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AP Biology Chapter 53 Flashcards

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7414753219Densitythe number of individuals per unit area or volume0
7414753220Dispersionthe pattern of spacing of those individuals1
7414753221Mark-Recapture MethodA sampling technique used to estimate wildlife populations.2
7414753222ImmigrationMigration to a new location3
7414753223EmigrationMigration from a location4
7414753224Clumping Distributionaggregrate in noticeable but irregular groups (schools of fish, flocks of birds, fungi)5
7414753225Uniform DistributionDistribution where populations are spaced evenly (plant/animals)6
7414753226Random Distributionspacing between individuals is irregular (dandelions)- not common in nature7
7414753227Demographythe scientific study of population characteristics (what affect population size over time)8
7414753228Life TableAn age-specific summary of the survival pattern of a population.9
7414753229CohortA group of individuals of the same age of the same population10
7414753230Survivorship Curveshows the number of proportion of members of a cohort still alive at each age11
7414753231Survivorship Curve Type ILow mortality during early age and middle age and a rapid increase with old age (humans)12
7414753232Survivorship Curve Type IIDeath is relatively constant throughout the life span (squirrels)13
7414753233Survivorship Curve Type IIIhas high initial mortality with the few offspring that survive likely to reach adulthood (oysters)14
7414753234Reproductive Tablean age-specific summary of the reproductive rates in a population15
7414753235Zero Population Growthoccurs when the birth rate equals the death rate16
7414753236Exponential Population GrowthThe geometric increase of a population as it grows in an ideal, unlimited environment. (unlimited food, no competition or predators, can reproduce as they want)17
7414753237Carrying Capacity (K)Largest number of individuals of a population that a environment can support18
7414753238Logistic Population GrowthPopulation growth that levels off as population size approaches carrying capacity.19
7414753239Life HistoryTraits that affect an organism's schedule of reproduction and survival. (age of sexual maturation, how often produce, # of offspring during each event)20
7414753240SemelparityBig-bang reproduction, once, survival rate of offspring low, many produced at once, individuals die less afterwards, less stable environments (salmon, octopus)21
7414753241IteroparityRepeated reproduction, adults produce large number of offspring many times over years, more stable environments, provide better for offspring22
7414753242Density Independenta birth rate or a death rate that does not change as population density changes (population doesn't matter) (natural disasters)23
7414753243Density Dependentif death rate rises with increasing population density, the birth rate is dependent if it falls with increasing population density (population does matter) (predation, disease, competition, territoriality, waste accumulation, physiological factors)24
7414753244Population Dynamicsthe study of the variations in population size and the biotic and abiotic factors that cause them25
7414753245Metapopulationa group of populations occupying separated suitable habitats may be linked through immigration and emigration26
7414753246Demographic Transitionchange in a population from high birth and death rates to low birth and death rates27
7414753247Age Structurenumber of males and females of each age in a population28
7414753248Ecological Footprintmeasure of human impact on Earth's ecosystems. It's typically measured in area of wilderness or amount of natural capital consumed each year.29
7414985593Populationgroup of individuals of a single species living in same general area- rely on same resources, influenced by same environment factors, high likely hood of interacting and breeding30
7414994968Natalitybirthrate31
7415048009K-selection (density-dependent)Selection for life history traits that are sensitive to population density (humans, elephants) (pop close to K)32
7415054839R-selection (density-independent)selection for life history traits that maximize reproductive success in uncrowded environments (cockroaches, bacteria) (max reproductive success)33

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