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Springtime Contribution of Dinitrogen Fixation to Primary Production Across the Mediterranean Sea : Volume 9, Issue 3 (14/05/2013)

By Rahav, E.

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Book Id: WPLBN0004020658
Format Type: PDF Article :
File Size: Pages 10
Reproduction Date: 2015

Title: Springtime Contribution of Dinitrogen Fixation to Primary Production Across the Mediterranean Sea : Volume 9, Issue 3 (14/05/2013)  
Author: Rahav, E.
Volume: Vol. 9, Issue 3
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Levi, A., Mulholland, M. R., Herut, B., Rahav, E., & Berman-Frank, I. (2013). Springtime Contribution of Dinitrogen Fixation to Primary Production Across the Mediterranean Sea : Volume 9, Issue 3 (14/05/2013). Retrieved from

Description: Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 52900, Israel. Dinitrogen (N2) fixation rates were measured during early spring across the different provinces of Mediterranean Sea surface waters. N2 fixation rates, measured using 15N2 enriched seawater, were lowest in the eastern basin and increased westward with a maximum at the Strait of Gibraltar (0.10 to 2.35 nmol N L−1 d−1, respectively). These rates were 3–7 fold higher than N2 fixation rates measured previously in the Mediterranean Sea during summertime and we estimated that methodological differences alone did not account for the seasonal changes we observed. Higher contribution of N2 fixation to primary production (4–8%) was measured in the western basin compared to the eastern basin (∼2%). Our data indicates that these differences between basins may be attributed to changes in N2-fixing planktonic communities and that heterotrophic diazotrophy may play a significant role in the eastern Mediterranean while autotrophic diazotrophy has a more dominant role in the western basin.

Springtime contribution of dinitrogen fixation to primary production across the Mediterranean Sea

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