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• W2047072171 abstract "The management and protection of potentially vulnerable species and habitats require the availability of detailed spatial data. However, such data are often not readily available in particular areas that are challenging for sampling by traditional sampling techniques, for example seamounts. Within this study habitat modelling techniques were used to create predictive maps of six species of conservation concern for the Le Danois Bank (El Cachucho Marine Protected Area in the South of the Bay of Biscay). The study used data from ECOMARG multidisciplinary surveys that aimed to create a representative picture of the physical and biological composition of the area. Classical fishing gear (otter trawl and beam trawl) was used to sample benthic communities that inhabit sedimentary areas, and non-destructive visual sampling techniques (ROV and photogrammetric sled) were used to determine the presence of epibenthic macrofauna in complex and vulnerable habitats. Multibeam echosounder data, high-resolution seismic profiles (TOPAS system) and geological data from box-corer were used to characterize the benthic terrain. ArcGIS software was used to produce high-resolution maps (75×75 m2) of such variables in the entire area. The Maximum Entropy (MAXENT) technique was used to process these data and create Habitat Suitability maps for six species of special conservation interest. The model used seven environmental variables (depth, rugosity, aspect, slope, Bathymetric Position Index (BPI) in fine and broad scale and morphosedimentary characteristics) to identify the most suitable habitats for such species and indicates which environmental factors determine their distribution. The six species models performed highly significantly better than random (p<0.0001; Mann–Whitney test) when Area Under the Curve (AUC) values were tested. This indicates that the environmental variables chosen are relevant to distinguish the distribution of these species. The Jackknife test estimated depth to be the key factor structuring their distribution, followed by the seabed morpho-sedimentary characteristics and rugosity variables. Three of the species studied (Asconema setubalense, Callogorgia verticillata and Helicolenus dactylopterus) were found to have small suitable areas as a result of being restrictive species related to the environmental characteristics of the top of the bank. The other species (Pheronema carpenteri, Phycis blennoides and Trachyscorpia cristulata), which were species less restrictive to the environmental variables used, had highly suitable areas of distribution. The study provides high-resolution maps of species that characterize the habitat of two communities included in OSPAR and NATURA networks, whose distributions corroborate the adequate protection of this area by the management measures applied at present." @default.
• W2047072171 created "2016-06-24" @default.
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• W2047072171 date "2014-08-01" @default.
• W2047072171 modified "2023-10-16" @default.
• W2047072171 title "Modelling and mapping the local distribution of representative species on the Le Danois Bank, El Cachucho Marine Protected Area (Cantabrian Sea)" @default.
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• W2047072171 doi "https://doi.org/10.1016/j.dsr2.2013.12.012" @default.
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