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Documents disponibles écrits par cet auteur (9)
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Article
Crinan Jarrett, Auteur ; Chima J. Nwaogu, Auteur ; Christian N. Tchana, Auteur ; Michelle F. M. Kamkeng, Auteur ; Alma L. S. Quiñones, Auteur ; Monica C. Olguin-Villa, Auteur ; Barbara Helm, Auteur ; Luke L. Powell, Auteur ; Andreanna J. Welch, AuteurMoult is an essential part of birds' annual cycle, and requires sufficient intake of energy and nutrients, but we understand little about how such nutritional requirements are met by wild birds. Using faecal metabarcoding, we analysed the diet o[...]
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Cody M. Kent, Auteur ; Kyu Min Huh, Auteur ; Sarah Chieko Hunter, Auteur ; Kathryn Judson, Auteur ; Luke L. Powell, Auteur ; Thomas W. Sherry, AuteurAlthough both interspecific competition and coexistence mechanisms are central to ecological and evolutionary theory, past empirical studies have generally focused on simple (two-species) communities over short time periods. Experimental tests o[...]
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Crinan Jarrett, Auteur ; Luke L. Powell, Auteur ; Tabe T. Regine Claire, Auteur ; Melanie Tchoumbou, Auteur ; Barbara Helm, AuteurWood Warblers, an Afro-Palearctic migrant species, are declining steadily in Europe likely due to mortality outside their breeding grounds. However, little is known about their overwintering, and records about the sensitive life-cycle stage of m[...]
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Luke L. Powell, Auteur ; Kelsy L. Jones, Auteur ; Jonathan H. Carpenter, Auteur ; Thomas N. Tully, AuteurABSTRACT Wild Amazonian parrots likely consume soil to supplement sodium-deficient diets. However, it remains uncertain whether parrots can detect sodium at the concentrations found in mineral licks. During 3?8 day trials, we presented 20 captiv[...]
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Karen M. Leavelle, Auteur ; Luke L. Powell, Auteur ; George V. N. Powell, Auteur ; Adrian Forsyth, AuteurABSTRACT The Yellow-billed Cotinga (Carpodectes antoniae) is one of Central America?s rarest and most endangered species. A regional endemic to Panama and Costa Rica, between 250 and 999 individuals appear to now survive mainly within Pacific co[...]
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Luke L. Powell, Auteur ; Norbert J. Cordeiro, Auteur ; Jeffrey A. Stratford, AuteurAvian insectivores of the tropical rainforest understory ("understory insectivores") are common, diverse, and often sensitive to disturbance of tropical forest, making them useful as sentinels of rainforest ecosystem change. At the 2013 joint Am[...]
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Luke L. Powell, Auteur ; Jared D. Wolfe, Auteur ; Erik I. Johnson, Auteur ; Philip C. Stouffer, AuteurUnderstanding how animals move in a complex habitat mosaic is critical to biodiversity conservation as deforested lands and secondary rainforests accumulate in landscapes previously dominated by primary forests. To visualize the spatiotemporal d[...]
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Luke L. Powell, Auteur ; Robert C. Dobbs, Auteur ; Peter P. Marra, AuteurInsectivorous birds may adjust their foraging strategies to exploit changes in resource distributions. Arthropod prey strongly influence habitat-specific persistence of long-distance migrant passerines in their wintering areas, and arthropods ar[...]
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Luke L. Powell, Auteur ; Jared D. Wolfe, Auteur ; Erik I. Johnson, Auteur ; James E. Hines, Auteur ; James D. Nichols, Auteur ; Philip C. Stouffer, AuteurGiven rates of deforestation, disturbance, and secondary forest accumulation in tropical rainforests, there is a great need to quantify habitat use and movement among different habitats. This need is particularly pronounced for animals most sens[...]
