Common Goldeneye (Bucephala clangula)

Eadie, John M.; Lumsden, H. G.

doi:10.2173/bna.170

Cited by 40 publications

(44 citation statements)

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“…As with the Bufflehead, goldeneye species are much less abundant in the prairies (Eadie et al 1995), which is reflected in our predictions. Goldeneye abundance was most closely associated with amount of open water, followed by precipitation seasonality and the mean maximum July temperature.…”

Section: Variablesupporting

confidence: 66%

Models to predict the distribution and abundance of breeding ducks in Canada

Barker¹,

Cumming²,

Darveau³

2014

ACE

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ABSTRACT. Detailed knowledge of waterfowl abundance and distribution across Canada is lacking, which limits our ability to effectively conserve and manage their populations. We used 15 years of data from an aerial transect survey to model the abundance of 17 species or species groups of ducks within southern and boreal Canada. We included 78 climatic, hydrological, and landscape variables in Boosted Regression Tree models, allowing flexible response curves and multiway interactions among variables. We assessed predictive performance of the models using four metrics and calculated uncertainty as the coefficient of variation of predictions across 20 replicate models. Maps of predicted relative abundance were generated from resulting models, and they largely match spatial patterns evident in the transect data. We observed two main distribution patterns: a concentrated prairie-parkland distribution and a more dispersed pan-Canadian distribution. These patterns were congruent with the relative importance of predictor variables and model evaluation statistics among the two groups of distributions. Most species had a hydrological variable as the most important predictor, although the specific hydrological variable differed somewhat among species. In some cases, important variables had clear ecological interpretations, but in some instances, e.g., topographic roughness, they may simply reflect chance correlations between species distributions and environmental variables identified by the model-building process. Given the performance of our models, we suggest that the resulting prediction maps can be used in future research and to guide conservation activities, particularly within the bounds of the survey area. Des modèles pour prédire la répartition et l'abondance des canards nichant au CanadaRÉSUMÉ. Le manque de connaissances détaillées sur l'abondance et la répartition des espèces de sauvagine dans l'ensemble du Canada limite notre capacité à conserver et à gérer leurs populations de façon efficace. Au moyen de 15 années de données provenant d'inventaires aériens réalisés par transects, nous avons modélisé l'abondance de 17 espèces ou groupes d'espèces de canards dans les parties méridionale et boréale du Canada. Nous avons inclus 78 variables relatives au climat, à l'hydrologie et au paysage dans des modèles amplifiés d'arbres de régression, pour lesquels des courbes de réponse flexibles et les interactions multidimensionnelles entre les variables ont pu être examinées. Nous avons évalué la capacité de prédiction des modèles à l'aide de quatre paramètres et avons estimé l'incertitude en calculant le coefficient de variation des prédictions d'un jeu de 20 répétitions de modèles. Des cartes de l'abondance relative prédite ont été produites à partir des modèles et elles correspondent bien au profil spatial des données récoltées dans les transects. Nous avons observé deux tendances principales dans la répartition : l'une centrée sur les Prairies et les forêts-parcs, l'autre plus dispersée à la grandeur du Canada. Ces ten...

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Section: Variablesupporting

confidence: 66%

Models to predict the distribution and abundance of breeding ducks in Canada

Barker¹,

Cumming²,

Darveau³

2014

ACE

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“…Numerous studies have shown that clutch size of Common Goldeneye is variable with females typically producing 7.4 to 10.3 eggs per nest (Eadie et al 1995). We found that average clutch size of Common Goldeneye in the Buffalo Lake Moraine in 2004 was >14% higher than other reported values, which may reflect a high background level of brood parasitism in a landscape where nest sites are limited.…”

Section: Discussioncontrasting

confidence: 49%

Nest Boxes Facilitate Local-Scale Conservation of Common Goldeneye (Bucephala clangula) and Bufflehead (Bucephala albeola) in Alberta, Canada

Corrigan¹,

Scrimgeour²,

Paszkowski³

2011

ACE

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We tested the general predictions of increased use of nest boxes and positive trends in local populations of Common Goldeneye (Bucephala clangula) and Bufflehead (Bucephala albeola) following the large-scale provision of nest boxes in a study area of central Alberta over a 16-year period. Nest boxes were rapidly occupied, primarily by Common Goldeneye and Bufflehead, but also by European Starling (Sturnus vulgaris). After 5 years of deployment, occupancy of large boxes by Common Goldeneye was 82% to 90% and occupancy of small boxes by Bufflehead was 37% to 58%. Based on a single-stage cluster design, experimental closure of nest boxes resulted in significant reductions in numbers of broods and brood sizes produced by Common Goldeneye and Bufflehead. Occurrence and densities of Common Goldeneye and Bufflehead increased significantly across years following nest box deployment at the local scale, but not at the larger regional scale. Provision of nest boxes may represent a viable strategy for increasing breeding populations of these two waterfowl species on landscapes where large trees and natural cavities are uncommon but wetland density is high

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“…For grebes, mergansers, goldeneye, buffleheads, scoters and eiders (this group constitutes all of the taxa whose recoveries were estimated to exceed 1 breeding season, with the exception of loons), we assumed that all birds of breeding age would have maintained breeding territories and would have attempted to produce young had the spill not killed them. This assumption is supported by information obtained from Eadie et al (1995), which indicates that over 90% of breeding-age common goldeneyes breed in a given year. For these species (taxa), we calculated the proportion of the population in each age class using the survival rates.…”

mentioning

confidence: 70%

Scaling restoration to achieve quantitative enhancement of loon, seaduck, and other seabird populations

Sperduto

Powers²,

Donlan³

2003

Mar. Ecol. Prog. Ser.

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The 1996 'North Cape' oil spill along the Rhode Island coast led to the deaths of at least 2292 birds, resulting in an estimated 6275 bird-years lost (adjusted by expected longevity and productivity). We synthesize information on bird population dynamics to develop an appropriate restoration strategy. Marine birds (seaducks, loons, grebes) with natural recovery periods estimated to exceed 1 yr accounted for 87% of the total bird-years lost. Marine birds (gulls, cormorants, alcids, gannets) with recovery estimated to be less than a year accounted for 10% of injuries. Common loons Gavia immer and common eiders Somateria mollissima were selected as targets for restoration because of regional concern over their population status and the magnitude of lost bird-years. Three restoration options were evaluated for loons: nest site protection; nest site enhancement; and public education/outreach. Nest site enhancement opportunities were limited and benefits from public education/outreach efforts were uncertain. Nest site protection was preferred for both loons and eiders because nest site availability and/or quality currently limit(s) productivity. This option assumes that preventing future productivity loss compensates for productivity loss that resulted from the 'North Cape' oil spill. This assumption is supported by regional productivity estimates for the 2 target species, is consistent with scientific literature, and represents the consensus of expert opinions. Based on a series of scaling calculations, protection of 25 nest sites for a 100 yr period is expected to balance the loss of 2920 loon-years. Protection of 315 eider nest sites over a 100 yr period would replace 2605 bird-years lost (remaining marine bird injury). Calculations adjust future production credit through economic discounting of 3% yr

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Common Goldeneye (Bucephala clangula)

Cited by 40 publications

References 0 publications

Models to predict the distribution and abundance of breeding ducks in Canada

Models to predict the distribution and abundance of breeding ducks in Canada

Nest Boxes Facilitate Local-Scale Conservation of Common Goldeneye (Bucephala clangula) and Bufflehead (Bucephala albeola) in Alberta, Canada

Scaling restoration to achieve quantitative enhancement of loon, seaduck, and other seabird populations

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