ECOLOGY Ch8-11

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Can you name the Ecology Terms?

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DefinitionTerm
a pattern of distribution in a population in which individuals have a much higher probability of being found in some areas than in others
a group of individuals of a single species inhabiting a specific area
Study of the relationships between organisms and environment that are mediated by behavior
the variable traditionally plotted on the horizontal, or 'x' axis of a scatter plot
a portion of a larger population, with which it sustains a connection through immigration and emigration
a group of spatially separated subpopulations connected by active exchange of individuals among subpopulations
sex that produces larger, more energetically costly gametes (eggs or ova)
change in density of a predator population in response to increased prey density
symbolized as r, equals per capita birthrate minus per capita death rate
phenomena of a geographic scale rather than a local scale
phenomena that takes place on a local scale
line that best fits the relationship between 2 variables, x and y
a group of individuals that are physically distinctive and engage in specialized behavior within a social unit, such as a colony
a pattern of growth that produces a sigmoidal, or s-shaped, population growth curve
a branch of biology concerned with the study of social relations
an s-shaped pattern of population growth, with population size leveling off at the carrying capacity of the environment
chemical substance secreted by some animals for communication with other members of their species
group living generally involving some degree of cooperation between individuals
a population in which the the proportion of individuals in each age class is constant
the environmental factors that influence the growth, survival, and reproduction of a species
a distribution of individuals in a population in which individuals are uniformly spaced
number of offspring contributed by an individual relative to the number of offspring produced by other members of the population.
variable traditionally plotted on the vertical or 'y' axis of a scatter plot
the physical conditions under which a species might live, in the absence of interactions with other species
increase in animal feeding rate, which eventually levels off, that occurs in response to an increase in food availability
maximum per capita rate of population increase; may be approached under ideal environmental conditions for a species.
abiotic factors in the environment, such as floods and extreme temperature
DefinitionTerm
population growth that produces a j-shaped pattern of population increase
biotic factors in the environment, such as disease and competition
distribution of individuals among age groups in a population; often called age structure
a distribution in which individuals within a population have an equal chance of living anywhere within an area
increasing the complexity of the environment of captive animals to foster behaviors characteristic of the species in the wild
highly specialized sociality generally including individuals of more than one generation living together, cooperative care of young, and division of individuals into sterile, or no
lambda; ratio of the population size at 2 points in time
the conditions under which helping kin should be favored by natural selection
population growth in which generations do not overlap and in which successive generations differ in a size by a constant ratio
sexual selection occuring when members of one sex choose mates from among the members of the opposite sex on the basis of some anatomical or behavioral trait, generally leading to
sexual selection in which individuals of one sex compete among themselves for mates
overall fitness, which is determined by the survival and reproduction of an individual, plus the survival and reproduction of genetic relatives of the individual
the actual niche of a species whose distribution is restricted by biotic interactions such as competition, predation, disease, and parasitism
sex that produces smaller, less costly gametes (sperm or pollen)
results from differences in reproductive rates among individuals as a result of differences in mating success due to intrasexual selection, intersexual selection, or a mixture of t
k; the maximum population of a species that a particular ecosystem can sustain
the geographic range of an organism or the spatial arrangement of individuals in a local population
the total number of individuals, or biomass, of a species present in a specified area
a graphical summary of patterns of survival in a population
a table of age-specific survival and death, or mortality, rates in a population
selection in which individuals increase their inclusive fitness by helping increase the survival and reproduction of relatives that are not offspring
an area of population ecology concerned with the factors influencing the expansion, decline, or maintenance of populations, including rates of births, deaths, immigration, and emig
a group of individuals of the same age
the number of individuals in a population per unit area
active or passive downstream movement of stream organisms
a statistic used to measure how much a sample distribution differs from a theoretical distribution

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Created Feb 28, 2011ReportNominate