期刊
DIVERSITY AND DISTRIBUTIONS
卷 24, 期 9, 页码 1242-1251出版社
WILEY
DOI: 10.1111/ddi.12760
关键词
abundance; Appalachia; coal mining; colonization; persistence; valley fill
资金
- Kentucky Academy of Science
- McIntire-Stennis Cooperative Forestry Research Program
- University of Kentucky Appalachian Center
- Kentucky Society of Natural History
- Tracy Farmer Institute for Sustainability and the Environment
- Natural Sciences and Engineering Research Council (NSERC) of Canada
Aim: Population dynamics are often tightly linked to the condition of the landscape. Focusing on a landscape impacted by mountaintop removal coal mining (MTR), we ask the following questions: (1) How does MTR influence vital rates including occupancy, colonization and persistence probabilities, and conditional abundance of stream salamander species and life stages? (2) Do species and life stages respond similar to MTR mining or is there significant variation among species and life stages? Location: Freshwater and terrestrial habitats in Central Appalachia (South-eastern Kentucky, USA). Methods: We conducted salamander counts for three consecutive years in 23-headwater stream reaches in forested or previously mined landscapes. We used a hierarchical, N-mixture model with dynamic occupancy to calculate species- and life stage-specific occupancy, colonization and persistence rates, and abundance given occupancy. We examined the coefficients of the hierarchical priors to determine population variation among species and life stages. Results: Over 3 years, reference sites had greater salamander abundances and were occupied at a much higher rate than streams impacted by MTR. At sites impacted by MTR mining, most salamander species and life stages exhibited reduced initial occupancy, colonization rates, persistence rates and conditional abundance relative to reference stream reaches. Furthermore, the rates in MTR sites showed low variance, reinforcing that species and life stages were responding similar to MTR. Main conclusions: Salamander populations in landscapes modified by MTR mining exhibited significantly reduced vital rates compared to reference sites. Yet, similarity in responses across species suggests that management or restoration may benefit the entire salamander assemblage. For example, reforestation could reduce landscape resistance, repair altered hydrologic regimes and allow for higher rates of colonization and persistence in streams impacted by MTR.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据