Study of CO2 budget and ecosystem in the western North Pacific

2005 Fiscal Year Final Research Report Summary

• Project/Area Number: 15310014
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Hokkaido Tokai University
• Principal Investigator: HATTORI Hiroshi Hokkaido Tokai University, Department of Marine Sciences and Technology, Professor, 工学部, 教授 (60208543)
• Co-Investigator(Kenkyū-buntansha): SAITO Hiroaki Tohoku National Fisheries Research Institute, Oceanography Division, Researcher, 海洋環境部, 研究室長 ; TSUDA Atsushi University of Tokyo, Ocean Research Institute, Associate Professor, 海洋研究所, 助教授 (80217314) ; SAITOH Sei-ichi Hokkaido University, Faculty of Fisheries, Professor, 大学院・水産学研究科, 教授 (70250503)
• Project Period (FY): 2003 – 2005
• Keywords: Phytoplankton pigments / HPLC / Oyashio / estern subarctic Pacific / Diatoms / Coccolith / 円石藻類

Research Abstract

In order to evaluate CO2 budget and ecosystem in the western subarctic Pacific, seasonal change s in phytoplankton abundance were observed by means of phytoplankton pigment analysis and cell-count to understand the physiological influences on the abundance in the upper layer off Kushiro, western Subarctic Pacific. Diatoms (larger cell size) were most abundant in the phytoplankton assemblage measured by pigments throughout the year although chrysophytes (small sized cell) were become dominant by cell-count particulary at offshore site. This reveals that water temperature was lower at offshore site than the coastal site because of low temperature preference of chrysophytes.
Seasonal changes in the carbon budget in the surface layer will be estimated near future because cell count is not completed yet on our whole samples.

Research Products

• [Journal Article] Comparative analysis of phytosynthetic properties in ice algae and phytoplankton inhabiting Franklin Bay, Canadian Arctic, With those in mesophilic diatoms during CASES 03-04. (2006)
  • Author(s): Ban, A, S.Aikawa, H.Hattori, 他6名
  • Journal Title: Polar Biosci 19 Pages: 11-28
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Comparative analysis of phytosynthetic properties in ice algae and phytoplankton inhabiting Franklin Bay, Canadian Arctic, with those in mesophilic diatoms during CASES 03-04. (2006)
  • Author(s): Ban, A., S.Aikawa, H.Hattori, H.Sasaki, M.Sampei, S.Kudoh, M.Fukuchi, K.Satoh, Y.Kashino
  • Journal Title: Polar Biosci 19 Pages: 11-28
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Role of heterotrophic dinoflagellate Gyrodinium sp. in the fate of an iron-enrichment induced diatom bloom. (2006)
  • Author(s): Saito, H., T.Ota, K.Suzuki, J.Nishioka, A.Tsuda
  • Journal Title: Geophysical. Res.Let. 33 Pages: L09602,10. 1029/2005GL025366
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Contribution of benthic microalgae to ice covered coastal ecosystems in northern Hokkaido, Japan. (2005)
  • Author(s): McMinn, A, T.Hirawake, T.Hamoka, H.Hattori, M.Fuckuchi
  • Journal Title: J. Mar.Biol. Ass.U.K 85 Pages: 283-289
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Response of microzooplanktonto in-situ iron fertilization in the western subarctic Pacific (SEEDS). (2005)
  • Author(s): Saito, H, K.Suzuki, A.Hinuma, T.Ota, K.Fukami, H.Kiyosawa, T.Saino, A.Tsuda
  • Journal Title: Prog. Oceanogr. 64/2-4 Pages: 223-236
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Seasonal variation of absorption by particles and colored dissolved organic matter (CDOM) in Funka Bay, southwestern Hokkaido, Japan (2005)
  • Author(s): Sasaki, H, T.Miyamura, S.Saitoh, J.Ishizaka
  • Journal Title: Coastal and Shelf Science 64 Pages: 447-458
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Wesozooplankton responses to iron-fertilization in the western subarctic Pacific (SEEDS2001). (2005)
  • Author(s): Tsuda, A, Saito, H, Nishioka, J., One, T
  • Journal Title: Prog. Oceanogr. 64/2-4 Pages: 237-251
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Responses of diatoms to iron-enrichment (SEEDS) in the western subarctic Pacific, temporal and spatial comparisons. (2005)
  • Author(s): Tsuda, A, H.Kiyosawa, A.Kuwata, H.Saito, 他7名
  • Journal Title: Prog. Oceanogr. 64/2-4 Pages: 189-205
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Export fluxes of POC estimated from 234Th/238U disequilibrium in the subarctic Pacific during the iron-enrichment experiment. (2005)
  • Author(s): Aono, T., M.Yamada, I.Kudo, K.Imai, Y.Nojiri, A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 263-282
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Synthesis of iron fertilization experiments : From the iron age in the age of enlightenment. (2005)
  • Author(s): De Baar, H., P.W.Boyd, K.Coale, M.R.Landry, A.Tsuda, P.Assmy, D.C.E.Bakker, Y.Bozec, R.T.Barber, M.A.Brezinski, K.O.Buesseler, M.Boye, P.L.Croot, F.Gervais, M.Y.Gorbunov, P.J.Harrison, W.T.Hiscock, P.Laan, C.Lancelot, C.S.Law, M.Lavasseur, A.Marchetti, F.J.Milero, J.Nishioka, Y.Nojiri, T.van Oijen, U.Riebesell, M.J.A.Rikenberg, H.Saito, S.Takeda, K.R.Timmermans, M.J.W.Veldhuis, A.M.Waite, C.S.Wong
  • Journal Title: J.Geophys.Res. 110 Pages: C09S16,doi:10.1029/2004JC002601.
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] The evolution and termination of an iron-induced mesoscale bloom in the north east subarctic Pacific. (2005)
  • Author(s): Boyd, P.W., Strzpek, R., Takeda, S., Jackson, G., Wong, C.S., McKay, R.M., Law, C., Kiyosawa, H., Saito, H., Sherry, N., Johnson, K., Gower, J., Ramaiah, N.
  • Journal Title: Limnology and Oceanography. 50 Pages: 1872-1886
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Dynamics of trace metals during the subarctic Pacific iron experiment for ecosystem dynamics study (SEEDS2001). (2005)
  • Author(s): Kinugasa, M., T.Ishita, Y.Sohrin, K.Okamura, S.Takeda, J.Nishioka, A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 129-147
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Primary Production and Nitrogenous nutrients assimilation dynamics during the Subarctic Pacific Iron Experiment for Ecosystem Dynamics Study (SEEDS). (2005)
  • Author(s): Kudo, I., Y.Noiri, K.Imai, Y.Nojiri, A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 207-221
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Selection and viability after ingestion of vegetative cells, resting spores and resting cells of the marine diatom, Chaetoceros pseudocurvisetus, by two copepods. (2005)
  • Author(s): Kuwata, A., A.Tsuda
  • Journal Title: J.Exo.Mar.Biol.Ecol. 322 Pages: 143-151
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Contribution of benthic microalgae to ice covered coastal ecosystems in northern Hokkaido, Japan. (2005)
  • Author(s): McMinn, A., T.Hirawake, T.Hamoka, H.Hattori, M.Fuckuchi
  • Journal Title: J.Mar.Biol.Ass.U.K. 85 Pages: 283-289
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Iron and temperature, two factors influencing phytoplankton species composition in the western subarctic Pacific. Ocean. (2005)
  • Author(s): Noiri, Y., I.Kudo, H.Kiyosawa, J.Nishioka, A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 149-166
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Diel patterns in chlorophyll a specific absorption coefficient and absorption efficiency factor of picoplankton. (2005)
  • Author(s): Ohi, N., Saito, H., Taguchi, S.
  • Journal Title: Journal of Oceanography 61 Pages: 379-388
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Velocity Field of the Oyashio Region Observed with Satellite-Tracked Surface Drifters during 1999-2000 (2005)
  • Author(s): Ohshima, K.I., M.Wakatsuchi, S.Saitoh
  • Journal Title: Journal of Oceanography 61(5) Pages: 845-855
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Effect of iron enrichment on the dynamics of transparent exopolymer particles in the western subarctic Pacific. (2005)
  • Author(s): Ramaiah, N., S.Takeda, K.Furuya, T.Yoshimura, J.Nishioka, T.Aono, Y.Nojiri, K.Imai, I.Kudo, H.Saito, A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 253-261
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Response of microzooplanktonto in-situ iron fertilization in the western subarctic Pacific (SEEDS). (2005)
  • Author(s): Saito, H., K.Suzuki, A.Hinuma, T.Ota, K.Fukami, H.Kiyosawa, T.Saino, A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 223-236
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Seasonal variation of absorption by particles and colored dissolved organic matter (CDOM) in Funka Bay, southwestern Hokkaido, Japan (2005)
  • Author(s): Sasaki, H., T.Miyamura, S.Saitoh, J.Ishizaka
  • Journal Title: Estuarine, Coastal and Shelf Science 64 Pages: 447-458
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Response of phytoplankton and heterotrophic bacteria in the northwest subarctic Pacific to in situ iron fertilization as estimated by HPLC pigment analysis and flow cytometry. (2005)
  • Author(s): Suzuki, K., A.Hinuma, H.Saito, H.Kiyosawa, H.B.Liu, T.Saino, A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 167-187
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] An in situ iron-enrichment experiment in the western subarctic Pacific (SEEDS) : Introduction and summary. (2005)
  • Author(s): Takeda, S., A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 95-109
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Mesozooplankton responses to iron-fertilization in the western subarctic Pacific (SEEDS2001). (2005)
  • Author(s): Tsuda, A., Saito, H., Nishioka, J., Ono, T.
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 237-251
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] 北太平洋における鉄散布実験-プロジェクトの立ち上げと成果- (2005)
  • Author(s): 津田敦, 武田重信
  • Journal Title: 日本生態学会誌 55 Pages: 514-519
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Responses of diatoms to iron-enrichment (SEEDS) in the western subarctic Pacific, temporal and spatial comparisons. (2005)
  • Author(s): Tsuda, A., H.Kiyosawa, A.Kuwata, M.Mochizuki, N.Shiga, H.Saito, S.Chiba, K., Imai, J.Nishioka, T.Ono
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 189-205
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Physical behavior of the iron fertilized patch by SF6 tracer release experiment. (2005)
  • Author(s): Tsumune, D., J.Nishioka, A.Shimamoto, S.Takeda, A.Tsuda
  • Journal Title: Prog.Oceanogr. 64/2-4 Pages: 111-127
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] The decline and fate of an iron-induced subarctic phytoplankton bloom. (2004)
  • Author(s): Boyd P.W.C.S.Law, Y.Nojiri, C.S.Wong, Y.Nojiri, A.Tsuda, M.Levasseur, S.Takeda, R.Rivkin, P.J.Harrison, R.Strzepek, J.Gower, R.Mike McKay, E.Abraham, M.Arychuk, J.Barwell-Clarke, W.Crawford, D.Crawford, M.Hale, K.Harada, K.Johnson, H.Kiyosawa, I.Kudo, A.Marchetti, W.Miller, J.Needoba, J.Nishioka, H.Ogawa, J.Page, M.Robert, H.Saito, A.Sastri, N.Sherry, T.Soutar, N.Sutherland, Y.Taira, F.Whitney, S.-K.E.Wong, T.Yoshimura.
  • Journal Title: Nature 428 Pages: 549-553
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] A comparison of the seasonality and interannual variability of phytoplankton biomass and production in the western and eastern gyre of the subarctic Pacific using multi-sensor satellite data (2004)
  • Author(s): Goes, J.I., Sasaoka, K., Gomes, H.R., Saitoh, S., Saino, T.
  • Journal Title: J.Oceanogr. 60(1) Pages: 75-92
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Spatial variability of living coccolithophore distribution in the western Subarctic Pacific and western Bering Sea. (2004)
  • Author(s): Hattori, H., M.Koike, K, Tachikawa, H.Saito, K.Nagasawa
  • Journal Title: J.Oceanogr. 60 Pages: 505-515
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] North Pacific east-west similarities and differences in nutrient and phytoplankton dynamics. (2004)
  • Author(s): Harrison, P.J., A.Tsuda, H.Saito, F.Whitney, K.Tadokoro
  • Journal Title: JO 60 Pages: 93-117
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Contributions of VENFISH program : mesozooplankton, pacific saury (Cololabis saira), and walleye pollock (Theragra chalcogramma) in the northwestern Pacific. (2004)
  • Author(s): Ito, S., Sugisaki, H., Tsuda, A, Yamamura, O., Okuda, K
  • Journal Title: Fishries Oceanogr. 13(S1) Pages: 1-9
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] The community structure and dynamics of phytoplankton in the western subarctic Pacific Ocean. (2004)
  • Author(s): Liu, H., Suzuki, K., Saito, H.
  • Journal Title: Journal of Oceanography 60 Pages: 119-137
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Detection of Possible Japanese Common Squid (Todarodes pacificus) Migration Routes in the Sea of Japan from Nighttime Visible Images. (2004)
  • Author(s): Kiyofuji, K., S.Saitoh
  • Journal Title: Marine Ecological Progress Series 276 Pages: 173-186
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Variability of Bering Sea eddies and primary productivity along the shelf edge during 1998-2000 using satellite multi-sensor remote sensing. (2004)
  • Author(s): Mizobata, K., Saitoh, S.
  • Journal Title: Journal of Marine Systems 50(1-2) Pages: 101-111
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Detection of potential fishing ground for albacore tuna using synoptic measurements of ocean color and thermal remote sensing in the northwestern North Pacific. (2004)
  • Author(s): Mukti Zainuddin, Katsuya Saitoh, Sei-ichi Saitoh
  • Journal Title: Geophysical Research Letter Vol.31 Pages: L20311,doi:10.029/2004GL021000
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Fate of sinking particles, especially fecal pellets, within the epipelagic zone in the North Water (NOW) Polynya of northern Baffin Bay. (2004)
  • Author(s): Sampei, M., H.Sasaki, H.Hattori, M.Fukuchi, B.T.Hargrave
  • Journal Title: Mar.Ecol.Prog.Ser. 278 Pages: 17-25
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] 衛星データを用いた海洋一次生産見積もりのための日本近海Sea-truthデータの集積 (2004)
  • Author(s): 津田敦, 横内克己, 桑田晃, 浅沼市男, 足立久美子, 市川忠史, 廣田裕一, 葛西広海, 石田洋
  • Journal Title: 地球環境 2 Pages: 145-152
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Life histories of Eucalanus bungii and Neocalanus cristatus (Calanoida : Copepoda) in the western subarctic Pacific. (2004)
  • Author(s): Tsuda, A., H.Saito, H.Kasai
  • Journal Title: Fishries Oceanogr. 13(S1) Pages: 10-20
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Comparative life-history study on sympatric hyperiid amphipods (Themisto pacifica and T.japonica) in the Oyashio region, western North Pacific. (2004)
  • Author(s): Yamada, Y., T.Ikeda, A.Tsuda
  • Journal Title: Mar.Biol. 145 Pages: 515-527
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Phytoplankton distribution as observed from bio-optical drifters and SeaWiFS images in the Bering Sea green belt (2003)
  • Author(s): Iida, T., Saitoh, S., Mizobata, K.
  • Journal Title: Proceedings of SPIE Vol.4892 Pages: 233-240
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Functional roles of interzonal migrating mesozooplankton in the western subarctic Pacific. (2003)
  • Author(s): Kobari, T.A.Shinada, A.Tsuda
  • Journal Title: Prog.Oceanogr. 57 Pages: 279-298
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Elemental analysis of otoliths of walleye pollock : A trial to discriminate the local stocks around Hokkaido, Japan. (2003)
  • Author(s): Kimura, R., O.Yamamura, Y.Ozeki, A.Tsuda
  • Journal Title: Fish.Sci. 69 Pages: 1207-1215
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Characteristics of cyclonic and anticyclonic eddies in the southeastern Bering Sea 1998-2000 using TOPEX/Poseidon. (2003)
  • Author(s): Mizobata, K., Saitoh, S.
  • Journal Title: Proceeding of SPIE Vol.4892 Pages: 473-481
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Spawning season and migration of the myctophid fish Diaphus theta in the western North Pacific. (2003)
  • Author(s): Moku, M., A.Tsuda, K.Kawaguchi
  • Journal Title: Ichthyological Research 50 Pages: 52-58
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Size-fractionated iron distributions and iron-limitation process in the subarctic NW Pacific. (2003)
  • Author(s): Nishioka, J., S.Takeda, I.Kudo, D.Tsumune, T.Yoshimura, K.Kuma, A.Tsuda
  • Journal Title: Geophysical.Res.Let. 300 Pages: 958-961
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Influence of UV-B radiation on hatching success of marine copepod Paracalanus parvus s. 1. (2003)
  • Author(s): Saito, H., Taguchi, S.
  • Journal Title: J.Exp.Mar.Biol.Ecol. 282 Pages: 135-147
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Influence of light intensity on diatom physiology and nutrient dynamics in the Oyashio region. (2003)
  • Author(s): Saito, H., A.Tsuda
  • Journal Title: Prog. Oceanogr. 57 Pages: 251-263
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] A mesoscale iron enrichment in the western subarctic Pacific induces large centric diatom bloom. (2003)
  • Author(s): Tsuda, A., S.Takeda, H.Saito, J.Nishioka, Y.Nojiri, I.Kudo, H.Kiyosawa, A.Shiomoto, K.Imai, T.Ono, A.Shimamoto, D.Tsumune, T.Yoshimura, T.Aono, A.Hinuma, M.Kinugasa, K.Suzuki, Y.Sohrin, Y.Noiri, H.Tani, Y.Deguchi, N.Tsurushima, H.Ogawa, K.Fukami, K.Kuma, T.Saino
  • Journal Title: Science 300 Pages: 958-961
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Effects of the vertical dilution by the winter mixing on the spring diatom bloom simulated by the one dimensional ecosystem model. (2003)
  • Author(s): Yoshie, N., Yamanaka, Y., Kishi, M.J., Saito, H.
  • Journal Title: Journal of Oceanography. 59 Pages: 563-571
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Pathways of biogenic carbon flow in a highly productive Arctic polynya : the North Water.
  • Author(s): Tremblay, J.-E., C.Michel, H.Hattori, M.Ringuette, L.Fortier, C.Lovejoy, K.A.Hobson, Z.-P.Mei, D.Amiel, K.Cochran
  • Journal Title: Progress in Oceanography (in press)
  • Description: 「研究成果報告書概要(欧文)」より