Results 51 to 60 of about 28,659 (266)

Integrating high‐speed videos in capture‐mark‐recapture studies of insects

open access: yesEcology and Evolution, 2021
Capture–mark–recapture (CMR) studies have been used extensively in ecology and evolution. While it is feasible to apply CMR in some animals, it is considerably more challenging in small fast‐moving species such as insects.
Rassim Khelifa   +3 more
doaj   +1 more source

A comparison of four different methods to estimate population size of Alpine marmot (Marmota marmota) [PDF]

open access: yes, 2017
Obtaining reliable information on animal abundance in mountainous landscapes is challenging. Highly heterogeneous habitats tend to reduce detection probabilities, and the three-dimensional, rugged nature of the terrain poses severe limits to the ...
Bertolini, Matteo   +4 more
core   +1 more source

Spatial capture–recapture with random thinning for unidentified encounters

open access: yesEcology and Evolution, 2021
Spatial capture–recapture (SCR) models have increasingly been used as a basis for combining capture–recapture data types with variable levels of individual identity information to estimate population density and other demographic parameters.
José Jiménez   +4 more
doaj   +1 more source

Trace-contrast models for capture-recapture without capture histories [PDF]

open access: yes, 2018
This work was funded by the Royal Society of New Zealand through Marsden Grant 14-UOA-155. Ben Stevenson was supported by EPSRC/NERC Grant EP/1000917/1.Capture-recapture studies increasingly rely upon natural tags that allow animals to be identified by ...
Borchers, D. L.   +2 more
core   +1 more source

Estimating Abundance of Siberian Roe Deer Using Fecal-DNA Capture-Mark-Recapture in Northeast China

open access: yesAnimals, 2020
It is necessary to estimate the population abundance of deer for managing their populations. However, most estimates are from high-density populations inhabiting the forests of North America or Europe; there is currently a lack of necessary knowledge ...
Yuehui Li   +5 more
doaj   +1 more source

Connecting the latent multinomial

open access: yes, 2015
Link et al. (2010) define a general framework for analyzing capture-recapture data with potential misidentifications. In this framework, the observed vector of counts, $y$, is considered as a linear function of a vector of latent counts, $x$, such that ...
Bonner, Simon J., Schofield, Matthew R.
core   +1 more source

State space and movement specification in open population spatial capture-recapture models. [PDF]

open access: yes, 2018
With continued global changes, such as climate change, biodiversity loss, and habitat fragmentation, the need for assessment of long-term population dynamics and population monitoring of threatened species is growing.
Borchers   +43 more
core   +1 more source

Spatial Capture-Recapture for Categorically Marked Populations with An Application to Genetic Capture-Recapture [PDF]

open access: yesEcosphere, 2018
AbstractRecently introduced unmarked spatial capture-recapture (SCR), spatial mark-resight (SMR), and 2-flank spatial partial identity models (SPIM) extend the domain of SCR to populations or observation systems that do not always allow for individual identity to be determined with certainty. For example, some species do not have natural marks that can
Ben C. Augustine   +5 more
openaire   +2 more sources

DNA metabarcoding reveals greater plant diversity than morphological seed analysis of bird feces

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Fruit‐eating birds drive seed dispersal in recovering tropical ecosystems, shaping forest regeneration. Molecular techniques, such as DNA metabarcoding, enable diet analysis from feces and can provide complementary frugivory data where dispersal is infrequent, as well as aid in seed identification in hyper‐diverse regions lacking ...
Carina I. Motta   +3 more
wiley   +1 more source

Integrating growth and survival models for flexible estimation of size‐dependent survival in a cryptic, endangered snake

open access: yesEcology and Evolution, 2022
Estimates of demographic rates for animal populations and individuals have many applications for ecological and conservation research. In many animals, survival is size‐dependent, but estimating the form of the size–survival relationship presents ...
Jonathan P. Rose   +4 more
doaj   +1 more source

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