（Relationship between community structure of flower visiting insects and flowering structure of plant communities along the forest-alpine ecotone in a cool-temperate ecosystem）
主査：工藤 岳
副査：甲山 隆司、露崎 史朗、高田 壮則
日時：２／１（金） １４：４５～
発表者：福井 翔
論文題目：Mechanisms of sustainable introgressive hybridization between native white-spotted charr (Salvelinus leucomaenis) and non-native brook trout (S. fontinalis)
（外来カワマスと在来アメマスにおける浸透交雑の存続機構）
主査：小泉 逸郎
副査：高田 壮則、野田 隆史、森田 健太郎（北海道区水産研究所）
日時：２／１（金） １６：３０～
発表者：内田 健太
論文題目：The town squirrel and the country squirrel : multiple behavioral comparisons in Eurasian red squirrel between two environments
講演タイトル：Strategies and resource acquisition of ectomycorrhizal fungi and wood decay fungi in forest ecosystems
(In English)
We will have a seminar by Dr. Erik Hobbie. He studies fungal functioning by using nitrogen dynamics. I hope many people come and join us. Polycom from branch office is available. I am glad if you inform me befor when you want to attend via Polycom (we will connect to HD1).
Date: 1 October 15:00～16:00
Place: Large conferece room (1st floor) in Field Science Center for Northern Biosphere (Experiment Farm)
Title: Strategies and resource acquisition of ectomycorrhizal fungi and wood decay fungi in forest ecosystems
Abstract:
We present two case studies of fungal functioning in forest ecosystems. In the first, we investigated functional differences in six taxa of decay fungi during a long-term log decomposition study (Oregon, USA) by studying elemental, isotopic, and compositional patterns in wood, cellulose, and sporocarps. Partitioning between protein and non-protein pools in mycelia prior to sporocarp formation controlled sporocarp δ15N relative to N sources. Radiocarbon measurements separated fungi into heartwood colonizers (Fomitopsis and Hericium, ~60-year-old carbon) and sapwood colonizers (Mycena (7 years), Hypholoma (11 years), and Trametes (11 years). Mycena and Hypholoma appeared to assimilate some 13C-enriched sucrose in sapwood rather than just cellulose. The six taxa varied widely in their chemical composition, as assessed by pyrolysis GC-MS; these compositional differences correlated with functional growth strategies. From these measurements, we improved the quantitative and conceptual understanding of functional differences of wood decay fungi. In the second study, we assessed how nitrogen (N) availability affected ectomycorrhizal functioning in two long-term (6-40 years) N addition experiments in Pinus sylvestris stands in Sweden. Sporocarp production declined dramatically with N fertilization but recovered slowly after fertilization stopped. Both sporocarp C/N and soil C/N increased with fertilization, implying that N uptake per unit fungal growth increased and then declined after fertilization had stopped. Fungal and soil d15N patterns across treatments identified fungal N sources, with N acquisition primarily from the S horizon for Paxillus involutus and Suillus variegatus, from the F horizon for four Cortinarius taxa and Lactarius rufus, and from the H horizon for Cortinarius traganus and Russula aeruginea. Taxa with proteolytic capabilities were particularly sensitive to N fertilization. These analyses illustrated that responses of fungal taxa across these fertilization gradients depended on the horizon of N acquisition and on N acquisition strategies.
A Lecture on diversity biology in English is scheduled in the coming term. All graduate students are welcome.
# Cross-Division Lecture
# Open lecture for all graduate schools
Primer of Diversity Biology
“Biosphere Diversity Science”
Room D102, Graduate School of Environmental Science
14:45 – 16:15, Wednesday and Friday
From October 3 to November 28
(Note: no class on Nov. 21, Nov. 23)
[Objectives]
Biosphere covers heterogeneous substrates on Earth. This lecture provides
overview of various ecosystems in land and ocean, by around a dozen lecturers in Graduate School of Environmental Science dealing with unique target ecosystem and biological communities.
Lecturers focus on (1) biodiversity, (2) ecosystem function, and (3) their response to environmental change.caused by human activities.
[Goals]
Through this lecture, students are expected to achieve a whole-planet scale understanding of unique Earth biota, of which heterogeneity and diversity. It thus allows to image the ongoing effect of climate change on the ecosystem functioning and biodiversity on the Earth.
論文題目：Using recombinant E. coli displaying surface heavy metal binding proteins for removal of Pb2+ from contaminated water
（汚染水からの鉛除去のための表在性重金属結合タンパク質提示組換え大腸菌の利用）
主査：山崎 健一
副査：森川 正章、鈴木 仁
日時：７／１９（木）１５：００～
場所：Ｄ２０１
発表者：相原 いづみ
論文題目：Boron-dependent posttranscriptional regulation of a borate transporter BOR1 and its physiological significance in Arabidopsis thaliana
（シロイヌナズナにおけるホウ酸輸送体BOR1のホウ素濃度依存的な転写後制御とその生理的意義）
主査：三輪 京子
副査：森川 正章、山口 良文、山崎 健一、佐藤 長緒（大学院理学研究院）
日時：７/２０（金）１３：３０～
場所：Ｄ２０１
発表者：鈴木 将太
論文題目：Evolutionary ecological study on lineage longevity of Hexagrammos hemiclonal hybrids: two-way backcrossing, recombination through occasional generation changes and synthesis of renewed hemiclone
日時：１／２３（火）１４：００～
発表者：陳 磊
論文題目：Dynamics of different branching units in crowns of Sakhalin spruce, Picea glehnii (F.Schmidt) Mast.
（アカエゾマツPicea glehnii (F. Schmidt) Mast.の樹冠における異なる分枝ユニットの動態）
主査：隅田 明洋
副査：原 登志彦、甲山 隆司、日浦 勉
日時：１/２４（水）１１：００～
発表者：岩崎 藍子
論文題目：Quantifying intensity and severity of natural disturbances: a case study of the impact of the 2011 Tohoku Earthquake Tsunami on rocky intertidal community
（自然撹乱の強度と影響度の定量：東北地方太平洋沖地震による津波が岩礁潮間帯生物群集に及ぼしたインパクトについての事例研究）
主査：野田 隆史
副査：高田 壮則、仲岡 雅裕、小泉 逸郎
日時：１／２４（水）１３：００～
発表者：金森 由妃
論文題目：Spatial variation in community dynamics in intertidal sessile assemblages
(岩礁潮間帯固着生物群集における群集動態の空間変異)
主査：野田 隆史
副査：高田 壮則、仲岡 雅裕、小泉 逸郎
日時：１／２４（水）１４：３０～ ※Ｄ２０１教室, ポリコム使用
発表者：山崎 千登勢 （論文博士）
論文題目：ヤツメウナギの繁殖生態：乱婚におけるオスの造巣行動とメスの配偶者選択に着目して
（Reproductive ecology of promiscuous lampreys focusing on male nest-building behavior and female mate choice）
主査：小泉 逸郎
副査：高田 壮則、野田 隆史、宗原 弘幸
日時：１／２５（木）１５：３０～
発表者：大原 隆之
論文題目：Mathematical models of the plant circadian clock: impact of phase regulation by sugar on plant growth
(植物概日時計の数理モデル: 糖による位相応答が成長に及ぼす影響）
主査：甲山 隆司
副査：原 登志彦、三輪 京子、秋山 正和（電子科学研究所）、佐竹 暁子（九州大学理学研究院）
日時：１／３０（火）１３：００～ ※ポリコム使用
発表者：富安 信
論文題目：バイオロギングシステムを用いた太平洋ニシンの産卵回遊に関する研究
（Study on spawning migration of pacific herring Clupea pallasii using bio-logging system）
主査：宮下 和士
副査：仲岡 雅裕、三谷 曜子、南 憲吏（島根大学エスチュアリー研究センター）
日時：１／３１（水）１３：００～
発表者：梅澤 和寛
論文題目：Genomic and proteomic study of dissimilatory sulfur metabolism
(ゲノミクスおよびプロテオミクスによる異化的硫黄代謝の研究)
主査：福井 学
副査：森川 正章、小島 久弥、寺島 美亜
Organized taking the opportunity that Claire de Mazancourt, I Fang Sun and Michel Loreau are in Sapporo. Everyone welcome!
11:30-12:00
Claire de Mazancourt
(French National Centre for Scientific Research, Paris)
“Invariability: measuring and understanding the effect of biodiversity on ecosystem stability”
12:00-13:00
Lunch break @Room A807
13:00-13:40
I Fang Sun
(National Dong Hwa University, Hualien; EES Hokkaido University)
“Plant reproductive decision-making and its consequence in a changing world: insights from a subtropical rain forest”
13:40-14:00
Osamu Kishida (FSC Hokkaido University)
“Growth of larval salamanders determines trophic interactions in a pond community”
14:00-14:20
Yoshio Masuda (EES Hokkaido University)
“A solution for Hutchinson’s paradox in simulated 3D oceanic
environments: coexistence of several dozens of similar phytoplankton
species at a point”
14:20-14:40
Shigeo Yachi (CER Kyoto University)
“How community-based ecosystem restoration can guarantee watershed-scale sustainability: origins and overcoming of scale mismatches in social-ecological dynamics”
14:40-15:20
Tea break @A807
15:20-15:40
Makoto Kobayashi (FSC Hokkaido University)
“Feeding behavior of detritivore determines the plant and soil response to climate warming”
15:40-16:00
Masahiro Nakamura (FSC Hokkaido University)
“Global warming effects on insect-plant interactions in tall trees of
northern forest”
16:00-16:20
Gaku Kudo (EES Hokkaido University)
“Expansion of dwarf bamboo in Japanese alpine ecosystems and its impact on biodiversity”
16:20 -17:00
Michel Loreau
(Theoretical and Experimental Ecology Station CNRS, Moulis)
“Linking biodiversity, ecosystems, and people across scales: challenges for ecology and sustainability”
17:00-17:30
Closing discussion
No registration required. We would appreciate your (while not students.) small donation for lunch and tea.
