Publication:
The relict population of Pinna nobilis in the Mar Menor is facing an uncertain future

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Date
2022-11-21
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Authors
Cortés Melendreras, Emilio ; Gomariz Castillo, Francisco ; Alonso Sarria, Francisco ; Giménez Martín, Francisco J. ; Murcia, Javier ; Canales Cáceres, Rosa ; Ramos Esplá, Alfonso A. ; Barberá, Carmen ; Gimenez Casalduero, Francisca
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Publisher
Pergamon-Elsevier Science Ltd
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DOI
10.1016/j.marpolbul.2022.114376
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Description
© 2022 The Authors. This document is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0/ This document is the published version of a published work that appeared in final form in Marine Pollution Bulletin.
Abstract
Pinna nobilis is undergoing one of the most dramatic events suffered by an endangered species. An emerging disease has relegated its populations to coastal lagoons or estuaries with salinities beyond the 36.5–39.7 psu range. The Mar Menor is one of two such locations on the Spanish coastline. Poor environmental conditions and eutrophication and anoxia events, that became critical in 2016, 2019 and 2021, have reduced its population in >99 %. In this work, the spatial distribution of the species within the lagoon and the factors determining its survival along the successive crises of eutrophication are studied using a two-stage (presence/absence estimation and density modelling) Species Distribution Model. A potential area of 200.97 ha and an average density of 1.05 ind.100 m2 is estimated for 2020. The viability of the Mar Menor population depends on management actions designed both for the species and to improve the lagoon environmental state.
Citation
Marine Pollution Bulletin 185 (2022) 114376
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