Phosphorus budgetary analysis of sediment–water interface in a short-term anoxic condition in shallow Lake Kasumigaura, Japan

DOI PDF Web Site Web Site 3 Citations 22 References

Bibliographic Information

Published
2016-06-29
Resource Type
journal article
Rights Information
  • http://www.springer.com/tdm
DOI
  • 10.1007/s10201-016-0496-5
Publisher
Springer Science and Business Media LLC

Search this article

Description

To investigate the effective depth from the surface sediment, and phosphorus fractions related to phosphorus release under short-term anoxic conditions, varying lengths of sediment cores taken from Lake Kasumigaura, a large shallow polymictic lake in Japan, were incubated for a few weeks and then analyzed. Results showed few differences in total phosphorus (TP) amount per unit area in overlying waters irrespective of the core thickness, and sums of TP in both overlying water and 0- to 2-cm sediment layers were nearly equal before and after the experiment, indicating that phosphorus was released mainly from the 0- to 2-cm layer by dissolution. In contrast, phosphorus was decreased in pore water below a 2-cm depth, probably through sorption to sediment solids. The citrate-dithionite-bicarbonate total phosphorus (CBD-TP) and non-reactive phosphorus extracted by NaOH (NaOH-NRP) in sediment solids in the 0- to 2-cm layer decreased during the experiment. The decreases of CBD-TP were 10 times higher than those of NaOH-NRP, suggesting that the released phosphorus came mainly from the fraction bound to iron in Lake Kasumigaura.

Journal

  • Limnology

    Limnology 18 (1), 131-140, 2016-06-29

    Springer Science and Business Media LLC

Citations (3)*help

See more

References(22)*help

See more

Related Projects

See more

Report a problem

Back to top