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    Author(s): J.G. Bartlett; D.M. Mageean; R.J. O'Connor
    Date: 2000
    Source: Population and Environment: A Journal of Interdisciplinary Studies Volume 21, Number 5
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (1.7 MB)

    Description

    Spatially extensive analysis of satellite, climate, and census data reveals human-environment interactions of regional or continental concern in the United States. A grid-based principal components analysis of Bureau of Census variables revealed two independent demographic phenomena, a-settlement reflecting traditional human settlement patterns and p-settlement describing relative population growth correlated with recent construction in non-agricultural areas, notably in coastal, desert, and "recreational" counties and around expanding metropolitan areas. Regression tree analysis showed that p-settlement was differentially associated with five distinct combinations of seasonality, summer heat or cool, intensity of agriculture, and extent of "barren" land. Beta-settlement was greatest in coastal and desert areas, and coincided with national concentrations of threatened and endangered species.

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    Citation

    Bartlett, J.G.; Mageean, D.M.; O''Connor, R.J. 2000. Residential expansion as a continental threat to U.S. coastal ecosystems. Population and Environment: A Journal of Interdisciplinary Studies Volume 21, Number 5

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