Results 11 to 20 of about 873 (157)

Fish diversity associated with gas platforms: Evaluation of two underwater visual census techniques

open access: yesCiencias Marinas, 2007
Se estudiaron las comunidades ícticas asociadas con plataformas extractivas mediante dos técnicas de censos visuales submarinos: transectos y conteos de puntos móviles.
P Consoli   +4 more
doaj   +3 more sources

Comparison of Cuban coral and reef fish assemblages recorded by visual census and underwater stereo-video technique

open access: yesEcological Indicators, 2021
Visual census techniques have been used worldwide for the documentation of indicators on coral reefs condition, and its outcomes have helped to validate other techniques such as the use of video recording. Among them, those that use video are recommended
Elena de la Guardia   +6 more
doaj   +2 more sources

Preliminary Assessment of Invasive Lionfish Pterois miles Using Underwater Visual Census Method in the Northeastern Mediterranean [PDF]

open access: yesCroatian Journal of Fisheries, 2022
Underwater visual census (UVC) is a commonly used approach for assessing fish density and biomass. Iskenderun Bay, comprising the Samandağ coast in Turkey, is the most important introduction pathway of alien species in the northeastern Mediterranean.
Turan Cemal, Doğdu Servet Ahmet
doaj   +5 more sources

Marinas as habitats for nearshore fish assemblages: comparative analysis of underwater visual census, baited cameras and fish traps

open access: yesScientia Marina, 2017
Understanding the ecological role that artificial structures might play on nearshore fish assemblages requires the collection of accurate and reliable data through efficient sampling techniques.
Néstor E. Bosch   +3 more
doaj   +6 more sources

Underwater Visual Census of Deeper Vertical Rocky Reefs [PDF]

open access: yesTurkish Journal of Fisheries and Aquatic Sciences, 2020
Diver-based underwater visual census (UVC), particularly transect-based survey, is a widely used method for the study of tropical and temperate fish assemblages. However, due to logistical constraints associated with conventional SCUBA diving, deeper habitats, such as vertical rocky reefs, are rarely studied and poorly known.
Alen Soldo, Igor Glavičić
openaire   +2 more sources

Enhancing fish Underwater Visual Census to move forward assessment of fish assemblages: An application in three Mediterranean Marine Protected Areas. [PDF]

open access: yesPLoS One, 2017
Monitoring fish assemblages is needed to assess whether Marine Protected Areas (MPAs) are meeting their conservation and fisheries management goals, as it allows one to track the progress of recovery of exploited species and associated communities. Underwater Visual Census techniques (UVC) are used to monitor fish assemblages in MPAs.
Prato G   +3 more
europepmc   +5 more sources

Complementarity of rotating video and underwater visual census for assessing species richness, frequency and density of reef fish on coral reef slopes. [PDF]

open access: yesPLoS One, 2014
Estimating diversity and abundance of fish species is fundamental for understanding community structure and dynamics of coral reefs. When designing a sampling protocol, one crucial step is the choice of the most suitable sampling technique which is a compromise between the questions addressed, the available means and the precision required.
Mallet D   +4 more
europepmc   +7 more sources

Kondisi Terumbu Karang di Perairan Pulau Beras Basah Kotamadya Bontang

open access: yesJurnal Pertanian Terpadu, 2017
Penelitian ini bertujuan untuk mengetahui kondisi terkini terumbu karang di Perairan Pulau Beras Basah Kotamadya Bontang. Pengambilan data dilakukan dengan metode reef check yaitu kombinasi antara metode point intercept transect dan underwater visual ...
Omega Raya Simarangkir
doaj   +3 more sources

Determining Methods of Underwater Visual Census for Estimating the Abundance of Coral Reef Fishes [PDF]

open access: yesEnvironmental Biology of Fishes, 2000
We aimed to determine optimal methods of underwater visual census (UVC) for estimating the abundance of coral reef fishes exploited by fisheries in the tropical Pacific. Two main methods were tested using SCUBA: strip transect and stationary point counts.
Samoilys, Melita A., Carlos, Gary
openaire   +2 more sources

Automatic Extraction and Counting of Fish from Underwater Videos Using YOLO-Based Deep Learning Algorithms [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
In the context of increasing pressure on marine species, effective and automated methodologies for biodiversity monitoring are essential, particularly in sensitive ecosystems such as the Mediterranean Sea.
F. Gallitto   +8 more
doaj   +1 more source

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