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Rapid range expansion predicted for the Common Grackle(Quiscalus quiscula)in the near future under climate change scenarios

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Avian Research 2021年第4期12卷 569-575页

作者： Peter Capainolo Utku Perktaş Mark DEFellowes Division of Vertebrate Zoology-Department of Ornithology American Museum of Natural HistoryCentral Park West@79th StreetNew YorkNY 10024-5192USA People and Wildlife Research Group School of Biological SciencesUniversity of ReadingWhiteknightsReading RG66ASUK Depart-ment of Biology(Zoology Section Biogeography Research Laboratory)Faculty of ScienceHacettepe UniversityBeytepe06800 AnkaraTurkey

Background:Climate change due to anthropogenic global warming is the most important factor that will affect future range distribution of species and will shape future biogeographic *** much effort has been expended in understanding how climate change will affect rare and declining species we have less of an understanding of the likely consequences for some abundant *** Common Grackle(Quiscalus quiscula;Linnaeus 1758),though declining in portions of its range,is a widespread blackbird(Icteridae)species in North America east of the Rocky *** study examined how climate change might affect the future range distribution of Common ***:We used the R package Wallace and six general climate models(ACCESS1-0,BCC-CSM1-1,CESM1-CAM5-1-FV2,CNRM-CM5,MIROC-ESM,and MPI-ESM-LR)available for the future(2070)to identify climatically suitable areas,with an ecological niche modelling approach that includes the use of environmental ***:Future projections suggested a significant expansion from the current range into northern parts of North America and Alaska,even under more optimistic climate change ***,there is evidence of possible future colonization of islands in the Caribbean as well as coastal regions in eastern Central *** most important bioclimatic variables for model predictions were Annual Mean Temperature,Temperature Seasonality,Mean Temperature of Wettest Quarter and Annual ***:The results suggest that the Common Grackle could continue to expand its range in North America over the next 50 *** research is important in helping us understand how climate change will affect future range patterns of widespread,common bird species.

关键词： Annual mean temperature Climate change Common Grackle ecological niche modelling Range shift Seasonality

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Complex patterns of environmental niche evolution in Iberian columbines (genus Aquilegia, ranunculaceae)

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Journal of Plant Ecology 2015年第5期8卷 457-467页

作者： Rafael Jaime Julio M.Alcántara Jesús M.Bastida Pedro J.Rey Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de JaénCampus Las Lagunillass/n.Jaén E-23071Spain

Aims This study explores the patterns of niche differentiation in a group of seven closely related columbines(genus Aquilegia,ranunculaceae)from the Iberian *** of these columbines are subject to complex patterns of divergent selection across environ-ments,which partly explain the taxonomic structure of the *** suggests the hypothesis that niche divergence must have occurred along the process of diversification of the *** We used maxEnt to build environmental niche models of seven subspecies belonging to the three species of Aquilegia present in the Iberian *** these models,we compared the envi-ronmental niches through two different approaches:ENmtools and multivariate *** FindingsmaxEnt distributions conformed closely to the actual distribution of the study *** methods failed to uncover any clear patterns of niche differentiation or conservatism in Iberian *** analyses indicate the existence of dif-ferentiation along altitudinal gradients and along a gradient of climatic conditions determined by the summer precipitation and ***,climatic conditions related to winter tem-perature and precipitation,as well as soil properties,were equally likely to show conservatism or *** complex patterns of niche evolution we found suggest that Iberian Columbines have not been significantly constrained by forces of niche conservatism,so they could respond adaptively to the fast and profound climate changes in the Iberian Peninsula through the glacial cycles of the Pleistocene.

关键词： Aquilegia ecological niche modelling niche divergence niche conservatism evolution maxEnt ENmTools

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