AP ES Ch 6 Flashcards

7733372210	Biotic Potential	The maximum reproductive rate an organism can have if they have unlimited resources and ideal environmental conditions	0
7733393376	Exponential Growth	Growth at a constant rate of increase per unit time. J curve	1
7733404434	carrying capactiy	The maximum number of individuals of one species that can be supported by a particular ecosystem on a long term basis	2
7733454812	Population Crash	A sudden decline in population caused by predation, waste accumulation or resource depletion (also called dieback)	3
7733467132	Logistic Growth	growth rates regulated by internal and external factors that establish an equilibrium with environmental resources. S curve	4
7733481541	Density dependent factors	Biotic factors that tend to reduce population size when the population increases like food, space, diseases, predation.	5
7733493921	Density Independent Factors	Bbiotic factors that may reduce population size regardless of size of population like fire, temp, floods, droughts	6
7733505702	r-selected Species	Organisms with high reproductive rate (r) but little or no care to offspring which have high mortality. Ex: seeds, most insects	7
7733518167	K-selected species	Organisms whose growth slows as the carrying capacity (K) of their environment is approached. Produce few offspring, care for young and have longer generation times. ex: elephants, wolves	8
7733532434	Environmental Resistance	All the limiting factors that tend to reduce population growth rates and set the maximum allowable population size (carrying capacity)	9
7733539153	Natality	ratio of number of births to the size of the population. birth rate	10
7733543163	Mortality	ratio of number of deaths to the size of the populations. death rate	11
7733547810	Immigration	number of individuals entering a population	12
7733551205	Emigration	Number of individuals leaving a population	13
7733556000	Life span	The longest duration of life reached by a type of organism	14
7733560320	Survivorship	percentage of the population reaching a given age, or the proportion of the maximum life span of the species reached by any individual	15
7733569170	Life expectancy	The average age that individuals born in a particular time and place can be expected to live	16
7733575732	Biotic factors	caused by living organisms	17
7733580554	Abiotic factors	caused by nonliving components of the environment.	18
7733589391	Intrinsic factors	operating within individual organisms or between organisms of the same species	19
7733594214	Extrinsic factors	Imposed from outside the population	20
7733597402	Interspecific competition	competition for resources between members of a DIFFERENT species in a community	21
7733615283	Intraspecific species	Competition for resources among members of the SAME species in a community	22
7733624050	Island Biogeography	The study of rates of colonization and extinction of species on islands, or other isolated areas, based on size, shape and distance from inhabited regions.	23
7733631750	Genetic Drift	The gradual changes in gene frequencies in a SMALL population due to random events.	24
7733639750	Founder effect/demographic bottleneck	A population founded when just a few members of a specie survive a catastrophic event or colonize new habitat geographically isolated from other members of the same species	25
7733647865	Minimum Viable population size	the number of individuals needed for long term survival of rare and endangered species	26
7733653769	Metapopulation	a collection of populations that have regular or intermittent gene flow between geographically separate units.	27