Results 221 to 230 of about 25,622 (250)
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Green turtles nest survival: Quantifying the hidden predation
Marine Environmental Research, 2022Trindade Island is the largest nesting site for green turtles Chelonia mydas in Brazil and one of the most important in the Atlantic ocean. The terrestrial crab Johngarthia lagostoma forages almost everywhere on the island, including the green turtle nesting beaches. Nothing is known about crab predation on sea turtle eggs at the time of nesting.
Luan Amaral Pinheiro de Faria +2 more
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Ostrich, 2018
Identifying the ecological factors shaping bird nest survival is essential for understanding bird population dynamics, as well as for conservation purposes. Using data obtained by monitoring natural bird nests in one oasis in south-eastern Tunisia, we fitted logistic exposure models to investigate the effects of nesting microhabitat, nest position and ...
Boukhriss, Jihen, Selmi, Slaheddine
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Identifying the ecological factors shaping bird nest survival is essential for understanding bird population dynamics, as well as for conservation purposes. Using data obtained by monitoring natural bird nests in one oasis in south-eastern Tunisia, we fitted logistic exposure models to investigate the effects of nesting microhabitat, nest position and ...
Boukhriss, Jihen, Selmi, Slaheddine
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NEST-SITE SELECTION AND NEST SURVIVAL OF NORTHERN BOBWHITE IN SOUTHERN TEXAS
The Wilson Journal of Ornithology, 2007Abstract We examined abiotic and biotic variables potentially associated with Northern Bobwhite (Colinus virginianus) nest-site selection and nest success in southern Texas, USA during 2002–2005. These data were used to characterize bobwhite nest-site selection, and to develop and evaluate models of daily nest survival in Program MARK.
MICHAEL J. RADER +4 more
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Early nest initiation and vegetation density enhance nest survival in Wild Turkeys
Ornithology, 2022Abstract The theory of adaptive habitat selection suggests resource selection by animals should reflect underlying quality, such that individual selection confers an adaptive advantage via increased fitness. Using resource selection functions and nest survival models, we demonstrated that visual obstruction at the nest site was ...
Allison C Keever +3 more
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Adaptive nest clustering and density‐dependent nest survival in dabbling ducks
Oikos, 2013Density‐dependent population regulation is observed in many taxa, and understanding the mechanisms that generate density dependence is especially important for the conservation of heavily‐managed species. In one such system, North American waterfowl, density dependence is often observed at continental scales, and nest predation has long been implicated
Kevin M. Ringelman +2 more
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Personality and density affect nest defence and nest survival in the great tit
acta ethologica, 2014Recent studies suggest that individual variation in behaviour of prey individuals may cause distinctive responses to nest predators and cooperation with conspecifics. We assessed individual differences during a novel object test and whether these responses were related to nest failure and survival of females during incubation.
Vrublevska, J +5 more
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Estimating occupancy and nest survival of cliff‐nesting raptors in an open population framework
Ecological ApplicationsAbstractNest survival is a key demographic parameter for assessing the viability of bird populations and is frequently responsive to management. While nest survival is often monitored alone, its joint monitoring with abundance permits a more thorough understanding of breeding productivity and the mechanisms of population change.
Jeremy D. Mizel, Melanie J. Flamme
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Waterbird Nest Density and Nest Survival in Rice Fields of Southwestern Louisiana
Waterbirds, 2010Abstract. Rice fields in southwestern Louisiana provide breeding habitat for several waterbird species; however, little is known about nest density, nest survival and the importance of landscape context of rice fields in determining breeding activity. In 2004, 42 rice fields were searched for nests, and 40 were searched in 2005.
Sergio Pierluissi +2 more
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Nest predators, but not nest survival, differ between adjacent urban habitats
Urban Ecosystems, 2018Growing human populations make it imperative for ecologists to identify strategies to conserve biodiversity in human-dominated landscapes, such as cities. Effects of urbanization on birds are particularly well-studied, but questions remain regarding the best conservation approaches.
J. S. Malpass +3 more
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Effects of Adult Behavior and Nest-Site Characteristics on Black-capped Vireo Nest Survival
The Condor, 2013Abstract. Predation is the leading cause of nest failure for many bird species. Most studies associate risk of predation with vegetation characteristics of the nest site. Alternatively, the Skutch hypothesis suggests that adults' activity at the nest can attract the attention of predators and lead to an increased risk of predation.
Pope, TL +5 more
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