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Springtime Contribution of Dinitrogen Fixation to Primary Production Across the Mediterranean Sea : Volume 10, Issue 1 (04/01/2013)

By Rahav, E.

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Book Id: WPLBN0004020700
Format Type: PDF Article :
File Size: Pages 26
Reproduction Date: 2015

Title: Springtime Contribution of Dinitrogen Fixation to Primary Production Across the Mediterranean Sea : Volume 10, Issue 1 (04/01/2013)  
Author: Rahav, E.
Volume: Vol. 10, Issue 1
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Levi, A., Herut, B., Mulholland, M. R., Rahav, E., & Berman-Frank, I. (2013). Springtime Contribution of Dinitrogen Fixation to Primary Production Across the Mediterranean Sea : Volume 10, Issue 1 (04/01/2013). 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. Moreover, comparisons between N2 fixation rates measured during dark versus natural light incubations (48 h) show higher rates during dark incubations at the eastern Mediterranean stations but lower rates at the western stations. This suggests that heterotrophic diazotrophy has 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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