By Jeff Mulhollem April 19, 2017 .. .. UNIVERSITY PARK, Pa. — Fragmentation of ecologically important core forests within the northern Appalachians — driven by pipeline and access road construction — is the major threat posed by shale-gas development, according to researchers, who recommend a change in infrastructure-siting policies to head off loss of this critical habitat.
Highlights: Pipelines comprised the largest portion of the shale gas industry footprint; Pipelines were the largest contributor to the fragmentation of core forest; Loss of core forest was double on private land compared to public land; Methods to consolidate pipelines with other infrastructure should be used; New pads should be placed near existing pipelines to reduce further fragmentation.
This new book chapter highlights the unique characteristics of soils across the United States and discusses their genesis. The chapter is part of a new International Encyclopedia of Geography.
Highlights • We developed a Browse Extension to simulate effects of ungulates on the growth and survival of plant species cohorts. • The capabilities of the extension were explored via case studies in the Allegheny National Forest and Isle Royale National Park, USA. • In both model applications, browsing reduced total aboveground live biomass and caused shifts in forest composition. • Simulations that included effects of browsing resulted in successional patterns that were similar to those observed in the study regions. • Neglecting effects of browsing when modeling forest succession may result in flawed predictions of forest biomass and composition in some ecosystems.