Yolanda Fernández‐Torquemada

University of Alicante

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José Luis Sánchez‐Lizaso

University of Alicante

José Miguel González Correa

University of Alicante

Yoana Del‐Pilar‐Ruso

University of Alicante

Fernando Tuya

Universidad de Las Palmas de Gran Canaria

C.C. Teague

Codar Ocean Sensors (United States)

J.F. Vesecky

University of California, Santa Cruz

Fernando Espino

Universidad de Las Palmas de Gran Canaria

Jorge Terrados

Mediterranean Institute for Advanced Studies

Fiona Tomàs

Mediterranean Institute for Advanced Studies

Candela Marco-Méndez

Centre d'Estudis Avançats de Blanes

Cooperative Institutions

University of Alicante

Consejo Superior de Investigaciones Científicas

Centre d'Estudis Avançats de Blanes

Mediterranean Institute for Advanced Studies

Universitat de Barcelona

Universidad de Las Palmas de Gran Canaria

Instituto Español de Oceanografía

Universitat de les Illes Balears

Dauphin Island Sea Lab

University of Algarve

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Environmental research on brine discharge optimization: A case study approach

Desalination and Water Treatment (2011)

Encarna González Beatriz Arconada Patrícia Valério Alvar Alcaraz Ana de Luis

Desalination plants constitute a new way of solving the shortage and degradation of Mediterranean hydric resources by providing a new source of water supply according to local demand, and, at the same time, being climatically independent. Since all desalination plants are located on the shoreline, environmental constraints have to do with water intake and sea outfall discharges. As for brine discharging, a wide range of case-study research is being carried out in order to solve technical uncertainties and provide our projects with preventive measures. The first of these case studies regards the prediction of brine discharge behaviour by using a reduced scale model to simulate the way it is likely to perform in a harbour. The second case-study deals with mixing brine with a thermal effluent in a pipeline to obtain a better dilution that might then minimize its impact on the area. The third case-study is aimed at protecting marine biodiversity by studying into the effects of salinity increase on the growth and survival of the seagrass Cymodocea nodosa.

Outfall

Brine

Boiler feedwater

10.5004/dwt.2011.2361

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Citations (5)

Biogeographical scenarios modulate seagrass resistance to small‐scale perturbations

Journal of Ecology (2018)

Fernando Tuya Yolanda Fernández‐Torquemada Jesús Zarcero Yoana Del‐Pilar‐Ruso Ina Csenteri

Abstract Seagrasses constitute a key coastal habitat world‐wide, but are exposed to multiple perturbations. Understanding elements affecting seagrass resistance to disturbances is critical for conservation. Distinct biogeographical scenarios are intrinsically linked with varying ecological and evolution backgrounds shaped across millennia. We addressed whether the resistance (change in shoot abundances) and performance (change in leaf morphology and growth) of the seagrass Cymodocea nodosa to a local stressor, light reduction, varied across three regions (Southeast Iberia, the Balearic Sea, and the Canaries) within the temperate northern Atlantic realm. We hypothesized that distinct biogeographical scenarios, in terms of distinct ecological/environmental conditions and genetic diversity of meadows, would affect seagrass resistance and performance, with flow‐on effects on associated epifauna. The same experiments, in terms of shading intensities, timing and duration, were replicated at three seagrass meadows within each region. Results demonstrated inter‐regional variation in the resistance and performance of C. nodosa . Under moderate and high shading, shoot abundance was abruptly decreased, relative to controls, in the Canaries with concurrent, but less accentuated, changes in leaf morphology and no changes in growth. In the other two regions, however, moderate and high shading had a negligible effect on shoot abundance, leaf morphology, and growth. Shading had no overall effect over the total abundance and assemblage structure of epifauna; these faunal attributes, however, varied between regions. Low seagrass resistance at the Canaries is linked with the peripheral distribution of the species there, favouring isolation and decreased genetic diversity. Synthesis . Different biogeographical scenarios shape seagrass resistance to local perturbations. From a conservation perspective, if resistance differs among biogeographical scenarios, universal conservation rules for seagrasses are challenging.

10.1111/1365-2745.13114

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Citations (33)

Effects of salinity on seed germination and early seedling growth of the Mediterranean seagrass Posidonia oceanica (L.) Delile

Estuarine Coastal and Shelf Science (2013)

Yolanda Fernández‐Torquemada José Luis Sánchez‐Lizaso

Posidonia oceanica

Potamogetonaceae

10.1016/j.ecss.2012.12.013

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Citations (48)

Partitioning resilience of a marine foundation species into resistance and recovery trajectories

Oecologia (2021)

Fernando Tuya Yolanda Fernández‐Torquemada Yoana Del‐Pilar‐Ruso Fernando Espino Pablo Manent

Posidonia oceanica

10.1007/s00442-021-04945-4

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Citations (14)

Efectos de las variaciones de salinidad sobre angiospermas marinas y su aplicación a los vertidos de plantas desalinizadoras

Yolanda Fernández‐Torquemada

Las praderas de angiospermas marinas se consideran uno de los habitats con mayor importancia ecologica y economica presentes en la zona infralitoral de todos los mares, exceptuando las zonas polares, pero son ecosistemas fragiles y por lo tanto se encuentran en regresion debido a diversas actividades antropicas. A los impactos tradicionales y mejor conocidos, habria que anadir los que pueden producir nuevas actividades humanas actualmente en expansion, como la desalinizacion. La desalinizacion por osmosis inversa produce un vertido hipersalino que suele ser de mayor densidad que el medio marino receptor, por lo que dificilmente se mezcla con el resto de la columna de agua y puede afectar a comunidades bentonicas, como las praderas de angiospermas marinas. El objetivo general de esta tesis es aportar nuevos conocimientos sobre los efectos de las variaciones de salinidad, principalmente incrementos, en cuatro especies de angiospermas marinas, de las que se desconoce su tolerancia frente a la salinidad. A su vez, se estudiaron los efectos in situ de varios vertidos hipersalinos de plantas desalinizadoras. Segun los resultados obtenidos, las variaciones de la salinidad, incluso en experimentos de corta duracion, afectan de forma significativa al crecimiento y la supervivencia de las angiospermas marinas: Posidonia oceanica, Cymodocea nodosa, Zostera noltii y Halophila johnsonii. Siendo Posidonia oceanica la especie menos tolerante, de las estudiadas, a aumentos en la salinidad del medio que la rodea. Ademas, en plantas adultas de estas especies, un incremento de la salinidad provoca una reduccion significativa de la actividad fotosintetica y del crecimiento foliar, un aumento de su mortalidad, la aparicion de manchas de necrosis en sus hojas y una mayor caida de estas. Respecto a los estudios in situ se observo que los vertidos de desalinizadoras estudiados en el presente trabajo tuvieron una dispersion y una afeccion sobre las comunidades biologicas considerablemente distinta, en el espacio y en el tiempo, debido a su diferente caudal, localizacion, dilucion y salinidad inicial, y factores del medio receptor. Por tanto, la mejor opcion a la hora de ubicar un vertido de desalinizadora es emplear zonas artificiales o muy degradadas, maximizando la dilucion del mismo. Un vertido en costa, cercano a comunidades de gran valor ecologico, requiere un estricto programa de vigilancia ambiental que permita aumentar la dilucion del vertido cuando sea necesario o incluso disminuir la produccion de la desalinizadora.

Posidonia oceanica

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Dispersion of brine discharge from seawater reverse osmosis desalination plants

Desalination and Water Treatment (2009)

Yolanda Fernández‐Torquemada José Miguel González Correa Angel Loya Luis Miguel Ferrero Marta Díaz‐Valdés

Desalination of seawater has been considered as a potential solution for the water shortage problem in coastal areas and the number of projected and constructed desalination plants has significantly increased in recent years. The challenge of the desalination industry is to produce new water resources without increasing the pressure on the marine environment. Environmental impact of SWRO desalination plants is mainly associated with the discharge into the sea of the brine produced. To estimate the area of influence of the brine several models have been proposed, but validation with real data is needed. The objective of this paper is to present the results of the monitoring of the brine effluent emanating from several SWRO desalination plants in the western Mediterranean Sea in order to estimate the area of influence of the hypersaline plume. We also illustrate how the behavior of these brine discharges can differ significantly according to discharge characteristics. This information may be useful to predict effluent distribution in order to minimize the harmful effects of brine discharges into the sea.

Brine

Reverse osmosis plant

Osmotic power

10.5004/dwt.2009.576

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Citations (89)

Spatial and Temporal Variability of Posidonia oceanica Monitoring Indicators, Valencian Community, Spain

Water (2020)

Yolanda Fernández‐Torquemada Marta Díaz‐Valdés Andrés Izquierdo‐Muñoz José Luis Sánchez‐Lizaso Alfonso A. Ramos‐Esplá

This article presents the results from the long-term Water Framework Directive monitoring of Posidonia oceanica in the Valencian Community, Spain. A total of six areas where Posidonia occurs were studied. Locations were characterized by a different ecological condition: degraded Posidonia meadows; meadows in good conditions; meadows close to the best reference conditions. The spatiotemporal variability of different indicators were sampled from 2005 to 2017. Lower quality meadows are characterized by a lower density and coverage of Posidonia, a higher proportion of dead Posidonia, a higher proportion of plagiotropic rhizomes, smaller shoots, and higher epiphyte biomass, as well as the presence of foliar necrosis marks. For all study sites, the temporal trends indicated a decrease in the quality of the meadows from 2005 to 2011 and a recovery from 2012 to 2017. Some variability observed in the indicators such as P. oceanica cover in patchy meadows, could not be explained by changes in the meadow health.

Posidonia oceanica

Potamogetonaceae

Epiphyte

10.3390/w12113235

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Citations (8)

Salinity fluctuation of the brine discharge affects growth and survival of the seagrass Cymodocea nodosa

Marine Pollution Bulletin (2014)

Aurora Garrote-Moreno Yolanda Fernández‐Torquemada José Luis Sánchez‐Lizaso

Brine

10.1016/j.marpolbul.2014.02.019

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Citations (59)

Comparing shoot population dynamics methods on Posidonia oceanica meadows

Journal of Experimental Marine Biology and Ecology (2007)

José Miguel González Correa Yolanda Fernández‐Torquemada José Luis Sánchez‐Lizaso

Posidonia oceanica

Potamogetonaceae

Age structure

10.1016/j.jembe.2007.09.008

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Citations (5)

An Outbreak of the Invasive Macroalgae Rugulopteryx Okamurae in Alicante Bay and its Rapid Spread on Dead Posidonia Oceanica Matte

Marc Terradas Fernández Carolina Pena-Martín Pena-Martín Miguel Valverde-Urrea Alicia Gran Fabio Blanco-Murillo

Rugulopteryx okamurae is a widely distributed species in the Asia-Pacific region which has been recently introduced in the Mediterranean Sea. In 2002 it was first detected at Thau Lagoon, not behaving as an invasive species. However, new introductions on the coasts of Marseille, Alboran Sea and the Macaronesian region showed overgrowing in most native algal communities, having an impact on artisanal fishing, and affecting a wide bathymetric range.We report the first occurrence of R. okamurae in Alicante Bay, which means it is the northernmost location in the Iberian Mediterranean where this species was detected. Collected specimens in the area were studied from a morphological and molecular approach. A rapid assessment survey was carried out in order to evaluate the presence and abundance of this alga in the nearest beach-cast and infralittoral.The highest abundance of this species was found over dead P. oceanica matte, occupying an important extension in the bay. As in previous colonized locations, R. okamurae fragments were found detached, being dispersed due to the local hydrodynamism, and arriving and accumulating in some tourist beaches of the area.The potential suitability of the Mediterranean for the spread of R. okamurae makes it necessary to monitor programs studying its variation over time and its possible effect on the native biota.

Posidonia oceanica

10.2139/ssrn.4432435

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