Benthic community recovery from brine impact after the implementation of mitigation measures

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Title: Benthic community recovery from brine impact after the implementation of mitigation measures
Authors: Del-Pilar-Ruso, Yoana | Martinez-Garcia, Elena | Gimenez-Casalduero, Francisca | Loya-Fernández, Angel | Ferrero-Vicente, Luis Miguel | Marco-Méndez, Candela | de-la-Ossa-Carretero, Jose Antonio | Sánchez-Lizaso, José Luis
Research Group/s: Biología Marina | Recursos Hídricos y Desarrollo Sostenible
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada
Keywords: Polychaete assemblage | Brine discharge | Mitigation measures | Recovery | Soft bottom | Mediterranean
Knowledge Area: Zoología
Issue Date: 1-Mar-2015
Publisher: Elsevier
Citation: Water Research. 2015, 70: 325-336. doi:10.1016/j.watres.2014.11.036
Abstract: In many regions, seawater desalination is a growing industry that has its impact on benthic communities. This study analyses the effect on benthic communities of a mitigation measure applied to a brine discharge, using polychaete assemblages as indicator. An eight-year study was conducted at San Pedro del Pinatar (SE Spain) establishing a grid of 12 sites at a depth range of 29–38 m during autumn. Brine discharge started in 2006 and produced a significant decrease in abundance, richness and diversity of polychaete families at the location closest to the discharge, where salinity reached 49. In 2010, a diffuser was deployed at the end of the pipeline in order to increase the mixing, to reduce the impact on benthic communities. After implementation of this mitigation measure, the salinity measured close to discharge was less than 38.5 and a significant recovery in polychaete richness and diversity was detected, to levels similar to those before the discharge. A less evident recovery in abundance was also observed, probably due to different recovery rates of polychaete families. Some families like Paraonidae and Magelonidae were more tolerant to this impact. Others like Syllidae and Capitellidae recovered quickly, although still affected by the discharge, while some families such as Sabellidae and Cirratulidae appeared to recover more slowly.
Sponsor: These surveys were funded by the Mancomunidad de Canales del Taibilla.
ISSN: 0043-1354 (Print) | 1879-2448 (Online)
DOI: 10.1016/j.watres.2014.11.036
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version:
Appears in Collections:INV - BM - Artículos Científicos / Scientific Papers
INV - Recursos Hídricos y Desarrollo Sostenible - Artículos de Revistas

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