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Rapid population decline in red knots: fitness consequences of decreased refuelling rates and late arrival in Delaware Bay

Dates

Year
2004

Citation

Baker, A J, Gonzalez, P M, Piersma, T, Niles, L J, do Nascimento Ide, L, Atkinson, P W, Clark, N A, Minton, C D, Peck, M K, and Aarts, G, 2004, Rapid population decline in red knots: fitness consequences of decreased refuelling rates and late arrival in Delaware Bay: Proc Biol Sci, v. 271, iss. 1541, 875–882 p.

Summary

Most populations of migrant shorebirds around the world are in serious decline, suggesting that vital condition-dependent rates such as fecundity and annual survival are being affected globally. A striking example is the red knot (Calidris canutus rufa) population wintering in Tierra del Fuego, which undertakes marathon 30,000 km hemispheric migrations annually. In spring, migrant birds forage voraciously on horseshoe crab eggs in Delaware Bay in the eastern USA before departing to breed in Arctic polar deserts. From 1997 to 2002 an increasing proportion of knots failed to reach threshold departure masses of 180-200 g, possibly because of later arrival in the Bay and food shortage from concurrent over-harvesting of crabs. Reduced nutrient [...]

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Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1098/rspb.2003.2663

Citation Extension

citationTypeJournal Article
journalProc Biol Sci
parts
typePages
value875–882
typeVolume
value271
typeIssue
value1541

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