations in different habitat patches function together as a metapopulation....
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This note was uploaded on 02/11/2012 for the course ZOOLOGY 152 taught by Professor Stephengammie during the Fall '11 term at University of Wisconsin.
- Fall '11