Carbon, nitrogen, and sulfur isotope changes and hydro-geological processes in a saline lake chain

Hideyuki Doi, Eisuke Kikuchi, Chitoshi Mizota, Nobuya Satoh, Shuichi Shikano, Natalia Yurlova, Elena Yadrenkina, Elena Zuykova

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The ionic concentrations,conductivity and pH of water in the Lake Chany complex in West Siberian Russia change from the mouth to the interior of the lake. This difference is indicative of marked evaporation of lake water from the closed water body system in the dry climate of Western Siberia. The carbon isotope composition of particulate organic matter (POM, composed mainly of phytoplankton) clearly changes, along with the pH of the water, reflecting the concentration of dissolved CO 2. Carbon and nitrogen isotope signatures of Chironomus plumosus larvae, a benthic invertebrate that may feed on bulk lake sediment, systematically increase, along with those of POM and sediment organic matter (SOM), through the lake chain. Both sulfate-sulfur and nitrogen isotope compositions of the POM and SOM increase with distance from the estuary into the Lake Chany complex. Heavier sulfur and nitrogen isotope recycling from the sediment, caused by microbial sulfate reduction and denitrification, respectively, may have led to the increased sulfate-sulfur and nitrogen isotope compositions of the POM and SOM.

Original languageEnglish
Pages (from-to)225-235
Number of pages11
JournalHydrobiologia
Volume529
Issue number1
DOIs
Publication statusPublished - 2004 Nov 1

Keywords

  • Chironomidae
  • Lake Chany
  • denitrification
  • particulate organic matter
  • sediment
  • stable isotopes
  • sulfate reduction

ASJC Scopus subject areas

  • Aquatic Science

Fingerprint Dive into the research topics of 'Carbon, nitrogen, and sulfur isotope changes and hydro-geological processes in a saline lake chain'. Together they form a unique fingerprint.

  • Cite this

    Doi, H., Kikuchi, E., Mizota, C., Satoh, N., Shikano, S., Yurlova, N., Yadrenkina, E., & Zuykova, E. (2004). Carbon, nitrogen, and sulfur isotope changes and hydro-geological processes in a saline lake chain. Hydrobiologia, 529(1), 225-235. https://doi.org/10.1007/s10750-004-6418-2