Détail de l'auteur
Documents disponibles écrits par cet auteur (4)
Ajouter le résultat dans votre panier Affiner la recherche
Article
Charlotte L. Roy, Auteur ; John H. Giudice, Auteur ; Chris Scharenbroich, AuteurReliable information about population status, trends, and the current distribution of Spruce Grouse (Falcipennis canadensis) is needed, but questions remain concerning the best method to use to conduct surveys. We evaluated two methods to survey[...]
Article
Michael C. Zicus, Auteur ; David P. Rave, Auteur ; John R. Fieberg, Auteur ; John H. Giudice, Auteur ; Robert G. Wright, AuteurDans Wildfowl (58 2008)Concerns about Ring-necked Duck Aythya collaris breeding numbers in Minnesota suggested a population survey was needed; however, knowledge of the species' distribution and abundance was poor. Existing waterfowl survey data were used to define an[...]
Article
John H. Giudice, Auteur ; Kurt J. Haroldson, AuteurEvidence that the Conservation Reserve Program (CRP) has resulted in large-scale increases in populations of grassland birds is limited. Detecting large-scale CRP effects is difficult because agricultural landscapes are complex, dynamic systems [...]
Article
John H. Giudice, Auteur ; Kurt J. Haroldson, Auteur ; Alison Harwood, Auteur ; Brock R. McMillan, AuteurThe validity of treating counts as indices to abundance is based on the assumption that the expected detection probability, E(p), is constant over time or comparison groups or, more realistically, that variation in p is small relative to variati[...]
