Results 21 to 30 of about 3,606 (149)

Subterranean systems provide a suitable overwintering habitat for Salamandra salamandra

open access: yesInternational 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

Open population maximum likelihood spatial capture-recapture [PDF]

open access: yes, 2019
Funding: Part-funded by UK EPSRC grant EP/K041061/1 (DB); Richard Glennie was funded by the Carnegie Trust.Open population capture‐recapture models are widely used to estimate population demographics and abundance over time.
Borchers, David L.   +4 more
core   +1 more source

No detection of chytrid in first systematic screening of Bombina variegata pachypus (Anura: Bombinatoridae) in Liguria, northern Italy [PDF]

open access: yes, 2013
The Apennine Yellow-bellied toad Bombina variegata pachypus, a small anuran endemic to peninsular Italy, has been declining throughout its range over the last 30 years.
Canessa, Stefano   +2 more
core   +2 more sources

Estudio crítico del modelo de Manly-Parr

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2009
Manly and Parr in 1968 obtain a model which give an estimation of the parameters of an animal population. The model presents some weakness on the specifications of the class of individual in the population.
Jorge Poltronieri Vargas
doaj   +1 more source

Full Open Population Capture-Recapture Models with Individual Covariates [PDF]

open access: yes, 2010
Traditional analyses of capture-recapture data are based on likelihood functions that explicitly integrate out all missing data. We use a complete data likelihood (CDL) to show how a wide range of capture-recapture models can be easily fitted using ...
Barker, Richard J.   +1 more
core   +1 more source

VARIACIÓN DEMOGRÁFICA TEMPORAL DE LA TORTUGA DE RÍO CHOCOANA, Rhinoclemmys nasuta (GEOEMYDIDAE), EN ISLA PALMA, BAHÍA MÁLAGA, PACÍFICO DEL VALLE DEL CAUCA

open access: yesActa Biológica Colombiana, 2014
Pocos estudios demográficos de larga duración han sido realizados en tortugas dulceacuícolas de Suramérica, pese a la necesidad de este tipo de investigación para esclarecer las variaciones naturales y fortalecer procesos de conservación en este grupo ...
Mario Fernando Gárces Restrepo   +2 more
doaj   +1 more source

Designing screening protocols for amphibian disease that account for imperfect and variable capture rates of individuals [PDF]

open access: yes, 2014
The amphibian chytrid fungus, Batrachochytrium dendrobatidis, is one of the main factors in global amphibian decline. Accurate knowledge of its presence and prevalence in an area is needed to trigger conservation actions. However, imperfect capture rates
Canessa, Stefano   +2 more
core   +2 more sources

Continuous time-dependent Individual covariates and the Cormack-Jolly-Seber model [PDF]

open access: yesAnimal Biodiversity and Conservation, 2004
The Cormack-Jolly-Seber model provides the basic framework for analyzing the survival of animals in open populations using capture-recapture data. Extensions of this model have already been developed that allow the survival and capture probabilities to ...
Bonner, S. J., Schwarz, C. J.
doaj  

Demography and Population Dynamics of the Lacertid Lizard Podarcis Bocagei in North-West Spain [PDF]

open access: yes, 1999
[Abstract] The demography and life-history traits of a population of the lacertid lizard Podarcis bocagei in north-west Spain were investigated. Most of the conclusions presented are based on mark-recapture studies carried out over a 2-year period ...
Galán, Pedro
core   +2 more sources

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

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