(Upload on December 20 2009) [ 日本語 | English ]

Seminars (Beadroll)

Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Related lectures [ Ecology and global warming | Advanced course in environmental conservation ]

Carbon dynamics on terrestrial ecosystems

Formerly: Carbon dynamics viewing through volcanoes and wetlands

Up-to-date information

[ Schedule | References | Japanese page (日本語版) ]

Main theme "Assessment of Global Warming"

The subject "Global warming assessment" has the following seminars, to deeply understand mechanisms on global warming.
(1) Seminar on Global Warming: The main objectives are to communicate each research theme and preliminary practice for Division Seminar. Irregular date
(2) Sub-subject seminar: To understand global warming in relation to the research subject of each graudate student. The sub-seminar held by Tsuyuzaki is as follows.

Sub-theme: Carbon dynamics on terrestrial ecosystems

Date: Second term (weekly) Field workers do not hold seminars in summer!

Key words: restoration of wetland ecosystems, field work, methane emission and global warming

Study cases

Detecting the key of Sphagnum wetland restoration after peat mining on Sarobetsu wetland
Estimating primary production after intense wildfire in Alaska
Measuring seasonal changes in methane flux and peat decomposition in wetlands
Evaluating ecosystem development and carbon accumulation after volcanic eruptions on Mount Usu and Mount Koma


Date and hour Content Venue
April 14 2009 (Tue) 13:00- Guidance A804
Oct 1 2009 (Thu) 13:00- Introduction and planning Q203, Fac. Eng.
Paper presentation Research progress
Oct 8 2009 (Thu) 13:00- Tsuyuzaki Hoyo Q203, Fac. Eng.
Oct 15 2009 (Thu) 13:00- Takeuchi Hirata Q203, Fac. Eng.
Oct 29 2009 (Thu) 13:00- Hoyo Yoshida Q203, Fac. Eng.
Nov 5 2009 (Thu) 13:00- Hirata Takeuchi Q203, Fac. Eng.
Nov 12 2009 (Thu) 13:00- Yoshida Hoyo Q203, Fac. Eng.
Nov 19 2009 (Thu) 13:00- Practice for mid-term presentation Q203, Fac. Eng.
Nov 26 2009 (Thu) 13:00- Practice for mid-term presentation Q203, Fac. Eng.
Dec 3 2009 (Thu) 13:00- Takeuchi Hirata Q203, Fac. Eng.
Dec 10 2009 (Thu) 13:00- Hoyo Yoshida Q203, Fac. Eng.
Dec 17 2009 (Thu) 13:00- Hirata Takeuchi Q203, Fac. Eng.
Dec 24 2009 (Thu) 13:00- Yoshida Tsuyuzaki Q203, Fac. Eng.

Papers read in the seminar


Oct. 8
  • Mesgaran MB, Mashhadi HR, Zand E & Alizadeh HM. 2007. Comparison of three methodologies for efficient seed extraction in studies of soil weed seedbanks. Weed Research 47: 472-478.
Oct. 15
  • Hobbie EA, Jonson MG, Rygiewitz RT, Tingey DT & Olszyk DM. 2004. Isotopic estimates of new carbon inputs into litter and sol in a four-year climate changebexperiment with Douglas-fir. Plant and Soil 259: 331-343.
Oct. 30
  • Walck JL, Baskin CC, Hidayati SN & Baskin JM. 2008. Comparison of the seed germination of native and non-native winter annual Apiaceae in North America, with particular focus on Cyclospermum leptophyllum naturalized from South America. Plant Species Biology 23: 33-42
Nov. 5
  • Newsham KK, & Robinson SA. 2009. Responses of plants in polar regions to UVB exposure: a meta-analysis. Global Change Biology 15: 2574-2589
Nov. 12
  • Oberhuber W & Kofler W. 2000. Topographic influences on radial growth of Scots pine (Pinus sylvestris L.) at small spatial scales. Plant Ecology 146: 231-240
Dec. 3
  • Throop HL & Archer SR. 2007. Interrelationships among shrub encroachment, land management, and litter decomposition in a semidesert grassland. Ecological Applications 17: 1809-1823
Dec. 10
  • Spitale D. 2009. Switch between competition and facilitation within a seasonal scale at colony level in bryophytes. Oecologia 160: 471-482
Dec. 17
  • Krause GH, Grube E, Koroleva OY, Barth C & Winter K. 2004. Do mature shde leaves of tropical tree seedlings acclimate to high sunlight and UV radiation? Functional Plant Biology 31: 743-756
Dec. 24
  • Henderson JP, Grissino-Mayer HD. 2009. Climate-tree growth relationships of longleaf pine (Pinus palustris Mill.) in the Southeastern Coastal Plain, USA. Dendrochronologia 27: 31-43


Oct. 10
  • Tsuyuzaki S., Kushida K. & Kodama Y. 2009. Recovery of surface albedo and plant cover after wildfire in a Picea mariana forest in interior Alaska. Climatic Change 93: 517-525
  • Osono T, Takeda A & Azuma J. 2008. Carbon isotope dynamics during leaf litter decomposition with reference to lignin fractions. Ecological Research 23: 51-55
Oct. 17
  • Wolf EC, Gage E, & Cooper DJ. 2006. Drosera anglica Huds. (English sundew): a technical conservation assessment. USDA Forest Service, Rocky Mountain Region [Online Version]
  • Baumeister D & Callaway RM. 2006. Facilitation by Pinus flexilis during succession: A hierarchy of mechanisms benefits other plant species. Ecology 87:1816-1830
Oct. 24
  • Smith JL, Burritt DJ & Bannister P. 2000. Shoot dry weight, chlorophyll and UV-B-absorbing compounds as indicators of a plant's sensitivity to UV-B radiation. Annals of Botany 86: 1057-1063
  • Yurkonis KA & Meiners SJ. 2004. Invasion impacts local species turnover in a successional system. Ecology Letters 7: 764-769
Oct. 31
  • Nadelhoffer KJ, Emmett BA, Gundersen P, Kjonaas OJ, Koopmans CJ, Schleppi P, Tietema A & Wright RF. 1999. Nitrogen deposition makes a minor contribution to carbon sequestration in temperate forests. Nature 398: 145-148
  • Gillespie IG & Allen EB. 2004. Fire and competition in a southern California grassland: Impacts on the rare forb Erodium macrophyllum. Journal of Applied Ecology 41: 643-652
Nov. 31
  • Cox RD & Allen EB. 2008. Composition of soil seed banks in southern California coastal sage scrub and adjacent exotic grassland. Plant Ecology 198: 37-46
  • Sparks JP, Walker J, Turnipseed A & Guenther A. 2008. Dry nitrogen deposition estimates over a forest experiencing free air CO2 enrichment. Global Change Biology 14: 768-781
Dec. 5
  • Donath TW & Eckstein RL. 2008. Grass and oak litter exert different effects on seedling emergence of herbaceous perennials from grasslands and woodlands. Journal of Ecology 96: 272-280
  • Pancotto VA, Sala OE, Robson TM, Caldwell MM & Scopel AL. 2005. Direct and indirect effects of solar ultraviolet-B radiation on long-term decomposition. Global Change Biology 11: 1982-1989
Dec. 12
  • Ashton IW, Hyatt LA, Howe KM, Gurevitch J & Lerdau MT. 2005. Invasive species accelerate decomposition and litter nitrogen loss in a mixed deciduous forest. Ecological Applications 15: 1263-1272
  • Nordbakken J-F, Rydgren K & Okland RH. 2004. Demography and population dynamics of Drosera anglica and D. rotundifolia. Journal of Ecology 92: 110-121
Dec. 19
  • Rinnan R, Meinanen MM, Kasurinen A, Asikainen J, Kekki T, Holopainen T, Ro-Poulsen H, Mikkelsen TN & Michelsen A. 2005. Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass. Global Change Biology 11: 564-574
  • Gonzalez S & Ghermandi L. 2008. Postfire seed bank dynamics in semiarid grasslands. Plant Ecology 199: 175-185