Results 21 to 30 of about 13,110,839 (301)
Frontiers in Marine Science, 2022 The harbor porpoise (Phocoena phocoena) is common in temperate waters of the eastern North Pacific Ocean, including Southeast Alaska inland waters, a complex environment comprised of open waterways, narrow channels, and inlets.
Alexandre N. Zerbini +6 more
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Ecology and Evolution, 2022 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
Drone Systems and Applications, 2022 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
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Long‐term monitoring of wildlife populations for protected area management in Southeast Asia
Conservation Science and Practice, 2022 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
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Distance sampling with camera traps [PDF]
Methods in Ecology and Evolution, 2017 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 ...
E. Howe +3 more
semanticscholar +6 more sources
Assessment and novel application of N‐mixture models for aerial surveys of wildlife
Ecosphere, 2021 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]
IEEE Transactions on Signal and Information Processing over Networks, 2021 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
openaire +2 more sources
Depth of Edge Influence in a Madagascar Lowland Rainforest and Its Effects on Lemurs’ Abundance
Land, 2022 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
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Sample Out-of-Sample Inference Based on Wasserstein Distance [PDF]
Operations Research, 2021 Financial institutions make decisions according to a model of uncertainty. At the same time, regulators often evaluate the risk exposure of these institutions using a model of uncertainty, which is often different from the one used by the institutions. How can one incorporate both views into a single framework? This paper provides such a framework. It
Jose Blanchet, Yang Kang
openaire +3 more sources
Land, 2022 Appropriate field survey methods and robust modeling approaches play an important role in wildlife protection and habitat management because reliable information on wildlife distribution and abundance is important for conservation planning and actions ...
Xinhai Li +4 more
doaj +1 more source