Dissolved organic matter dynamics during the spring snowmelt at a boreal river valley mire complex in Northwest Russia

2015 ◽  
Vol 30 (11) ◽  
pp. 1727-1741 ◽  
Author(s):  
Armine Avagyan ◽  
Benjamin R. K. Runkle ◽  
Nina Hennings ◽  
Hannes Haupt ◽  
Tarmo Virtanen ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
River Valley ◽  
Organic Matter Dynamics ◽  
Boreal River ◽  
Spring Snowmelt

Black Sea dissolved organic matter dynamics: Insights from optical analyses

2018 ◽  
Vol 63 (3) ◽  
pp. 1425-1443 ◽  
Author(s):  
Andrew R. Margolin ◽  
Margherita Gonnelli ◽  
Dennis A. Hansell ◽  
Chiara Santinelli
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Black Sea ◽  
Organic Matter Dynamics

scholarly journals Challenges in modelling dissolved organic matter dynamics in agricultural soil using DAISY

2008 ◽  
Vol 40 (6) ◽  
pp. 1506-1518 ◽  
Author(s):  
Birgitte Gjettermann ◽  
Merete Styczen ◽  
Hans Christian B. Hansen ◽  
Finn P. Vinther ◽  
Søren Hansen
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Agricultural Soil ◽  
Organic Matter Dynamics

scholarly journals Dry phase conditions prime wet‐phase dissolved organic matter dynamics in intermittent rivers

2019 ◽  
Vol 64 (5) ◽  
pp. 1966-1979 ◽  
Author(s):  
Rubén Campo ◽  
Rosa Gómez ◽  
Gabriel Singer
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Intermittent Rivers ◽  
Organic Matter Dynamics

scholarly journals Mercury and dissolved organic matter dynamics during snowmelt runoff in a montane watershed, Provo River, Utah, USA

2020 ◽  
Vol 704 ◽  
pp. 135297
Author(s):  
Brian N. Packer ◽  
Gregory T. Carling ◽  
Timothy J. Veverica ◽  
Kerri A. Russell ◽  
Stephen T. Nelson ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Snowmelt Runoff ◽  
Organic Matter Dynamics ◽  
Provo River

scholarly journals Dissolved organic matter dynamics in the oligo/meso-haline zone of wetland-influenced coastal rivers

2014 ◽  
Vol 91 ◽  
pp. 58-69 ◽  
Author(s):  
Nagamitsu Maie ◽  
Satoshi Sekiguchi ◽  
Akira Watanabe ◽  
Kiyoshi Tsutsuki ◽  
Youhei Yamashita ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Coastal Rivers ◽  
Organic Matter Dynamics

scholarly journals Impact of seasonality and anthropogenic impoundments on dissolved organic matter dynamics in the Klamath River (Oregon/California, USA)

2016 ◽  
Vol 121 (7) ◽  
pp. 1946-1958 ◽  
Author(s):  
Allison A. Oliver ◽  
Robert G. M. Spencer ◽  
Michael L. Deas ◽  
Randy A. Dahlgren
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Klamath River ◽  
Organic Matter Dynamics

scholarly journals Flocculation of dissolved organic matter controls the distribution of iron in boreal estuarine sediments

2017 ◽  
Author(s):  
Tom Jilbert ◽  
Eero Asmala ◽  
Christian Schröder ◽  
Rosa Tiihonen ◽  
Jukka-Pekka Myllykangas ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Particulate Material ◽  
Estuarine Sediments ◽  
Anthropogenic Sources ◽  
Diagenetic Processes ◽  
Fe Content ◽  
Estuarine Zone ◽  
Organic Matter Pool ◽  
Boreal River

Abstract. Iron (Fe) plays a key role in sedimentary diagenetic processes in coastal systems, participating in various redox reactions and influencing the burial of organic carbon. Large amounts of Fe enter the marine environment from boreal river catchments associated with dissolved organic matter (DOM). However, the fate of this Fe pool in estuarine sediments has not been extensively studied. Here we show that flocculation of DOM along salinity gradients in an estuary of the northern Baltic Sea efficiently transfers Fe from the dissolved phase into particulate material that accumulates in the sediments. Consequently, we observe a decline with distance offshore in both the Fe content of the sediments and proportion of terrestrial material in the sedimentary organic matter pool. Mössbauer spectroscopy and sequential extractions suggest that large amounts of Fe in sediments of the upper estuarine zone are associated with organic matter as unsulfidized Fe (II) complexes, or present in the form of ferrihydrite, implying a direct transfer of flocculated material to the sediments. Accordingly, the contribution of these components to the total sedimentary Fe declines with distance offshore while other Fe phases become proportionally more important. Sediment core records show that the observed lateral distribution of Fe minerals has remained similar over recent decades, despite variable Fe inputs from anthropogenic sources and eutrophication of the coastal zone. Pore water data suggest that the vertical zonation of diagenetic processes in the sediments is influenced by both the availability of Fe and by bottom water salinity, which controls the availability of sulfate (SO42−).

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