Results 41 to 50 of about 501,741 (157)
Efficient data collection for camera trap‐based density estimation: A preliminary assessment
Ecological Solutions and EvidenceCamera traps have great potential for generating wildlife insights by providing high resolution site‐specific data. Methods of data collection and analysis reliant on these tools for population density estimation can be relatively resource intensive ...
Bálint Ternyik +3 more
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Sample complexity of learning Mahalanobis distance metrics
CoRR, 2015 Metric learning seeks a transformation of the feature space that enhances prediction quality for the given task at hand. In this work we provide PAC-style sample complexity rates for supervised metric learning. We give matching lower- and upper-bounds showing that the sample complexity scales with the representation dimension when no assumptions are ...
Nakul Verma, Kristin Branson
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Methods in Ecology and EvolutionKnowledge of variation in population processes (e.g. population growth) across broad spatiotemporal scales is fundamental to population ecology and critical for conservation decision‐making. Count data from rigorous surveys (e.g.
Qing Zhao +6 more
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OryxEstimating the population size of shy and elusive species is challenging but necessary to inform appropriate conservation actions for threatened or declining species. Using camera-trap surveys conducted during 2017–2021, we estimated and compared African
Candice B. Lewis +3 more
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Particle swarm optimization algorithm for parameter estimation in Gamma-Poisson distribution model of k-tree distance [PDF]
Computational Ecology and Software, 2015 Distance sampling is a flexible and efficient inventory technique in forestry and ecology, especially in highly dense plant communities, and in difficult terrain. Point-to-tree distance or tree-to-tree distance was used to estimate characteristics of the
Feixia Lu, Dingyuan Mo, Meng Gao
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Zoologia (Curitiba), 2016 Accurate estimates of group sizes through line transect sampling methods are important to correctly ascertain the abundance of animals that occur in groups.
Guilherme A. Bortolotto +3 more
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DiversityTransect surveys and distance sampling are widely used to estimate wildlife population densities, but these methods can be biased when animals aggregate near features such as waterholes or other resources that occur along survey routes.
Erika P. Swenson +3 more
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Ecosphere, 2016 Robust models of wildlife population size, spatial distribution, and habitat relationships are needed to more effectively monitor endangered species and prioritize habitat conservation efforts. Remotely sensed data such as airborne laser altimetry (LiDAR)
Steven E. Sesnie +5 more
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Environment and Natural Resources JournalHornbills belong to the Bucerotidae Family, and almost all species within this family are vulnerable to extinction. This study examined the population density of four hornbill species in the eastern part of the rainforest of the Huai Kha Khaeng Wildlife ...
Thanapong Fueakong +7 more
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AvocettaThe wintering period represents a critical stage for avian survival and population dynamics. However, systematic monitoring during this phase remains scarce compared to the extensive research dedicated to the reproductive period and migration. To address
Diego Rastelli +2 more
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