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On the potential of documenting decadal-scale avifaunal change from before-and-after comparisons of museum and observational data across North America

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Avian Research 2022年第1期13卷 1-10页

作者： Fernando Machado-Stredel Benedictus Freeman Daniel Jiménez-Garcia Marlon E.Cobos Claudia Nunez-Penichet Laura Jiménez Ed Komp Utku Perktas Ali Khalighifar Kate Ingenloff Walter Tapondjou thilina de silva Sumudu Fernando Luis Osorio-Olvera A.Townsend Peterson Biodiversity Institute and department of Ecology and Evolutionary Biology University of KansasLawrenceKSUSA Centro de Agroecología y Ambiente Instituto de CienciasBenemérita Universidad Autónoma de PueblaPueblaPueblaMexico Information and Telecommunication Technology Center(ITTC) University of KansasLawrenceKSUSA department of Biology(Zoology Section-Biogeography Research Lab.) Faculty of ScienceHacettepe UniversityBeytepeAnkaraTurkey department of Ornithology American Museum of Natural HistoryCentral Park West at 79th StreetNew YorkNYUSA departamento de Ecología de la Biodiversidad Instituto de EcologíaUniversidad Nacional Autónoma de MéxicoCiudad de MéxicoMéxico

Studies of biodiversity dynamics have been cast on either long(systematics)or short(ecology)time scales,leaving a gap in coverage for moderate time scales of decades to ***-scale biodiversity information resources now available offer opportunities to fill this gap for many parts of the world via detailed,quantitative comparisons of assemblage composition,particularly for regions without rich time series *** explore the possibility that such changes in avifaunas across the United States and Canada before and after the first three decades of marked global change(i.e.,prior to 1980 versus after 2010)can be reconstructed and characterized from existing primary biodiversity *** an illustration of the potential of this methodology for sites even in regions not as well sampled as the United States and Canada,we also explored changes at a single site in Mexico(Chichén-Itzá).We analyzed two large-scale datasets:one summarizing bird records in the United States and Canada before 1980,and one for the same region after *** used probabilistic inventory completeness analyses to identify sites that have avifaunas that have likely been inventoried more or less *** prepared detailed comparisons between the two time periods to analyze species showing distributional changes over the time period *** identified 139 sites on a 0.05°grid that were demonstrably well-inventoried before 1980 in the United States and Canada,of which 108 were also well-inventoried after *** presence/absence patterns between the two time periods for 601 bird species,we found significant spatial autocorrelation in overall avifaunal turnover(species gained and lost),but not in numbers of species *** noted potential northward retractions of ranges of several species with high-latitude(boreal)distributions,while other species showed dominant patterns of population loss,either rangewide(e.g.,Tympanuchus cupido)or regionally(e.g.,Thryomanes bewickii).We dev

关键词： Biodiversity dynamics Birds Climate change Inventory completeness Time scale Turnover

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