Controls of the spatial variability of denitrification potential in nontidal floodplains of the Chesapeake Bay watershed, USA

Korol, Alicia R.; Noe, Gregory B.; Ahn, Changwoo

doi:10.1016/j.geoderma.2018.11.015

Cited by 20 publications

(2 citation statements)

References 67 publications

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“…Nutrient deliveries to the Mississippi River and to the Gulf of Mexico are responsible for hypoxic waters in the Gulf and damage to the Gulf ecosystem (Rabalais & Turner, 2019). The prospect that connected floodplains of large rivers draining agricultural areas could provide substantial denitrification has been explored by multiple authors (Hoagland et al., 2019; Korol et al., 2019; Richardson et al., 2019). Although denitrification is a complex process that is influenced by many factors that are highly variable in time and space, a necessary condition in floodplains is inundation or wet soil during the growing season.…”

Section: Discussionmentioning

confidence: 99%

Geomorphic Controls on Floodplain Connectivity, Ecosystem Services, and Sensitivity to Climate Change: An Example From the Lower Missouri River

Jacobson

Bouska

Bulliner

et al. 2022

Water Resources Research

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Floodplains are increasingly recognized for their potential to contribute ecosystem services, including provision of aquatic and terrestrial habitat, nutrient processing, flood-water storage, and biodiversity (Opperman et al., 2009(Opperman et al., , 2010. Floodplains adjacent to large rivers are also highly valued for their agricultural productivity, development opportunities, and recreational potential. In the aftermath of large flood events, scientists and managers have asserted that alternative floodplain-management strategies could better sustain the floodplain and its goods and services (Shadie et al.

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Section: Discussionmentioning

confidence: 99%

Geomorphic Controls on Floodplain Connectivity, Ecosystem Services, and Sensitivity to Climate Change: An Example From the Lower Missouri River

Jacobson

Bouska

Bulliner

et al. 2022

Water Resources Research

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“…In terms of denitrification, the relatively sparse and shot-term observations limits our capability to estimate the carbon and nitrogen recycling in terrestrial ecosystems, especially over wetlands. Since in situ measurements constitute the main source of data, few studies assess N 2 O and CO 2 emissions from denitrification at large scale and are usually limited to field scale or small scale watersheds (Russell et al, 2019;Johnson et al, 2019;Korol et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Denitrification, carbon and nitrogen emissions over the Amazonian wetlands

Guilhen¹,

Bitar²,

Sauvage³

et al. 2020

Preprint

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Abstract. In this paper, we quantify CO2 and N2O emissions from denitrification over the Amazonian wetlands. The study concerns the entire Amazonian wetland ecosystem with a specific focus on three focal locations: the Branco Floodplain, the Madeira Floodplain and the floodplains alongside the Amazon River. We adapted a simple denitrification model to the case of tropical wetlands and forced it by open water surface extent products from the Soil Moisture and Ocean Salinity (SMOS) satellite. A priori model parameters were provided by in situ observations and gauging stations from the HyBAm observatory. Our results show that the denitrification and emissions present a strong cyclic pattern linked to the inundation processes that can be divided into three distinct phases: activation &#8211; stabilization &#8211; deactivation. We quantify the average yearly denitrification and associated emissions of CO2 and N2O over the entire watershed at 17.8&#8201;kgN/ha/yr, 0.37&#8201;gC/m2/yr and 0.18&#8201;gN/m2/yr respectively. When compared to local observations, it was found that the CO2 emissions accounted for 0.01&#8201;% of the integrated ecosystem, which emphasis the fact that minor changes to the land cover may induce strong impacts to the Amazonian carbon budget. Our results are quite consistent with the state of the art global nitrogen models with a positive bias of 28&#8201;%. When compared to other wetlands in different pedo-climatic environments we found that the Amazonian wetlands have close emissions of N2O to the tropical Congo wetlands and lower emissions than the tropical and temperate anthropogenic wetlands of the Garonne river, the Rhine river, and south-eastern Asia rice paddies. In summary our paper shows that a data driven approach can be successfully applied to quantify N2O and CO2 fluxes associated with denitrification over the Amazon basin. In the future, the use of higher resolution remote sensing product from sensor fusion or new sensors like the SWOT mission will permit the transposition to other large scale watersheds in tropical environment.

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An interdisciplinary overview of levee setback benefits: Supporting spatial planning and implementation of riverine nature‐based solutions

van Rees,

Chambers,

Catalano

et al. 2024

WIREs Water

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Nature‐based solutions (NbS, and related concepts like natural infrastructure, Ecosystem‐based Adaptation, and green infrastructure) are increasingly recognized as multi‐benefit strategies for addressing the critical sustainability challenges of the Anthropocene, including the climate emergency and biodiversity crisis. Mainstreaming NbS in professional practice requires strategic, landscape‐level planning integrating multiple sources of benefits and their synergies and trade‐offs. Levee setbacks (LS) are among the best‐studied riverine NbS with recognized benefits for flood risk management, drought resilience, water quality management, recreational opportunities, and ecological restoration for biodiversity. Although awareness of the multifarious benefits of LS as forms of Natural Capital is growing, implementation remains ad‐hoc and opportunistic. To address this critical implementation gap for one major example of NbS, we review and synthesize literature across diverse disciplines to provide an overview of the primary social, economic, and ecological mechanisms that affect the co‐benefit delivery of LS projects. Next, to make this information relevant to NbS practitioners, we link these mechanisms to spatial metrics that can be used to approximate the relative magnitude of project benefits and costs across these mechanisms. Finally, we highlight examples of key synergies and trade‐offs among benefits that should be considered for LS planning. This synthetic approach is intended to familiarize readers with the diverse potential benefits of LS, and provide an understanding of how to select and prioritize potential sites for further study and implementation. Synergies and trade‐offs among important benefit drivers abound, and social equity concerns will be paramount in ensuring the successful implementation of LS and other NbS in the future.This article is categorized under: Engineering Water > Sustainable Engineering of Water Engineering Water > Planning Water Water and Life > Nature of Freshwater Ecosystems

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Controls of the spatial variability of denitrification potential in nontidal floodplains of the Chesapeake Bay watershed, USA

Cited by 20 publications

References 67 publications

Geomorphic Controls on Floodplain Connectivity, Ecosystem Services, and Sensitivity to Climate Change: An Example From the Lower Missouri River

Geomorphic Controls on Floodplain Connectivity, Ecosystem Services, and Sensitivity to Climate Change: An Example From the Lower Missouri River

Denitrification, carbon and nitrogen emissions over the Amazonian wetlands

An interdisciplinary overview of levee setback benefits: Supporting spatial planning and implementation of riverine nature‐based solutions

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