Results 51 to 60 of about 3,675 (193)

Drone‐based radiotelemetry and imagery systems provide an advantage over traditional techniques for estimating survival of dependent juveniles

Wildlife Society Bulletin, EarlyView.
We used drone‐based radiotelemetry and multispectral imagery to estimate detection and survival probabilities of blue‐winged teal broods in Saskatchewan, Canada. Weekly brood survival probabilities, estimated via Cormack‐Jolly‐Seber models, increased with age and were comparable between drone methods.
Grant A. Rhodes, Dylan L. Bakner, Hannah C. Sabatier, Benjamin S. Sedinger, Christopher A. Nicolai, Kevin M. Ringelman   +5 more
wiley   +1 more source

Use of capture–recapture models to evaluate abundance and dynamics of a stocked Muskellunge population

Aquaculture, Fish and Fisheries
To evaluate the success of a stocking program in Fox Lake, Minnesota, adult (≥76 cm total length) Muskellunge were captured with large nearshore trap nets and individually marked with passive integrated transponder tags during the 2011–2013 and 2015–2017
Steven M. Shroyer, Nathaniel C. Hodgins
doaj   +1 more source

Cryptic disease-induced mortality may cause host extinction in an apparently stable host- parasite system [PDF]

, 2017
The decline of wildlife populations due to emerging infectious disease often shows a common pattern: the parasite invades a naive host population, producing epidemic disease and a population decline, sometimes with extirpation.
Costas, F, Cunningham, AA, Schmidt, BR, Soto-Azat, C, Uribe-Rivera, DE, Valenzuela-Sánchez, A   +5 more
core   +1 more source

Computationally efficient Bayesian capture–mark–recapture models with transients, applied to survival of hand‐reared African Penguins

Methods in Ecology and Evolution, EarlyView.
Abstract Mark–recapture models are the primary framework for estimating demographic parameters in wild organisms. Complex life histories and sampling processes demand complex model formulations, yet these are vulnerable to errors in implementation and unanticipated biases.
Murray Christian, W. Chris Oosthuizen, Katrin Ludynia, Barbara Barham, Peter Barham, Richard B. Sherley, Res Altwegg   +6 more
wiley   +1 more source

HOME RANGE AND MICROHABITAT ASSOCIATIONS OF THE SOUTHERN RED-BACKED VOLE (MYODES GAPPERI) IN NEW HAMPSHIRE FORESTS [PDF]

, 2018
Resources, such as food and shelter, are unevenly distributed across the landscape at both macro and micro scales. Home range is one measure of space use that reflects an individual’s resource requirements (e.g., microhabitat characteristics) and ...
Tisell, Honora
core   +2 more sources

Nest Success and Hatchling Survival of American Alligators Within Inland Wetlands of East Texas [PDF]

, 2012
Because of liberalization of American alligator (Alligator mississippiensis) harvest management in Texas, estimates of nest success and hatchling survival for inland populations are essential for long-term, sustainable population and harvest management ...
Calkins, Gary, Conway, Warren C., Saalfeld, David   +2 more
core   +2 more sources

Monitoring African Megafauna in an Anthropogenic Landscape: A 15‐Year Case Study of the Vulnerable West African Giraffe

Animal Conservation, EarlyView.
We used pattern recognition software to correct misidentifications in a 15‐year photographic database of the last, vulnerable West African giraffe population in Niger. After revealing substantial methodological errors that had inflated population estimates by nearly 19%, we corrected individual encounter histories and applied capture‐mark‐recapture ...
Mara Vukelić, Ella W. White, Julian Fennessy, Abdoul Razack Moussa Zabeirou, Kateřina Gašparová, Simon Valle, Michael B. Brown, Thomas Rabeil, Karolína Brandlová   +8 more
wiley   +1 more source

Population ecology of Chaetophractus vellerosus: the first report for an armadillo in South America

Zoologia (Curitiba), 2017
The aim of this work was to obtain the first estimates of survival rates (S), capture probability (p) and life expectancy for armadillos in South America by analyzing capture-mark-recapture data obtained from a population of Chaetophractus vellerosus ...
Agustín M. Abba, Veronica V. Benitez, Santiago R. Doyle   +2 more
doaj   +1 more source

Parámetros poblacionales de la rana dorada, Phyllobates terribilis (Myers et al., 1978) (Dendrobatidae), en una localidad de Buenaventura, Valle del Cauca, Colombia

Biota Colombiana, 2018
El objetivo de este estudio fue estimar el tamaño, densidad, probabilidad de supervivencia (φ), de detección (p), y describir las condiciones del hábitat de una población de la rana dorada (Phyllobates terribilis, Dendrobatidae) en bajos del río Naya ...
Stefhania Alzate-Lozano, Rodrigo Lozano-Osorio, Carlos Galvis   +2 more
doaj   +3 more sources

A half century of monitoring reveals contrasting survival responses of Icelandic seabirds to climate and fisheries pressures

Ibis, EarlyView.
Seabirds serve as key indicators of marine environmental changes, with adult survival being a critical parameter for assessing population health. Iceland hosts some of the largest seabird populations in the North Atlantic, making it a valuable location for studying long‐term trends in seabird demographics.
Sarah E. Gutowsky, Mark L. Mallory, Gregory J. Robertson, Anna M. Calvert, David A. Fifield, Sverrir Thorstensen, Ævar Petersen   +6 more
wiley   +1 more source