Critical Habitat Identification for Canada Warbler, Olive-sided Flycatcher, and Common Nighthawk: Final Report 1 and 2
Information from over 1.5 million avian point count surveys were used with land cover, disturbance, topography, climate, and spatio-temporal variables to generate 9 model subsets that explained the variation in abundance of the three focal species across Canada. We used different model subsets to account for different spatial extents and co-linearity among variables. Poisson log-linear regression models were produced using a branching hierarchy model building process and bootstrap procedures to account for model uncertainty.
Model validation suggested that our habitat models had very good predictive and discriminatory power. We compared our population estimates to those derived from data and methods used by Partners in Flight. This exercise highlighted important discrepancies in population size estimates when using different analytical approaches and including off-road surveys. Although our habitat models were derived from the best available information, we provided a detailed list of future studies required to address remaining gaps in the breeding ecology and habitat modelling of these species.
Information from over 1.5 million avian point count surveys were used with land cover, disturbance, topography, climate, and spatio-temporal variables to generate 9 model subsets that explained the variation in abundance of the three focal species across Canada. We used different model subsets to account for different spatial extents and co-linearity among variables. Poisson log-linear regression models were produced using a branching hierarchy model building process and bootstrap procedures to account for model uncertainty.
Model validation suggested that our habitat models had very good predictive and discriminatory power. We compared our population estimates to those derived from data and methods used by Partners in Flight. This exercise highlighted important discrepancies in population size estimates when using different analytical approaches and including off-road surveys. Although our habitat models were derived from the best available information, we provided a detailed list of future studies required to address remaining gaps in the breeding ecology and habitat modelling of these species.
Plus de 1,5 million de relevés ponctuels d'oiseaux ont été utilisées en combinaison avec la couverture terrestre, les perturbations, la topographie, le climat et les variables spatio-temporelles pour générer 9 sous-ensembles de modèles expliquant la variation de l'abondance des trois espèces focales à travers le Canada. Nous avons utilisé différents sous-ensembles de modèles pour tenir compte des différentes étendues spatiales et de la colinéarité entre les variables. Des modèles de régression log-linéaire de Poisson ont été produits à l'aide d'un processus de construction de modèles de hiérarchie de branches et de procédures d'amorçage pour tenir compte de l'incertitude du modèle.
La validation du modèle a suggéré que nos modèles d'habitat avaient un très bon pouvoir prédictif et discriminant. Nous avons comparé nos estimations de population à celles dérivées des données et des méthodes utilisées par Partners in Flight. Cet exercice a mis en évidence des écarts importants dans les estimations de la taille de la population lors de l'utilisation de différentes approches analytiques et de l'inclusion d'enquêtes hors route. Bien que nos modèles d'habitat aient été dérivés des meilleures informations disponibles, nous avons fourni une liste détaillée des futures études nécessaires pour combler les lacunes restantes dans l'écologie de reproduction et la modélisation de l'habitat de ces espèces.
Simple
- Date (Publication)
- 2014-03-31
- Edition
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cit:edition
- Purpose
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Defining critical habitat is required to inform recovery strategies for Canada Warbler, Olive-sided Flycatcher, and Common Nighthawk
Defining critical habitat is required to inform recovery strategies for Canada Warbler, Olive-sided Flycatcher, and Common Nighthawk
Définir l'habitat essentiel de la Paruline du Canada, du Moucherolle à côtés olive et de l'Engoulevent d'Amérique pour éclairer les programmes de rétablissement.
- Status
- Completed
- Maintenance and update frequency
- Annually
- Theme
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Continents, countries, Canadian provinces.
Continents, countries, Canadian provinces.
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Canada
Canada
Canada
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Birds
Birds
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Olive-sided Flycatcher
Olive-sided Flycatcher
Moucherolle à côtés olive
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Canada Warbler
Canada Warbler
Paruline du Canada
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Common Nighthawk
Common Nighthawk
Engoulevent d'Amérique
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Research Topics
Research Topics
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Critical Habitat Identification
Critical Habitat Identification
Désignation d'Habitats Essentiels
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Resources Types
Resources Types
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Reports
Reports
Rapports
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- Access constraints
- Copyright
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- Distribution format
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- OnLine resource
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Publication
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WWW:LINK-1.0-http--link
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Haché et al. 2014 (Final report)
Haché et al. 2014 (Final report)
Haché et al. 2014 (Rapport final - anglais seulement)
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- 2021-12-03T15:59:24
- Metadata standard name
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ISO 19115:2003/19139
- Metadata standard version
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1.0
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Spatial extent
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