Biogeochemical value of managed realignment, Humber estuary, UK

Andrews, Julian E.; Burgess, Diane; Cave, Rachel; Coombes, Emma; Jickells, Tim; Parkes, David; Turner, R. Kerry

doi:10.1016/j.scitotenv.2006.08.021

Cited by 68 publications

(39 citation statements)

References 39 publications

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“…Overall these decay mechanisms can serve as an intermediate ecosystem service; for example the microbially-driven denitrification reaction uses the dissolved nutrient compound nitrate in seawater to help oxidise organic matter (e.g. see Bianchi 2007 ), a reaction that consumes the nitrate, acting as a natural 'waste treatment' process, that helps improve water quality (Seitzinger et al 2006 ;Andrews et al 2006 ;Turner et al 2008 ). However, this reaction also produces a small but signifi cant quantity of the potent greenhouse gas nitrous oxide (Andrews et al 2006 ;Middelburg and Levin 2009 ;Jickells and Weston 2011 ;Adams et al 2012 ), which through its role in global warming is a disbenefi t rather than 'a service'.…”

Section: Carbon Stock and Flows: An Analysis Of The Organicmentioning

confidence: 99%

“…In the past, the estuary has been subject to major land claim which has denuded the intertidal areas. Most of its intertidal area has been lost (about 90 %), which has greatly reduced the capacity for the storage and processing of carbon, nutrients and of the abundant contaminants in the estuary (Jickells et al 2000 ;Andrews et al 2006 ;McLusky and Elliott 2004 ).…”

Section: Case Study: Blue Carbon Valuation In the Ukmentioning

confidence: 99%

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Luisetti

Turner

Andrews

et al. 2015

Studies in Ecological Economics

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Section: Carbon Stock and Flows: An Analysis Of The Organicmentioning

confidence: 99%

Section: Case Study: Blue Carbon Valuation In the Ukmentioning

confidence: 99%

Why Value ‘Blue Carbon’?

Luisetti

Turner

Andrews

et al. 2015

Studies in Ecological Economics

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“…For instance in the Humber estuary (UK), organic N burial is estimated to be 216 tonnes annually of the 57 400 tonnes of the annual total N load. Th e intertidal area of the Humber also enhances N processing by denitrifi cation of about 997 tonnes of N. Increasing these intertidal areas by management for coastal defences could signifi cantly increase this N retention within the estuary (Andrews et al ., 2006 ;Jickells, 2006 ). Th e extent of processing of N r within estuaries therefore depends on a variety of factors such as oxygen status (particularly for processes involving redox change such as cycling of ammonia/ammonium and production of N 2 O and N 2 ) and light climate for both benthic and water column photosynthesis.…”

Section: Physical and Biogeochemical Processes In Estuarine Systemsmentioning

confidence: 99%

“…Eutrophication processes do not occur in isolation but rather in parallel with other global change pressures including changing coastal management (Andrews et al ., 2006 ) and climate change, a process that has been shown for example to have caused major changes in plankton throughout the North Sea and Europe (Beaugrand et al ., 2002 ). When assessing the impact of eutrophication on organisms and species, climate change related changes and impacts on ecosystems have to be taken into account.…”

Section: Link To Ecosystem Functions and Functioningmentioning

confidence: 99%

Nitrogen processes in coastal and marine ecosystems

Voß

Baker

Bange³

et al. 2011

The European Nitrogen Assessment

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“…[1][2][3][4] Because they are largely influenced by hydrodynamic processes (waves, currents, and tides), estuaries distribute these elements and determine whether the system is a retainer or an exporter. 5 Several studies have addressed the chemical composition and transport of suspended particulate matter (SPM; ≥ 0.45 µm) from estuarine regions to the adjacent coastal zones, mainly to quantify the continental contribution to the oceans.…”

Section: Introductionmentioning

confidence: 99%

Geoquímica do material particulado em suspensão em um sistema estuarino tropical, sudeste do Brasil

Monteiro¹,

Sá²,

Neto³

2017

Quim. Nova

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The aim of this study is to assess the variation of the geochemistry of suspended particulate matter (SPM) in the tropical estuarine system composed of the adjacent Piraquê-Açu and Piraquê-Mirim (ES) rivers using SPM sampled with sediment traps (45 µm mesh) installed in the drainage channels. We collected SPM during different tidal stages and seasonal periods and analysed the metals using inductively coupled plasma mass spectrometry according to EPA 3051A, the mineralogy using X-ray diffraction, the particle size using laser ray diffraction, and organic matter (OM) using calcination. The traps collected enough SPM to perform analyses for each sampling period. The SPM consists of silt size particles, and the percentage of OM is between 20 and 40%. The particles are dominated by kaolinite and quartz, and gibbsite, haematite, goethite, and pyrite are also present. These materials are found in the Barreiras Formation, through which the drainage system cuts. The metal concentrations were higher in the summer: Al (3208.32 g kg ). The Piraquê-Açu River had higher metal concentrations than the Piraquê-Mirim River, and the geochemical indices of both rivers indicate that they naturally contribute to the estuarine system of the Piraquê-Açu and Piraquê-Mirim rivers (SEPAPM). However, anthropic interferences influence these indices at the confluence of the two channels.Keywords: sediment trap; metals; mineralogy; Piraquê-Açu. INTRODUCTIONEstuaries are transitional environments that act as biogeochemical filters that retain dissolved and particulate material, including pollutants.1-4 Because they are largely influenced by hydrodynamic processes (waves, currents, and tides), estuaries distribute these elements and determine whether the system is a retainer or an exporter.5 Several studies have addressed the chemical composition and transport of suspended particulate matter (SPM; ≥ 0.45 µm) from estuarine regions to the adjacent coastal zones, mainly to quantify the continental contribution to the oceans. [6][7][8][9][10][11] However, few studies have been conducted in estuaries located in small and medium river basins in tropical regions, especially in those where human impacts are not yet evident. Understanding the geochemistry of SPM and the processes that influence it in estuarine systems has become a challenge when considering conditioning parameters such as rainfall, river discharge, the concentrations of major and trace elements and the physicochemical variables that may modify the geochemical behaviour of the SPM.To address these issues, the estuarine system of the Piraquê-Açu and Piraquê-Mirim rivers (SEPAPM) was studied to 1) evaluate if the geochemistry of the SPM of these two adjacent fluvial channels with different drainages varies 12,13 and 2) test if a sediment trap can be used to collect SPM considering the difficulty of sampling SPM with conventional methods, which require filtering many litres of water to acquire sufficient material for the geochemical analysis. Study areaThe SEPAPM is located in the municipa...

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Biogeochemical value of managed realignment, Humber estuary, UK

Cited by 68 publications

References 39 publications

Why Value ‘Blue Carbon’?

Why Value ‘Blue Carbon’?

Nitrogen processes in coastal and marine ecosystems

Geoquímica do material particulado em suspensão em um sistema estuarino tropical, sudeste do Brasil

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