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Authors Prado, P; Caiola, N; Ibanez, C
Author Full Name Prado, Patricia; Caiola, Nuno; Ibanez, Carles
Title Spatio-Temporal Patterns of Submerged Macrophytes in Three Hydrologically Altered Mediterranean Coastal Lagoons
Source ESTUARIES AND COASTS
Language English
Document Type Article
Author Keywords Coastal lagoons; Freshwater inputs; Salinity; Submerged macrophytes; Ruppia cirrhosa; Potamogeton pectinatus; Ebro delta; Flowering rates
Keywords Plus RUPPIA-DOMINATED COMMUNITIES; POTAMOGETON-PECTINATUS L; WESTERN-EUROPE; NAJAS-MARINA; SPATIAL-DISTRIBUTION; POSIDONIA-OCEANICA; LIFE-CYCLES; SALINITY; ZOSTERA; BIOMASS
Abstract Rice cultivation in the Ebro Delta (Catalonia, Spain) has inverted the natural hydrological cycles of coastal lagoons and decreased water salinities for over 150 years. Adjustments in the water management practices-in terms of source and amount of freshwater inputs-have resulted in changes in the diversity, distribution and productivity of submerged angiosperms. Between the 1970s and late 1980s, a massive decline of the aquatic vegetation occurred in the Encanyissada-Clot and Tancada lagoons, but little information on the status is available after the recovery of macrophytes in the 1990s. Here, we evaluate the influence of salinity regimes resulting from current water management practices on the composition, distribution, seasonal abundance and flowering rates of submersed macrophytes, as well as on the occurrence of epiphyte and drift macroalgae blooms in three coastal lagoons. Our results show that Ruppia cirrhosa is the dominant species in the Encanyissada lagoon (185.97 +/- 29.74 g DW m(-2) year(-1); 12-27 aEuro degrees salinity) and the only plant species found in the Tancada lagoon (53.26 +/- 10.94 g DW m(2) year(-1); 16-28 aEuro degrees salinity). Flowering of R. cirrhosa (up to 1,011 +/- 121 flowers m(-2)) was only observed within the Encanyissada and suggests that mesohaline summer conditions may favor these events. In contrast, low salinities in Clot lagoon (similar to 3-12 aEuro degrees) favor the development of Potamogeton pectinatus (130.53 +/- 13.79 g DW m(2) year(-1)) with intersperse R. cirrhosa (8.58 +/- 1.71 g DW m(-2)) and mixed stands of P. pectinatus and Najas marina (up to similar to 57 g DW m(-2) year(-1)) in some reduced areas. The peak biomasses observed during the study are 88 to 95 % lower than maximum values reported in the literature at similar salinities, and there is also little or no recovery in some areas compared to last reports more than 20 years ago. The main management actions to restore the natural diversity and productivity of submersed angiosperms, such as the recovering of the seagrass Zostera noltii, should be the increase of salinity during the period of rice cultivation, by reducing freshwater inputs and increasing flushing connections with the bays.
Author Address [Prado, Patricia; Caiola, Nuno; Ibanez, Carles] IRTA Aquat Ecosyst, Tarragona 43540, Spain
Reprint Address Prado, P (reprint author), IRTA Aquat Ecosyst, Ctra Poble Nou Km 5-5, Tarragona 43540, Spain.
E-mail Address Patricia.Prado@irta.cat
ResearcherID Number Villegas, Patricia Prado/J-7483-2012; Caiola, Nuno/A-5694-2008; Prado, Patricia/N-9903-2019; Ibanez, Carles/D-2777-2009
ORCID Number Villegas, Patricia Prado/0000-0002-4986-2010; Caiola, Nuno/0000-0003-2692-2954; Prado, Patricia/0000-0002-4986-2010; Ibanez, Carles/0000-0002-7091-5527
Funding Agency and Grant Number Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA)Instituto de Investigacion Agropecuaria (INIA); Fondo Europeo de Desarrollo Regional (FEDER)European Union (EU) [RTA 2009-0048-00-00]; Beatriu de Pinos postdoctoral fellowship from the Catalonian Government (AGAUR)
Funding Text Financial support was provided by the Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA) and the Fondo Europeo de Desarrollo Regional (FEDER). Project no. RTA 2009-0048-00-00. P. Prado was supported by a Beatriu de Pinos postdoctoral fellowship from the Catalonian Government (AGAUR). We are very grateful to L. Jornet, D. Mateu, S. Rodriguez, and C. Marco for fieldwork assistance. We also thank T. Curco from the Natural Park Authority for providing access to previous reports.
Times Cited 19
Total Times Cited Count (WoS, BCI, and CSCD) 19
Publisher SPRINGER
Publisher City NEW YORK
Publisher Address 233 SPRING ST, NEW YORK, NY 10013 USA
ISSN 1559-2723
29-Character Source Abbreviation ESTUAR COAST
ISO Source Abbreviation Estuaries Coasts
Publication Date MAR
Year Published 2013
Volume 36
Issue 2
Beginning Page 414
Ending Page 429
Digital Object Identifier (DOI) 10.1007/s12237-012-9570-3
Page Count 16
Web of Science Category Environmental Sciences; Marine & Freshwater Biology
Subject Category Environmental Sciences & Ecology; Marine & Freshwater Biology
Document Delivery Number 104SL
Unique Article Identifier WOS:000316015000014
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