Aeration Effects on the Partitioning of a PCB to Anoxic Estuarine Sediment Pore Water Dissolved Organic Matter

1999 ◽  
Vol 33 (9) ◽  
pp. 1388-1397 ◽  
Author(s):  
Joel A. Pedersen ◽  
Christopher J. Gabelich ◽  
Chen-Hung Lin ◽  
I. H. Suffet
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pore Water ◽  
Estuarine Sediment ◽  
Sediment Pore Water

scholarly journals Spectral Characterization of Dissolved Organic Matter in Seawater and Sediment Pore Water from the Arctic Fjords (West Svalbard) in Summer

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 202
Author(s):  
Meilian Chen ◽  
Ji-Hoon Kim ◽  
Sungwook Hong ◽  
Yun Kyung Lee ◽  
Moo Hee Kang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pore Water ◽  
Phytoplankton Bloom ◽  
Ocean Surface ◽  
The Arctic ◽  
Sediment Pore Water ◽  
Ice Edge ◽  
Accumulation Trend ◽  
Arctic Fjords

Fjords in the high Arctic, as aquatic critical zones at the interface of land-ocean continuum, are undergoing rapid changes due to glacier retreat and climate warming. Yet, little is known about the biogeochemical processes in the Arctic fjords. We measured the nutrients and the optical properties of dissolved organic matter (DOM) in both seawater and sediment pore water, along with the remote sensing data of the ocean surface, from three West Svalbard fjords. A cross-fjord comparison of fluorescence fingerprints together with downcore trends of salinity, Cl−, and PO43− revealed higher impact of terrestrial inputs (fluorescence index: ~1.2–1.5 in seawaters) and glaciofluvial runoffs (salinity: ~31.4 ± 2.4 psu in pore waters) to the southern fjord of Hornsund as compared to the northern fjords of Isfjorden and Van Mijenfjorden, tallying with heavier annual runoff to the southern fjord of Hornsund. Extremely high levels of protein-like fluorescence (up to ~4.5 RU) were observed at the partially sea ice-covered fjords in summer, in line with near-ubiquity ice-edge blooms observed in the Arctic. The results reflect an ongoing or post-phytoplankton bloom, which is also supported by the higher levels of chlorophyll a fluorescence at the ocean surface, the very high apparent oxygen utilization through the water column, and the nutrient drawdown at the ocean surface. Meanwhile, a characteristic elongated fluorescence fingerprint was observed in the fjords, presumably produced by ice-edge blooms in the Arctic ecosystems. Furthermore, alkalinity and the humic-like peaks showed a general downcore accumulation trend, which implies the production of humic-like DOM via a biological pathway also in the glaciomarine sediments from the Arctic fjords.

A 10,000 year record of sediment pore-water dissolved organic matter characteristics from Lake Peipsi as revealed by HPSEC

2010 ◽  
Vol 26 (sup2) ◽  
pp. 13-24 ◽  
Author(s):  
Natalja Makarõtševa ◽  
Viia Lepane ◽  
Tiiu Alliksaar ◽  
Atko Heinsalu
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pore Water ◽  
Lake Peipsi ◽  
Sediment Pore Water

Environmental characteristics and changes of sediment pore water dissolved organic matter in four Chinese lakes

2017 ◽  
Vol 25 (3) ◽  
pp. 2783-2804 ◽  
Author(s):  
Khan M. G. Mostofa ◽  
Wen Li ◽  
Fengchang Wu ◽  
Cong-Qiang Liu ◽  
Haiqing Liao ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pore Water ◽  
Sediment Pore Water ◽  
Environmental Characteristics

scholarly journals Sources and composition of sediment pore-water dissolved organic matter in prairie pothole lakes

2013 ◽  
Vol 58 (3) ◽  
pp. 1136-1146 ◽  
Author(s):  
Kate L. Ziegelgruber ◽  
Teng Zeng ◽  
William A. Arnold ◽  
Yu-Ping Chin
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pore Water ◽  
Prairie Pothole ◽  
Sediment Pore Water

Extensive processing of sediment pore water dissolved organic matter during anoxic incubation as observed by high-field mass spectrometry (FTICR-MS)

2018 ◽  
Vol 129 ◽  
pp. 252-263 ◽  
Author(s):  
Juliana Valle ◽  
Michael Gonsior ◽  
Mourad Harir ◽  
Alex Enrich-Prast ◽  
Philippe Schmitt-Kopplin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pore Water ◽  
High Field ◽  
Field Mass ◽  
Sediment Pore Water ◽  
Fticr Ms
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