-
Subsistence Fishing, Ethnographic Resource Study
-
Shirley Fiske- Research Professor, University of Maryland Department of Anthropology
Located in
National Park Service Spotlights
/
2016 Spotlight on National Park Resources
-
Inventory of Rare Groundwater Invertebrates and Their Habitats in National Capital Parks East Parks
-
David Culver, Emeritus Professor, American University Department of Biology presented for Jenna Keany, Graduate Student American University Department of Environmental Science
Located in
National Park Service Spotlights
/
2016 Spotlight on National Park Resources
-
Proximity to Power: How the Preservation of Lafayette Square Paved the Way for the National Historic Preservation Act of 1966
-
Kathryn Smith- National Historic Landmarks & National Register Coordinator, NPS National Capital Region
Located in
National Park Service Spotlights
/
2016 Spotlight on National Park Resources
-
Closing Remarks from the Spotlight on National Park Resources in the National Capital Region
-
Perry Wheelock- Associate Regional Director, Resource Stewardship and Science, NPS, National Capital Region
Located in
National Park Service Spotlights
/
2016 Spotlight on National Park Resources
-
Disturbance−diversity models: what do they really predict and how are they tested?
-
The intermediate disturbance hypothesis (IDH) and the dynamic equilibrium model (DEM) are influential theories in ecology. The IDH predicts large species numbers at intermediate levels of disturbance and the DEM predicts that the effect of disturbance depends on the level of productivity. However, various indices of diversity are considered more commonly than the predicted number of species in tests of the hypotheses. This issue reaches beyond the scientific community as the predictions of the IDH and the DEM are used in the management of national parks and reserves. In order to compare responses with disturbance among measures of biodiversity, we used two different approaches of mathematical modelling and conducted an extensive meta-analysis. Two-thirds of the surveyed studies present different results for different diversity measures. Accordingly, the meta-analysis showed a narrow range of negative quadratic regression components for richness, but not evenness. Also, the two models support the IDH and the DEM, respectively, when biodiversity is measured as species richness, but predict evenness to increase with increasing disturbance, for all levels of productivity. Consequently, studies that use compound indices of diversity should present logical arguments, a priori, to why a specific index of diversity should peak in response to disturbance.
Located in
Resources
/
Climate Science Documents
-
Scenarios of future land use change around United States’ protected areas
-
Land use change around protected areas can diminish their conservation value, making it important to
predict future land use changes nearby. Our goal was to evaluate future land use changes around protected
areas of different types in the United States under different socioeconomic scenarios. We analyzed
econometric-based projections of future land use change to capture changes around 1260 protected
areas, including National Forests, Parks, Refuges, and Wilderness Areas, from 2001 to 2051, under different
land use policies and crop prices. Our results showed that urban expansion around protected areas
will continue to be a major threat, and expand by 67% under business-as-usual conditions.
Concomitantly, a substantial number of protected areas will lose natural vegetation in their surroundings.
National land-use policies or changes in crop prices are not likely to affect the overall pattern of land use,
but can have effects in certain regions. Discouraging urbanization through zoning, for example, can
reduce future urban pressures around National Forests and Refuges in the East, while the implementation
of an afforestation policy can increase the amount of natural vegetation around some Refuges throughout
the U.S. On the other hand, increases in crop prices can increase crop/pasture cover around some protected
areas, and limit the potential recovery of natural vegetation. Overall, our results highlight that future
land-use change around protected areas is likely to be substantial but variable among regions and
protected area types. Safeguarding the conservation value of protected areas may require serious consideration of threats and opportunities arising from future land use.
Located in
Resources
/
Climate Science Documents
-
2016 Spotlight on National Park Resources in the National Capital Region
-
To celebrate the National Park Service Centennial through talks and posters that highlight accomplishments in resources management and stewardship.
Located in
News & Events
/
Events
-
Hawaiʻi Volcanoes National Park
-
Hawai‘i Volcanoes National Park protects some of the most unique geological, biological, and cherished cultural landscapes in the world. Extending from sea level to 13,681 feet, the park encompasses the summits of two of the world's most active volcanoes - Kīlauea and Mauna Loa - and is a designated International Biosphere Reserve and UNESCO World Heritage Site.
Located in
LP Members
/
Organizations Search
-
National Park Service
-
The National Park Service preserves unimpaired the natural and cultural resources and values of the national park system for the enjoyment, education, and inspiration of this and future generations. The Park Service cooperates with partners to extend the benefits of natural and cultural resource conservation and outdoor recreation throughout this country and the world.
Located in
LP Members
/
Organizations Search
-
National Park Service: National Capital Region
-
The National Capital Region (NCR), headquartered in Washington, DC, administers the National Mall and monumental core parks that were established the same time the Nation's Capital was founded in 1792. These oldest national park areas, along with dozens of historic sites, natural areas and Civil War battlefields comprise today's National Capital Region of the National Park Service.
Located in
LP Members
/
Organizations Search
