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Population Ecology

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With the explosion of human populations across the globe, the massive destruction of natural habitats, changes in climate, and the resulting threats to species throughout the tree of life, population ecology has become a vital field in biological science.

Specific mathematical and analytical tools predict changes in population size and design management strategies to save threatened species
geographic distribution of different species

two factors that determine range are:
(1) Abiotic factors - temperature, rainfall, the presence of geographical structures like mountains and oceans, and large scale ongoing and historical process such as continental drift
(2) Biotic factors - past and current presence of other species that provide habitat, food, or competition

Ranges are dynamic - in constant flux as abiotic and biotic factors change overtime