Bird ringing and nest recording in Britain and Ireland in 2013

Autor:	Jacquie A. Clark, Jeremy R. Blackburn, Robert A. Robinson, Carl J. Barimore, Lee J. Barber, Dorian Moss, Sabine Schäfer, Dave I. Leech, Allison J. Kew, Diana X. de Palacio, Mark J. Grantham, Ruth H. Walker, Bridget M. Griffin
Rok vydání:	2014
Předmět:	education.field_of_study Geography Nest Phenology Population Population growth Animal Science and Zoology Bird ringing Ringing Ornithology education Demography Global biodiversity
Zdroj:	Ringing & Migration. 29:90-150
ISSN:	2159-8355 0307-8698
DOI:	10.1080/03078698.2014.995529
Popis:	This is the 77th annual report of the British Trust for Ornithology's Ringing Scheme, incorporating the report of the Nest Record Scheme and covering work carried out and data processed in 2013. In recent years the schemes have focused on the collection of demographic data as part of our Integrated Population Monitoring programme. We expanded (from 10 to 17) the number of species for which we were able to construct integrated models and identified differences in the relative contributions of recruitment and adult survival to population change between increasing and decreasing species. Recruitment of young into the breeding population can be difficult to estimate. We investigated the use of proportions of birds in their second calendar year, or older, caught in the early summer using Blackbird Turdus merula as a model. Results showed that recruitment was a more important determinant of population change than survival. Changes in phenology are being documented widely and we carried out analyses looking at t...
Databáze:	OpenAIRE
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