[MCN] PNAS - Housing growth puts squeeze on wilderness
lance at wildrockies.org
Thu May 12 12:12:34 EDT 2016
PNAS. January 12, 2010.
Housing growth in and near United States
protected areas limits their conservation value.
Volker C. Radeloff, Susan I. Stewart et al.
"If long-term trends continue, another 17 million
housing units will be built within 50 km of
protected areas by 2030 (1 million within 1 km),
greatly diminishing their conservation value. US
protected areas are increasingly isolated,
housing development in their surroundings is
decreasing their effective size "
" housing growth poses the main threat to
protected areas in the United States whereas
deforestation is the main threat in developing
"Wilderness areas enjoy the highest level of
protection, but that does not limit development
in their surroundings. In 2000, 20.5 million
housing units were within 50 km of a designated
wilderness area (18% of all housing units in the
conterminous United States), compared with only
4.4 million (12%) in 1940 (Fig. 1). Wilderness
areas also exhibited the highest housing growth
rates in their immediate vicinity (Fig. 2). The
number of housing units within 1 km of a
wilderness area grew from 9,400 in 1940 to 54,000
in 2000 (474% growth)."
Science 20 MARCH 2015. A safe operating space for
iconic ecosystems: Manage local stressors to
promote resilience to global change. Scheffer et
Physics Today August 2003. The Discovery of Rapid
Climate Change. Spencer Weart.
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