Results 11 to 20 of about 1,881,033 (281)
Summary We consider the method of distance sampling described by Buckland, Anderson, Burnham and Laake in 1993. We explore the properties of the methodology in simple cases chosen to allow direct and accessible comparisons of distance sampling in the design- and model-based frameworks.
Barry, Simon C, Welsh, Alan
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Distance sampling with camera traps [PDF]
SummaryReliable estimates of animal density and abundance are essential for effective wildlife conservation and management. Camera trapping has proven efficient for sampling multiple species, but statistical estimators of density from camera trapping data for species that cannot be individually identified are still in development.We extend point ...
Eric J. Howe +3 more
exaly +7 more sources
SAMPLING VARIANCES OF HETEROZYGOSITY AND GENETIC DISTANCE [PDF]
ABSTRACT Mathematical formulae for the sampling variances of average heterozygosity and Nei's genetic distance are developed. These sampling variances are decomposed into their two components, i.e. the inter-locus and intra-locus variances. The relationship between the number of loci and the number of individuals per locus to be examined
M, Nei, A K, Roychoudhury
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Distance sampling is widely used to estimate animal population densities by accounting for imperfect detection of individuals with increasing distance from an observer.
Daniel A. Yip +7 more
doaj +2 more sources
Over the last 20 years, ecological restoration of degraded habitats has become common in conservation practice. Mountain hares (Lepus timidus scoticus) were surveyed during 2017–2021 using 830 km of line transects in the Peak District National Park ...
Carlos P. E. Bedson +6 more
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A method for estimating songbird abundance with drones
Using drones to conduct airborne bioacoustics surveys is a potentially useful new way to estimate the abundance of vocal bird species. Here we show that by using two audio recorders suspended from a quadcopter drone it is possible to estimate distances ...
Andrew M. Wilson +5 more
doaj +1 more source
Long‐term monitoring of wildlife populations for protected area management in Southeast Asia
Long‐term monitoring of biodiversity in protected areas (PAs) is critical to assess threats, link conservation action to species outcomes, and facilitate improved management. Yet, rigorous longitudinal monitoring within PAs is rare.
Matthew N. Nuttall +8 more
doaj +1 more source
Assessment and novel application of N‐mixture models for aerial surveys of wildlife
Aerial surveys are a critical tool for inference of wildlife populations, yet are limited by current available methods to account for imperfect detection without marking animals.
Sonja A. Christensen +2 more
doaj +1 more source
Greedy $k$-Center From Noisy Distance Samples [PDF]
We study a variant of the canonical k-center problem over a set of vertices in a metric space, where the underlying distances are apriori unknown. Instead, we can query an oracle which provides noisy/incomplete estimates of the distance between any pair of vertices.
Neharika Jali +2 more
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Depth of Edge Influence in a Madagascar Lowland Rainforest and Its Effects on Lemurs’ Abundance
Edge effects result from interactions between adjacent habitats, which can modify abiotic and biotic conditions and produce various negative effects on biodiversity.
Marco Campera +8 more
doaj +1 more source

