Results 11 to 20 of about 2,244 (163)

Methodological advances [PDF]

open access: yesAnimal Biodiversity and Conservation, 2004
The study of population dynamics has long depended on methodological progress. Among many striking examples, continuous time models for populations structured in age (Sharpe & Lotka, 1911) were made possible by progress in the mathematics of integral ...
Lebreton, J.-D., Pollock, K. H.
doaj   +3 more sources

Apparent Survival of Territorial Golden Eagles Using Non-Invasive Genetic Profiling. [PDF]

open access: yesEcol Evol
In a novel study for the species, DNA was extracted from moulted feathers over 4 years involving 21% of the Scottish population of territorial golden eagles, and individuals' genetic profiles were analysed for apparent survival rates. Results showed sexual differences but not between two sub‐populations; very few cases of breeding dispersal were ...
Whitfield DP   +4 more
europepmc   +2 more sources

Similar Survival Rates of Territorial and Sneaker Males in a Polymorphic Damselfly: A Multi-Year Study. [PDF]

open access: yesEcol Evol
Male Mnais damselflies occur in two genetically controlled morphs: an orange‐winged territorial morph that defends oviposition sites and actively courts females and a co‐occurring clear‐winged sneaker morph that does not defend territories or display, yet mates opportunistically with females.
Tsubaki Y   +4 more
europepmc   +2 more sources

Weather Extremes in the Mediterranean Winter Are Associated With Reduced Apparent Survival and Delayed Initiation of Egg-Laying in a Migratory Raptor. [PDF]

open access: yesEcol Evol
We analysed capture‐recapture data of breeding Eurasian kestrels (Falco tinnunculus) in western Finland during 1985–2018 to study how environmental conditions in their boreal breeding areas and Mediterranean wintering areas affect adult survival rate and timing of laying.
Kujala I   +3 more
europepmc   +2 more sources

Providing evidence for the conservation of a rare forest butterfly: Results from a three-year capture-mark-recapture study

open access: yesBasic and Applied Ecology, 2023
Species living in spatially structured populations require a network of interconnected habitat patches. Due to changes in forest management, this network of habitat patches has been lost for insect species inhabiting open spots within forests. We studied
Heiko Hinneberg   +2 more
doaj   +1 more source

Identifying the demographic pathways linking environmental covariates to population dynamics in an avian migrant. [PDF]

open access: yesEcol Appl
Abstract Understanding and predicting the effects of climate change on populations requires linking the environmental conditions to demographic rates and the demographic rates to population‐level consequences, but often this complete demographic pathway is not studied.
Martin EC   +4 more
europepmc   +2 more sources

Climate Change and the Spatiotemporal Variation in Survival of a Long-Distance Migrant (White Stork, Ciconia ciconia) across Western Europe

open access: yesBirds, 2021
The spatial variation in the strength of climate change may lead to different impacts on migratory birds using different breeding areas across a region.
Beatriz Martín   +2 more
doaj   +1 more source

Continuous time–dependent individual covariates and the Cormack–Jolly–Seber model

open access: yesAnimal Biodiversity and Conservation, 2007
Covariantes continuas individuales dependientes del tiempo y el modelo de Cormack-Jolly-Seber El modelo de Cormack–Jolly–Seber proporciona el marco básico para analizar la supervivencia de animales en poblaciones abiertas utilizando datos de captura ...
S. J. Bonner, C. J. Schwarz
doaj   +3 more sources

Extreme polygyny results in intersex differences in age-dependent survival of a highly dimorphic marine mammal

open access: yesRoyal Society Open Science, 2023
Developmental differences in vital rates are especially profound in polygamous mating systems. Southern elephant seals (Mirounga leonina) are highly dimorphic and extremely polygynous marine mammals.
Sophia Volzke   +5 more
doaj   +1 more source

The Influence of Mark-Recapture Sampling Effort on Estimates of Rock Lobster Survival. [PDF]

open access: yesPLoS ONE, 2016
Five annual capture-mark-recapture surveys on Jasus edwardsii were used to evaluate the effect of sample size and fishing effort on the precision of estimated survival probability. Datasets of different numbers of individual lobsters (ranging from 200 to
Ziya Kordjazi   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy