Active Denitrification in the Hypolimnetic Water Column in Lake Kizaki

Denitrifying activities of the water column of Lake Kizaki were estimated by the acetylene blockage method. Active denitrification was detected in the developed anoxic water column and maximum activity was estimated as 2.0 μg-at N·l-1·day-1 at 24 m depth on 2 December 1984, where maximum nitrous oxi...

Full description

Saved in:
Bibliographic Details
Published inJapanese Journal of Limnology (Rikusuigaku Zasshi) Vol. 48; no. 3; pp. 219 - 224
Main Authors TERAI, Hisayoshi, YOH, Muneoki, SAIJO, Yatsuka
Format Journal Article
LanguageEnglish
Published The Japanese Society of Limnology 1987
Subjects
Acetylene Blockage
Denitrification
Freshwater
Lake Kizaki
N2O
Online AccessGet full text
ISSN0021-5104
1882-4897
DOI10.3739/rikusui.48.219

Cover

More Information
Summary:Denitrifying activities of the water column of Lake Kizaki were estimated by the acetylene blockage method. Active denitrification was detected in the developed anoxic water column and maximum activity was estimated as 2.0 μg-at N·l-1·day-1 at 24 m depth on 2 December 1984, where maximum nitrous oxide (N2O) accumulation (2.6 μg-at N·l-1) was also observed. Contribution of denitrification as N2O (N2O/(N2+N2O)) was found to be 34% to 49% of the total denitrification in some active denitrifying layers. When most active denitrification was observed, distribution of denitrifying bacteria in hypolimnion showed almost an exponential increase in number toward the lake bottom.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0021-5104
1882-4897
DOI:10.3739/rikusui.48.219