Stoichiometric effects of pCO_2 on aquatic communities

• Project/Area Number: 15370010
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Tohoku University
• Principal Investigator: URABE Jotaro Tohoku University, Graduate School of life sciences, Professor, 大学院・生命科学研究科, 教授 (50250163)
• Co-Investigator(Kenkyū-buntansha): HINO Shuji Yamagata University, Faculty of Science, Associate Professor, 理学部, 助教授 (10272056) ; BAN Shuhei University of Shiga Prefecture, Environmental Sciences, Associate Professor, 環境科学部, 助教授 (50238234) ; CHIBA Satoshi Tohoku University, Graduate School of life sciences, Associate Professor, 大学院・生命科学研究科, 助教授 (10236812)
• Project Period (FY): 2003 – 2005
• Project Status: Completed (Fiscal Year 2005)
• Budget Amount: ¥15,200,000 (Direct Cost: ¥15,200,000); Fiscal Year 2005: ¥3,200,000 (Direct Cost: ¥3,200,000); Fiscal Year 2004: ¥5,500,000 (Direct Cost: ¥5,500,000); Fiscal Year 2003: ¥6,500,000 (Direct Cost: ¥6,500,000)
• Keywords: lakes / carbon dioxide / plankton / watershed / Dissolved organic carbon / ecosystems / carbon budget / biological community / CO_2 / 溶存炭素有機物 / CO2

Research Abstract

The present study was performed to clarify (1) how land use/cover in the watershed affects on pCO2 in lake ecosystems, (2) how changes in pCO2 affects zooplankton communities through changes in species composition, abundance and stoichiometry of planktonic algae, and then (3) how local and global environmental changes influence on aquatic communities in lakes through these stoichiometric effects of pCO2. For these, we first examined limnological and biological characteristics of 48 lakes located at east-north area in Japan with GIS analyses on the watershed of these lakes. The analyses revealed that pCO2 in the lakes varied over 5 orders magnitude and highly related with land cover of vegetation in the watershed, water depth and food web structures, suggesting that effects of changes in land use and atmospheric pCO2 on lake carbon metabolisms differ depending on the basin morphometry and biota.
To examine changes of pCO2 to aquatic communities, laboratory experiments with manipulation of pCO2 in water were made using several taxonomic group of algal plankton as primary producers and Daphnia as consumers. The experiments showed that algal competitive interactions differed depending on pCO2 and nutrient supplies. In any experiments with single algal species, increase of pCO2 increased algal abundance but decreased growth rate of consumers due to decrease in specific nutrient contents of the algal food. However, in experiments with multiple algal species, increase of pCO2 also increased algal abundance but did not decrease growth rate of consumers, probably due to complementary effects in nutrition of algae. These results suggest that algal species diversity functions to mitigate negative effects of increased pCO2 on community structures and mass transfer efficiency in lake ecosystems.

Research Products

• [Journal Article] Metabolic Stoichiometry and the fate of excess carbon and nutrients in consumers (2005)
  • Author(s): Anderson, T.R., D.O.Hessen, J.J.Elser, J.Urabe
  • Journal Title: American Naturalist 165 Pages: 1-15
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] The production-to-respiration ratio and its implication in Lake Biwa, Japan. (2005)
  • Author(s): Urabe J.他
  • Journal Title: Ecological Research 143 Pages: 537-547
  • NAID: 130007012737
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Genotype x environment interactions, stoichiometric food quality effects, and clonal coexistence in Daphnia pulex. (2005)
  • Author(s): Weider, L.J., W.Makino, K.Acharya, K.L.Glenn, M.Kyle, J.Urabe, J.J.Elser
  • Journal Title: Oecologia 143 Pages: 537-547
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Ontogenetic changes in vertical distribution of an endemic amphipod, Jesogammarus annandalei, in Lake Biwa, Japan. (2005)
  • Author(s): Ishikawa, T., J.Urabe
  • Journal Title: Arch. Hydrobiol 164 Pages: 465-478
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Colloquium on diatom-copepod interactions. (2005)
  • Author(s): Ban, S.他
  • Journal Title: Mar. Ecol. Prog. Ser 286 Pages: 645-654
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] 大規模野外操作実験の意味と意義 (2005)
  • Author(s): 田中健太, 占部城太郎
  • Journal Title: 日本生態学会誌 55 Pages: 494-496
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] The production-to-respiration ratio and its implication in Lake Biwa, Japan. (2005)
  • Author(s): Urabe J., T.Yoshida, T.B.Gurung, T.Sekino, N.Tsugeki, K.Nozaki, M.Maruo, E.Nakayama, M.Nakanishi.
  • Journal Title: Ecological Research 20 Pages: 367-375
  • NAID: 130007012737
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Ontogenetic changes in vertical distribution of an endemic amphipod, Jesogammarus annandalei, in Lake Biwa, Japan. (2005)
  • Author(s): Ishikawa, T., J.Urabe
  • Journal Title: Arch.Hydrobiol. 164 Pages: 465-478
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Colloquium on diatom-copepod interactions. (2005)
  • Author(s): Paffenhofer, G.A., A.Ianora, A.Miralto, J.T.Turner, G.S.Kleppel, M.Ribera, dEUAlcala, R.Casotti, G.S.Caldwell, G.Pohnert, A.Fontana, D.Muller-Navarra, S.Jonasdottir, V.Armbrust, U.Bamstedt, S.Ban, M.G.Bentley, M.Boersma, M.Bundy, I.Buttino, A.Calbet, F.Carlotti, Y.Carotenuto, G.dEUIppolito, B.Frost, C.Guisande, W.Lampert, R.F.Lee, S.Mazza, M.G.Mazzocchi, J.C.Nejstgaard, S.A.Poulet, G.Romano, V.Smetacek, S.Uye, S.Wakeham, S.Watson, T.Wichard
  • Journal Title: Mar.Ecol.Prog.Ser. 286 Pages: 293-305
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Perspectives forward development of large-scale field experiment in Japan. (in Japanese) (2005)
  • Author(s): Tanaka, K., J.Urabe
  • Journal Title: Japanese Journal of Ecology 55 Pages: 524-529
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] The production-to-respiration ratio and its implication in Lake Biwa, Japan. (2005)
  • Author(s): Urabe J. 他
  • Journal Title: Ecological Research 20 Pages: 367-375
  • NAID: 130007012737
• [Journal Article] Ontogenetic changes in vertical distribution of an endemic amphipod, Jesogammarus annandalei, in Lake Biwa, Japan. (2005)
  • Author(s): Ishikawa, T., J.Urabe
  • Journal Title: Arch.Hydrobiol 164 Pages: 465-478
• [Journal Article] 大規模野外操作実験の意味と意義 (2005)
  • Author(s): 占部城太郎, 田中健太
  • Journal Title: 日本生態学会誌 55 Pages: 494-496
• [Journal Article] 日本の大規模野外操作実験の展望 (2005)
  • Author(s): 田中健太, 占部城太郎
  • Journal Title: 日本生態学会誌 55 Pages: 524-529
• [Journal Article] Metabolic Stoichiometry and the fate of excess carbon and nutrients in consumers (2005)
  • Author(s): Anderson, T.R, D.O.Hessen, J.J.Elser, J.Urabe
  • Journal Title: Am.Nat 165 Pages: 1-15
• [Journal Article] Long-term changes in the abundance of Jesogammarus annandalei (Tattersall) in Lake Biwa. (2004)
  • Author(s): Ishikawa, T., T.Narita, J.Urabe
  • Journal Title: Limnol.Oceanogr 49 Pages: 1840-1847
• [Journal Article] Seasonal changes in silicon contents of diatoms analogized from the ratio of particle silicon to diatom standing crop under silicon sufficiency in the diatoms-rich Lake Barato. (2004)
  • Author(s): K.Takano, S.Igarashi, S.Hino
  • Journal Title: Limnology 5 Pages: 115-120
• [Journal Article] Hydration structure around the carboxyl group studied by neutron diffraction with ^<12>C/^<13>C and H/D isotopic substitution methods. (2004)
  • Author(s): Y, Janedam, S, Gubim et ak
  • Journal Title: Journal.of Solution Chemistry 33 Pages: 729-741
• [Book] 地球環境と生態系 : 陸域生態系の科学 (2006)
  • Author(s): 武田博清, 占部城太郎
  • Total Pages: 267
  • Publisher: 共立出版
  • Description: 「研究成果報告書概要(和文)」より
• [Book] Land Ecosystem Sciences under Global Changes. (in Japanese) (2006)
  • Author(s): Takeda, H., J.Urabe (eds)
  • Total Pages: 267
  • Publisher: Kyoritsu Shuppan
  • Description: 「研究成果報告書概要(欧文)」より
• [Book] The geology, Biodiversity and Ecology of Hovsgol (Mongolisa), Chapter 24 Some biological and chemical characteristics of Lake Hovsgol. (2006)
  • Author(s): Urabe J.他(分担執筆)
  • Publisher: Backhuys Publishers, Leiden
• [Publications] Urabe, J.: "Stoichiometric impacts of increased carbon dioxide on a planktonic herhivore"Global Change Biology. 9. 818-825 (2003)
• [Publications] 占部城太郎: "プランクトン群集の栄養動態と環境変化の化学量効果"日本プランクトン学会誌. 50. 91-98 (2003)
• [Publications] Ban, S.: "Stay cool : Habitat selection of a cyclopoid copepod in a north temperate oligotrophic lake"Freshwater Biol. 50. 1551-1562 (2003)
• [Publications] Ban, S.: "Microbial communities in oligotrophic Lake Toya, Japan"Limnology. 4. 19-24 (2003)
• [Publications] Hino, S.: "Seasonal dynamics of carbon stable isotope ratios of particulate organic matter and benthic diatoms in strongly acidic Lake Katanuma"Freshwater Biol. 33. 87-94 (2003)
• [Publications] Hino, S.: "Causation of reversal simultaneity for diatom biomass and density of Phormidium tenue"Aquatic Microbial Ecology. 4. 73-78 (2003)