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Avian succession along ecological gradients： Insight from species-poor and species-rich communities of Sylvia warblers

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Current Zoology 2011年第3期57卷 307-317页

作者： alban guillaumet Roger PRODON EPHE CEFE-CNRS UMR 5175 1919 route de Mende 34293 Montpellier cedex 5 France Department of Wildlife Fisheries & Aquaculture Mail Stop 9690 Mississippi State University Mississippi MS 39762 USA

The mechanisms responsible for species replacement during ecological successions is a long-standing and open debate. In this study, we examined the distribution of the Sardinian warbler Sylvia melanocephala along two grassland-to-forest gradients, one in a high-diversity area （Albera-Aspres chain in Catalonia： eight Sylvia warbler species） and one in a low-diversity area （Mount Hymittos in Greece： four species）. In Catalonia, distribution models suggested that the apparent exclusion of S. melanocephala from the open and forest ends of the gradient may be explained entirely by the preference of S. melanocephala for mid-successional shrublands. However, a joint analysis of both data sets revealed that： 1） S. melanocephala was more evenly dis- tributed along the vegetation gradient in Greece, suggesting ecological release in the low-diversity area; and 2） a distribution model assuming interspecific competition （based on the distribution of Sylvia species showing a negative co-occurrence pattern with S. melanocephala） had a significantly higher predictive ability than a distribution model based on habitat variables alone. Our study supports the view that species turnover along ecological gradients generally results from a combination of intrinsic preferences and interspecific competition [Current Zoology 57 （3）： 307-317, 2011].

关键词： Avian succession Cross-validation Diffuse competition Ecological release GLM Habitat selection Nichewidening Species distribution model

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Annoying neighbors： Multi-scale distribution determinants of two sympatric sibling species of birds

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Current Zoology 2015年第1期61卷 10-22页

作者： alban guillaumet Guillaume LEOTARD EPHE CEFE-CNRS UMR 5175 1919 route de Mende 34293 Montpellier cedex 5 France Current address: Office of Research/PIPES. 200 W. Kawili Street Army Reserve Building A Hilo Hawaii 96720 USA CEFE-CNRS Departement Interaction Ecologie et Societes 1919 route de Mende 34293 Montpellier cedex 5 France

We tested the role of interspecific competition in driving species distribution at multiple spatial scales using two sibl- ing species of Galerida larks （G cristata and G. theklae） in Morocco （sympatry）, Balearic islands （G theklae only） and Israel （G cristata only）. We first investigated regional-scale determinants by contrasting allopatric versus sympatric patterns in five distinct habitat types. We next focused on a single habitat used by both species, the coastal sand dunes. Dune quadrats were established along the Moroccan coast and completed by a quadrat in the nearest distinct landscape habitat. Poisson regressions were used to model Galerida counts together with ecological predictors as concerns the climate, topography, vegetation structure and soil gra- nulometry. At the local scale, both species preferred grey dunes over white sand dunes, and both were negatively affected by the abundance of the congeneric species in the dune. However, we found that G theklae tended to replace G. cristata in more arid sand dunes, even if the transition was not strictly clinal. Instead, the transition occurred when the surrounding landscape changed from coastal wetlands to bathas （grasslands with shrubs）, highlighting the importance of habitat composition at the landscape scale. The fact that G cristata used bathas in allopatry, but not in sympatry, suggested that the competitive environment contri- buted to determine sand dune occupancy. We suggest that landscape-level effects may be pivotal in explaining species distribu- tion not only at the local scale, by affecting the pool of potential immigrants, but also at the regional scale, by contributing to species＇ range limit [Current Zoology 61 （1）： 10-22, 2015].

关键词： Allopatry Ecological release Galerida lark Interspecific competition Landscape Range limit

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Geographic segregation and evidence of density-dependent changes in sex ratios in an abundant colonial waterbird

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Integrative Zoology 2014年第5期9卷 570-582页

作者： Brian S.DORR Katie C.HANSON-DORR Travis L.DeVAULT alban guillaumet Scott C.BARRAS United States Department of Agriculture Wildlife Services(USDA-WS)National Wildlife Research CenterMississippi Field StationMississippi StateMississippiUSA USDA-WS National Wildlife Research CenterOhio Field StationSanduskyOhioUSA Department of Wildlife Fisheries and AquacultureMississippi State UniversityMississippi StateMississippiUSA USDA-WS MoseleyVirginiaUSA University of Hawaii Office of Research/PIPESHiloHIUSA.

Demographic information,such as geographic segregation of sexes and sex ratio data,is needed to develop,model and evaluate conservation and management strategies for wildlife.A variety of physiological,behavioral and environmental factors can influence segregation of sexes and sex ratios,many of which originate with density-dependent *** from 50:50 sex ratios of double-crested cormorants(Phalacrocorax auritus)collected during control efforts in breeding and wintering areas across their eastern range of the USA were evaluated using using a Z-test as well as Stouffer’s weighted *** addition,a specifically-designed randomization test was used to evaluate density-dependent effects on primary sex ratios in cormorants from egg collections and colony nest count data over a 21-year *** collected from breeding colonies were strongly male-biased,whereas cormorants collected from feeding flocks were slightly biased toward *** were partly segregated by sex on the wintering grounds,with significantly more males found in areas with intensive channel catfish *** null hypothesis that females produced a balanced sex ratio independent of number of nesting cormorants was rejected:more male embryos were produced during rapid population growth,whereas at maximum nesting number more female embryos were *** populations stabilized,the sex ratio was more *** examination of sex ratios indicates that different management methods and locations result in sex-biased culling of ***-biased culling in cormorants could make population reduction efforts more efficient and reduce overall *** suggest further research to examine density-dependent effects on primary sex ratios documented here.

关键词： Ashmole’s halo management Phalacrocorax auritus population growth sex ratio theory

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Systematics of the avian family Alaudidae using multilocus and genomic data

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Avian Research 2023年第2期14卷 137-152页

作者： Per Alstrom Zeinolabedin Mohammadi Erik D.Enbody Martin Irestedt Derek Engelbrecht Pierre-Andre Crochet alban guillaumet Loïs Rancilhac B.Irene Tieleman Urban Olsson Paul F.Donald Martin Stervander Animal Ecology Department of Ecology and GeneticsEvolutionary Biology CentreUppsala UniversityNorbyvagen 18DSE-75236UppsalaSweden Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing100101China Department of Biology Faculty of SciencesGolestan UniversityGorganGolestanIran Department of Medical Biochemistry and Microbiology Uppsala University75123UppsalaSweden Department of Biomolecular Engineering University of CaliforniaSanta Cruz95060Santa CruzCAUSA Department of Bioinformatics and Genetics Swedish Museum of Natural HistoryP.O.Box 50007SE-10405StockholmSweden Department of Biodiversity University of LimpopoPrivate Bag X1106Sovenga0727South Africa CEFE CNRSUniv MontpellierEPHEIRDMontpellierFrance Department of Biological&Environmental Sciences Troy UniversityTroyAL36082USA Groningen Institute for Evolutionary Life Sciences University of GroningenNijenborgh 79747 AGGroningenthe Netherlands Department of Biological and Environmental Sciences University of GothenburgP.O.Box 463SE-40530GothenburgSweden Gothenburg Global Biodiversity Centre P.O.Box 461SE-40530GothenburgSweden BirdLife International The David Attenborough BuildingPembroke StCambridgeCB23QZUK Department of Zoology University of CambridgeDowning StreetCambridgeCB23EJUK Bird Group Natural History MuseumAkeman StreetTringHertfordshireHP236APUnited Kingdom

The family Alaudidae,larks,comprises 93-100 species(depending on taxonomy)that are widely distributed across Africa and Eurasia,with single species extending their ranges to North and northernmost South America and Australia.A decade-old molecular phylogeny,comprising~80%of the species,revealed multiple cases of parallel evolution and large variation in rates of morphological evolution,which had misled taxonomists into creating many non-monophyletic ***,we reconstruct the phylogeny of the larks,using a dataset covering one mitochondrial and 16 nuclear loci and comprising all except one of the currently recognised species as well as several recently proposed new species(in total 133 taxa;not all loci available for all species).We provide additional support using genome-wide markers to infer a genus-level phylogeny based on near-complete generic sampling(in total 51 samples of 44 taxa across 40 species).Our results confirm the previous findings of rampant morphological convergence and divergence,and reveal new cases of paraphyletic *** propose a new subfamily classification,and also that the genus Mirafra is divided into four genera to produce a more balanced generic classification of the *** study supports recently proposed species splits as well as some recent lumps,while also questioning some of the *** comprehensive phylogeny will form an important basis for future studies,such as comparative studies of lark natural history,ecology,evolution and conservation.

关键词： Phylogeny Phylogenomics Multispecies coalescent Lark Paraphyly Taxonomy Subfamily description

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