Patterns of nitrogen fixation along 10°N in the tropical Atlantic

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Patterns of nitrogen fixation along 10 N in the tropical Atlantic

[1] Nitrogen fixation supports new production in the oligotrophic oceans and removes dinitrogen and carbon dioxide from mixed layer waters. N-fixation rates have been estimated in various ways but measurements are still too rare and factors limiting N-fixation are not yet fully understood. Here we present data from a transect along 10 N through the tropical Atlantic on the Meteor Cruise 55 wher...

متن کامل

Distribution of nitrogen fixation in the Tropical Atlantic

Spatial variation in N2-fixation rate and diazotroph activity in the Tropical Atlantic J. P. Montoya, M. Voss, and D. G. Capone Georgia Institute of Technology, Atlanta GA, USA Institut für Ostseeforschung, Warnemünde, Germany University of Southern California, Los Angeles CA, USA Received: 3 April 2006 – Accepted: 24 April 2006 – Published: 9 November 2006 Correspondence to: J. P. Montoya (j.m...

متن کامل

Environmental Forcing of Nitrogen Fixation in the Eastern Tropical and Sub-Tropical North Atlantic Ocean

During the winter of 2006 we measured nifH gene abundances, dinitrogen (N(2)) fixation rates and carbon fixation rates in the eastern tropical and sub-tropical North Atlantic Ocean. The dominant diazotrophic phylotypes were filamentous cyanobacteria, which may include Trichodesmium and Katagnymene, with up to 10(6) L(-1)nifH gene copies, unicellular group A cyanobacteria with up to 10(5) L(-1)n...

متن کامل

Biogeochemical signatures of nitrogen fixation in the eastern North Atlantic

[1] Stable nitrogen isotopic determination of particulate organic matter over the eastern North Atlantic in spring 2000 reveal a region of low natural abundance of N relative to N between 26 N and 32 N along 20 W. This light isotopic signal, together with phytopigment data and persistently elevated nitrate to phosphate ratios in the upper thermocline, suggest that nitrogen fixation provides a l...

متن کامل

Growth and nitrogen fixation of tropical Acacias

Nitrogen is mainly lost from most Australian tropical savanna ecosystems via fire and replenished through symbiotic nitrogen fixation. The frequency and severity of bushfires in Australia, which are common and extensive in tropical savannas, are expected to increase under climate change. Thus the nitrogen loss from tropical savannas can be exacerbated. This research investigates how climate cha...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Geophysical Research Letters

سال: 2004

ISSN: 0094-8276

DOI: 10.1029/2004gl020127