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  • Tye, Andrew M.British Geol Survey, Nottingham NG12 5GG, England. (författare)

Dissolved inorganic carbon export from rivers of Great Britain : Spatial distribution and potential catchment-scale controls

  • Artikel/kapitelEngelska2022

Förlag, utgivningsår, omfång ...

  • Elsevier,2022
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-498446
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-498446URI
  • https://doi.org/10.1016/j.jhydrol.2022.128677DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Dissolved inorganic carbon (DIC) fluxes from the land to ocean have been quantified for many rivers globally. However, CO2 fluxes to the atmosphere from inland waters are quantitatively significant components of the global carbon cycle that are currently poorly constrained. Understanding, the relative contributions of natural and human-impacted processes on the DIC cycle within catchments may provide a basis for developing improved management strategies to mitigate free CO2 concentrations in rivers and subsequent evasion to the atmosphere. Here, a large, internally consistent dataset collected from 41 catchments across Great Britain (GB), accounting for ∼36% of land area (∼83,997 km2) and representative of national land cover, was used to investigate catchment controls on riverine dissolved inorganic carbon (DIC), bicarbonate (HCO3−) and free CO2 concentrations, fluxes to the coastal sea and annual yields per unit area of catchment. Estimated DIC flux to sea for the survey catchments was 647 kt DIC yr−1 which represented 69% of the total dissolved carbon flux from these catchments. Generally, those catchments with large proportions of carbonate and sedimentary sandstone were found to deliver greater DIC and HCO3− to the ocean. The calculated mean free CO2 yield for survey catchments (i.e. potential CO2 emission to the atmosphere) was 0.56 t C km−2 yr−1. Regression models demonstrated that whilst river DIC (R2 = 0.77) and HCO3− (R2 = 0.77) concentrations are largely explained by the geology of the landmass, along with a negative correlation to annual precipitation, free CO2 concentrations were strongly linked to catchment macronutrient status. Overall, DIC dominates dissolved C inputs to coastal waters, meaning that estuarine carbon dynamics are sensitive to underlying geology and therefore are likely to be reasonably constant. In contrast, potential losses of carbon to the atmosphere via dissolved CO2, which likely constitute a significant fraction of net terrestrial ecosystem production and hence the national carbon budget, may be amenable to greater direct management via altering patterns of land use.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Williamson, Jennifer L.Environm Ctr Wales, UK Ctr Ecol & Hydrol, Deiniol Rd, Bangor LL57 2UW, Gwynedd, Wales. (författare)
  • Jarvie, Helen P.Univ Waterloo, Water Inst, Waterloo, ON, Canada.;Univ Waterloo, Dept Geog & Environm Management, Waterloo, ON, Canada.;UK Ctr Ecol & Hydrol, Benson Lane, Wallingford OX10 8BB, England. (författare)
  • Dise, Nancy B. (författare)
  • Lapworth, Dan J.British Geol Survey, Benson Lane, Wallingford OX10 8BB, England. (författare)
  • Monteith, DonLancaster Environm Ctr, UK Ctr Ecol & Hydrol, Lib Ave, Lancaster LA1 4AP, England. (författare)
  • Sanders, RichardNatl Oceanog Ctr, European Way, Southampton SO14 3ZH, England.;NORCE Norwegian Res Ctr, Janhnebakken 5, N-5007 Bergen, Norway. (författare)
  • Mayor, Daniel J.Natl Oceanog Ctr, European Way, Southampton SO14 3ZH, England. (författare)
  • Bowes, Michael J.UK Ctr Ecol & Hydrol, Benson Lane, Wallingford OX10 8BB, England. (författare)
  • Bowes, MichaelBritish Geol Survey, Nottingham NG12 5GG, England. (författare)
  • Burden, AnnetteEnvironm Ctr Wales, UK Ctr Ecol & Hydrol, Deiniol Rd, Bangor LL57 2UW, Gwynedd, Wales. (författare)
  • Callaghan, NathanEnvironm Ctr Wales, UK Ctr Ecol & Hydrol, Deiniol Rd, Bangor LL57 2UW, Gwynedd, Wales. (författare)
  • Farr, GarethCardiff Univ, British Geol Survey, Main Bldg,Pk Pl, Cardiff CF10 3AT, Wales. (författare)
  • Felgate, Stacey L.Uppsala universitet,Analytisk kemi(Swepub:uu)stafe919 (författare)
  • Gibb, StuartUniv Highlands & Islands, Environm Res Inst, Castle St, Thurso KW14 7JD, Scotland. (författare)
  • Gilbert, Pete J.Univ Highlands & Islands, Environm Res Inst, Castle St, Thurso KW14 7JD, Scotland. (författare)
  • Hargreaves, GeoffNatl Oceanog Ctr, Joseph Proudman Bldg,6 Brownlow St, Liverpool L3 5DA, England. (författare)
  • Keenan, PatrickLancaster Environm Ctr, UK Ctr Ecol & Hydrol, Lib Ave, Lancaster LA1 4AP, England. (författare)
  • Kitidis, VassilisPlymouth Marine Lab, Prospect Pl, Plymouth PL1 3DHM, England. (författare)
  • Jürgens, Monika D.UK Ctr Ecol & Hydrol, Benson Lane, Wallingford OX10 8BB, England. (författare)
  • Martin, AdrianNatl Oceanog Ctr, European Way, Southampton SO14 3ZH, England. (författare)
  • Mounteney, IanBritish Geol Survey, Nottingham NG12 5GG, England. (författare)
  • Nightingale, Philip D.Plymouth Marine Lab, Prospect Pl, Plymouth PL1 3DHM, England. (författare)
  • Pereira, M. Gloria (författare)
  • Olszewska, JustynaUK Ctr Ecol & Hydrol Edinburgh, Penicuik EH26 0QB, Midlothian, Scotland. (författare)
  • Pickard, AmyUK Ctr Ecol & Hydrol Edinburgh, Penicuik EH26 0QB, Midlothian, Scotland. (författare)
  • Rees, Andrew P.Plymouth Marine Lab, Prospect Pl, Plymouth PL1 3DHM, England. (författare)
  • Spears, BryanUK Ctr Ecol & Hydrol Edinburgh, Penicuik EH26 0QB, Midlothian, Scotland. (författare)
  • Stinchcombe, MarkNatl Oceanog Ctr, European Way, Southampton SO14 3ZH, England. (författare)
  • White, Debbie (författare)
  • Williams, Peter (författare)
  • Worrall, FredUniv Durham, Dept Earth Sci, Sci Labs, South Rd, Durham DH1 3LE, England. (författare)
  • Evans, Chris D.Environm Ctr Wales, UK Ctr Ecol & Hydrol, Deiniol Rd, Bangor LL57 2UW, Gwynedd, Wales. (författare)
  • British Geol Survey, Nottingham NG12 5GG, England.Environm Ctr Wales, UK Ctr Ecol & Hydrol, Deiniol Rd, Bangor LL57 2UW, Gwynedd, Wales. (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Hydrology: Elsevier6150022-16941879-2707

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