A baited underwater video technique to assess shallow-water Mediterranean fish assemblages: Methodological evaluation

Stobart, Ben; García-Charton, José Antonio; Espejo, C; Rochel, Elisabeth; Goñi, Raquel; Reñones, Olga; Herrero, Aarón; Crec’hriou, Romain; Polti, Sandrine; Marcos, Concepción; Planes, Serge; Pérez-Ruzafa, Ángel

doi:10.1016/j.jembe.2007.02.009

Cited by 116 publications

(137 citation statements)

References 34 publications

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“…Thus, studies comparing UVC to video are becoming more frequent. They compare mainly UVC to BRUV (Willis & Babcock 2000, Stobart et al 2007, Colton & Swearer 2010, omitting other methods of sampling using video.…”

Section: Introductionmentioning

confidence: 99%

Video transects as a complement to underwater visual census to study reserve effect on fish assemblages

Prigent‐Tessier¹,

Pastor²,

Francour³

et al. 2013

Aquat. Biol.

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The present study focuses on the use of diver-operated video (DOV) as a tool to evaluate the impact of a marine reserve on a fish assemblage, in comparison to underwater visual census (UVC). Samplings were conducted in the vicinity of the marine protected area (MPA) Cerbère-Banyuls (northwestern Mediterranean Sea). Four sites, with different levels of protection, were sampled 4 times, at depths of 5 and 10 m, to study abundance, species richness, structure of fish assemblages and fish aggregation. Results obtained by DOV and UVC provided evidence of significant effects of protection on abundance, species richness and fish assemblages. However, detection of weaker reserve effects using DOV may be limited. Furthermore, certain species are difficult to identify by video (e.g. Symphodus spp.), but DOV may be useful when studying a target and/or easily identifiable species. Contrary to UVC, DOV data can be archived and used for further study. Results concerning fish aggregation within fish assemblages showed specific patterns. Sites outside the MPA were mainly characterized by the absence of fish or few fish aggregations, and sites inside were characterized by high fish density (i.e. dispersed or patched aggregations). Thus, the fish aggregation parameter measured using DOV is an interesting metric to quantify reserve effect. Consequently, although this technique is time-consuming to produce results, DOV presents great potential for estimating MPA effectiveness while allowing simultaneous work on several sites to limit temporal bias.

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Section: Introductionmentioning

confidence: 99%

Video transects as a complement to underwater visual census to study reserve effect on fish assemblages

Prigent‐Tessier¹,

Pastor²,

Francour³

et al. 2013

Aquat. Biol.

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“…Greater efficiencies of UVCs and BCs are not surprising, especially in sampling complex habitat types such as artificial structures. UVCs allow a diverse set of habitats to be sampled, and they are therefore more likely to encounter both pelagic and benthic species (Langlois et al 2010, Stobart et al 2007, Colton and Swearer 2010. Furthermore, their active nature favours the encounter of cryptic species, which are usually hidden under crevices or in holes (Colton andSwearer 2010, Lowry et al 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Filming times of between 25 and 30 min were indicated to obtain accurate relative abundances of fish species (Stobart et al 2007, Langlois et al 2010. At Gran Canaria, once the BCs had been recovered, the same procedure was repeated on the same side but at different places (n=6), to reach a total of 60 deployments and 27 h of video recording for the whole study.…”

Section: Single Underwater Bcs (Supplementary Materialsmentioning

confidence: 99%

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

et al. 2017

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Summary: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. In this work, differences in the composition and structure of fish assemblages between the inner and outer sides of three marinas located in the temperate northern-eastern Atlantic Ocean were tested using three complementary sampling techniques: underwater visual censuses (UVC), baited cameras (BCs) and fish traps (FTs). UVCs and BCs recorded a comparable number and relative abundance of species, which in turn were much greater than those recorded by FTs. This finding supports the use of UVCs and BCs over FTs for broad ecologically studies, especially when dealing with structurally complex habitats such as artificial structures. We found differences in fish assemblage structure between the inner and outer sides of marinas, independently of the sampling method. Four small-sized species (Similiparma lurida, Thalassoma pavo, Sarpa salpa and Symphodus roissali) associated with structurally complex vegetated habitats dominated, in terms of abundance, the outer sides of marinas; Diplodus vulgaris, Diplodus sargus and Gobius niger, species with high ecological plasticity in habitat requirements, dominated the inner sides of marinas. The information provided in this study is of great interest for developing sound monitoring programmes to ascertain the effects of artificial structures on fish communities. Keywords: coastal development; marinas; habitat loss; fish assemblages; sampling methods; sampling efficiencies.Los puertos deportivos como hábitats para comunidades de peces litorales: análisis comparativo de censos visuales, cámaras con cebo y trampas para peces Resumen: La comprensión de papel ecológico que las estructuras artificiales pueden desempeñar en las comunidades de peces litorales requiere la recolección de datos precisos y fiables, a través de técnicas de muestreo eficientes. En este trabajo, las diferencias en la composición y estructura de los poblamientos de peces entre las caras interior y exterior de tres puertos deportivos situados en el océano septentrional Atlántico templado se investigaron mediante tres técnicas de muestreo complementarias: censos visuales (UVC), cámaras con cebo (BC) y trampas para peces (FT). UVC y BC registraron un número comparable de especies y abundancias relativas, que fueron mucho mayores que las registradas por FT. Esta mayor cantidad de datos recogidas apoya el uso de estas técnicas sobre FT en estudios ecológicos, especialmente cuando se trata de hábitats de elevada complejidad estructural como el caso de estructuras artificiales. Encontramos diferencias en los poblamientos de peces entre las caras interior y exterior de los puertos deportivos, independientemente del método de muestreo. Cuatro especies de pequeño tamaño (Similiparma lurida, Thalassoma pavo, Sarpa salpa and Symphodus roissali), asociadas a hábitats vegetales estructuralmente complejos, dominaron, en térmi...

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“…This approach has physical and environmental limitations (Stobart et al 2007;Murphy and Jenkins 2010), and bias due to differences between divers, including their behaviour, levels of experience and subjective decision-making (Edgar et al 2004). Remote underwater video systems (RUVS) and baited remote underwater video systems (BRUVS) have been used to minimise the limitations of UVC and the biases inherent in the presence of divers in the study environment Stobart et al 2007).…”

Section: Introductionmentioning

confidence: 99%

“…These remote video techniques are relatively non-destructive, cost-effective, retain a permanent record of the information and are not limited by depth ). However, these systems can be relatively slow to deploy and retrieve and have been predominantly used to count and measure fish Watson et al 2005;Cappo et al 2007;Stobart et al 2007). …”

Section: Introductionmentioning

confidence: 99%

An integrated data management and video system for sampling aquatic benthos

Tyne¹,

Loneragan²,

Krützen³

et al. 2010

Mar. Freshwater Res.

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Abstract. Remote video systems can be expensive, slow to deploy and the data recorded may not be available until the system has been retrieved. To overcome these issues, a rapid, non-destructive and cost-effective remote video and data management system was developed to record benthic habitats in Shark Bay, Western Australia. This system comprises a downward-oriented video camera, linked to a laptop computer, attached to the apex of a stainless steel pyramid to film a 1-m 2 area of benthos. The video image of the substratum, spatial coordinates, depth and temperature are recorded in a database at the time of deployment. A web interface was developed to manage the database and examine the video images to determine the percentage cover of seagrass, sponge type (conical/non-conical) and the total number of sponges in the quadrat. Using this system, 1380 video quadrats were collected from a study area of, 248 km 2 , ranging in water depth from 2 m to 16 m. An average of 16.4 (₃1.3 s.e.) samples was recorded every hour during 15 days. This system could be modified to quantify substratum components at a greater taxonomic resolution or to record details of the mobile fauna.

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A baited underwater video technique to assess shallow-water Mediterranean fish assemblages: Methodological evaluation

Cited by 116 publications

References 34 publications

Video transects as a complement to underwater visual census to study reserve effect on fish assemblages

Video transects as a complement to underwater visual census to study reserve effect on fish assemblages

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

An integrated data management and video system for sampling aquatic benthos

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