Effects of allochthonous inputs on estuarine productivity

• Project/Area Number: 24780180
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: General fisheries
• Research Institution: University of Tsukuba
• Principal Investigator: KON Koetsu 筑波大学, 生命環境系, 助教 (40626868)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 河口域 / 生物群集 / 生態系の繋がり / 持続的利用 / 砂浜 / 他生的資源 / 異地性流入 / 安定同位体 / 河口

Outline of Final Research Achievements

Estuarine habitats are common ecotones that receive both riverine and marine materials. I have observed the essential role of allochthonous resources in the species diversity of estuarine faunal communities. I undertook field surveys of several estuaries of the Izu peninsula in Japan, and analyzed carbon and nitrogen stable isotopes of organisms to determine the utilization patterns of allochthonous resources for estuarine animals. The results have indicated that estuarine fauna utilize marine and riverine allochthonous resources and that faunal diversity is influenced by the abundance of allochthonous resources.

Research Products

• [Journal Article] Do allochthonous inputs represent an important food resource for benthic macrofaunal communities in estuarine mudflats? (2015)
  • Author(s): Kon K., Tongnunui P. and Kurokura H.
  • Journal Title: Food Webs Volume: 2 Pages: 10-17
  • DOI: 10.1016/j.fooweb.2015.03.001
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] タイ・ラヨーン沿岸における定置網漁獲物の栄養段階 (2014)
  • Author(s): 岡本侑樹・石川智士・今 孝悦・渡邉一哉・吉川 尚・Jintana Salaenoi
  • Journal Title: 日本水産学会誌 Volume: 80 Pages: 837-837
• [Journal Article] タイ・ラヨーン沿岸における定置網漁獲物の栄養段階 (2014)
  • Author(s): 今 孝悦 ・Udom Khrueniam・有元貴文， 吉川 尚・岡本侑樹・石川智士
  • Journal Title: 日本水産学会誌 Volume: 80 Pages: 836-836
• [Journal Article] Benthic foodweb of a salt marsh in an artificial lagoon, central Japan (2013)
  • Author(s): Koetsu Kon, Yukihiro Hoshino, Kouki Kanou, Daisuke Okazaki, Satoko Nakayama & Hiroshi Kohno
  • Journal Title: Aquatic Ecosystem Health & Management Volume: 16 Issue: 1 Pages: 40-50
  • DOI: 10.1080/14634988.2013.759502
  • Peer Reviewed
• [Presentation] 伊豆半島南部に来遊する死滅回遊魚の生息地選択 (2015)
  • Author(s): 今 孝悦・沖 隆宏
  • Organizer: 平成27年度日本水産学会春季大会
  • Place of Presentation: 東京都港区（東京海洋大学）
  • Year and Date: 2015-03-27 – 2015-03-31
• [Presentation] タイ国トラン沿岸域に形成されたHalophila ovalis海草藻場とその周囲の砂泥地における魚類群集構造の違い (2015)
  • Author(s): 堀之内正博・Prasert Tongnunui・古満啓介・今 孝悦・中村洋平・加納光樹・山口敦子・岡本 研・佐野光彦
  • Organizer: 平成27年度日本水産学会春季大会
  • Place of Presentation: 東京都港区（東京海洋大学）
  • Year and Date: 2015-03-27 – 2015-03-31
• [Presentation] The mean trophic level of set-net catch in Rayong, Thailand, based on stable isotope analysis (2015)
  • Author(s): Khrueniam U., Arimoto T., Yoshikawa T., Kon K., Okamoto Y., Ishikawa S., Phuttharaksa K., Munprasit R., and Arnupapboon S
  • Organizer: 平成27年度日本水産学会春季大会
  • Place of Presentation: 東京都港区（東京海洋大学）
  • Year and Date: 2015-03-27 – 2015-03-31
• [Presentation] Food Web Structure of Batan Bay, Panay Island, Philippines: A preliminary study using CN stable isotope analysis on fishery products (2015)
  • Author(s): Okamoto Y., Ishikawa S., Anasco N., Taberna H., Moscoso A., Nillos M., Pahila I., Ogawa Y., Kanzaki M., Kon K., Kishino T., Yoshikawa T., and Ikejima K.
  • Organizer: 平成27年度日本水産学会春季大会
  • Place of Presentation: 東京都港区（東京海洋大学）
  • Year and Date: 2015-03-27 – 2015-03-31
• [Presentation] 沖縄県石垣島のマングローブ汽水域における底生動物の群集構造と資源利用 (2015)
  • Author(s): 鈴木葉津海・今 孝悦・山田秀秋
  • Organizer: 第62回日本生態学会大会
  • Place of Presentation: 鹿児島県鹿児島市（鹿児島大学）
  • Year and Date: 2015-03-18 – 2015-03-22
• [Presentation] イボニシの餌選好性変化時期とその餌種の個体群動態の関連性 (2015)
  • Author(s): 戸祭森彦・今 孝悦
  • Organizer: 第62回日本生態学会大会
  • Place of Presentation: 鹿児島県鹿児島市（鹿児島大学）
  • Year and Date: 2015-03-18 – 2015-03-22
• [Presentation] 砂浜域における漂着海藻の機能評価 (2014)
  • Author(s): 今 孝悦・岸野友子・石川智士
  • Organizer: 第4回同位体環境学シンポジウム
  • Place of Presentation: 京都府京都市（総合地球環境学研究所）
  • Year and Date: 2014-12-22
• [Presentation] イボニシの食性から食物網の安定性を探る－餌選好性の変化に着目して－ (2014)
  • Author(s): 戸祭森彦・今 孝悦
  • Organizer: 2014年度 日本生態学会 中部地区大会
  • Place of Presentation: 長野県長野市（信州大学）
  • Year and Date: 2014-12-06
• [Presentation] ホンヤドカリにおける繁殖戦略の可塑的な変化 (2014)
  • Author(s): 小玉将史・戸祭森彦・今 孝悦
  • Organizer: 2014年度 日本生態学会 中部地区大会
  • Place of Presentation: 長野県長野市（信州大学）
  • Year and Date: 2014-12-06
• [Presentation] Distribution of juvenile shrimps and fishes in abandoned fishponds in Batan Bay estuary, Philippines: A preliminary analysis with potential natural disturbance (2014)
  • Author(s): Ikejima K., Takeuchi K., Kon K., Yoshikawa T., Anasco N., and Ishikawa S.
  • Organizer: International Scientific Conference on Fisheries and Aquatic Sciences: Towards disaster and climate resilience.
  • Place of Presentation: Iloilo, Philippines
  • Year and Date: 2014-10-22 – 2014-10-23
• [Presentation] Effects of Species Composition on the Prey Preference of the Muricid Snail, Thais (Reishia) clavigera (2014)
  • Author(s): Tomatsuri M., and Kon K
  • Organizer: The 2nd Asian Marine Biology Symposium 2014
  • Place of Presentation: Jeju, Korea
  • Year and Date: 2014-10-01 – 2014-10-04
• [Presentation] he first report of the genus Cephaloecetes Just, 2012 (Crustacea: Amphipoda: Ischyroceridae), from the coastal shallow bottom of Izu Peninsula, central Japan. (2014)
  • Author(s): Kodama M., and Kon K
  • Organizer: The 2nd Asian Marine Biology Symposium 2014
  • Place of Presentation: Jeju, Korea
  • Year and Date: 2014-10-01 – 2014-10-04
• [Presentation] 平均栄養段階によるタイ国定置網のインパクト評価 - Selective fishing vs. Balanced harvesting (2014)
  • Author(s): 有元貴文・Khrueniam U.・Manajit N.・吉川 尚・今 孝悦・岡本祐樹・石川智士
  • Organizer: 平成26年度日本水産学会秋季大会
  • Place of Presentation: 福岡県福岡市（九州大学）
  • Year and Date: 2014-09-19 – 2014-09-22
• [Presentation] Enrichment factor examination with stable isotope analysis for trophic level of set-net catch in Rayong, Thailand. (2014)
  • Author(s): Khrueniam U., Arimoto T., Yoshikawa T., Kon K., Okamoto Y., Yap M., Ishikawa S., Phuttharaksa K., Munprasit R., and Arnupapboon S.
  • Organizer: 平成26年度日本水産学会秋季大会
  • Place of Presentation: 福岡県福岡市（九州大学）
  • Year and Date: 2014-09-19 – 2014-09-22
• [Presentation] 種組成はイボニシの餌選好性に影響を与え得るか (2014)
  • Author(s): 戸祭森彦・今 孝悦
  • Organizer: 2014年度日本プランクトン学会・日本ベントス学会合同大会
  • Place of Presentation: 広島県東広島市（広島大学）
  • Year and Date: 2014-09-04 – 2014-09-07
• [Presentation] Impacts of allochthonous inputs on benthic faunal community in estuarine sand-flat (2014)
  • Author(s): Kon K.
  • Organizer: Seminar on Japanese-type set-net introduction and its possible impacts on the food chain structure in Rayong, Thailand
  • Place of Presentation: Shizuoka, Japaｎ(Shimoda Marine Research Center, University of Tsukuba)
  • Year and Date: 2014-06-29 – 2014-06-30
• [Presentation] Trophic level estimation of the set-net catch by stable isotope analysis in Rayong, Thailand. (2014)
  • Author(s): Khrueniam U., Arimoto T., Yoshikawa T., Kon K., Okamoto Y., Yap M., Ishikawa S., Phuttharaksa K., Munprasit R., Laongmanee P., and Arnupapboon S.
  • Organizer: Seminar on Japanese-type set-net introduction and its possible impacts on the food chain structure in Rayong, Thailand
  • Place of Presentation: Shizuoka, Japaｎ (Shimoda Marine Research Center, University of Tsukuba)
  • Year and Date: 2014-06-29 – 2014-06-30
• [Presentation] Spatial-temporal food web structure of bivalves aquaculture in Bandon bay, Southern Thailand, using carbon and nitrogen stable isotope analysis. (2014)
  • Author(s): Okamoto Y., Kon K., Watanabe K., Yoshikawa T., Salaenoi J., and Ishikawa S.
  • Organizer: Seminar on environmental studies in Bandon Bay, Surat Thani, Thailand.
  • Place of Presentation: Shizuoka, Japan (Tokai University)
  • Year and Date: 2014-05-18
• [Presentation] Mean trophic level analysis as indicator for balanced harvesting - Cast study on Japanese-type set-net, in Thailand. (2014)
  • Author(s): Arimoto T., Khrueniam U., Yoshikawa T., Kon K., Okamoto Y., Ishikawa S., Phuttharaksa K., Munprasit R., Manajit N., Amornpiyacrit T., Yingyuad W., and Munprasit A.
  • Organizer: ICES-FAO Working Group on Fishing Technology and Fish Behaviour
  • Place of Presentation: Massachusetts, USA
  • Year and Date: 2014-05-04 – 2014-05-10
• [Presentation] Preliminary survey on food-web structure and water characteristics of bivalve aquaculture area in Bandon bay, Surat Thani province, Thailand. (2014)
  • Author(s): Okamoto Y., Kon K., Watanabe K., Yoshikawa T., Salaenoi J., and Ishikawa S.
  • Organizer: WESTPAC 9th International Scientific Symposium
  • Place of Presentation: Nha Trang, Vietnam
  • Year and Date: 2014-04-22 – 2014-04-25
• [Presentation] タイ・ラヨーン沿岸における定置網漁獲物の栄養段階 (2014)
  • Author(s): 今 孝悦・Udom Khrueniam・有元貴文・吉川尚・岡本侑樹・石川智士
  • Organizer: 成26年度日本水産学会春季大会ミニシンポジウム「微量元素・同位体を指標とした沿岸域の物質動態研究の現状と展望」
  • Place of Presentation: 北海道大学
  • Invited
• [Presentation] タイ南部バンドン湾の貝類養殖域における食物網構造 (2014)
  • Author(s): 岡本侑樹・石川智士・今 孝悦・渡邉一哉・吉川尚・Jintana Salaenoi
  • Organizer: 成26年度日本水産学会春季大会ミニシンポジウム「微量元素・同位体を指標とした沿岸域の物質動態研究の現状と展望」
  • Place of Presentation: 北海道大学
  • Invited
• [Presentation] 漂着海藻は砂浜生物の群集構造に影響するのか？ (2014)
  • Author(s): 岸野友子・今 孝悦
  • Organizer: 平成26年度日本水産学会春季大会
  • Place of Presentation: 北海道大学
• [Presentation] Trophic level estimation of the set-net catch in Rayong, Thailand, based on stable isotope analysis of muscle tissues and stomach contents. (2014)
  • Author(s): Khrueniam U., Arimoto T., Yoshikawa T., Kon K., Okamoto Y., Yap M., Ishikawa S., Phuttharaksa K., Munprasit R., Laongmanee P., and Arnupapboon S
  • Organizer: The 2014 spring meeting of the Japanese Society of Fisheries Science
  • Place of Presentation: Hokkaido University, Hokkaido, Japan
• [Presentation] マングローブ河口域における底生動物群集の資源利用 (2014)
  • Author(s): 鈴木葉津海・今 孝悦・山田秀秋
  • Organizer: 第61回日本生態学会大会
  • Place of Presentation: 広島国際会議場
• [Presentation] イボニシ Thais (Reishia) clavigera の食性から食物網のレジリエンスを探る (2014)
  • Author(s): 戸祭森彦・今 孝悦
  • Organizer: 第61回日本生態学会大会
  • Place of Presentation: 広島国際会議場
• [Presentation] The first record of female maturation of shot finned eel, Anguilla bicolor bicolor in coastal waters of Thailand (2014)
  • Author(s): Tongnunui P., Yoknoi N., Pechnoi P., Yamada H., and Kon K.
  • Organizer: Asian Fish Biodiversity Conference 2014
  • Place of Presentation: Gurney Resort Hotel and Residences, Penang, Malaysia
• [Presentation] 河口域における底生動物群集の食物網構造の推定 (2013)
  • Author(s): 今 孝悦・石川智士
  • Organizer: 第3回同位体環境学シンポジウム
  • Place of Presentation: 総合地球環境学研究所
• [Presentation] Trophic level analysis of set-net catch species, in comparison with environmental levels in Rayong, Thailand (2013)
  • Author(s): Khrueniam U., Arimoto T., Yoshikawa T., Kon K., Okamoto Y., Minlee Y., Ishikawa S., Phuttharaksa K., Munprasit R., Laongmanee P., and Arnupapboon S.
  • Organizer: The 3rd symposium on isotope environmental studies
  • Place of Presentation: Research Institute for Humanity and Nature, Kyoto, Japan
• [Presentation] Stable isotope analysis of set-net catch in Rayong, Thailand (2013)
  • Author(s): Khrueniam U., Arimoto T., Yoshikawa T., Kon K., Okamoto Y., Minlee Y., Ishikawa S., Phuttharaksa K., Munprasit R., and Laongmanee P.
  • Organizer: The 2013 autumn meeting of the Japanese Society of Fisheries Science
  • Place of Presentation: Mie University, Mie, Japan
• [Presentation] 東日本大震災によって新浜湖の塩性湿地魚類群集に生じた変化 (2012)
  • Author(s): 加納光樹・中山聖子・碓井星二・金子誠也・百成 渉・風呂田利夫・柚原 剛・今 孝悦
  • Organizer: 2012年度日本魚類学会年会
  • Place of Presentation: 下関（水産大学校）
• [Presentation] 汽水域の生息環境回復［陸と海の境界：塩生湿地］ (2012)
  • Author(s): 加納光樹・ 中山聖子・風呂田利夫・今 孝悦・小林 光
  • Organizer: 第6回東京湾海洋環境シンポジウム「東京湾再生の将来ビジョン」
  • Place of Presentation: 東京（東京海洋大学）
• [Presentation] Do allochthonous inputs represent an important food resource for benthic macrofaunal communities in estuarine mudflats? (2012)
  • Author(s): Kon K., Tongnunui P., Kawamura T., and Kurokura H.
  • Organizer: The First Asian Marine Biology Symposium
  • Place of Presentation: Phuket, Thailand
• [Presentation] 河口域から読み解く生態系の繋がり
  • Author(s): 今孝悦
  • Organizer: 第11回環境研究シンポジウム
  • Place of Presentation: 学術総合センター