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Documents disponibles écrits par cet auteur (11)
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Article
Heather E. Levy, Auteur ; Robert J. Cooper, Auteur ; James A. Cox, AuteurThe Red-cockaded Woodpecker (Dryobates borealis) was once common in longleaf pine (Pinus palustris) forests of the southeastern United States and played an important role through its excavation of long-lasting cavities in living pine trees. The [...]
Article
Michael J. Conroy, Auteur ; Michael C. Runge, Auteur ; James D. Nichols, Auteur ; Kirk W. Stodola, Auteur ; Robert J. Cooper, AuteurThe broad physical and biological principles behind climate change and its potential large scale ecological impacts on biota are fairly well understood, although likely responses of biotic communities at fine spati-temporal scales are not, limit[...]
Article
Brady J. Mattsson, Auteur ; J. Michael Meyers, Auteur ; Robert J. Cooper, AuteurThe Louisiana Waterthrush (waterthrush; Seiurus motacilla) is a forest-dwelling, Nearctic-Neotropical migratory passerine that nests along streams. We attached radiotransmitters (0.6-0.8 g) to 12 nestling waterthrushes using snug, elastic loops.[...]
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Michael J. Conroy, Auteur ; Kirk W. Stodola, Auteur ; Robert J. Cooper, AuteurEffective integration of information in conservation decision making requires explicit consideration of conservation goals and objectives, specification of a range of potential actions, and the willingness to use information to assist in making [...]
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Andrew K. Davis, Auteur ; Nora E. Diggs, Auteur ; Robert J. Cooper, Auteur ; Peter P. Marra, AuteurRadio-telemetry is often used to track birds, and several investigators have examined the possible effects of radio-transmitters on birds. One approach to this question is to determine if transmitters induce physiological stress. Using hematolog[...]
Article
Clark D. Jones, Auteur ; James A. Cox, Auteur ; Emily Toriani-Moura, Auteur ; Robert J. Cooper, Auteur
Article
Scott A. Rush, Auteur ; Robert J. Cooper, Auteur ; Mark S. Woodrey, AuteurEstimates of nest survival rate are often based on the assumption that the rate is constant during the nest cycle. Because violating this assumption can generate biased estimates, determining the age of a nest is important. For precocial marsh b[...]
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Scott A. Rush, Auteur ; Tom Maddox, Auteur ; Aaron T. Fisk, Auteur ; Mark S. Woodrey, Auteur ; Robert J. Cooper, AuteurRelationships between egg volume and an array of life-history traits have been identified for many bird species. Despite the importance of egg volume and the need for precise and accurate measurements, egg volume is usually estimated using a mat[...]
Article
Kirk W. Stodola, Auteur ; Eric T. Linder, Auteur ; David A. Buehler, Auteur ; Kathleen E. Franzreb, Auteur ; Daniel H. Kim, Auteur ; Robert J. Cooper, AuteurBiparental care is common in birds, with the allocation of effort being highly variable between the sexes. In most songbird species, the female typically provides the most care early in the breeding cycle with both parents providing care when pr[...]
Article
Nathan A. Klaus, Auteur ; Scott A. Rush, Auteur ; Tim S. Keyes, Auteur ; John Petrick, Auteur ; Robert J. Cooper, Auteur
Article
Scott A. Rush, Auteur ; Jill A. Olin, Auteur ; Aaron T. Fisk, Auteur ; Mark S. Woodrey, Auteur ; Robert J. Cooper, AuteurMuch of North America's tidal marsh habitat has been significantly altered by both natural and man-made processes. Thus, there is a need to understand the trophic ecology of organisms endemic to these ecosystems. We applied carbon (delta (13)C) [...]
