Suitability, success and sinks: how do predictions of nesting distributions relate to fitness parameters in high arctic waders?

Détails

ID Serval
serval:BIB_46A1DCEEF711
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Suitability, success and sinks: how do predictions of nesting distributions relate to fitness parameters in high arctic waders?
Périodique
Diversity and Distributions
Auteur(s)
Pellissier L., Meltofte H., Hansen J., Schmidt N.M, Tamstorf M.P., Maiorano L., Aastrup P., Olsen J., Guisan A., Wisz M.S.
ISSN
1366-9516
Statut éditorial
Publié
Date de publication
2013
Peer-reviewed
Oui
Volume
19
Numéro
12
Pages
1496-1505
Langue
anglais
Résumé
AimAlthough habitat suitability maps derived from species distribution models (SDMs) are often assumed to highlight locations that can sustain healthy populations over time, the relationship between suitability scores and fitness parameters has rarely been tested thoroughly.
LocationZackenberg Valley, north-east Greenland.
MethodsUsing 14years of data (1997-2010) representing three wader species (dunlin Calidris alpina, sanderling Calidris alba and ruddy turnstone Arenaria interpres), we tested the relationships between modelled suitability and fitness parameters at nesting locations.
ResultsAmong the three species examined, only the ruddy turnstone exhibited significant relationships between suitability and nest success, but over time rather than space. During years with extensive snow cover in the landscape, the nesting sites of ruddy turnstone occurred in different habitats than were typically used across years. Moreover, in years with extensive snow cover, the ruddy turnstone initiated nests later and suffered from higher egg predation rates.
Main conclusionOur results suggest that SDMs derived from species occurrences that include years of low reproductive success may over-estimate the potential suitable habitat in the landscape. Whenever possible, variation in reproductive success should be considered when building models to inform species' response to environmental change.
species' response to environmental change.
Mots-clé
Demography, habitat, predation, shorebird, snow, species distribution models
Web of science
Création de la notice
03/05/2013 12:15
Dernière modification de la notice
03/03/2018 16:48
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