@article{fdi:010055809, title = {{R}emote high-definition rotating video enables fast spatial survey of marine underwater macrofauna and habitats}, author = {{P}elletier, {D}. and {L}eleu, {K}. and {M}allet, {D}. and {M}ou-{T}ham, {G}{\'e}rard and {H}erv{\'e}, {G}. and {B}oureau, {M}. and {G}uilpart, {N}.}, editor = {}, language = {{ENG}}, abstract = {{O}bserving spatial and temporal variations of marine biodiversity from non-destructive techniques is central for understanding ecosystem resilience, and for monitoring and assessing conservation strategies, e.g. {M}arine {P}rotected {A}reas. {O}bservations are generally obtained through {U}nderwater {V}isual {C}ensuses ({UVC}) conducted by divers. {T}he problems inherent to the presence of divers have been discussed in several papers. {V}ideo techniques are increasingly used for observing underwater macrofauna and habitat. {M}ost video techniques that do not need the presence of a diver use baited remote systems. {I}n this paper, we present an original video technique which relies on a remote unbaited rotating remote system including a high definition camera. {T}he system is set on the sea floor to record images. {T}hese are then analysed at the office to quantify biotic and abiotic sea bottom cover, and to identify and count fish species and other species like marine turtles. {T}he technique was extensively tested in a highly diversified coral reef ecosystem in the {S}outh {L}agoon of {N}ew {C}aledonia, based on a protocol covering both protected and unprotected areas in major lagoon habitats. {T}he technique enabled to detect and identify a large number of species, and in particular fished species, which were not disturbed by the system. {H}abitat could easily be investigated through the images. {A} large number of observations could be carried out per day at sea. {T}his study showed the strong potential of this non obtrusive technique for observing both macrofauna and habitat. {I}t offers a unique spatial coverage and can be implemented at sea at a reasonable cost by non-expert staff. {A}s such, this technique is particularly interesting for investigating and monitoring coastal biodiversity in the light of current conservation challenges and increasing monitoring needs.}, keywords = {}, booktitle = {}, journal = {{P}los {O}ne}, volume = {7}, numero = {2}, pages = {e30536}, ISSN = {1932-6203}, year = {2012}, DOI = {10.1371/journal.pone.0030536}, URL = {https://www.documentation.ird.fr/hor/fdi:010055809}, }