Influence of land use changes on submarine groundwater discharge

Rufí-Salís, Martí; García-Orellana, Jordi; Cantero, Gerard; Castillo, Jordi; Hierro, A.; Rieradevall, Joan; Plaza, Joan Bach i

doi:10.1088/2515-7620/ab1695

Cited by 15 publications

(12 citation statements)

References 19 publications

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“…It can be expected that the type of land use and associated soils affect the quantity and quality of water seeping into groundwater and eventually reaching coastal discharge spots. However, the extent of this relationship is unknown (Rufí-Salís et al, 2019).…”

Section: Impacts Of Land Use and Cover On Other Factorsmentioning

confidence: 99%

Human impacts and their interactions in the Baltic Sea region

et al. 2022

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Abstract. Coastal environments, in particular heavily populated semi-enclosed marginal seas and coasts like the Baltic Sea region, are strongly affected by human activities. A multitude of human impacts, including climate change, affect the different compartments of the environment, and these effects interact with each other. As part of the Baltic Earth Assessment Reports (BEAR), we present an inventory and discussion of different human-induced factors and processes affecting the environment of the Baltic Sea region, and their interrelations. Some are naturally occurring and modified by human activities (i.e. climate change, coastal processes, hypoxia, acidification, submarine groundwater discharges, marine ecosystems, non-indigenous species, land use and land cover), some are completely human-induced (i.e. agriculture, aquaculture, fisheries, river regulations, offshore wind farms, shipping, chemical contamination, dumped warfare agents, marine litter and microplastics, tourism, and coastal management), and they are all interrelated to different degrees. We present a general description and analysis of the state of knowledge on these interrelations. Our main insight is that climate change has an overarching, integrating impact on all of the other factors and can be interpreted as a background effect, which has different implications for the other factors. Impacts on the environment and the human sphere can be roughly allocated to anthropogenic drivers such as food production, energy production, transport, industry and economy. The findings from this inventory of available information and analysis of the different factors and their interactions in the Baltic Sea region can largely be transferred to other comparable marginal and coastal seas in the world.

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Section: Impacts Of Land Use and Cover On Other Factorsmentioning

confidence: 99%

Human impacts and their interactions in the Baltic Sea region

et al. 2022

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“…The county has a population density of ca. 1100 habitants per square kilometer, and is highly anthropized, with 15 % agricultural and 30 % urban land use (Rufí-Salís et al, 2019). The geomorphology of the area is structurally associated with the fracturing and sinking of blocks (NW-SE direction), which developed in a set of stream valleys (Catalan Water Agency, 2010).…”

Section: Study Sitementioning

confidence: 99%

Extreme precipitation events induce high fluxes of groundwater and associated nutrients to coastal ocean

Diego-Feliu¹,

Rodellas²,

Alorda-Kleinglass³

et al. 2022

Hydrol. Earth Syst. Sci.

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Abstract. Current studies of submarine groundwater discharge (SGD) are commonly conducted under aquifer baseflow conditions, neglecting the influence of episodic events that can significantly increase the supply of nutrients and water. This limits our understanding of the social, biogeochemical, and ecological impacts of SGD. In this study, we evaluated the influence of an extreme precipitation event (EPE) on the magnitude of SGD. To do so, three seawater sampling campaigns were performed at a Mediterranean ephemeral stream-dominated basin after an EPE (∼ 90 mm in few hours) and in baseflow conditions. Results indicate that the groundwater flows after the EPE were 1 order of magnitude higher than those in baseflow conditions. The SGD induced by EPEs, which only take place a few days per year, represented up to one third of the annual discharge of groundwater and associated nutrients at the study site. This work accentuates the need to account for episodic increases in the supply of water and nutrients when aiming to provide reliable annual SGD estimates, particularly in the current context of climate change, since the occurrence of such events is expected to increase worldwide.

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“…Research on SGD is no exception to this trend and, in recent decades, several studies have evaluated the key factors contributing to groundwater flows discharging into the ocean. Some examples of SGD research linked to climate change include; understanding sea-level and/or tidal controls on SGD (Gonneea et al, 2013;Wilson et al, 2015); the influence of land-use changes (Rufí-Salís et al, 2019); the relationship to increasing seawater intrusion (Werner et al, 2013); and the fate and evolution of nutrients in groundwater (Beusen et al, 2013;Van Meter et al, 2018;Tait et al, 2014).…”

Section: Climate Changementioning

confidence: 99%

Extreme precipitation events induce high fluxes of groundwater and associated nutrients to the coastal ocean

Diego-Feliu

Rodellas

Alorda-Kleinglass

et al. 2022

Preprint

Self Cite

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Abstract. Current Submarine Groundwater Discharge (SGD) studies are commonly conducted under aquifer baseflow conditions, neglecting the influence of episodic events that can significantly increase the supply of nutrients and water. This limits our understanding of the social, biogeochemical, and ecological impacts of SGD. In this study, we evaluated the influence of an extreme precipitation event (EPE) on the magnitude of both the terrestrial and marine components of SGD. To do so, three seawater sampling campaigns were performed at a Mediterranean ephemeral stream-dominated basin after an extreme precipitation event (~90 mm in few hours) and in baseflow conditions. Results indicate that the groundwater flows of terrestrial and marine SGD after the extreme precipitation event were 1 order of magnitude higher than those in baseflow conditions. SGD induced by extreme precipitation events, which only take place a few days per year, represented up to one third of the annual discharge of groundwater and associated nutrients at the study site. This work accentuates the need to account for episodic increases in the supply of water and nutrients when aiming at providing reliable annual SGD estimates, particularly in the current context of climate change, since the occurrence of such events is expected to increase worldwide.

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Influence of land use changes on submarine groundwater discharge

Cited by 15 publications

References 19 publications

Human impacts and their interactions in the Baltic Sea region

Human impacts and their interactions in the Baltic Sea region

Extreme precipitation events induce high fluxes of groundwater and associated nutrients to coastal ocean

Extreme precipitation events induce high fluxes of groundwater and associated nutrients to the coastal ocean

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