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AP Biology Ch 52: Population Ecology Vocabulary Flashcards

AP Biology Chapter 52: Population Ecology Vocabulary

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94462412Population EcologyThe study of how members of a population interact with their environment, focusing on factors that influence population density and growth. P115194462412
94462413Populationa group of individuals of one species that live in a particular geographical area. p115194462413
94462414Densitynumber of individuals per unit area or volume. p115294462414
94462415Dispersionthe pattern of spacing among individuals within geographic population boundaries. p115294462415
94462416Mark-recapture methoda sampling technique used to estimate wildlife populations. p 115294462416
94462417Clumpeddescribing a dispersion pattern in which individuals are aggregate to patches. p115394462417
94462418Uniformdescribing a dispersion pattern in which individuals are evenly dispersed. p115394462418
94462419Randomdescribing a dispersion pattern in which individuals are spaced in a pattern less, unpredictable way. p115394462419
94462420Demographythe study of statistics relating to deaths and births in populations. p115494462420
94462421Life Tablea table of data summarizing mortality in a population. p115494462421
94462422Cohorta group of individuals of the same age, from birth until all are dead. p115494462422
94462423Survivorship curvea plot of the number of members of a cohort that are still alive at each age; one way to express age specific mortality. p115494462423
94462424Reproductive tablean age specific summary of the reproductive rates in a population. p115594462424
94462425Life historya series of events from birth through reproduction and death. p115694462425
94462426Big-bang reproductiona life history in which adults have but a single reproductive opportunity to produce large numbers of offspring, such as the life history of the Pacific Salmon. Also known as semelparity. p115694462426
94462427Semelparitya life history in which adults have but a single reproductive opportunity to produce large numbers of offspring, such as the life history of the Pacific salmon. Also known as "big-bang production." p115694462427
94462428Repeated reproductiona life history in which adults produce large numbers of offspring over many years. Also known as Interoparity. p115694462428
94462429Interoparitya life history in which adults produce large numbers of offspring over many years. Repeated reproduction. p115694462429
94462430Zero population growtha period of stability in population size when the per capita birth rates and death rates are equal. p115994462430
94462431Exponential population growththe geometric increase of a population as it grows in an ideal, unlimited environment. p116094462431
94462432Intrinsic rate increasethe difference between the number of births and the number of deaths, symbolized as r max; the maximum population growth rate. p116094462432
94462433Carrying capacitythe maximum population size that can be supported by the available resources, symbolized by K. p116094462433
94462434Logistic population growtha model describing population growth that levels off as population size approaches carrying capacity. p116194462434
94462435 k-selectionthe concept that in certain (k-selected) populations, life history is centered around producing relatively few offspring that have a good chance of survival. p116394462435
94462436r-selectionthe concept that in certain (r-selected) populations, a high reproductive rate is the chief determinant of life history. p116394462436
94462437Density dependantany characteristic that varies according to an increase in population density. p116494462437
94462438Negative feedbacka primary mechanism of homeostasis, whereby a change in a physiological variable that is being monitored triggers a response that counteracts the initial fluctuation. p116494462438
94462439Density independenta characteristic that does not vary in response to population density. p116494462439
94462440Demographic transitiona shift from zero population growth in which birth rates and death rates are high to zero population growth characterized instead by low birth and death rates. p116994462440
94462441Age structurethe relative age of individuals of each age in a population. p116994462441
94462442Ecological footprinta method to use multiple constraints to estimate the human carrying capacity of Earth by calculating the aggregate land and water area in various ecosystem categories that is appropriated by a nation to produce all the resources it consumes and to absorb all the waste it generates. p117094462442

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