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Habitat heterogeneity influences avian feeding guild composition in urban landscapes:evidence from Bhubaneswar,India

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Ecological Processes 2021年第1期10卷 418-427页

作者： Bibhu Prasad Panda B.Anjan Kumar Prusty Biswajit Panda Abanti Pradhan Siba Prasad Parida Environmental Sciences Department of Chemistry and BBRCITERSiksha‘O’Anusandhan(Deemed to be University)BhubaneswarOdishaIndia Department of Natural Resources Management and Geoinformatics Khallikote UniversityBerhampurOdishaIndia Department of Stem Cell Facility All India Institute of Medical SciencesNew DelhiIndia Department of Zoology School of Applied SciencesCenturion University of Technology and ManagementBhubaneswarOdishaIndia.

Background:Habitat heterogeneity clearly distinguished in terms of availability of food and habitat resources and landscape features(natural or human-modified)play a crucial role in the avian species composition and population *** examine this,a study was carried out in Bhubaneswar,India,to understand the ecological niche distinction in birds based on habitat *** sampling was conducted in 30 sampling sites covering six different habitat types in a predominantly urban landscape of Bhubaneswar for understanding the ecological niche in *** birds were classified into 11 types of foraging ***:The insectivorous guild had the highest bird species richness(181 species)and the omnivorous guild had the lowest(11 species).The piscivorous guild and wetland habitat had the strongest linkage,followed by the insectivorous guild and agricultural *** frugivorous guild was significantly correlated with forest habitats(r=0.386,pbird species in certain habitat types,viz.,agricultural lands(52%,115 species)and forest patches(50%,111 species).Conclusion:The present study highlights the importance of agricultural lands,forest patches,parks and gardens,and wetlands inside the cityscape for supporting *** is therefore suggested that such habitats should be conserved inside an urban area to protect native ***,the city development plan must invariably include strategies for conserving the forest patches inside the urban *** must be taken to restrain the degradation of agricultural lands and reduce their utilization for non-agricultural purposes,which will help in further reducing the bird population decline in the urban landscape.

关键词： bird species richness Community structure Feeding guild Habitat characteristics Urban area

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