BIOL 2804 Lecture Notes - Lecture 7: Metapopulation, Periglaciation, Hooping
24 Dec 2019
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Document Summary
In practice it can be very complicated to determine populations. Why study populations: manage natural populations, control pests, manage rare and endangered species, help in managing ecosystems, help understanding diseases and epidemics, help anticipate changes associated with changing climate, understanding human population dynamics. Invasives: dispersion patterns, dispersion pattern spacing of individuals in a population, density and abundance, abundance the total number of individuals in an area (difficult to measure, how is abundance measured, plants, quadrants, hula hooping sampling. Line transects: animals, collecting/counting all organisms in given area or volume, traps (pitfall, sticky, vacuum, mark-recapture techniques, geographic connectivity, demographic structure, numbers of juveniles/adults, numbers of males/females, reproductive stages. Metapopulation a population broken into sets of sub-populations held together by dispersal or movements of individuals among them (ex: periglacial ponds) Demography: the study of statistics such as births, deaths, or the incidence of disease, which change the structure of populations. How do we divide into classes: typically at least, pre-reproductive, reproductive, post-reproductive.
