<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The objective of this study was to examine dissolved organic carbon (DOC) concentration and specific ultraviolet absorbance (SUVA) changes in porewaters that occur over a small scale (cm) in the hyporheic zone (HZ) of a lowland stream in the Knyszynska Forest in northeast Poland. Hyporheic zone porewaters were sampled at different depths of 10, 30, 50, 70 cm at two study sites with different sediment material. The results showed significant differences in DOC concentrations between the upper and lower stream HZ. The current results indicate that small lowland sediments provide both a source and a sink of DOC for stream water, depending on the river course. The higher DOC level observed in the hyporheic zone suggests that porewater can be an autonomic site of biogeochemical changes of dissolved organic matter, which is very clear in the SUVA fluctuations.</p>
</abstract>

The objective of this study was to examine dissolved organic carbon (DOC) concentration and specific ultraviolet absorbance (SUVA) changes in porewaters that occur over a small scale (cm) in the hyporheic zone (HZ) of a lowland stream in the Knyszynska Forest in northeast Poland. Hyporheic zone porewaters were sampled at different depths of 10, 30, 50, 70 cm at two study sites with different sediment material. The results showed significant differences in DOC concentrations between the upper and lower stream HZ. The current results indicate that small lowland sediments provide both a source and a sink of DOC for stream water, depending on the river course. The higher DOC level observed in the hyporheic zone suggests that porewater can be an autonomic site of biogeochemical changes of dissolved organic matter, which is very clear in the SUVA fluctuations.

Dissolved organic matter transformation in the hyporheic zone of a small lowland river

Department of Hydrobiology, Institute of Biology

Oceanological and Hydrobiological Studies

The objective of this study was to examine dissolved organic carbon (DOC) concentration and specific ultraviolet absorbance (SUVA) changes in porewaters that...

Dissolved organic matter transformation in the hyporheic zone of a small lowland river

Publié en ligne: 30 juin 2010

Pages: 97 - 103

DOI: https://doi.org/10.2478/v10009-010-0021-9

Mots clés
dissolved organic carbon, SUVA, hyporheic zone, lowland river

This content is open access.

Dissolved organic matter transformation in the hyporheic zone of a small lowland river

Publié en ligne: 30 juin 2010

Pages: 97 - 103

DOI: https://doi.org/10.2478/v10009-010-0021-9

Mots clésdissolved organic carbon, SUVA, hyporheic zone, lowland river

This content is open access.

Mots clés
dissolved organic carbon, SUVA, hyporheic zone, lowland river