La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Quantifying avian habitat use in forests using track-plates
Auteurs :	K. A. Mooney, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (73(4) FAL 2002)
Article en page(s) :	392-398
Langues:	Anglais
Résumé :	I constructed track-plates resembling short pine branches and attached them to pairs of neighboring pine trees distributed over a 1000-ha area in the Colorado Front Range. I checked track-plates after four and eight days between 24-31 August 2000 and scored each for the presence or absence of tracks. Half of all track plates were marked within four days. I found a positive correlation between scores of paired trees, indicating that track-plating accurately reflected the relative abundance of birds among habitat patches, A power analysis showed that to test for a 15% difference in bird visitation among habitats with a power of 0.75 required a sample size of 25 trees.

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