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Last Updated :2024/09/25

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Master

Affiliation (Master)

  • School of Fisheries Sciences　Training Ship “Ushio-maru”

Affiliation (Master)

  • School of Fisheries Sciences　Training Ship “Ushio-maru”

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Profile and Settings

Profile and Settings

  • Name (Japanese)

    IIDA

  • Name (Kana)

    Takahiro

  • Name

    201101085655958810

Alternate Names

Achievement

Research Interests

  • 栄養塩循環   GIS   多変量解析   植物プランクトン   海洋生態系モデル   海洋基礎生産   衛星リモートセンシング   オホーツク海   ベーリング海   北極海   南極海   海洋生態学   海洋光学   衛星海洋学   海洋生態   環境変動   地球観測   海色リモートセンシング   植物プランクトン機能種   極域海洋   海洋科学   極域科学   データロガー   バイオロギング   動物行動   

Research Areas

  • Life sciences / Aquaculture
  • Environmental science/Agricultural science / Environmental dynamics

Research Experience

  • 2016 - Today Hokkaido University School of Fisheries Sciences
  • 2015 - 2016 Hokkaido University School of Fisheries Sciences
  • 2007 - 2015 National Institute of Polar Research
  • 2006 - 2007 日本学術振興会 特別研究員

Education

  • 2004 - 2007  北海道大学大学院 水産科学研究科
  • 2002 - 2003  University of Alaska Fairbanks

Awards

  • 2005 Best poster award in GCCA6 (2005)
  • 2001 Best presentation award in PICES annual meeting (2001)

Published Papers

  • Atsushi Ooki, Ryuta Shida, Masashi Otsu, Hiroji Onishi, Naoto Kobayashi, Takahiro Iida, Daiki Nomura, Kota Suzuki, Hideyoshi Yamaoka, Tetsuya Takatsu
    Journal of Oceanography 75 (6) 485 - 501 0916-8370 2019/12 [Refereed][Not invited]
  • Daiki Nomura, Shigeru Aoki, Daisuke Simizu, Takahiro Iida
    Journal of Geophysical Research: Oceans 123 (2) 939 - 951 2169-9275 2018/02 [Refereed][Not invited]
  • Motoha Ojima, Kunio T. Takahashi, Takahiro Iida, Masato Moteki, Naho Miyazaki, Atsushi Tanimura, Tsuneo Odate
    POLAR SCIENCE 12 19 - 24 1873-9652 2017/06 [Refereed][Not invited]
     
    Sea ice covering the seasonal ice zone in the Southern Ocean contains micro-organisms (sea ice biota). Studies of sea ice biota have mostly been conducted on the land-fast ice and large ice floes, despite most sea ice in the Southern Ocean being seasonal and drifting ice types. We sampled 17 drifting sea ice floes in the marginal ice zone off Adelie Land, East Antarctica, in January 2013 and 2014. We found high densities of copepods such as Harpacticoida species (18,787 +/- 50,647 inds.m(-3)), Paralabidocera antarctica (1773 +/- 6370) and their nauplii (69,943 +/- 149,607), as well as foraminiferans (193,869 +/- 408,721) within ice. Variability in the animal assemblages among the different ice floes was observed. Cluster analysis of samples based on the assemblage of sea ice fauna revealed two major groups, which were divided by the year of the sampling, and were dominated by harpacticoid nauplii and foraminiferans, respectively. Sea ice trajectory and drifting duration estimated from satellite data were different for both years, although the origin of the sea ice was in the same bay. This study suggests that the variability of fauna among sea ice floes may reflect the continuance period of ice formation and the trajectory from where they originated. (C) 2017 Elsevier B.V. and NIPR. All rights reserved.
  • Yoshihiko Ohashi, Takahiro Iida, Shin Sugiyama, Shigeru Aoki
    POLAR SCIENCE 10 (3) 270 - 277 1873-9652 2016/09 [Refereed][Not invited]
     
    Glacial meltwater discharge from the Greenland ice sheet and ice caps forms high turbidity water in the proglacial ocean off the Greenland coast. Although the timing and magnitude of high turbidity water export affect the coastal marine environment, for example, through impacts on biological productivity, little is known about the characteristics of this high turbidity water. In this paper, we therefore report on the spatial and temporal variations in high turbidity water off the Thule region in northwestern Greenland, based on remote sensing, reflectance data at a wavelength of 555 nm (Rrs555). The high turbidity area, identified on the basis of high reflectivity (Rrs555 >= 0.0070 sr(-1)), was generally distributed near the coast, where many outlet glaciers terminate in the ocean and on land. The extent of the high turbidity area exhibited substantial seasonal and interannual variability, and its annual maximum extent was significantly correlated with summer air temperature. Assuming a linear relationship between the high turbidity area and summer temperature, annual maximum extent increases under the influence of increasing glacial meltwater discharge, as can be inferred from present and predicted future warming trends. (C) 2016 Elsevier B.V. and NIPR. All rights reserved.
  • Akinori Takahashi, Motohiro Ito, Yuuya Suzuki, Yutaka Watanuki, Jean-Baptiste Thiebot, Takashi Yamamoto, Takahiro Iida, Phil Trathan, Yasuaki Niizuma, Tomohiro Kuwae
    MARINE ECOLOGY PROGRESS SERIES 525 229 - 243 0171-8630 2015/04 [Refereed][Not invited]
     
    Spatial and temporal variability in marine biological productivity may drive heterogeneity in seasonal resources available for marine animals in temperate waters. Migratory seabirds are expected to adjust their annual cycle of breeding activities and migratory movements to exploit seasonally available resources efficiently. We studied the movement and trophic position of rhinoceros auklets Cerorhinca monocerata breeding at Teuri Island, Japan Sea, during the nonbreeding and early breeding periods over 2 yr. After breeding, the auklets moved northward from the colony to the Sea of Okhotsk, where phytoplankton blooms enhanced biological productivity in autumn. The birds then moved southward to the southwestern Japan Sea (similar to 1470 km from the colony), where major epipelagic fish and squid concentrations have been reported in winter. Stable isotope analyses suggest that the auklets fed on higher-trophic level prey, including fish and/or squid during the autumn and winter nonbreeding periods. The auklets moved northward and returned to the colony in mid-March. During the early breeding period, the birds foraged close to the colony (similar to 380 km) on lower-trophic level prey including fish and/or krill, which were available during the spring phytoplankton bloom. The timing of the return migration does not match with the northward migration of warm-water anchovy, a profitable prey during summer, but may be related to timing the chick-rearing period to correspond with anchovy arrival. We suggest that rhinoceros auklets follow spatial and seasonal changes in prey availability by a distinctive '3-step' migration (first northward, second southward, third northward) in the temperate marine system of the northwestern Pacific.
  • Andrew J. Constable, Jessica Melbourne-Thomas, Stuart P. Corney, Kevin R. Arrigo, Christophe Barbraud, David K. A. Barnes, Nathaniel L. Bindoff, Philip W. Boyd, Angelika Brandt, Daniel P. Costa, Andrew T. Davidson, Hugh W. Ducklow, Louise Emmerson, Mitsuo Fukuchi, Julian Gutt, Mark A. Hindell, Eileen E. Hofmann, Graham W. Hosie, Takahiro Iida, Sarah Jacob, Nadine M. Johnston, So Kawaguchi, Nobuo Kokubun, Philippe Koubbi, Mary-Anne Lea, Azwianewi Makhado, Rob A. Massom, Klaus Meiners, Michael P. Meredith, Eugene J. Murphy, Stephen Nicol, Keith Reid, Kate Richerson, Martin J. Riddle, Stephen R. Rintoul, Walker O. Smith, Colin Southwell, Jonathon S. Stark, Michael Sumner, Kerrie M. Swadling, Kunio T. Takahashi, Phil N. Trathan, Dirk C. Welsford, Henri Weimerskirch, Karen J. Westwood, Barbara C. Wienecke, Dieter Wolf-Gladrow, Simon W. Wright, Jose C. Xavier, Philippe Ziegler
    GLOBAL CHANGE BIOLOGY 20 (10) 3004 - 3025 1354-1013 2014/10 [Refereed][Not invited]
     
    Antarctic and Southern Ocean (ASO) marine ecosystems have been changing for at least the last 30years, including in response to increasing ocean temperatures and changes in the extent and seasonality of sea ice; the magnitude and direction of these changes differ between regions around Antarctica that could see populations of the same species changing differently in different regions. This article reviews current and expected changes in ASO physical habitats in response to climate change. It then reviews how these changes may impact the autecology of marine biota of this polar region: microbes, zooplankton, salps, Antarctic krill, fish, cephalopods, marine mammals, seabirds, and benthos. The general prognosis for ASO marine habitats is for an overall warming and freshening, strengthening of westerly winds, with a potential pole-ward movement of those winds and the frontal systems, and an increase in ocean eddy activity. Many habitat parameters will have regionally specific changes, particularly relating to sea ice characteristics and seasonal dynamics. Lower trophic levels are expected to move south as the ocean conditions in which they are currently found move pole-ward. For Antarctic krill and finfish, the latitudinal breadth of their range will depend on their tolerance of warming oceans and changes to productivity. Ocean acidification is a concern not only for calcifying organisms but also for crustaceans such as Antarctic krill; it is also likely to be the most important change in benthic habitats over the coming century. For marine mammals and birds, the expected changes primarily relate to their flexibility in moving to alternative locations for food and the energetic cost of longer or more complex foraging trips for those that are bound to breeding colonies. Few species are sufficiently well studied to make comprehensive species-specific vulnerability assessments possible. Priorities for future work are discussed.
  • Takahiro Iida, Tsuneo Odate
    POLAR SCIENCE 8 (3) 283 - 297 1873-9652 2014/09 [Refereed][Not invited]
     
    Long-term changes in phytoplankton biomass and community composition are important in the ecosystem and biogeochemical cycle in the Southern Ocean. We aim to ultimately evaluate changes in phytoplankton assemblages in this region on a decadal scale. However, yearly continuous data are lacking, and long-term datasets often include seasonal variability. We evaluated the seasonal changes in phytoplankton abundance/composition across latitudes in the Indian Ocean sector of the Southern Ocean via multi-ship observations along the 110 degrees E meridian from 2011 to 2013. The chlorophyll a concentration was 0.3-0.5 mg m(-3) in the Subantarctic Zone (40-50 degrees S) and 0.4-0.6 mg m(-3) in the Polar Frontal Zone (50-60 degrees S); pico-sized phytoplankton (<10 mu m), mainly haptophytes, were dominant in both zones. In the Antarctic Divergence area (60-65 degrees S), the chlorophyll a concentration was 0.6-0.8 mg m(-3), and nano-sized phytoplankton (>10 mm), mainly diatoms, dominated. Chlorophyll a concentrations and phytoplankton community compositions were the same within a latitudinal zone at different times, except during a small but distinct spring bloom that occurred north of 45 degrees S and south of 60 degrees S. This small seasonal variation means that this part of the Southern Ocean is an ideal site to monitor the long-term effects of climate change. (C) 2014 Elsevier B.V. and NIPR. All rights reserved.
  • Shintaro Takao, Takahiro Iida, Tomonori Isada, Sei-Ichi Saitoh, Takafumi Hirata, Koji Suzuki
    PROGRESS IN OCEANOGRAPHY 126 233 - 241 0079-6611 2014/08 [Refereed][Not invited]
     
    The Sea of Okhotsk is one of the most productive ocean regions in the world. However, the in situ bio-optical properties, which are crucial for satellite ocean-color of the productivity, remain uncertain in this region because little data have been available. We conducted an in situ observation and evaluated the bio-optical properties in terms of chlorophyll a (ChI a) concentration, spectral remote sensing reflectance (R-rs), and the light absorption coefficients of phytoplankton (a(j)), non-algal particles (a(NAP)), and chromophoric dissolved organic matter (a(CDOM)) in the summer of 2006. The data covered a wide range of Chl a levels in surface waters from 0.3 to 8.5 mg m(-3). At 443 nm, a(CDOM) dominated (64% on average) the total non-water absorption (a(t-w)) in this study area. Based on the in situ R-rs data, surface Chl a concentrations that were estimated using the sea-viewing wide field-of-view sensor (SeaWiFS) OC4v6 and the moderate-resolution imaging spectroradiometer (MOD'S) OC3M algorithms were significantly higher than the in situ data by more than 160% and 260%, respectively. In particular, the largest overestimation occurred in the region where a(CDOM) at 443 nm accounted for more than 80% of a(t-w) near the mouth of the Amur River. However, except the CDOM-rich stations, the performance of the OC4v6 and OC3M algorithms became better (i.e., their mean normalized biases were reduced to 50% and 66%, respectively). We conclude that the operational global algorithms were applicable to the summer season in the Sea of Okhotsk except the CDOM-rich region, in which new approaches for ocean-color algorithms (i.e., local algorithms) would be required. (C) 2014 Elsevier Ltd. All rights reserved.
  • Ocean environment in the northwestern Greenland coast
    Yoshihiko Ohashi, Takahiro Iida, Shin Sugiyama
    北海道の雪氷 33 85 - 88 2014 [Not refereed][Not invited]
  • Motoha Ojima, Kunio T. Takahashi, Takahiro Iida, Tsuneo Odate, Mitsuo Fukuchi
    POLAR BIOLOGY 36 (9) 1293 - 1304 0722-4060 2013/09 [Refereed][Not invited]
     
    In the Southern Ocean, zooplankton research has focused on krill and macro-zooplankton despite the high densities of micro- and meso-zooplankton. We investigated their community structure in relation to different sea ice conditions around Japan's Syowa Station in Lutzow-Holm Bay, in the summers of 2011 and 2012. Zooplankton samples were collected using vertical hauls (0-150 m), with a closing net of 100-mu m mesh size. The results of cluster analysis showed that the communities in this region were separated into fast ice, pack ice, and open ocean fauna. The fast ice fauna had lower zooplankton abundance (393.8-958.9 inds. m(-3)) and was dominated by cyclopoid copepods of Oncaea spp. (54.9-74.8 %) and Oithona similis (6.6-19.9 %). Deep-water calanoid copepods were also found at the fast ice stations. Pack ice and open ocean fauna had higher zooplankton abundance (943.6-2,639.8 inds. m(-3)) and were characterized by a high density of foraminiferans in both years (6.6-61.9 %). Their test size distribution indicated that these organisms were possibly released from melting sea ice. The pteropod Limacina spp. was a major contributor to total abundance of zooplankton in the open ocean zone in 2012 (26.4 %). The physical and/or biological changes between 2 years may affect the abundance and distribution of the dominant zooplankton taxa such as cyclopoid copepods, foraminiferans, and pteropods. Information on the relationships between the different species associated with sea ice will help to infer the possible future impacts of climate change on the sea ice regions.
  • Takahiro Iida, Tsuneo Odate, Mitsuo Fukuchi
    PLoS ONE 8 (8) 8(8): e71766. doi:10. - 1371/journal.pone.0071766 1932-6203 2013/08/21 [Refereed][Not invited]
     
    The variation of nutrients over decadal timescales south of the polar front in the Southern Ocean is poorly known because of a lack of continuous observational data in this area. We examined data from long-term continuous hydrographic monitoring of 43 years (1965-2008) in the Indian sector of the Southern Ocean, via the resupply of Antarctic stations under the Japanese Antarctic Research Expedition and Australian Antarctic Research Expedition. We found significant increasing trends in phosphate and nitrate, and a decreasing trend in apparent oxygen utilization (AOU) in intermediate water (neutral density = 27.8-28.1 kgm-3) south of the polar front. The rates of phosphate and nitrate increase are 0.004 μmol yr-1 and 0.02 μmol yr-1, respectively. The rate of decline of AOU was 0.32 μmol yr-1. One reason for this phosphate and nitrate increase and AOU decline is reduced horizontal advection of North Atlantic Deep Water, which is characterized by low nutrients and high AOU. The relationship between climate change and nutrient variability remains obscure, emphasizing the importance of long-term monitoring. © 2013 Iida et al.
  • Tomonori Isada, Takahiro Iida, Hongbin Liu, Sei-Ichi Saitoh, Jun Nishioka, Takeshi Nakatsuka, Koji Suzuki
    JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 118 (4) 1995 - 2013 2169-9275 2013/04 [Refereed][Not invited]
     
    We investigated the photosynthetic parameters of phytoplankton in the Sea of Okhotsk during the late summer of 2006 to characterize their spatiotemporal variability and to test the hypothesis that discharge from the Amur River could influence the algal photophysiology. The highest maximum quantum yield of carbon fixation in photosynthesis (phi cmax; 0.098mol C mol photons-1) was found near the Amur River mouth, where nitrate was depleted. However, none of the photosynthetic parameters, including primary productivity (PP) at the surface, were correlated with temperature, daily photosynthetically available radiation (PAR), or ambient nutrient concentrations. Variations in phi cmax depended on the variations in not only the mean chlorophyll a specific absorption coefficient of phytoplankton (*ph) but also the slope index of the absorption coefficient of phytoplankton (aph slope), an indicator for the ratio of nonphotosynthetic carotenoids to photosynthetic carotenoids. These results indicated that the phytoplankton assemblages acclimated to the ambient light conditions by regulating their cellular pigments. Additionally, *ph and euphotic depth (Zeu) were significantly correlated with salinity, suggesting that photoacclimation of the phytoplankton assemblages observed in this study could be induced by discharge of Amur River. Because spatiotemporal variations in PP were concomitant with phi cmax, *ph, and the chlorophyll a concentration, PP models based on inherent optical property (IOP) were suitable for estimating PP in the Sea of Okhotsk. This study is the first to investigate the factors controlling phytoplankton photophysiology in the Sea of Okhotsk, one of the highest primary production areas in the world.
  • Tomonori Isada, Takahiro Iida, Hongbin Liu, Sei-Ichi Saitoh, Jun Nishioka, Takeshi Nakatsuka, Koji Suzuki
    Journal of Geophysical Research: Oceans 118 (4) 1995 - 2013 2169-9291 2013 [Refereed][Not invited]
     
    We investigated the photosynthetic parameters of phytoplankton in the Sea of Okhotsk during the late summer of 2006 to characterize their spatiotemporal variability and to test the hypothesis that discharge from the Amur River could influence the algal photophysiology. The highest maximum quantum yield of carbon fixation in photosynthesis (Φcmax 0.098 mol C mol photons -1) was found near the Amur River mouth, where nitrate was depleted. However, none of the photosynthetic parameters, including primary productivity (PP) at the surface, were correlated with temperature, daily photosynthetically available radiation (PAR), or ambient nutrient concentrations. Variations in Φcmax depended on the variations in not only the mean chlorophyll a specific absorption coefficient of phytoplankton (ā* ph) but also the slope index of the absorption coefficient of phytoplankton (aph slope), an indicator for the ratio of nonphotosynthetic carotenoids to photosynthetic carotenoids. These results indicated that the phytoplankton assemblages acclimated to the ambient light conditions by regulating their cellular pigments. Additionally, ā*ph and euphotic depth (Zeu) were significantly correlated with salinity, suggesting that photoacclimation of the phytoplankton assemblages observed in this study could be induced by discharge of Amur River. Because spatiotemporal variations in PP were concomitant with Φcmax, ā*ph, and the chlorophyll a concentration, PP models based on inherent optical property (IOP) were suitable for estimating PP in the Sea of Okhotsk. This study is the first to investigate the factors controlling phytoplankton photophysiology in the Sea of Okhotsk, one of the highest primary production areas in the world. Key Points Photoacclimation of phytoplankton influenced the efficiency of carbon fixation. Amur River discharge could affect the algal photophysiology in the Okhotsk Sea. This study is the first report on photosynthetic parameters in the Okhotsk Sea. © 2013. American Geophysical Union. All Rights Reserved.
  • Field test of "ice-fence" for oceanographic observation in the sea-ice zone
    Kunio T. Takahashi, Takahiro Iida, Gen Hashida, Tsuneo Odate
    Antarctic Record 56 (3) 447 - 455 0085-7289 2012/11 
    The powerful ice-breaking capability of the Japanese icebreaker Shirase raises the possibility of marine observations in the fast-ice and/or permanent ice zone however, it has been difficult to use conventional equipment in such areas due to the risk of damage by sea-ice. The marine biological monitoring program in the sea-ice area off Syowa Station was started during the 52nd Japanese Antarctic Research Expedition to overcome the difficulties encountered when performing conventional oceanographic observations. The program employs "ice-fence" (diameter: 1000 mm, height: 700 mm, stainless-steel), which has been successful in protecting the observation equipment (e.g., plankton nets and CTDs) from damage by sea-ice. This report describes the results of field tests of the performance of "ice-fence" for oceanographic observations in sea-ice areas. Possible improvements to the system are also suggested. © 2012 National Institute of Polar Research.
  • T. Iida, K. Mizobata, S. -I. Saitoh
    CONTINENTAL SHELF RESEARCH 34 7 - 17 0278-4343 2012/02 [Refereed][Not invited]
     
    During the late summer of 1997, most of the continental shelf in the southeastern Bering Sea was covered by aquamarine-colored waters as a result of massive blooms of the coccolithophore. Emiliania huxleyi (E. huxleyi). Since then, E. huxleyi blooms in the eastern Bering Sea have become common. This study was conducted to examine spatio-temporal variability in E. huxleyi blooms in the eastern Bering Sea and to determine what factors are responsible for the blooms. In this study, we used datasets from the satellite ocean color sensor, SeaWiFS (Sea-viewing Wide Field-of-view Sensor) and MODIS (MODerate resolution Imaging Spectroradiometer) to detect the E. huxleyi blooms. The E. Huxley bloom was only found in the middle of the continental shelf domain (MSD), where the water depth is 20 to 100 m. We found large-scale interannual and seasonal variability in the area of the E. huxleyi blooms, with massive blooms observed in the spring of 1998 and 2000, and in the fall of 1997 and 2000. The blooms now typically peak in September, and only small bloom areas have also been observed since 2001. Here what we proposed is that the key parameter for the E. huxleyi blooms is the strength of the density stratification resulted from two water masses formed in different season, surface warm layer and cold bottom water (CBW). Warming of the CBW since 2001 in the middle shelf have induced weakening the aforementioned stratification during summer. With less stratification, the water column is much more easily mixed, resulting in an increased nutrient (nitrate and silicate) supply from subsurface layers by storms in the summer. This is likely to be responsible for the recent decrease in E. huxleyi blooms in the eastern Bering Sea shelf. Conversely, the strong stratification induced by an eruptive warming of surface layer and intensified cold bottom water may result in the development of the massive E. huxleyi blooms like in 1997. (C) 2011 Elsevier Ltd. All rights reserved.
  • 高橋邦夫, 飯田高大, 橋田 元, 小達恒夫
    南極資料 Vol.56, No.3, 447-455  2012 [Refereed][Not invited]
  • Takashi Yamamoto, Akinori Takahashi, Nariko Oka, Takahiro Iida, Nobuhiro Katsumata, Katsufumi Sato, Philip N. Trathan
    MARINE ECOLOGY PROGRESS SERIES 424 191 - 204 0171-8630 2011 [Refereed][Not invited]
     
    As the spatial distribution of marine organisms is often affected by seasonal changes, pelagic seabirds may change their foraging areas in response to seasonal changes in the marine environment. Here, we examined the foraging area of streaked shearwaters Calonectris leucomelas, breeding at Sangan (SA) and Mikura Islands (MK), Japan, from spring to summer during pre-laying and incubation periods. Those colonies are located at the north and south of the Northwestern Pacific's Kuroshio-Oyashio transition area where high seasonal temperature changes are observed, and where, consequently, birds may show comparable responses to such changes. Our results showed that streaked shearwaters from both colonies shifted their foraging areas northwards as the season progressed. The seasonal shift of foraging areas appeared to coincide with the movement pattern of pelagic fishes that migrate northward in association with the increase in water temperature. However, the pattern of seasonal movement differed between the 2 colonies; shearwaters from SA moved their foraging area along the coastal area of the Kuroshio-Oyashio transition, while those from MK moved along the Kuroshio Extension. Our results also indicated sex-related differences in this general pattern: females showed clear seasonal changes in foraging area, while males did not. During the pre-laying period males returned to the colony frequently to defend their nests or mates, and spent less time at sea. Our results suggest that streaked shearwaters changed their foraging areas in response to seasonal changes in the marine environment, although colony location and sex-related differences in reproductive roles may constrain the birds' responses to seasonal change.
  • Tukimat Lihan, Sei-Ichi Saitoh, Takahiro Iida, Toru Hirawake, Kohji Iida
    ESTUARINE COASTAL AND SHELF SCIENCE 78 (2) 237 - 249 0272-7714 2008/06 [Refereed][Not invited]
     
    River plumes have important effects on marine ecosystems. Variation in the extent and dispersal of river plumes is often associated with river discharge, wind characteristics and ocean circulation. The objectives of this study were to identify the Tokachi River plume by satellite, determine its relationship with river discharge and clarify its temporal and spatial dynamics. SeaWiFS multispectral satellite data (normalized water-leaving radiance: nL(w)) with 1.1 km spatial resolution were used to determine the spatial and temporal variability of the plume during 1998-2002. Supervised maximum likelihood classification using six channels of nL(w) at 412, 443, 490, 510, 555 and 670 nm with each band's spectral signature statistic was used to define classes of surface water and to estimate the plume area. Supervised maximum likelihood classification separated three to four classes of coastal water based on optical characteristics as a result of wind stress events. The satellite-observed plume area was correlated with the amount of river discharge from April to October. The plume distribution patterns were influenced by wind direction and magnitude, the occurrences of a near-shore eddy field and surface currents. Empirical orthogonal function (EOF) was used to express the spatial and temporal variability of the plume using anomalies of nL(w)(555) monthly averaged images. The first mode (44% of variance) showed the turbid plume distribution resulting from re-suspension by strong wind mixing along the coast during winter. This mode also showed the plume was distributed along-shelf direction in spring to early autumn. The second mode (17% of variance) showed spring pattern across-shelf direction. EOF analysis also explained the interannual variability of the plume signature, which might have been affected by the flow of the Oyashio Current and the occurrence of a near-shore eddy field. (C) 2007 Elsevier Ltd. All rights reserved.
  • 工藤栄, 田邊優貴子, 飯田高大, 辻本惠, 小川麻里, 伊村智
    南極資料 Vol.52, No.3, 421-436  2008 [Refereed][Not invited]
  • 夏季のオホーツク海および千島列島海域における基礎生産過程の特徴
    鈴木光次, 伊佐田智規, Hongbin Liu, 飯田高大
    月刊海洋 No.50, 99-106  2008 [Not refereed][Not invited]
  • ベーリング海における植物プランクトンの時空間変動-春季ケイ藻ブルームと夏季から秋季の円石藻類ブルーム-
    飯田高大, 溝端浩平, 齊藤誠一
    月刊海洋 No.50, 127-137  2008 [Not refereed][Not invited]
  • Meibing Jin, Clara Deal, Jia Wang, Vera Alexander, Rolf Gradinger, Sei-ichi Saitoh, Takahiro Iida, Zhenwen Wan, Phyllis Stabeno
    GEOPHYSICAL RESEARCH LETTERS 34 (6) 34, L06612  0094-8276 2007/03 [Refereed][Not invited]
     
    Ice-associated phytoplankton blooms in the southeastern Bering Sea can critically impact the food web structure, from lower tropic level production to marine fisheries. By coupling pelagic and sea ice algal components, our 1-D ecosystem model successfully reproduced the observed ice-associated blooms in 1997 and 1999 at the NOAA/PMEL mooring M2. The model results suggest that the ice-associated blooms were seeded by sea ice algae released from melting sea ice. For an ice-associated bloom to grow and reach the typical magnitude of phytoplankton bloom in the region, ice melting-resulted low-salinity stratification must not be followed by a strong mixing event that would destroy the stratification. The ice-associated blooms had little impacts on the annual primary production, but had significant impacts in terms of shifting phytoplankton species, and the timing and magnitude of the bloom. These changes, superimposed on a gradual ecosystem shift attributed to global warming, can dramatically alter the Bering Sea ecosystem.
  • Takahiro Iida, Sei-Ichi Saitoh
    DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY 54 (23-26) 2657 - 2671 0967-0645 2007 [Refereed][Not invited]
     
    Seasonal and interannual variability of surface chlorophyll concentration in the Bering Sea was examined using Empirical Orthogonal Function (EOF) analysis of data obtained by the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) from 1998 to 2002. The analysis of normalized monthly fields (removing temporal and spatial monthly means) shows that different temporal and spatial patterns are evident in the eastern and western Bering Sea during the spring bloom period. The first EOF mode explains 30% of the variability and shows how the eastern shelf break region and the western Bering Sea are out of phase during the spring bloom. The second EOF mode (17.6%) indicates a pattern involving the eastern shelf break region and the Kamchatka Basin. This strong east-west signal is linked by both surface winds and light. EOF modes of wind-speed anomalies, derived from Special Sensor Microwave Imager (SSM/I), and photosynthetically active radiance (PAR) from SeaWiFS, show a similar dipole feature where the east-west pattern is related to the position and strength of the Aleutian Low pressure system. In years when the Aleutian Low shifts from west to east, weaker wind stress facilitates the development of stratification resulting in a strong spring bloom in the western Bering Sea. The variability of spring chlorophyll has a strong connection with variability in atmospheric forcing in the Bering Sea. (C) 2007 Elsevier Ltd. All rights reserved.
  • Temporal and spatial variations of chlorophyll-a concentration and primary production over the Bering Sea
    Rho T, S. Saitoh, T. E. Whiteledge, H. Kiyofuji, T.Iida, K.Mizobata
    Proceedings of Global Change and Connection to the Arctic 82-85  2006 [Not refereed][Not invited]
  • The mechanism of temporal and spatial variability of phytoplankton in the Bering Sea and the Okhotsk Sea using satellite observation and ecosystem modeling
    Iida T, S. Saitoh
    Proceedings of Global Change and Connection to the Arctic 87-90  2005 [Not refereed][Not invited]
  • ベーリング海における円石藻類ブルームの時空間変動
    飯田高大, 齊藤誠一
    月刊海洋 Vol.35, No.6, 429-435  2003 [Not refereed][Not invited]
  • T Iida, SI Saitoh, K Mizobata
    OCEAN REMOTE SENSING AND APPLICATIONS 4892 233 - 240 0277-786X 2003 [Not refereed][Not invited]
     
    Bering Sea green belt is characterized by high productive region, with interactions of cyclonic and anti-cyclonic eddies. To study temporal and spatial variability of phytoplankton, we deployed two bio-optical drifters in a clockwise eddy in 2001 and 2002. The drifters were equipped with a spectroradiometer to measure upwelling radiance as same as Sea Wide Field-of-view Sensor (SeaWiFS) wavelength. SeaWiFS images were employed to monitor the spatial pattern of chlorophyll-a (chl-a). The drifter also measured sea surface temperature (SST). We compared SST with TOPEX/POSEIDON sea surface anomaly data and analyzed time and scale correlation of SST and phytoplankton distribution in some eddies. In 2001, a clockwise eddy trapped the drifter for 10 days. It represented relatively high chl-a concentration (about 1.0mg m(-3)) and low SST (about 8.5degreesC). After that it drifted to the Bering Sea slope current region along the shelf edge, and observed among 20days. In 2002 we deployed a drifter in center of clockwise eddy, it was staying in this eddy for 14 days. There represented relatively low chl-a concentration (about 0.4mg m(-3)) and high SST (about 9.5degreesC). After that it drifted along Bering slope current similarly. The phytoplankton distribution was deferent from two years in spite of same kind of anti-cyclonic eddy. These deferent might be depending on deference of eddy's life stage.
  • Saitoh S, T. Iida, K. Sasaoka
    Progress in Oceanography 55, 131-146  2002 [Refereed][Not invited]
  • T Iida, SI Saitoh, T Miyamura, M Toratani, H Fukushima, N Shiga
    PROGRESS IN OCEANOGRAPHY 55 (1-2) 165 - 175 0079-6611 2002 [Refereed][Not invited]
     
    In the late summer of 1997, aquamarine waters, resulting from a massive bloom of coccolithophore algae, covered most of the continental shelf of the eastern Bering Sea. This was the first such event recorded in the area, but since then, coccolithophore blooms have been common. The objectives of this study were first to determine the threshold value of the Sea Wide Field-of-view Sensor (SeaWiFS) coccolithophore algorithm using a comparison of satellite and ship-based optical observations, and second to analyze temporal and spatial variability using SeaWiFS images of the coccolithophore blooms in the Bering Sea from 1998 to 2001. In late July 1998 and 2000, we made bio-optical measurements of the coccolithophore blooms, which were composed of Emiliania huxleyi. In situ measurements of water leaving radiance (nL(w)) at characteristic wavelengths yielded values that differed from the standard NASA coccolithophore values. We therefore defined new threshold values for the mask and applied it to a time series of SeaWiFS images from the Bering Sea. Generally, the coccolithophore bloom began in February each year, as melting began along the edge of the sea ice, and then expanded northward. The bloom reached its peak in April, and then from May through August the area covered by the bloom dwindled in size. However, its area increased again in September. Throughout the study period, the blooms were located at depths of 20 to 100 m. There was annual and seasonal variability in the area affected by the coccolithophore bloom. There were large blooms in 1998 and 2000, whereas in 1999 and 2001 the area affected was smaller. These differences might be related to sea surface temperature (SST), since the largest blooms occurred in the warmest years. (C) 2002 Elsevier Science Ltd. All rights reserved.
  • S Saitoh, T Iida, K Sasaoka
    PROGRESS IN OCEANOGRAPHY 55 (1-2) 131 - 146 0079-6611 2002 [Refereed][Not invited]
     
    The Bering Sea is well known as a highly productive marginal sea. The objectives of this study were to clarify the interannual variability of spring bloom dynamics of the Bering Sea and to describe the spatial variability of this highly productive area using satellite multi-sensor remote sensing. We used multi-sensor remote sensing data sets of ocean color (OCTS and SeaWiFS), sea surface temperature (AVHRR), sea ice (SSM/I) and sea wind (SSM/I) to understand the complexity of the Bering Sea ecosystem. Phytoplankton biomass depends on the timing of sea ice melting and tends to increase when the melting is delayed. Wind stress is one of the important factors controlling the timing of the spring bloom. In 1997 and 1998, the east-west distribution of phytoplankton biomass exhibited a seesaw pattern, either high in west and low in east or low in west and high in east. We hypothesize that this seesaw pattern results from changes in the position and intensity of the Aleutian Low during spring and its relation to the El Nino-La Nina phenomena. During the El Nino period of 1998, the Aleutian Low shifted to the east of its normal position, and weak wind stresses facilitated the development of stratification and enhancement of spring bloom in the west. Conversely, when the Aleutian Low moved over into the western region in spring 1997, the same situation occurred in the east. Thus, the movements of the Aleutian Low promote a west-east seesaw pattern of sea surface wind stress, and consequently a corresponding seesaw pattern in phytoplankton biomass resulting from the subsequent variations in the depth of the mixed layer. (C) 2002 Elsevier Science Ltd. All rights reserved.

MISC

Presentations

  • Changes of phytoplankton composition in the Indian Ocean Sector of Southern Ocean using long-term monitoring datasets  [Not invited]
    Takahiro IIDA
    SCAR open science conference, Auckland  2014/08
  • Long-term trends of nutrients and apparent oxygen utilization south of the Polar Front in Southern Ocean intermediate water from 1965 to 2008  [Not invited]
    Takahiro IIDA
    Ocean Science Meeting, Honolulu  2014/02
  • 南極海・海氷生態系の機能と構造の理解を目指して ～砕氷船を用いた生物観測～  [Not invited]
    飯田高大
    国立極地研究所共同研究集会  2013/10
  • Evaluation of temporal and spatial variability of marine ecosystem and primary productivity in the polar oceans using ocean color remote sensing -Study on phytoplankton variability in the Southern Ocean-  [Not invited]
    Iida, T
    JAXA PI workshop  2013
  • 南大洋の植物プランクトン分布とサイズ組成の季節変動  [Not invited]
    飯田高大, 小達恒夫
    2013年度日本海洋学会春季大会  2013
  • Interannual variability of coccolithophore in response to changes in water column stability in the eastern Bering Sea  [Not invited]
    Iida, T, Mizobata, K, Saitoh, S.-I
    ESSAS Annual Science Meeting, Hakodate, Japan, January 7 – 9  2013
  • Seasonal variability of phytoplankton distribution and size composition in the Indian sector of Southern Ocean  [Not invited]
    Iida, T, Odate, T
    The 34th Symposium on Polar Biology  2012
  • ベーリング海の円石藻/珪藻ブルームのスイッチングとその要因  [Not invited]
    飯田高大, 溝端浩平, 齊藤誠一
    2012年度日本海洋学会春季大会  2012
  • 南大洋インド洋区における海洋環境と植物プランクトンの経年変動  [Not invited]
    飯田高大, 小達恒夫, 福地光男
    2012年度日本海洋学会春季大会シンポジウム  2012
  • 日豪共同研究によって得られた南大洋インド洋区海洋環境の長期的変動  [Not invited]
    飯田高大
    「極域における環境と生態系の変動に関する研究」 キックオフシンポジウム、東京海洋大学  2012
  • The mechanisms of phytoplankton bloom switching between coccolithophore and diatom in the Bering Sea shelf  [Not invited]
    Iida, T, Mizobata, M, Saitoh, S.-I
    ASLO 2012 Aquatic Sciences Meeting  2012
  • The long-term variability of phytoplankton distribution in the Indian sector of the Southern Ocean  [Not invited]
    IIda, T, Odate, T, Fukuchi, M
    The 33rd Symposium on Polar Biology  2011
  • The variability of ocean environment and phytoplankton along the 110°E meridian in the Southern Ocean  [Not invited]
    Iida, T, Takahashi. K, Fukuchi, M
    Plankton 2011, Plymouth, UK  2011
  • Distribution and recent changes of coccolithophore (Emiliania huxleyi) blooms in the eastern Bering Sea shelf  [Not invited]
    Iida, T, Mizobata, M, Saitoh, S. I
    ESSAS Open Science Meeting, Seattle, USA  2011
  • Progress reports on long-term variability of marine environments in the Indian Sector of Southern Ocean  [Not invited]
    Iida, T
    JST-DIISR Final Joint Workshop  2011
  • Evaluation of temporal and spatial variability of marine ecosystem and primary productivity in the polar oceans using ocean color remote sensing  [Not invited]
    Iida, T
    Joint PI Workshop of Global Environment Observation Mission  2010
  • The variability of ocean environment and phytoplankton along the 110°E meridian in the Southern Ocean  [Not invited]
    Iida, T, Takahashi, K. T, Odate, T, Fukuchi, M, McGaffin, A, Raymond, B
    The 32nd Symposium on Polar Biology  2010
  • Evaluation of temporal and spatial variability of marine ecosystem and primary productivity in the polar oceans using ocean color remote sensing  [Not invited]
    Iida, T
    1st Asian Workshop on Ocean Color, Hakodate  2010
  • 南大洋インド洋区東経１１０度ラインにおける 植物プランクトン群集の変動解析  [Not invited]
    飯田高大, 小達恒夫, 福地光男, 平譯享, McGaffin Angela
    2010年度日本海洋学会秋季大会  2010
  • 南大洋東経110°付近におけるマクロ栄養塩とクロロフィルa濃度の変動  [Not invited]
    飯田高大, 小達恒夫, 福地光男, 平譯享
    2010年度日本海洋学会春季大会  2010
  • Interannual variability of coccolithophore Emiliania huxleyi blooms in association with changes water column stability in the eastern Bering Sea from 1997 to 2008  [Invited]
    T. Iida, K. Mizobata, S. I. Saitoh
    Second International Symposium on the Arctic Research, Tokyo  2010
  • Long-term monitoring of surface phytoplankton and nutrients in the Indian Sector of Southern Ocean  [Not invited]
    Takahiro IIDA, Tsuneo Odate, Mitsuo Fukuchi, Toru Hirawake
    Japan-Australia Marine Science project workshop  2009
  • The relationship between climate variability and spatio-temporal development mechanisms of coccolitophore Emiliania huxleyi (E.huxleyi.) blooms in the eastern Bering Sea shelf  [Not invited]
    Iida, T, Mizobata, K, Saitoh, S. I
    Korea-Japan Workshop on Ocean Color  2009
  • Long term variability of Chl-a and nutrient concentrations in the Southern Ocean using JARE monitoring datasets  [Not invited]
    Iida T, N. Kasamatsu, T. Odate, M. Fukuchi, T. Hirawake
    Gordon Research Conference  2009
  • Long term variability of Chl-a and nutrient concentrations in the Southern Ocean using JARE monitoring datasets.  [Not invited]
    Iida T, N. Kasamatsu, T. Odate, M. Fukuchi, T. Hirawake
    XXXI Symposium on Polar Biology  2008
  • The relationship between the climate variability and development mechanisms of spatio-temporal Emiliania huxleyi blooms in the eastern Bering Sea shelf  [Not invited]
    Iida T, K. Mizobata, M. Toratani, S.I. Saitoh
    First International Symposium on the Arctic Research (ISAR-1)  2008
  • 南東ベーリング海陸棚域における円石藻類ブルームの時空間変動とその要因  [Not invited]
    飯田高大, 溝端浩平, 齊藤誠一
    2008年度日本海洋学会秋季大会  2008
  • ベーリング海における植物プランクトンの時空間変動  [Not invited]
    飯田高大
    東京大学海洋研究所共同利用研究集会  2008
  • Comparative study on temporal and spatial variability of chlorophyll-a concentration in the Okhotsk and Bering Seas  [Not invited]
    Iida T
    Ecosystem Study of Subarctic Sea (ESSAS) Workshop, Hakodate, Japan  2007
  • Comparative study on temporal and spatial variability of chlorophyll-a concentration in the Okhotsk Sea and Bering Sea  [Not invited]
    Iida T, S.-I. Saitoh, T. Hirawake
    XXX symposium on Polar Biology  2007
  • オホーツク海とベーリング海におけるクロロフィルa濃度  [Not invited]
    飯田高大, 齊藤誠一
    2007年度日本海洋学会秋季大会  2007
  • 衛星観測と生態系モデリングによるベーリング海・オホーツク海におけるクロロフィルa濃度変動メカニズムの解析  [Not invited]
    飯田高大, 齊藤誠一, Jia Wang, Meibing Jin
    2006年度日本海洋学会春季大会  2006
  • ベーリング海における春季植物プランクトンブルームの変動とその物理的要因  [Not invited]
    飯田高大, 齊藤誠一, Jia Wang, Meibing Jin
    2005年度日本海洋学会春季大会  2005
  • 夏季カムチャッカ海流域及び西部ベーリング海における植物プランクトン分布と基礎生産  [Not invited]
    飯田高大, 武村浩希, 齊藤誠一, 渡邉修一
    ブルーアース04 第8回みらいシンポジウム  2005
  • The springtime plankton dynamics affected by wind forcing and solar radiation in the Bering Sea shelf  [Not invited]
    Iida T, Wang J, Jin M, Saitoh S
    International GLOBEC Symposium, Climate Variability and Sub-Arctic Marine Ecosystems  2005
  • EOF解析によるベーリング海クロロフィルa 濃度の経年変動とその要因  [Not invited]
    飯田高大, 齊藤誠一
    2004年度日本海洋学会春季大会  2004
  • An Empirical Orthogonal Function (EOF) analysis of remotely sensed phytoplankton chlorophyll concentration variability in the Bering Sea  [Not invited]
    Iida T, Saitoh S
    AGU 2004 Ocean science meeting  2004
  • 衛星から観測された東部ベーリング海における円石藻ブルームの経年変動とその要因  [Not invited]
    飯田高大, 齊藤誠一
    2003年度日本海洋学会春季大会  2003
  • ベーリング海陸棚域におけるココリスブルームの経年変化 1997-2001  [Not invited]
    飯田高大, 齊藤誠一, 虎谷充浩, 福島甫
    2002年度日本海洋学会春季大会  2002
  • Phytoplankton distribution as observed from bio-optical drifters and SeaWiFS images in the Bering Sea green belt  [Not invited]
    Iida T, Saitoh S, Mizobata K
    PICES11  2002
  • Satellite Observation of Coccolithophore Blooms in the Eastern Bering Sea from 1997 to 2001  [Not invited]
    Iida T, Saitoh S, Miyamura T, Toratani M, Fukusima H
    Coccolithophores from Molecular Processes to Global Impact  2002
  • ベーリング海における春季ブルームの時空間変動解析 ～衛星マルチリモートセンシングによるアプローチ～  [Not invited]
    飯田高大, 齋藤誠一
    2001年度日本海洋学会春季大会  2001
  • Temporal and Spatial Variability of Coccolithophore blooms in the Eastern Bering Sea  [Not invited]
    Iida T, Saitoh S, Miyamura T, Toratani M, Fukusima H
    PICESX  2001

Association Memberships

  • ASLO（先進陸水海洋学会)   日本海洋学会   

Research Projects

  • 海氷融解による生態系の変化が物質循環に与える影響ー豪州砕氷船による国際南極観測ー
    日本学術振興会：科学研究費補助金 基盤研究（B)
    Date (from‐to) : 2015/04 -2018/03 
    Author : 飯田高大
  • 南極海洋生態系センティネル研究－事前観測－
    日本学術振興会：科学研究費補助金 基盤研究(A)
    Date (from‐to) : 2012 -2017 
    Author : 小達恒夫
  • 極域海洋の海洋表層環境変動と大型捕食動物の生態応答解明
    宇宙航空研究開発機構：GCOM-C研究公募
    Date (from‐to) : 2014 -2016 
    Author : 飯田高大
  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research
    Date (from‐to) : 2011/04 -2015/03 
    Author : WATANABE Shuichi, NAKNO Yoshiyuki, WAKITA Masahide, IIDA Takahiro
     
    Lenton, Matear and Tilbrook (2006) suggested sampling regularly every 3 months, at every 30 degree in longitude and 3 degree in latitude in the Southern Ocean is sufficient to determine the net Southern Ocean CO2 uptake which uncertainty has less than 0.1PgC/yr. The in-site pCO2 autonomous measuring buoys were made and deployed in the Southern Ocean to verify the suggestion of Lenton et al. The results from the buoys were not sufficient for analysis, but rapid change of pCO2 was not observed. This results were supported that suggestion. Previous study near the Kerguelen Plateau was indicated that pCO2 was quickly increasing towards the outside of the Kerguelen Plateau. However, it would be smaller as to affect the CO2 uptake. The buoys attached no drogue strongly affected with wind and were moved faster than expected.
  • 海洋表層の環境変動に対する中深層性大型捕食動物の生態応答の解明
    日本学術振興会：科学研究費補助金 基盤研究(A)
    Date (from‐to) : 2011 -2015 
    Author : 高橋 晃周
  • 高解像度海色センサーを用いた極域沿岸における海洋➖海氷生態系の時空間変動解析
    宇宙航空研究開発機構：GCOM-C研究公募
    Date (from‐to) : 2009 -2013 
    Author : 飯田高大
  • 南極海におけるペンギン類の長期生態変動メカニズムの解明
    日本学術振興会：科学研究費補助金 基盤研究(B)
    Date (from‐to) : 2008 -2011 
    Author : 高橋 晃周
  • 極域海洋における衛星と船舶観測を組み合わせた植物プランクトン群集分類手法の開発
    日本学術振興会：科学研究費補助金 若手研究（スタートアップ）
    Date (from‐to) : 2007 -2008 
    Author : 飯田高大
  • 衛星データを用いた高精度・高解像度の海洋二酸化炭素分圧推定法の開発
    情報システム研究機構 新領域融合研究センタ：融合研究シーズ
    Date (from‐to) : 2007 -2007 
    Author : 飯田高大
  • 衛星観測と海洋観測を組み合わせた円石藻類ブルームモニタリング手法の開発
    日本学術振興会：科学研究費補助金 （特別研究員奨励費）
    Date (from‐to) : 2006 -2007 
    Author : 飯田高大

Social Contribution

  • 海の宝アカデミックコンテスト 審査委員
    Date (from-to) : 2019/11-Today
    Role : Organizing member
    Sponser, Organizer, Publisher  : 日本財団
  • 世界南極の日
    Date (from-to) : 2014/10
    Role : Lecturer
    Sponser, Organizer, Publisher  : Meets Vision
  • 親子サイエンスワクワクセミナー
    Date (from-to) : 2014/08
    Role : Lecturer
    Sponser, Organizer, Publisher  : アイモールみよし
  • 岐阜県白川村立白川小中学校
    Date (from-to) : 2013/11
    Role : Lecturer
  • Date (from-to) : 2013/09
    Role : Lecturer
  • 岐阜県聖徳学園付属中学校
    Date (from-to) : 2013/08
    Role : Lecturer
  • 東京都北区環境大学
    Date (from-to) : 2012/11
    Role : Lecturer
  • 学会・シンポジウム等のコンビーナ
    Date (from-to) : 2010
    Role : Others
    Event, Program, Title : 日本海洋学会春季大会
    学会・シンポジウム等のコンビーナ
  • 学会・シンポジウム等のコンビーナ
    Date (from-to) : 2009
    Role : Others
    Event, Program, Title : Xth SCAR International Biology Symposium
    学会・シンポジウム等のコンビーナ
  • 学会・シンポジウム等のコンビーナ
    Date (from-to) : 2008
    Role : Others
    Event, Program, Title : XXXI Symposium on Polar Biology
    学会・シンポジウム等のコンビーナ
  • 他大学等での教育活動
    Role : Others 2009年-2010年 創価大学工学部非常勤講師
  • 他大学等での教育活動
    Role : Others 2008年-2009年 創価大学工学部非常勤講師
  • 社会活動・貢献など
    Role : Others 岐阜聖徳学園附属中学校（2013.08)
  • 社会活動・貢献など
    Role : Others 立川市民交流大学（2011.11)
  • 社会活動・貢献など
    Role : Others 各務ヶ原テクノプラザ（2011.09)
  • 社会活動・貢献など
    Role : Others 岐阜ワクワク親子セミナ－（2011.06)
  • 社会活動・貢献など
    Role : Others 岐阜聖徳学園附属中学校（2011.06)
  • 社会活動・貢献など
    Role : Others 北区環境大学講師(2010.09/2011.05/2012.06/2012.09)
  • 社会活動・貢献など
    Role : Others 横浜翠嵐高校講師(2009.10)
  • 社会活動・貢献など
    Role : Others 立川女子高校講師(2009.08)

Academic Contribution


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