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Total biomass estimation of large fishes is affected by underwater visual census method

Marine Ecology Progress Series
Differences amongst diver-based underwater visual census (UVC) methods may influence how fish assemblages are described and interpreted ecologically. Here we compared 2 common UVC protocols across 32 tropical and 10 temperate reef sites spanning Australia to assess observational biases associated with diver counts.
Tyson R Jones   +5 more
openaire   +1 more source

Optimisation of underwater visual census and controlled angling methods for monitoring subtidal temperate reef fish communities

African Journal of Marine Science, 2009
Standardised sampling protocols for monitoring fish stocks are essential to assess changes in stock status and provide a means to evaluate the effectiveness of fisheries management measures, such as marine protected areas (MPAs). This study aimed to optimise two standard sampling methods, namely underwater visual census (UVC) and controlled angling ...
Bennett, RH   +4 more
openaire   +2 more sources

Observer bias and detection probability in underwater visual census of fish assemblages measured with independent double-observers

Journal of Experimental Marine Biology and Ecology, 2013
Abstract Underwater visual census (UVC) is one of the more frequently used methods for monitoring of subtidal fish communities. However, population estimates from UVC are plagued by numerous biases that ultimately reduce the diagnostic power of the data.
A.T.F. Bernard   +3 more
openaire   +1 more source

Biases associated with the use of underwater visual census techniques to quantify the density and size-structure of fish populations

Journal of Experimental Marine Biology and Ecology, 2004
Abstract Estimates of reef fish densities made by divers visually censusing 5 m wide strip transects were compared with capture–resight estimates calculated independently using data on the resighting frequencies of fish marked with colour-coded tags.
Graham J. Edgar   +2 more
openaire   +1 more source

Assessing range shifts of tropical reef fishes: a comparison of belt transect and roaming underwater visual census methods

Bulletin of Marine Science, 2014
Accurate, precise, and efficient underwater visual censuses (UVc) are vital for detecting and monitoring range shifts of reef fishes. The present study compared the utility of time-equivalent belt transects and Global Positioning system (GPs)-tracked roaming surveys for assessing populations of range-expanding tropical fishes off southeastern Australia.
Hayden J Beck   +3 more
openaire   +1 more source

UNDERWATER VISUAL CENSUS AS A RELEVANT METHOD FOR FISH MONITORING

2023
Holubová, Michaela   +3 more
openaire   +1 more source

Comparison of Underwater Visual Census (UVC), Underwater Remote Video (RUV), and Handline Used by Fisheries-Independent Programs to Assess Reef Fish

Caribbean Journal of Science, 2022
Leysa A. López-González   +4 more
openaire   +1 more source

A comparison of underwater visual census, baited, diver operated and remotely operated stereo-video for sampling shallow water reef fishes

Estuarine, Coastal and Shelf Science, 2022
Euan Harvey   +2 more
exaly  

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