Survey trends of North American shorebirds: population declines or shifting distributions?

Survey trends of North American shorebirds: population declines or shifting distributions?

We analyzed data from two surveys of fall migrating shorebirds in central and eastern North America to estimate annual trends in means per survey and to determine whether trends indicate a change in population size or might have been caused by other factors. The analysis showed a broad decline in me...

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Veröffentlicht in:Journal of avian biology 2007-01, Vol.38 (1), p.73-82
Hauptverfasser: Bart, Jonathan, Brown, Stephen, Harrington, Brian, I. Guy Morrison, R.
Format: Artikel
Sprache:eng
Schlagworte:
Animal migration behavior
Aviculture
Birds
Breeding
Depopulation
Population size
Population trends
Sandpipers
Wetland conservation
Wildlife conservation
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Zusammenfassung:We analyzed data from two surveys of fall migrating shorebirds in central and eastern North America to estimate annual trends in means per survey and to determine whether trends indicate a change in population size or might have been caused by other factors. The analysis showed a broad decline in means per survey in Atlantic Canada and the northeastern United States (North Atlantic region). For example, 9 of 9 significant trends in this region were
ISSN:0908-8857
1600-048X
DOI:10.1111/j.2007.0908-8857.03698.x