Spatial patterns and GIS habitat modelling of fish in two French Mediterranean coastal areas

Crec’hriou, Romain; Bonhomme, Patrick; Criquet, Géraldine; Cadiou, Gwenaël; Lenfant, Philippe; Roussel, Erwan; Diréach, Laurence Le; Planes, Serge

doi:10.1007/s10750-008-9483-0

Cited by 11 publications

(1 citation statement)

References 53 publications

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“…Thus, our assumption that species groups may respond to different features of the seafloor habitat was confirmed, and the sophistication of the geomorphological parameters available for this study allowed us to develop bespoke GAMs that explained a greater proportion of the deviance in the data than many previous GAM studies (e.g. Crec'hriou et al 2008.…”

Section: Importance Of Bathymetry Geomorphology and Spatial Resolutsupporting

confidence: 62%

Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i

Weijerman¹,

Grüss²,

Dove³

et al. 2019

Mar. Ecol. Prog. Ser.

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As agencies shift from single-species management to ecosystem-based fisheries management, ecosystem models are gaining interest for understanding species dynamics in relation to oceanographic and ecological processes and human marine uses. However, information on community structure or distribution of many species that occupy deep (> 30 m) waters is largely unavailable. We amassed a total of 24 686 fish observations of 523 species/taxa for the 30−410 m depth areas surrounding the main Hawaiian Islands (MHI). We also obtained estimates of geomorphological variables, including substrate type, slope, rugosity, and ridge-like features. Using these 2 data sources, we (1) identified distinct fish communities along the 30−410 m depth gradient, and (2) generated relative biomass maps for fish functional groups. We showed that the mesophotic zone ranges between 30 and 129 m, with a fish faunal break at 60 m. Beyond this zone, 4 subphotic zones were identified: upper rariphotic (130−169 m), mid-rariphotic (170−239 m), lower rariphotic (240−319 m), and upper bathyal (320−410 m). We assigned fish species to functional groups partly based on identified depth ranges and fitted general additive models (GAMs) integrating geomorphological covariates to the functional group relative biomass estimates to determine the environmental variables that best predict the probability of encounter and relative biomass of each fish functional group. Finally, GAM predictions were employed to map functional group relative biomass distributions. These distribution maps showed a high relative biomass of many groups in the center of the MHI chain. This study contributes to a better understanding of fish community structure around the MHI and will inform ecosystem model parameterization.

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Section: Importance Of Bathymetry Geomorphology and Spatial Resolutsupporting

confidence: 62%

Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i

Weijerman¹,

Grüss²,

Dove³

et al. 2019

Mar. Ecol. Prog. Ser.

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Suitability indices and habitat suitability index model of Caspian kutum (Rutilus frisii kutum) in the southern Caspian Sea

et al. 2013

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The Influence of Boundary Habitat Continuity on Spillover from a Mediterranean Marine Protected Area

Pinillos

Riera

2022

Thalassas

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The effectiveness of marine protected areas (MPAs) to restore populations of exploited species, both within and outside of their boundaries through net movement of individuals (“spillover”), can potentially be affected by continuity of habitats across the boundaries. Sandy seabeds may reduce movement of reef-associated species across MPA boundaries, thereby increasing the ‘reserve effect’ while decreasing spillover. Underwater visual censuses were undertaken inside the Cerbère-Banyuls Marine Reserve (CBMR) (France) and adjacent non-protected areas to assess the influence of habitat on spillover. Total fish biomass and mean fish size were significantly higher within the MPA, but rapidly declined across the reserve boundary. Nevertheless, there was no indication of a sharper decline in biomass at the northern boundary where a habitat discontinuity was present relative to the southern boundary with continuous habitat. This result may reflect a number of complicating factors that make assessment of spillover potential difficult, and which may also lead to the uncertainty about which situations and how much spillover may contribute to fished populations outside reserves. In particular, the home range area of the key exploited species relative to the scale of the habitat mosaic, and potentially different levels of fishing pressure at each boundary likely contribute to variability. While the CBMR appeared particularly well-suited to investigating this question, resolving these issues and identifying general principles for where and how much spillover occurs will likely be difficult without a series of specially designed MPAs. This highlights a conundrum facing MPA establishment in the face of pressures to be successful for both biodiversity conservation and to offer fisheries benefits—the latter are clearly not ubiquitous, but a shortage of suitable MPAs that can be used as scientific tools for better understanding how and when these benefits may occur is precluded by a general lack of MPAs designed and managed for this purpose. The results of this study do, however, clearly highlight the biodiversity conservation benefits of the CBMR.

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Spatial patterns and GIS habitat modelling of fish in two French Mediterranean coastal areas

Cited by 11 publications

References 53 publications

Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i

Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai‘i

Suitability indices and habitat suitability index model of Caspian kutum (Rutilus frisii kutum) in the southern Caspian Sea

The Influence of Boundary Habitat Continuity on Spillover from a Mediterranean Marine Protected Area

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