Geomorphological control of habitat distribution in an intermittent shallow saline lake, Gallocanta Lake, NE Spain

Álamo, Carmen Castañeda del; Prieto, Francisco Javier Gracia; Conesa, J. A.; Latorre, Borja

doi:10.1016/j.scitotenv.2020.138601

Cited by 13 publications

(9 citation statements)

References 61 publications

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“…Gallocanta Lake is surrounded by vegetation and the lake bed is colonized by Ruppia drepanensis, which is a rooted submerged macrophyte commonly found in ephemeral saline inland wetlands of the Mediterranean region [31][32][33] . Also, it harbours a large community of migratory crane (Grus grus) from November to March each year [34][35][36] .…”

Section: Organic Matter Inputsmentioning

confidence: 99%

Upside down sulphate dynamics in a saline inland lake

Margalef-Marti

Sébilo

Chanvalon

et al. 2023

Sci Rep

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The sulphur cycle has a key role on the fate of nutrients through its several interconnected reactions. Although sulphur cycling in aquatic ecosystems has been thoroughly studied since the early 70’s, its characterisation in saline endorheic lakes still deserves further exploration. Gallocanta Lake (NE Spain) is an ephemeral saline inland lake whose main sulphate source is found on the lake bed minerals and leads to dissolved sulphate concentrations higher than those of seawater. An integrative study including geochemical and isotopic characterization of surface water, porewater and sediment has been performed to address how sulphur cycling is constrained by the geological background. In freshwater and marine environments, sulphate concentration decreases with depth are commonly associated with bacterial sulphate reduction (BSR). However, in Gallocanta Lake sulphate concentrations in porewater increase from 60 mM at the water–sediment interface to 230 mM at 25 cm depth. This extreme increase could be caused by dissolution of the sulphate rich mineral epsomite (MgSO4·7H2O). Sulphur isotopic data was used to validate this hypothesis and demonstrate the occurrence of BSR near the water–sediment interface. This dynamic prevents methane production and release from the anoxic sediment, which is advantageous in the current context of global warming. These results underline that geological context should be considered in future biogeochemical studies of inland lakes with higher potential availability of electron acceptors in the lake bed compared to the water column.

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Section: Organic Matter Inputsmentioning

confidence: 99%

Upside down sulphate dynamics in a saline inland lake

Margalef-Marti

Sébilo

Chanvalon

et al. 2023

Sci Rep

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“…The lake has notable environmental importance and hosts several protection figures (National Hunting Refuge, Wildlife Refuge of International Interest, Zone of Special Protection by the European Birds Directive, etc.). In 2006 it was declared Nature Reserve, as it constitutes an extraordinary important station for European migratory birds (Castañeda et al, 2020).…”

Section: Regional Settingmentioning

confidence: 99%

“…Due to the limitations imposed by pixel size and altimetric accuracy, the previous techniques may become useless for monitoring small/shallow water bodies. In those spaces, the smallest volumetric changes can have significant ecological consequences, especially in the coastal fringe, where ecological gradients and biodiversity achieve their greatest values (Castañeda et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Inferring volumetric changes at a shallow lake from subpixel satellite-derived shorelines

et al. 2022

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“…Morphologically (Figure 1), Gallocanta Lake is structured in three areas (north to south): the Lagunazo (lake) and Lagunazo Grande (main lake), the latter being the point of maximum depth, linked by the strait; and the Lagunazos de Tornos (small lakes), to the south, which constitute a flooded wetland area on the occasions that Lagunazo Grande suffers an overflow [11]. A wide description of habitats is presented by Castañeda et al [25].…”

Section: Study Sitementioning

confidence: 99%

Monitoring Subaquatic Vegetation Using Sentinel-2 Imagery in Gallocanta Lake (Aragón, Spain)

Soria

Ruiz

Morales

2022

Earth

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Remote sensing allows the study of aquatic vegetation cover in shallow lakes from the different spectral responses of the water as the vegetation grows from the bottom toward the surface. In the case of Gallocanta Lake, its seasonality and shallow depth (less than 2 m) allow us to appreciate the variations in the aquatic vegetation with the apparent color. Six common vegetation indices were tested, and the one with the best response was the so-called NDI45, which uses the normalized ratio between the far red (705 nm) and red (665 nm) bands. Our aims are to show the variations in the surface area covered by vegetation at the bottom of the lagoon, its growth and disappearance when drying occurs, and recolonization in a flooding period. The degree of cover reaches 90% at the most favorable times of the year, generally in summer and coinciding with flooding of the lake. The studied period shows how this method can be used for lacustrine habitat detection and highlights the need for field vegetation inventories in future works, which will allow the spectral measurements to be related to the species present.

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Geomorphological control of habitat distribution in an intermittent shallow saline lake, Gallocanta Lake, NE Spain

Cited by 13 publications

References 61 publications

Upside down sulphate dynamics in a saline inland lake

Upside down sulphate dynamics in a saline inland lake

Inferring volumetric changes at a shallow lake from subpixel satellite-derived shorelines

Monitoring Subaquatic Vegetation Using Sentinel-2 Imagery in Gallocanta Lake (Aragón, Spain)

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