Results 11 to 20 of about 2,314,115 (247)
Estimating gopher tortoise abundance through design-based and model-based methods [PDF]
, 2010 Gopher tortoises are a small land tortoise that inhabit south-eastern United States and are listed as threatened due to habitat loss. They are rather hard to survey, since they occur at low density.
Bal, Payal
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Estimating abundance of rare, small mammals: A case study of the Key Largo woodrat (Neotoma floridana smalli) [PDF]
, 2011 Estimates of animal abundance or density are fundamental quantities in ecology and conservation, but for many species such as rare, small mammals, obtaining robust estimates is problematic.
Potts, Joanne M.
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Abundance estimation and Conservation Biology
Animal Biodiversity and Conservation, 2007 Abundance is the state variable of interest in most population–level ecological research and in most programs involving management and conservation of animal populations.
J. D. Nichols, D. I. MacKenzie
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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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Estimating ungulate abundance while accounting for multiple sources of observation error
Wildlife Society Bulletin, 2016 Whether a species is rare or overabundant, accurate estimates of population abundance are essential for the development and assessment of conservation plans and management goals.
Pat A. Terletzky, David N. Koons
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The effects of acoustic misclassification on cetacean species abundance estimation [PDF]
, 2013 This work was funded through the Natural Environment Research Council and SMRU Ltd.To estimate the density or abundance of a cetacean species using acoustic detection data, it is necessary to correctly identify the species that are detected.
Caillat, Marjolaine Annie +5 more
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Avian Conservation and Ecology, 2018 Computer-automated image analysis techniques can save time and resources for detecting and counting birds in aerial imagery. Sophisticated object-based image analysis (OBIA) software is now widely available and has proven effective for various ...
Dominique Chabot +2 more
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Evolutionary Applications, 2023 Estimating the demographic parameters of contemporary populations is essential to the success of elasmobranch conservation programmes, and to understanding their recent evolutionary history. For benthic elasmobranchs such as skates, traditional fisheries‐
Aurélien Delaval +6 more
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Attenuation of species abundance distributions by sampling [PDF]
, 2015 Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an important challenge to answer scientific and resource management questions.
Shimadzu, Hideyasu +3 more
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Sensors, 2021 Aerial thermal infrared (TIR) surveys are an attractive option for estimating abundances of large mammals inhabiting extensive and heterogeneous terrain. Compared to standard helicopter or fixed-wing aerial surveys, TIR flights can be conducted at higher
Jacob D. Hennig +4 more
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