Dissolved organic matter in the Lena River Delta Region, Siberia, Russia ...

Connectivity between the terrestrial and marine environment in the Artic is changing as a result of climate change, influencing both freshwater budgets and the supply of carbon to the sea. This study characterizes the optical properties of dissolved organic matter (DOM) within the Lena Delta region...

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Bibliographic Details
Main Authors: Gonçalves-Araujo, Rafael, Stedmon, Colin A, Heim, Birgit, Dubinenkov, Ivan, Kraberg, Alexandra Claudia, Moiseev, Denis, Bracher, Astrid
Format: Dataset
Language:English
Published: PANGAEA 2015
Subjects:
Event label
Date/Time of event
Latitude of event
Longitude of event
Elevation of event
DEPTH, water
Temperature, water
Salinity
Fluorescence intensity, maximum, DOM
Absorption coefficient, 350 nm
Absorption coefficient, 443 nm
Spectral slope of colored dissolved organic matter absorption
Ratio
Specific ultraviolet absorbance normalized to DOC
Humification index
Biological index
Fluorescence index
Multiple investigations
RU-Land_2013_Lena
AWI Arctic Land Expedition
Climate change
laptev
Laptev Sea
lena delta
lena river
Siberia
Online Access:https://dx.doi.org/10.1594/pangaea.844928
https://doi.pangaea.de/10.1594/PANGAEA.844928
Description
Summary:Connectivity between the terrestrial and marine environment in the Artic is changing as a result of climate change, influencing both freshwater budgets and the supply of carbon to the sea. This study characterizes the optical properties of dissolved organic matter (DOM) within the Lena Delta region and evaluates the behavior of DOM across the fresh water-marine gradient. Six fluorescent components (four humic-like; one marine humic-like; one protein-like) were identified by Parallel Factor Analysis (PARAFAC) with a clear dominance of allochthonous humic-like signals. Colored DOM (CDOM) and dissolved organic carbon (DOC) were highly correlated and had their distribution coupled with hydrographical conditions. Higher DOM concentration and degree of humification were associated with the low salinity waters of the Lena River. Values decreased towards the higher salinity Laptev Sea shelf waters. Results demonstrate different responses of DOM mixing in relation to the vertical structure of the water column, as ... : Supplement to: Gonçalves-Araujo, Rafael; Stedmon, Colin A; Heim, Birgit; Dubinenkov, Ivan; Kraberg, Alexandra Claudia; Moiseev, Denis; Bracher, Astrid (2015): From fresh to marine waters: characterization and fate of dissolved organic matter in the Lena River delta region, Siberia. Frontiers in Marine Science, 2(108), 13 pp ...

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