Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina

Pisano, María Florencia; D'Amico, Gabriela; Ramos, Nicolás Andrés; Pommarés, Nicole Nadín; Fucks, Enrique

doi:10.1016/j.jsames.2019.102468

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…Emblematic to these waters is the native fish, the pejerrey (Odontesthes bonariensis), who is threated by increasing eutrophication, cyanobacterial blooms, anoxia, loss of microenvironment where they grow (Kopprio et al 2010), and now by climate change. Changes in precipitation and evaporation produce dramatic changes in the morphology, surface area and depth of these shallow lakes, with repercussions in their physicochemical and biological characteristics (Quirós et al 2002;Quirós 2005;Bohn et al 2014Bohn et al , 2016Pisano et al 2020). However, despite the importance of the morphometry on the dynamic of these waterbodies, bathymetric and morphometric studies in these lakes are rare.…”

Section: Introductionmentioning

confidence: 99%

The effects of extreme drought events on the morphometry of shallow lakes: Implications for sediment resuspension and littoral and pelagic zone distribution

Seitz

Scordo

Vitale

et al. 2020

Journal of South American Earth Sciences

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Section: Introductionmentioning

confidence: 99%

The effects of extreme drought events on the morphometry of shallow lakes: Implications for sediment resuspension and littoral and pelagic zone distribution

Seitz

Scordo

Vitale

et al. 2020

Journal of South American Earth Sciences

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“…Surface water extent dynamics from three periods of continuous Landsat time series; subregional differences across Argentine plains Studies regarding the spatiotemporal variability of lakes in this region were usually at the local scale in a specific lake or at basin level (Canziani et al, 2019;Maestri et al, 2019;Zunino et al, 2019;Pisano et al, 2020;Solana et al, 2021). Few works study the evolution of the physical characteristics of the lagoons concerning climate variability at the regional level.…”

Section: Introductionmentioning

confidence: 99%

Surface water extent dynamics from three periods of continuous Landsat time series; subregional differences across Argentine plains

Aliaga

Perillo

2021

Rev. Teledetec.

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The Pampean region in Argentina is an extensive plain characterized by abundant shallow lakes that fulfill many environmental, ecological, and social functions. This study aims to detect the multiannual lake area changes in this region during 2001-2009 using remote sensing, including lakes as small as ≥10,000 m2 or 1 ha. Landsat scenes of the wet (2008-2009), normal (2006), and dry (2008-2009) seasons were obtained, and using remote sensing techniques, the number and area of shallow lakes were calculated. The spatiotemporal variation of shallow lakes was studied in different climate periods in eight singular subregions. Spatial associations between annual precipitation and lake number and area were analyzed through the development of a Geographic Information System (GIS) at a subregional scale. During the study period the total lake area in the Pampean region decreased by 5257.39 km2 (62 %), but each subregion showed different responses to climatic events. In seven of them, the differences between climate periods prove to be statistically significant (P>0.01). The relationship between precipitation and lake number and area revealed the domain of positive association. We conclude that climate factors play a dominant role in lake changes across the Pampean plains. However, other factors such as origin, topographic and edaphic characteristics intensify or mitigate changes in surface hydrology.

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Plankton as an Evaluation Tool for Ecosystem Conservation: A Study Involving Different Habitats Associated With the Salado River in the Pampa Region of Argentina

Alvarez,

Solari,

Küppers

et al. 2024

Aquatic Conservation

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Freshwater biodiversity is declining sharply. The conservation of these biodiverse habitats has generally depended on their designation as protected areas, but specific groups such as plankton tend to be overlooked. The Salado River (Argentina) constitutes a highly characteristic morphologic feature of the pampas, having a basin of 150,000 km2. The Las Flores system, particularly, is key in the development of the river, and the presence of two tributaries adds landscape heterogeneity with habitats such as shallow lakes, backwater ponds and wetlands. Our aim in this work was thus to evaluate the Salado River conservation status by measuring the specific richness of its planktonic community in order to argue for the Salado's establishment as a protected reserve. An analysis of the phytoplankton and zooplankton assemblages after several years of sampling in the river, streams and backwater ponds indicated that habitat heterogeneity increased the diversity of the region and that sites such as backwater ponds or streams were critical for the functioning of the river system as a whole through adding particular species or acting as species reservoirs. This supports habitat fragmentation in the area, which combined with environmental heterogeneity contributed to high ß diversity values. However, such separation also involves a trade‐off because prolonged isolation between subsystems can result in net species loss. Finally, the present work focused on the significance of biodiversity at the landscape level, with planktons as a model for the conservation of a principal site in one of the main rivers of Argentina.

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Factors that control the seasonal dynamics of the shallow lakes in the Pampean region, Buenos Aires, Argentina

Cited by 8 publications

References 16 publications

The effects of extreme drought events on the morphometry of shallow lakes: Implications for sediment resuspension and littoral and pelagic zone distribution

The effects of extreme drought events on the morphometry of shallow lakes: Implications for sediment resuspension and littoral and pelagic zone distribution

Surface water extent dynamics from three periods of continuous Landsat time series; subregional differences across Argentine plains

Plankton as an Evaluation Tool for Ecosystem Conservation: A Study Involving Different Habitats Associated With the Salado River in the Pampa Region of Argentina

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