Stormwater Runoff and Tidal Flooding Transform Dissolved Organic Matter Composition and Increase Bioavailability in Urban Coastal Ecosystems

Smith, Matthew A.; Kominoski, John S.; Gaiser, Evelyn E.; Price, René M.; Troxler, Tiffany G.

doi:10.1029/2020jg006146

Cited by 26 publications

(14 citation statements)

References 85 publications

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“…76,77 Component 5 (C5 Ex/Em 250/460 nm) matched with seven components representing “terrestrial humic-like” fluorescence in a range from 95–96% OpenFluor similarity score. 78–84…”

Section: Resultsmentioning

confidence: 99%

“…76,77 Component 5 (C5 Ex/Em 250/460 nm) matched with seven components representing "terrestrial humic-like" uorescence in a range from 95-96% OpenFluor similarity score. [78][79][80][81][82][83][84] Contributions of each component in all samples are reported in Table S3. † Principal component analysis shows the relationship between each component and the samples (Fig.…”

Section: Optical Characterization Of Hopsmentioning

confidence: 99%

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Photochemical formation of water-soluble oxyPAHs, naphthenic acids, and other hydrocarbon oxidation products from Cook Inlet, Alaska crude oil and diesel in simulated seawater spills

Harsha

Redman

Wesolowski

et al. 2023

Environ. Sci.: Adv.

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“…76,77 Component 5 (C5 Ex/Em 250/460 nm) matched with seven components representing “terrestrial humic-like” fluorescence in a range from 95–96% OpenFluor similarity score. 78–84…”

Section: Resultsmentioning

confidence: 99%

Section: Optical Characterization Of Hopsmentioning

confidence: 99%

Photochemical formation of water-soluble oxyPAHs, naphthenic acids, and other hydrocarbon oxidation products from Cook Inlet, Alaska crude oil and diesel in simulated seawater spills

Harsha

Redman

Wesolowski

et al. 2023

Environ. Sci.: Adv.

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“…In addition, DON in the rain that recharges surficial aquifers is reported to be 20% to 75% bioavailable (Seitzinger and Sanders, 1999). Stormwater runoff and tidal changes were found to increase the bioavailability of DOM with predominant inputs of humic-like compounds in the wet season and protein-like components in the dry season (Smith et al, 2021). In this study, the negative surge was linked to an increase in the humic-like compounds, which are predominant in the nearshore groundwater but were also found to increase in Nueces Bay following the 2015 flooding event (Douglas et al, 2021a).…”

Section: Hydrologic Impacts On Dissolved Organic Matter Compositionmentioning

confidence: 99%

Organic matter composition and inorganic nitrogen response to Hurricane Harvey’s negative storm surge in Corpus Christi Bay, Texas

et al. 2022

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Extreme weather events, such as tropical storms and hurricanes, are known to deliver large amounts of freshwater (surface runoff) and associated inorganic and organic nutrients to estuaries and the coastal ocean, affecting water quality and nutrient budgets. However, while Hurricane Harvey produced an unprecedented 1,000-year flood event in 2017 that inundated areas north of the landfall, like the Houston/Galveston region (Texas, United States), the impact on the Corpus Christi area, south of the landfall, was an intermittent negative surge (∼0.5 m below mean sea level (MSL)), caused by the southerly direction of winds and limited freshwater inflows. With the use of pre- and post-landfall surface-water, porewater, and groundwater nutrient measurements and dissolved organic matter (DOM) molecular characterization analyses, this study assessed the influence of negative storm surge on groundwater–surface water interactions and nutrient composition. Within 2 weeks following the first landfall, the forms and inputs of inorganic and organic nutrients fluctuated significantly nearshore Corpus Christi Bay. Sudden drops in sea level were correlated with pulses of NH4+ and disproportionately more dissolved organic carbon (DOC) than dissolved organic nitrogen (DON), likely from a carbon-rich groundwater or benthic source with slightly lower labile characteristics. Recovery to MSL drove higher proportions of nitrogenous DOM and lower dissolved inorganic nitrogen (DIN) inputs. An increased presence of sulfurized DOM derived from anaerobic microbial processing of organic matter mineralization in marine sediments post-landfall was facilitated by enhanced groundwater inputs and flushing of porewater due to considerable drops in sea level and steepening hydraulic gradients toward the coast. The induced pulses of higher groundwater advective fluxes are also hypothesized to have intermittently enhanced flushing of anoxic DIN and biodegraded DOM from porewater and groundwater and suggested that dynamic hurricane-induced negative surge events affect net nutrient budgets in estuarine and coastal seas.

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“…Understanding the potential for groundwater tables to rise above the ground surface is important as Smith et al (2021) determined that rising groundwater tables can carry contaminants from below ground septic systems to surface waters.…”

Section: Wastewater and Pollutantsmentioning

confidence: 99%

Compound flood modelling framework for rainfall-groundwater interactions

Peña

Nardi

Melesse

et al. 2021

Preprint

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Abstract. Compound floods are an active area of research where the complex interaction between pluvial, fluvial, coastal or groundwater flooding are analyzed. A number of studies have simulated the compound flooding impacts of precipitation, river discharge and storm surge variables with different numerical models and linking techniques. However, groundwater flooding is often neglected in flood risk assessments due to its sporadic frequency - as most regions have water tables sufficiently low that do not exacerbate flooding conditions -, isolated impacts and considerably less severity in respect to other types of flooding. This paper presents a physically-based, loosely-coupled modelling framework using FLO-2D and MODFLOW-2005 that is capable to simulate surface-subsurface water interactions to represent compound flooding events in North Miami. FLO-2D, responsible of the surface hydrology and infiltration processes, transfers the infiltration volume as recharge to MODFLOW-2005 until the soil absorption capacity is exceeded, while MODFLOW-2005 return exchange flow to the surface when groundwater heads are higher than the surface depth. The model calibration is based on three short-lived storm events that as individual processes represent minimum flooding conditions but in combination with pre-existing high-water table levels results in widespread flooding across the study area. Understanding groundwater flood risk is of particular interest to low-elevation coastal karst environments as the sudden emergence of the water table at ground surface can result in social disruption, adverse effects to essential services and damage infrastructure. Results are validated using FEMA’s severe repetitive loss (SRL) property records and crowdsourced data. Further research should assess the exacerbated impacts of high tides and sea level rise on water tables under current and future climate projections.

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Stormwater Runoff and Tidal Flooding Transform Dissolved Organic Matter Composition and Increase Bioavailability in Urban Coastal Ecosystems

Cited by 26 publications

References 85 publications

Photochemical formation of water-soluble oxyPAHs, naphthenic acids, and other hydrocarbon oxidation products from Cook Inlet, Alaska crude oil and diesel in simulated seawater spills

Photochemical formation of water-soluble oxyPAHs, naphthenic acids, and other hydrocarbon oxidation products from Cook Inlet, Alaska crude oil and diesel in simulated seawater spills

Organic matter composition and inorganic nitrogen response to Hurricane Harvey’s negative storm surge in Corpus Christi Bay, Texas

Compound flood modelling framework for rainfall-groundwater interactions

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