RobertVaillancourtDrapeau2010

Référence

Robert, M., Vaillancourt, M.-A., Drapeau, P. (2010) Characteristics of nest cavities of Barrow's Goldeneyes in eastern Canada. Journal of Field Ornithology, 81(3):287-293. (URL )

Résumé

Barrow's Goldeneyes (Bucephala islandica) are secondary cavity nesters found in western North America and, to a lesser extent, in eastern North America. The eastern North American population is concentrated in the province of Québec and totals about 2000 pairs. Characteristics of nest cavities used by Barrow's Goldeneyes have been described in western North America, but no nest cavities have been found in eastern North America. From 2004 to 2008, we searched for nest cavities in the species’ core breeding area in the boreal forests north of the St. Lawrence River. We captured 12 adult females on their breeding grounds and fitted them with transmitters, but none apparently nested so we conducted ground searches in areas near lakes where paired birds were observed. We found 11 cavities, with 10 in dead, decaying trees and one in the dead part of a dying tree. Nine cavities were in white birch (Betula papyrifera) trees. Mean cavity height was 3.5 ± 1.6 (SD) m (range = 1.2–6.6 m) and mean diameter at breast height (DBH) of cavity trees was 37.8 ± 4.7 cm (range = 32.2–47.5 cm). In contrast to the population in western North America, Barrow's Goldeneyes in eastern North America appear to rely on the availability of natural cavities formed in large, decaying trees for nesting. Current forestry regulations in Québec do not promote the retention of either large trees or older forests, reducing the availability of potential nest cavities for Barrow's Goldeneyes and likely threatening their long-term conservation. Therefore, we recommend that guidelines be developed to promote silvicultural practices aimed at preserving the long-term availability of large (DBH ≥ 30 cm) decaying trees across the breeding range of Barrow's Goldeneyes.

Format EndNote

Vous pouvez importer cette référence dans EndNote.

Format BibTeX-CSV

Vous pouvez importer cette référence en format BibTeX-CSV.

Format BibTeX

Vous pouvez copier l'entrée BibTeX de cette référence ci-bas, ou l'importer directement dans un logiciel tel que JabRef .

@ARTICLE { RobertVaillancourtDrapeau2010,
    AUTHOR = { Robert, M. and Vaillancourt, M.-A. and Drapeau, P. },
    TITLE = { Characteristics of nest cavities of Barrow's Goldeneyes in eastern Canada },
    JOURNAL = { Journal of Field Ornithology },
    YEAR = { 2010 },
    VOLUME = { 81 },
    PAGES = { 287-293 },
    NUMBER = { 3 },
    ABSTRACT = { Barrow's Goldeneyes (Bucephala islandica) are secondary cavity nesters found in western North America and, to a lesser extent, in eastern North America. The eastern North American population is concentrated in the province of Québec and totals about 2000 pairs. Characteristics of nest cavities used by Barrow's Goldeneyes have been described in western North America, but no nest cavities have been found in eastern North America. From 2004 to 2008, we searched for nest cavities in the species’ core breeding area in the boreal forests north of the St. Lawrence River. We captured 12 adult females on their breeding grounds and fitted them with transmitters, but none apparently nested so we conducted ground searches in areas near lakes where paired birds were observed. We found 11 cavities, with 10 in dead, decaying trees and one in the dead part of a dying tree. Nine cavities were in white birch (Betula papyrifera) trees. Mean cavity height was 3.5 ± 1.6 (SD) m (range = 1.2–6.6 m) and mean diameter at breast height (DBH) of cavity trees was 37.8 ± 4.7 cm (range = 32.2–47.5 cm). In contrast to the population in western North America, Barrow's Goldeneyes in eastern North America appear to rely on the availability of natural cavities formed in large, decaying trees for nesting. Current forestry regulations in Québec do not promote the retention of either large trees or older forests, reducing the availability of potential nest cavities for Barrow's Goldeneyes and likely threatening their long-term conservation. Therefore, we recommend that guidelines be developed to promote silvicultural practices aimed at preserving the long-term availability of large (DBH ≥ 30 cm) decaying trees across the breeding range of Barrow's Goldeneyes. },
    ISSN = { 1557-9263 },
    KEYWORDS = { backpack harness, Bucephala islandica, commercial forest exploitation, prong-and-suture, radio-telemetry, snags },
    OWNER = { Luc },
    PUBLISHER = { Blackwell Publishing Inc },
    TIMESTAMP = { 2010.09.30 },
    URL = { http://dx.doi.org/10.1111/j.1557-9263.2010.00284.x },
}

********************************************************** ***************** Facebook Twitter *********************** **********************************************************

Abonnez-vous à
l'Infolettre du CEF!

********************************************************** ***************** Pub - Mycorhizes_2019 ****************** **********************************************************

********************************************************** ***************** Pub - Symphonies_Boreales ****************** **********************************************************

********************************************************** ***************** Boîte à trucs *************** **********************************************************

CEF-Référence
La référence vedette !

Jérémie Alluard (2016) Les statistiques au moments de la rédaction 

  • Ce document a pour but de guider les étudiants à intégrer de manière appropriée une analyse statistique dans leur rapport de recherche.

Voir les autres...