Expansion of American marten (Martes americana) distribution in response to climate and landscape change on the Kenai Peninsula, Alaska
| Autor: | Andrew P. Baltensperger, Falk Huettmann, John M. Morton |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Ecology biology Wildlife Climate change biology.organism_classification 010603 evolutionary biology 01 natural sciences Environmental niche modelling Habitat Peninsula biology.animal Martes americana Genetics Animal Science and Zoology Landscape ecology Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Nature and Landscape Conservation Marten |
| Zdroj: | Journal of Mammalogy. 98:703-714 |
| ISSN: | 1545-1542 0022-2372 |
| DOI: | 10.1093/jmammal/gyx011 |
| Popis: | Rapidly changing environmental conditions are influencing distributions of wildlife species in Alaska. Due to strict physiological requirements, the distribution of American martens (Martes americana) is theorized to be driven by changing habitat, climate, and other anthropogenic conditions. We aimed to quantify marten distributions on the Kenai Peninsula, Alaska, and compared historic and contemporary occurrence records. To illustrate changing distribution patterns, we developed predictive niche models for 2 decades and investigated patterns by relating environmental trends with predicted distributions. Museum and trapping records, supplemented by aerial videography detections for martens on the Kenai over the past century, served to train RandomForests-based niche models for 1988–2001 and 2002–2010. Change-detection analyses revealed an ongoing westward expansion of likely marten distribution on the Kenai Peninsula since at least 1988, and historic records indicated longer-term growth. Top predictors in the models included soil ecotype, landcover, distance to trails, and distance to recreation sites. Our research suggests that on the Kenai Peninsula, marten distribution is responding to a combination of landscape and climate effects that have contributed to expanding marten distributions over the past century. |
| Databáze: | OpenAIRE |
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