3 clumped individuals aggregate in patches uniform

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Unformatted text preview: on size D ensity - number of individuals per unit area or volume D ispersion - of a population is the pattern of spacing among individuals within the geographic boundaries I mmigration - the influx of new individuals into a population from other areas E migration - the movement of individuals out of a population T erritoriality - the defense of a bounded physical space against encroachment by other individuals D emography - is the study of the vital statistics of populations and how they change over time S emelpority - reproduction in which an organism produces its entire offspring in a single event; also known as big bang reproduction P er capita rate of increase - difference between per capita birth rate and per capita death rate A llec effect - individuals may have a more difficult time surviving or reproducing if the population size is too small P opulation dynamics - study of how completely separated populations of one species that interact through immigration and emigration M etapopulation - a group of spatially separated populations of one species that interact through immigration and emigration 2. The various sampling techniques to determine densities and total population sizes are random sampling, mark recapture, and estimate density from some index of population size. 3. Clumped- individuals aggregate in patches. Uniform- individuals are evenly spaced Random- when the position of each individual is independent of the others and spacing is unpredictable Clumped is the most common; uniform is a pattern of dispersion that may result from direct interactions between individuals in a population. 4. A life table is an age-specific summary of the survival pattern of a population. A survivorship curve is a graphic way of representing the data in a life table. 5. T ype I Curve : flat at start, reflecting low death rates during early and middle life, and then drops steeply as death rates increase among older age groups (example: humans, mammals that have few offspring and provide good care) T ype...
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