Changes in phytoplankton composition in a <scp>M</scp>editerranean coastal lagoon in the <scp>C</scp>ullera <scp>E</scp>stany (<scp>C</scp>omunitat <scp>V</scp>alenciana, <scp>S</scp>pain)

Pachés, M.; Romero, I.; Martínez-Guijarro, R.; Martí, Carmen M.; Ferrer, J.

doi:10.1111/wej.12020

Cited by 10 publications

(11 citation statements)

References 23 publications

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“…In several temperate lagoons, seasonal distribution of phytoplankton groups was more strongly correlated with temperature than with salinity (Armi et al 2010, Pachés et al 2014. Our results resembled those of Melo et al (2007) for the tropical zone, where fluctuations in salinity and nutrient availability were the main drivers of phytoplankton community structure.…”

Section: Discussionsupporting

confidence: 72%

Plankton community dynamics in a subtropical lagoonal system and related factors

Donadel

Cardoso

Torgan

2016

An. Acad. Bras. Ciênc.

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Changes of the plankton community in a shallow, subtropical lagoonal system and its relation to environmental conditions were investigated during an annual cycle to provide information on its spatial and seasonal variation pattern. The study carried out at four sites (three in the Peixe lagoon and one in the Ruivo lagoon), which are located in the Lagoa do Peixe National Park, southern Brazil. The system has a temporary connection to the Atlantic Ocean by a narrow channel. The phytoplankton density was higher in the Peixe lagoon whereas the specifi c richness was higher in the Ruivo lagoon which is also a site with the lower salinity. The phytoplankton biomass near the channel showed seasonal variation with the highest value in fall and lowest in winter. Zooplankton richness was inversely correlated with salinity, and had the highest values in the Ruivo lagoon. Ordination analysis indicated seasonal and spatial patterns in plankton community in this lagoonal system, related to variation in salinity. In addition, the wind action and precipitation were important factors on the spatial and seasonal salinity changes in the lagoon with direct infl uence on the plankton community dynamics.

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Section: Discussionsupporting

confidence: 72%

Plankton community dynamics in a subtropical lagoonal system and related factors

Donadel

Cardoso

Torgan

2016

An. Acad. Bras. Ciênc.

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“…The 504 phytoplankton dominance may be related to its strong capacity to compete for dissolved (Table 2). This phytoplankton functional group is tolerant to low 588 salinity as observed in freshwater and brackish coastal lagoons (Coelho et al, 2007;589 Cartaxana et al, 2009;Pachés et al, 2014) and is often observed in hypertrophic systems such 590…”

Section: Phytoplankton Chlorophyll Biomass In Heavily Eutrophied Lagomentioning

confidence: 99%

First steps of ecological restoration in Mediterranean lagoons: Shifts in phytoplankton communities

Leruste

Malet

Munaron

et al. 2016

Estuarine, Coastal and Shelf Science

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Along the French Mediterranean coast, a complex of eight lagoons underwent intensive eutrophication over four decades, mainly related to nutrient over-enrichment from continuous sewage discharges. The lagoon complex displayed a wide trophic gradient from mesotrophy to hypertrophy and primary production was dominated by phytoplankton communities. In 2005, the implementation of an 11 km offshore outfall system diverted the treated sewage effluents leading to a drastic reduction of anthropogenic inputs of nitrogen and phosphorus into the lagoons. Time series data have been examined from 2000 to 2013 for physical, chemical and biological (phytoplankton) variables of the water column during the summer period. Since 2006, total nitrogen and phosphorus concentrations as well as chlorophyll biomass strongly decreased revealing an improvement in lagoon water quality. In summertime, the decline in phytoplankton biomass was accompanied by shifts in community structure and composition that could be explained by adopting a functional approach by considering the common functional traits of the main algal groups. These phytoplankton communities were dominated by functional groups of small-sized and fast-growing algae (diatoms, cryptophytes and green algae). The trajectories of summer phytoplankton communities displayed a complex response to changing nutrient loads over time. While diatoms were the major group in 2006 in all the lagoons, the summer phytoplankton composition in hypertrophic lagoons has shifted towards green algae, which are particularly well adapted to summertime conditions. All lagoons showed increasing proportion and occurrence of peridinin-rich dinophytes over time, probably related to their capacity for mixotrophy. The diversity patterns were marked by a strong variability in eutrophic and hypertrophic lagoons whereas phytoplankton community structure reached the highest diversity and stability in mesotrophic lagoons. We observe that during the re-oligotrophication process in coastal lagoons, phytoplankton shows complex trajectories with similarities with those observed in freshwater lake systems.

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“…These particular physicochemical characteristics lead to a low chlorophyll a production not exceeding 5.84 μg.L -1 with an annual average of 2.41 μg.L -1 . These values are often low compared to several lagoons in the Mediterranean (Badosa et al, 2008;Roselli et al, 2009;Cañedo-Argüelles et al, 2012;Bernardi Aubry et al, 2013;Pachés et al, 2014). This physicochemical and hydrological situation is the result of a double effect.…”

Section: Discussionmentioning

confidence: 94%

“…) are often lower compared with ecosystems of neighboring countries including Bizerte lagoon in Tunisia (Sahraoui et al, 2009;Béjaoui et al, 2010) and Nador lagoon in Morocco (El-Madani et al, 2011). Overall Mellah lagoon waters are well oxygenated unlike some Mediterranean lagoons which are characterized by periodic dystrophy crisis when the dissolved oxygen can reach critical values (Lenzi et al 2003;Viaroli et al, 2006;Marinov et al, 2008;El Madani et al, 2011;Pachés et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Regarding the spatiotemporal distribution of nutrients, unlike the majority of Mediterranean lagoons which are often characterized by a significant enrichment in nutrient salts (Souchu et al, 2010;El Madani et al, 2011;Satta et al, 2014;Pachés et al, 2014;Zaaboub et al, 2014), the Mellah lagoon, due to its waters less rich in nutrients, ranks among the meso-oligotrophic lagoons (OECD, 1982). These particular physicochemical characteristics lead to a low chlorophyll a production not exceeding 5.84 μg.L -1 with an annual average of 2.41 μg.L -1 .…”

Section: Discussionmentioning

confidence: 99%

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Diatoms diversity and dynamics in a southern Mediterranean lagoon (Mellah, Algeria)

Draredja¹,

Barour²,

Frihi³

et al. 2019

Biodiversity Journal

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The composition and distribution of diatoms were studied using a biweekly sampling performed in three representative stations in the Mellah Lagoon (South Western Mediterranean, Algeria), during 2016. In total, 160 diatoms species-belonging to centric species (52 species) and pennate species (108 species)-were inventoried. The relative abundance of the pennate forms (67.50%) is clearly higher compared to the centric forms (32.50%). The blooms of diatoms are represented by 3 species: Chaetoceros constrictus Gran, 1897 with up to 15000 cells.L-1 (end of May), Chaetoceros sp. with up to 178320 cells.L-1 (early October), and Nitzschia longissima (Brébisson) Ralfs, 1861 with up to 200640 cells.L-1 (early September). Proliferations of three potentially toxic species: Pseudo-nitzschia group delicatissima (Cleve) Heiden, 1928 (2500 cells.L-1), Pseudo-nitzschia group seriata (Cleve) H. Peragallo, 1899 (700 cells.L-1) and Thalassionema nitzschoides (Grunow) Mereschkowsky, 1902 (210 cells.L-1), requires regular monitoring of this ecosystem where the exploitation of the shells is practiced. The diatom populations seem to be structured showing diversity (H') and equitability (J') indices reaching 4.56 bits.cell and 0.98 respectively, with the exception of springsummer and summer-autumn transition periods. high biological productivity and biodiversity (Knoppers, 1994). However, the lagoons are very sensitive environments, fragile and extremely vulnerable, in relation to the organization of their living and non-living components which depends on the interaction between the natural components of the marine and continental areas (Dufour et al., 1994). Due to the wide variability of their physical, chemical and biological parameters, coastal lagoons are generally unstable environments. The

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Changes in phytoplankton composition in a Mediterranean coastal lagoon in the Cullera Estany (Comunitat Valenciana, Spain)

Abstract: The Cullera Estany is a coastal lagoon located in a highly intensified agriculture and tourist area in Valencia. This coastal lagoon has connections with the sea that produce marine intrusion and generate a freshwater interface.

Cited by 10 publications

References 23 publications

Plankton community dynamics in a subtropical lagoonal system and related factors

Plankton community dynamics in a subtropical lagoonal system and related factors

First steps of ecological restoration in Mediterranean lagoons: Shifts in phytoplankton communities

Diatoms diversity and dynamics in a southern Mediterranean lagoon (Mellah, Algeria)

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