@article{fdi:010080656,
  title = {{B}ottom trawling on a carbonate shelf : do we get what we see ?},
  author = {de {B}arros, {M}. {J}. {G}. and {E}duardo, {L}. {N}. and {B}ertrand, {A}rnaud and {L}ucena-{F}redou, {F}. and {F}redou, {T}. and {L}ira, {A}. {S}. and {F}erreira, {B}. {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ottom trawling is a common fisheries method and also a widespread scientific sampling method for benthic and demersal species. {S}electivity and catchability are usually estimated using different meshes and studies with alternative methods are rare. {I}n this study, to improve the estimation of trawl selectivity, we compare bottom trawl catches and recordings made by a camera fitted on the top of the net. {S}cientific trawling was conducted along the {N}ortheast {B}razilian shelf, a typical carbonate shelf with presence of sponges, coralline bottoms and a high water visibility. {I}n total, 23 taxa (19 species and four genera) were identified in the videos and 30 taxa (25 species and five genera) in the trawls, indicating a higher potential of trawling to record species richness. {O}verall, no significant differences were observed in the assemblage structure identified by trawling and underwater footages. {H}owever, divergences were observed in fish catchability between trawls and videos. {N}et sampling was more selective for fish with low swimming capacity, while species with shelter and fast swimming capacity seemed to be underestimated. {F}urthermore, underwater footages allowed for an assessment of the trawling impacts on erect sponges with the observation of the damage on large branching and tubular sponges. {T}he vulnerability of those habitats that concentrate higher fish diversity to mechanical impact raise the need for creation of preventive measures to protect these sensitive areas from commercial fishing operations. {T}he use of less destructive methods is an important survey alternative under special conditions, particularly in conservation areas. {I}n this study the videos could not be used as a complete alternative for the trawls, which presented higher efficiency, however, videos had shown to be a useful complement. {P}ossibly, the speed and height determined by the trawling operation affected the performance of video sampling, being performed in suboptimal conditions. {U}sing dedicated video sampling, such as towed video, could significantly improve its efficiency and compensate the disadvantages observed from the videos.},
  keywords = {{F}ish ; {U}nderwater footage ; {F}isheries ; {C}atchability ; {S}ponges ; {N}ortheast {B}razil ; {ATLANTIQUE} ; {BRESIL} {NORD} {EST}},
  booktitle = {},
  journal = {{C}ontinental {S}helf {R}esearch},
  volume = {213},
  numero = {},
  pages = {104314 [7 ]},
  ISSN = {0278-4343},
  year = {2021},
  DOI = {10.1016/j.csr.2020.104314},
  URL = {https://www.documentation.ird.fr/hor/fdi:010080656},
}