Environmental Drivers of Geographic Isolation in Three Pika Species in Northeast Asia
Rattachement africain : cn, us. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Geographic segregation among closely related species may arise from divergent environmental preferences or constraints of interspecific interactions. For these three congeneric pika species in northeastern Asia, the relative contributions of these mechanisms remain poorly understood. This study investigates three congeneric species: Ochotona coreana, Ochotona mantchurica, and Ochotona hyperborea, to identify how environmental gradients and interspecific niche relationships jointly shape their spatial segregation. We combined public records with field survey to build species distribution models and reduced sampling bias through regional mammal density to optimize environmental variables and background points. We quantified each species' potential distribution, identified key environmental drivers, and evaluated ecological niche overlap to assess whether isolation reflects potential competition or habitat divergence. The three species showed distinct distribution patterns and environmental associations. O. coreana had the smallest potential range, restricted to high-elevation forests and tundra of the Changbai Mountains in China and DPR Korea. O. hyperborea ranged from northeastern China to the Russian Far East, with suitability driven by precipitation seasonality, isothermality, and forest composition. O. mantchurica distribution across Hulunbuir and eastern Mongolian grasslands mainly associated with precipitation seasonality and slope. Niche overlap was high between O. mantchurica and O. hyperborea, but low for O. coreana and the other species. Limited sympatry between the two wide-ranging species suggests potential niche segregation. The three species are isolated by distinct environmental drivers and potential competitive interactions. Our findings clarify the environmental and ecological drivers shaping species boundaries in these closely related pika species and provide a framework for evaluating distributional dynamics in data-limited small mammals.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Environmental Drivers of Geographic Isolation in Three Pika Species in Northeast Asia
- Date Crossref
- 01/09/2026
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Yanbian University pays non établi dans la noticeUniversité ou école supérieure
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Beijing Normal University pays non établi dans la noticeUniversité ou école supérieure
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Nanjing Forestry University Laboratory of Animal Behaviour and Conservation pays non établi dans la noticeUniversité ou école supérieure
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State Forestry and Grassland Administration pays non établi dans la noticeOrganisme public
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American Museum of Natural History pays non établi dans la noticeInstitution
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Jilin Academy of Agricultural Sciences pays non établi dans la noticeStructure de recherche
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School of Natural Resources pays non établi dans la noticeUniversité ou école supérieure
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National Forestry and Grassland Administration Key Laboratory for Conservation Ecology in the Northeast Tiger and Leopard National Park Hunchun Jilin P. R. China pays non établi dans la noticeStructure de recherche
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Richard Gilder Graduate School pays non établi dans la noticeInstitution
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Jilin Changbai Mountain Academy of Sciences Jilin P. R. China pays non établi dans la noticeStructure de recherche
Yanbian University, Beijing Normal University et Laboratory of Animal Behaviour and Conservation — Nanjing Forestry University, avec 7 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.