Results 31 to 40 of about 13,875,303 (177)
Long‐term apparent survival of a cold‐stunned subpopulation of juvenile green turtles
Ecosphere, 2022 Understanding the effects of extreme weather on animal populations is fundamental to ecological and conservation sciences and species management. Climate change has resulted in both warm and cold temperature extremes, including an increased frequency of ...
Robert Mollenhauer +2 more
doaj +1 more source
Spatially explicit capture-recapture models for relative density. [PDF]
EcologyAbstract Spatially explicit capture–recapture (SECR) methods are used widely to estimate animal population density and related parameters. Maximum likelihood has been applied to two flavors of the SECR model—a full model that includes absolute density as a spatially varying parameter, and a model conditional on the number of detected individuals that ...
Efford MG.
europepmc +2 more sources
Urbanisation Leaves a Genetic Signature but No Detectable Demographic Effects in a Small Mammal Population [PDF]
Ecol EvolUrbanisation can alter both genetic connectivity and demographic performance of wildlife populations, but these responses may occur on different temporal scales. Using multi‐year capture‐mark‐recapture data and microsatellite analyses of Eurasian red squirrels across an urbanisation gradient in Berlin, we found subtle genetic structuring without clear ...
Drenske S +11 more
europepmc +2 more sources
Subterranean systems provide a suitable overwintering habitat for Salamandra salamandra
International Journal of Speleology, 2017 The fire salamander (Salamandra salamandra) has been repeatedly noted to occur in natural and artificial subterranean systems. Despite the obvious connection of this species with underground shelters, their level of dependence and importance to the ...
Monika Balogová +3 more
doaj +1 more source
The Jolly-Seber Model and Maximum Likelihood Estimation Revisited [PDF]
, 1984 8 pages, 1 article*The Jolly-Seber Model and Maximum Likelihood Estimation Revisited* (Kremers, Walter K.) 8 ...
Kremers, Walter K. +3 more
core +6 more sources
Journal of Avian Biology, 2023 Reliable estimates of adult survival for many shorebird species are lacking. We used Cormack–Jolly–Seber (CJS) methods to provide an estimate of apparent, or local, survival (φ) of a population of whimbrels, Numenius phaeopus, breeding in the subarctic ...
Anne N. M. A. Ausems +5 more
doaj +1 more source
Survival and movements of brown‐headed nuthatches after translocation to the Missouri Ozarks
Wildlife Society Bulletin, 2023 The brown‐headed nuthatch (Sitta pusilla) was likely extirpated from Missouri in the early 1900s as a result of habitat loss through extensive logging. Conservation partners including the Missouri Department of Conservation, United States Forest Service,
Kristen M. Heath‐Acre +5 more
doaj +1 more source
Estimating seasonal survival of migratory birds using continuous-time capture-recapture models. [PDF]
Ecol ApplAbstract Understanding the population dynamics of migratory species requires consideration of their entire annual cycle. A key requirement is the decomposition of annual survival into seasonal periods. While there is increasing evidence that migrations are the most dangerous phase of the annual cycle, temporal variation in seasonal survival and its ...
Schaub M +3 more
europepmc +2 more sources
Endangered Species Research, 2014 We evaluated whether the Indo-Pacific bottlenose dolphins around the fast-developing island of Mayotte are threatened. We used opportunistic photo-identification data and capture-mark-recapture models to estimate key demographic parameters and then ...
C Pusineri +6 more
doaj +1 more source
A decade of humpback whale abundance estimates at Bermuda, an oceanic migratory stopover site
Frontiers in Marine Science, 2023 We constructed annual abundance of a migratory baleen whale at an oceanic stopover site to elucidate temporal changes in Bermuda, an area with increasing anthropogenic activity.
Thomas Grove +4 more
doaj +1 more source