Why is timing of bird migration advancing when individuals are not ? Jennifer
نویسندگان
چکیده
School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK Conservation Science Group, Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK British Trust for Ornithology, The Nunnery, Thetford, Norfolk IP24 2PU, UK Farlington Ringing Group, Solent Court Cottage, Chilling Lane, Warsash, Southampton SO31 9HF, UK South Iceland Research Centre, University of Iceland, Bankavegi, IS-800 Selfoss and Gunnarsholt, IS-851, Hella, Iceland
منابع مشابه
Why is timing of bird migration advancing when individuals are not?
Recent advances in spring arrival dates have been reported in many migratory species but the mechanism driving these advances is unknown. As population declines are most widely reported in species that are not advancing migration, there is an urgent need to identify the mechanisms facilitating and constraining these advances. Individual plasticity in timing of migration in response to changing ...
متن کاملWhy is timing of bird migration advancing when individuals are not ? Jennifer A . Gill
School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK Conservation Science Group, Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK British Trust for Ornithology, The Nunnery, Thetford, Norfolk IP24 2PU, UK Farlington Ringing Group, Solent Court Cottage, Chilling Lane, Warsash, Southampton SO31 9HF, UK South Icel...
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The exploration of animal migration has entered a new era with individual-based tracking during multiple years. Here, we investigated repeated migratory journeys of a long-distance migrating bird, the marsh harrier Circus aeruginosus, in order to analyse the variation within and between individuals with respect to routes and timing. We found that there was a stronger individual repeatability in...
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Migration is a fundamental stage in the life history of several taxa, including birds, and is under strong selective pressure. At present, the only data that may allow for both an assessment of patterns of bird migration and for retrospective analyses of changes in migration timing are the databases of ring recoveries. We used ring recoveries of the Barn Swallow Hirundo rustica collected from 1...
متن کاملWhy Do They Want to Migrate from Rural Areas? A Psychological Perspective from Iran
While migration is a basic element of population dynamics in most societies, in Iran, rural-urban migration is a particular concern of both social scientists and policy makers. Rural-urban migration accounts for over half of the growth of most Iranian cities. On the other hand, this movement is often cited as having negative effects on rural area, including a shortage of supply of agricultural ...
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