Cameras or Divers? How Baited Remote Underwater Videos and 'Long Swims' Underwater Visual Census Complement Each Other on Coral Reefs. [PDF]
Ecol EvolThis study compares baited remote underwater videos (BRUV) and a rapid timed long swim (LS) UVC method to evaluate their ability in assessing relative abundance and diversity of large predatory reef fish from nine selected families. BRUVs were more effective in detecting mobile and bait‐attracted taxa such as Carangidae and recorded up to 28 unique ...
Osuka-Edeye K +5 more
europepmc +2 more sources
Environmental and Protection Effects of Shark-Companion Associations Across Three Ocean Basins. [PDF]
Ecol EvolCompanion species frequently associate with large marine hosts, yet the ecological drivers of these relationships remain poorly understood. Using a global dataset of midwater BRUVS deployments, we modelled the presence and abundance of shark‐companion associations across seven shark species and three ocean basins.
Walker JK, Meeuwig JJ, Thompson CDH.
europepmc +2 more sources
Limited Evidence for Depth Specialism in Isolated Seamount Reef Predators. [PDF]
Ecol EvolWe investigated how depth influences predatory fish assemblages on seamount reefs in the Coral Sea using remotely operated vehicle surveys across a 100 m depth gradient. Predator abundance and species richness declined significantly with depth; yet assemblage composition remained largely consistent, suggesting many taxa utilise a broad depth range ...
Cresswell BJ +7 more
europepmc +2 more sources
High overexploitation risk due to management shortfall in highly traded requiem sharks
Conservation Letters, 2023 Most of the international trade in fins (and likely meat too) is derived from requiem sharks (family Carcharhinidae), yet trade in only two of the 56 species is currently regulated.
C. Samantha Sherman +8 more
doaj +1 more source
Reconstructing historical catch trends of threatened sharks and rays based on fisher ecological knowledge. [PDF]
Conserv BiolAbstract Small‐scale fisheries often lack historical shark and ray catch information, hampering their management. We reconstructed historical catch trends and current fishing pressure by combining local ecological knowledge, satellite‐based vessel counts, and a short‐term landing‐site survey.
Leurs G +15 more
europepmc +2 more sources
Shark conservation hindered by lack of habitat protection
Global Ecology and Conservation, 2020 Many of the world’s shark populations are in decline, indicating the need for improved conservation and management. Well managed and appropriately located marine parks and marine protected areas (MPAs) have potential to enhance shark conservation by ...
Charlotte A. Birkmanis +4 more
doaj +1 more source
Unveiling the power of environmental DNA: A review of eDNA application to monitoring threatened fish in Indonesian Waters [PDF]
E3S Web of Conferences, 2023 This study examines environmental DNA (eDNA) techniques to detect and monitor threatened fish species in Indonesian waters. By analyzing 17 selected documents out of 284 papers and 310 metadata files, the study identified 30 Indonesian threatened fish ...
Kusumah Ruby Vidia +6 more
doaj +1 more source
Catch Composition, Seasonality, and Biological Aspects of Sharks Caught in the Ecuadorian Pacific
Diversity, 2022 Although sharks have a fundamental role in maintaining the balance of aquatic ecosystems, exerting a great influence on lower levels of the food chain, their populations are declining worldwide due, to a large extent, to overfishing.
Jesús Briones-Mendoza +2 more
doaj +1 more source
Frontiers in Marine Science, 2023 IntroductionThe current Isogomphodon oxyrhynchus (Daggernose Shark) population status Q7points to 99% losses in the last decade due to certain biological traits, site fidelity, and historical high representativeness as bycatch in artisanal fisheries ...
Natascha Wosnick +5 more
doaj +1 more source