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Nitrogen fixation by rhizosphere and free‐living bacteria in salt marsh sediments 1
Author(s) -
Teal John M.,
Valiela Ivan,
Berlo Diane
Publication year - 1979
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1979.24.1.0126
Subject(s) - rhizosphere , nitrogen fixation , salt marsh , marsh , bacteria , fixation (population genetics) , biology , nitrogen , ecology , nitrogen cycle , agronomy , botany , chemistry , wetland , biochemistry , genetics , organic chemistry , gene
The rates of nitrogen fixation by rhizosphere and free‐living bacteria are highest near the surface of a variety of salt marsh sediments and in the warm part of the year. The highest rates were found in vegetated habitats, reaching up to about 500 ng N·cm −2 ·h −1 . Bacterial N 2 fixation for the entire marsh is more than 10 times larger than algal fixation and less than a third of the N required to support growth of the vegetation.