Výsledky vyhledávání - "Transect Surveys"

Akademický článek

Assessment of ring-tailed lemur Lemur catta populations in south-western Madagascar

Autor: Sylvain Randrianjaka, Samantha Calkins, Timothy M. Sefczek, Cynthia L. Frasier, Richard Randriamampionona, Jean Claude Rakotoniaina, Lily-Arison R. de Roland, Andrea L. Baden, Edward E. Louis

Publikováno v: Oryx, Vol 58, Pp 164-166 (2024)

Anthropogenic activities are negatively affecting the flora and fauna of Madagascar, including its Endangered flagship lemur species, the ring-tailed lemur Lemur catta. Population numbers at some sites are rapidly declining, yet much of the species'

Externí odkaz: https://doaj.org/article/2837c2f5d7314b978ae4f895f478334c

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Akademický článek

Matching visual and acoustic events to estimate detection probability for small cetaceans in the ACCOBAMS Survey Initiative

Autor: Camille Ollier, Ilona Sinn, Oliver Boisseau, Vincent Ridoux, Auriane Virgili

Publikováno v: Frontiers in Marine Science, Vol 10 (2023)

Estimating the detection probability of small cetaceans using either visual or acoustic surveys is difficult because they do not surface or vocalise continuously and can be imperceptible to an observer or hydrophone. Animals seen at the surface may h

Externí odkaz: https://doaj.org/article/b91b2b172ec54b80b533203c085253a6

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Akademický článek

Camera-trapping estimates of the relative population density of Sympetrum dragonflies: application to multihabitat users in agricultural landscapes

Autor: Akira Yoshioka, Toshimasa Mitamura, Nobuhiro Matsuki, Akira Shimizu, Hirofumi Ouchi, Hiroyuki Oguma, Jaeick Jo, Keita Fukasawa, Nao Kumada, Shoma Jingu, Ken Tabuchi

Publikováno v: PeerJ, Vol 11, p e14881 (2023)

Although camera trapping has been effectively used for wildlife monitoring, its application to multihabitat insects (i.e., insects requiring terrestrial and aquatic ecosystems) is limited. Among such insects, perching dragonflies of the genus Sympetr

Externí odkaz: https://doaj.org/article/d31c741a1b824a648b8719663d52f763

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Akademický článek

Underwater robots provide similar fish biodiversity assessments as divers on coral reefs

Autor: Mathilde Maslin, Silvain Louis, Karen Godary Dejean, Lionel Lapierre, Sébastien Villéger, Thomas Claverie

Publikováno v: Remote Sensing in Ecology and Conservation, Vol 7, Iss 4, Pp 567-578 (2021)

Abstract Coral reefs are under increasing threat, and the loss of reef‐associated fishes providing valuable ecosystem services is accelerating. The monitoring of such rapid changes has become a challenge for ecologists and ecosystems managers using

Externí odkaz: https://doaj.org/article/6c6d3d3b7b214de1a6a56ad3d9a409d0

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