Zobrazeno 1 - 10
of 10
pro vyhledávání: '"W. Keith Johnson"'
Autor:
Jay T. Cullen, David M. Semeniuk, Katherine A. Barbeau, Rebecca L. Taylor, Maria T. Maldonado, W. Keith Johnson, Marie Robert, Randelle M. Bundy
Publikováno v:
Limnology and Oceanography. 61:279-297
In August 2010, iron (Fe) and Fe and copper (Cu) addition incubation experiments were conducted at two low Fe stations (P20 and P26) along Line P, off the western coast of British Columbia, to investigate Cu physiology in Fe- and Fe-light co-limited
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c646957e4c49f0afb067edbb4f2f62f
https://doi.org/10.1002/lno.10210
https://doi.org/10.1002/lno.10210
Publikováno v:
Marine Chemistry. 123:133-142
Five vertical profiles of silver (Ag) in the subarctic northeast Pacific are presented. Dissolved (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd8591b446d230d1bfa6a143df0510dd
https://doi.org/10.1016/j.marchem.2010.11.002
https://doi.org/10.1016/j.marchem.2010.11.002
Autor:
W. Keith Johnson, Jun Nishioka, Daisuke Tsumune, Takashi Doi, Chi Shing Wong, Atsushi Tsuda, Yoshiko Kondo, Hajime Obata, Nes Sutherland, Shigenobu Takeda
Publikováno v:
Deep Sea Research Part II: Topical Studies in Oceanography. 56:2796-2809
A patch of water in the western subarctic gyre (low iron concentration, After the iron fertilization, we observed a significant increase in dissolved iron (1.38 nM at 5 m depth) at the center of the patch (D1). Dissolved iron concentrations subsequen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e95623262c313dfc48cb0349348c117
https://doi.org/10.1016/j.dsr2.2009.06.006
https://doi.org/10.1016/j.dsr2.2009.06.006
Autor:
W. Keith Johnson, David M. Semeniuk, Katie Gagnon, Jay T. Cullen, Maria T. Maldonado, Thomas J. Ruth
Publikováno v:
Deep Sea Research Part I: Oceanographic Research Papers. 56:1130-1142
We undertook the first measurements of metabolic Cu requirements (net Cu:C assimilation ratios) and steady-state Cu uptake rates (ρCu ss ) of natural plankton assemblages in the northeast subarctic Pacific using the short-lived radioisotope 67 Cu. S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73c686817367729c06b29fad0861644b
https://doi.org/10.1016/j.dsr.2009.03.003
https://doi.org/10.1016/j.dsr.2009.03.003
Autor:
Tom F. Pedersen, Adrian Marchetti, Paul J. Harrison, Michael F. Henry, W. Keith Johnson, Chi Shing Wong, Joseph A. Needoba
Publikováno v:
Deep Sea Research Part II: Topical Studies in Oceanography. 53:2214-2230
We report the response in the natural abundance of the stable isotopes of nitrogen (δ15N) during the Fe-enrichment experiment SERIES (Subarctic Ecosystem Response to Iron Enrichment Study) in the NE Pacific. Samples were collected for isotope analys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ae7d977fad5a7ec6818cd82e407de5e
https://doi.org/10.1016/j.dsr2.2006.05.021
https://doi.org/10.1016/j.dsr2.2006.05.021
Publikováno v:
Deep Sea Research Part II: Topical Studies in Oceanography. 52:933-953
A two-year study of the iron distributions in anticyclonic mesoscale Haida eddies of the eastern North Pacific Ocean has shown that such eddies are a major source of iron to the high nitrate–low chlorophyll (HNLC) waters of the central Gulf of Alas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b70834d43734ae6afb200c62b447ce3
https://doi.org/10.1016/j.dsr2.2004.08.017
https://doi.org/10.1016/j.dsr2.2004.08.017
Autor:
Kenshi Kuma, Takeshi Yoshimura, Jun Nishioka, Takeshi Nakatsuka, Humio Mitsudera, Daisuke Tsumune, Koji Suzuki, W. Keith Johnson, Tsuneo Ono, Shigeto Nakabayashi, Hiroaki Saito, Shigenobu Takeda, Atsushi Tsuda
Publikováno v:
Journal of Geophysical Research. 112
[1] Iron is an essential nutrient and plays an important role in the control of phytoplankton growth (Martin et al., 1989). Atmospheric dust has been thought to be the most important source of iron, supporting annual biological production in the west
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35abb43f5f4586e2af3488db503addc8
https://doi.org/10.1029/2006jc004055
https://doi.org/10.1029/2006jc004055
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