Aggregation of nests in an Arctic-breeding shorebird and daily survival rates ... : Agrégation des nids chez un limicole se reproduisant dans l'Arctique et taux de survie journalier ...

Our current understanding of the factors that influence where birds nest is incomplete, yet such information is important for accurate demographic assessments. To address questions related to spatial distributions of shorebird nests and to evaluate factors that may affect nest distribution in these...

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Bibliographic Details
Main Author: Government Of Canada; Environment And Climate Change Canada
Format: Dataset
Language:unknown
Published: Government of Canada; Environment and Climate Change Canada 2023
Subjects:
Online Access:https://dx.doi.org/10.18164/cc47e79f-b84a-46b2-9b6a-688bea69197d
https://catalogue.ec.gc.ca/geonetwork/srv/eng/catalog.search#/metadata/cc47e79f-b84a-46b2-9b6a-688bea69197d
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Summary:Our current understanding of the factors that influence where birds nest is incomplete, yet such information is important for accurate demographic assessments. To address questions related to spatial distributions of shorebird nests and to evaluate factors that may affect nest distribution in these species, during 2017 and 2019, we studied a small population of semipalmated sandpiper (Calidris pusilla) breeding in the Central Canadian Arctic, near the Karrak Lake Research Station, in Nunavut. The spatial distribution of semipalmated sandpiper nests at this site suggested loose aggregation, with median nearest neighbour distances of 73.8 m and 92.0 m in 2017 and 2019, respectively. Evidence for an influence of nesting distribution on daily survival rate of nests, however, was mixed. Neither nearest neighbour distance nor local nest density had a significant effect on daily nest survival in 2017, but in 2019, the best approximating model included an effect of local nest density, which indicated that nests in ... : Notre compréhension actuelle des facteurs qui influencent le lieu de nidification des oiseaux est incomplète, pourtant ces informations sont importantes pour des évaluations démographiques précises. Pour répondre aux questions liées aux distributions spatiales des nids d'oiseaux de rivage et pour évaluer les facteurs qui peuvent affecter la distribution des nids chez ces espèces, en 2017 et 2019, nous avons étudié une petite population de bécasseaux semipalmés (Calidris pusilla) se reproduisant dans l'Arctique central canadien, près de la station de recherche du lac Karrak, au Nunavut. La répartition spatiale des nids de bécasseau semipalmé sur ce site a suggéré une agrégation lâche, avec des distances médianes entre les plus proches voisins de 73,8 m et 92,0 m en 2017 et 2019, respectivement. Les preuves d'une influence de la répartition des nids sur le taux de survie quotidien des nids étaient toutefois mitigées. Ni la distance du plus proche voisin ni la densité locale des nids n'ont eu d'effet ...