J
Joseph A. Needoba
Researcher at Oregon Health & Science University
Publications - 39
Citations - 2758
Joseph A. Needoba is an academic researcher from Oregon Health & Science University. The author has contributed to research in topics: Estuary & Nitrate. The author has an hindex of 20, co-authored 38 publications receiving 2468 citations. Previous affiliations of Joseph A. Needoba include Monterey Bay Aquarium Research Institute & University of British Columbia.
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Journal ArticleDOI
The decline and fate of an iron-induced subarctic phytoplankton bloom
Philip W. Boyd,Cliff S. Law,Chi Shing Wong,Yukihiro Nojiri,Atsushi Tsuda,Maurice Levasseur,Shigenobu Takeda,Richard B. Rivkin,Paul Harrison,Paul Harrison,Robert F. Strzepek,Jim Gower,R. Mike McKay,Edward R. Abraham,Mike Arychuk,J. Barwell-Clarke,William R. Crawford,David W. Crawford,Michelle S. Hale,Koh Harada,Keith Johnson,Hiroshi Kiyosawa,Isao Kudo,Adrian Marchetti,William L. Miller,Joseph A. Needoba,Jun Nishioka,Hiroshi Ogawa,J.S. Page,Marie Robert,Hiroaki Saito,Akash R. Sastri,Nelson D. Sherry,Tim Soutar,Nes Sutherland,Yosuke Taira,Frank A. Whitney,Shau-King Emmy Wong,Takeshi Yoshimura +38 more
TL;DR: The depletion of silicic acid and the inefficient transfer of iron-increased POC below the permanent thermocline have major implications both for the biogeochemical interpretation of times of greater iron supply in the geological past, and also for proposed geo-engineering schemes to increase oceanic carbon sequestration.
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Coupled nitrogen and oxygen isotope fractionation of nitrate during assimilation by cultures of marine phytoplankton
TL;DR: In this paper, the first measurements of coupled nitrogen (N) and oxygen (O) isotopic variations of nitrate (NO ) 2 3 during its assimilation by laboratory cultures of marine phytoplankton and derive the N and O kinetic isotope effects for nitrate assimilation.
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Database of diazotrophs in global ocean: abundance, biomass and nitrogen fixation rates
Ya-Wei Luo,Scott C. Doney,Laurence A. Anderson,Mar Benavides,Ilana Berman-Frank,Antonio Bode,Sophie Bonnet,Kjärstin H Boström,Daniela Böttjer,Douglas G. Capone,Edward J. Carpenter,Yuh-ling Lee Chen,Matthew J. Church,John E. Dore,Luisa I. Falcón,Ana Belén Méndez Fernández,Rachel A. Foster,Ken Furuya,Fernando Gómez,Kjell Gundersen,Annette M. Hynes,Annette M. Hynes,David M. Karl,Satoshi Kitajima,Rebecca Langlois,Julie LaRoche,Ricardo M. Letelier,Emilio Marañón,Dennis J. McGillicuddy,Pia H. Moisander,Pia H. Moisander,C. M. Moore,Beatriz Mouriño-Carballido,Margaret R. Mulholland,Joseph A. Needoba,K. M. Orcutt,Alex J. Poulton,Eyal Rahav,Patrick Raimbault,Andrew P. Rees,Lasse Riemann,Takuhei Shiozaki,Ajit Subramaniam,Toby Tyrrell,Kendra A. Turk-Kubo,Marta M. Varela,Tracy A. Villareal,Eric A. Webb,Angelicque E. White,Jingfeng Wu,Jonathan P. Zehr +50 more
TL;DR: This database is limited spatially, lacking large regions of the ocean especially in the Indian Ocean, but can nevertheless be used to study spatial and temporal distributions and variations of marine N2 fixation, to validate geochemical estimates and to parameterize and validate biogeochemical models.
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Nitrogen isotope fractionation in 12 species of marine phytoplankton during growth on nitrate
TL;DR: The results indicate that there is no simple mechanism for describing differences in isotope fractionation between groups of phytoplankton, and that a physiological understanding of isotopes fractionation during uptake and assimilation of nitrate is needed to properly understand the δ 15 N signal generated by phy toplankon in the ocean.
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Chemical sensor networks for the aquatic environment
TL;DR: Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, California 95039, School of Oceanography, University ofWashington, Seattle, Washington 98195-7940, Department of Marine, Earth and Atmospheric Sciences, North Carolina State University,Raleigh, North North Carolina 27695.