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2006 Fiscal Year Final Research Report Summary

Studies on plant population viability by long-term monitoring and demographic genetics and conservation

Research Project

Project/Area Number 16370007
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Ecology/Environment
Research InstitutionHokkaido University

Principal Investigator

OHARA Masashi  Hokkaido Univ., Faculty of Env.Earth Sci., Prof., 大学院地球環境科学研究院, 教授 (90194274)

Co-Investigator(Kenkyū-buntansha) KUDO Gaku  Hokkaido Univ., Faculty of Env.Earth Sci., Asso.Prof, 大学院地球環境科学研究院, 助教授 (30221930)
TAKADA Takenori  Hokkaido Univ., Faculty of Env.Earth Sci., Prof., 大学院地球環境科学研究院, 教授 (80206755)
WADA Naoya  Toyama Univ., Fac.of Sci., Asso.Prof, 理学部, 助教授 (40272893)
Project Period (FY) 2004 – 2006
Keywordslong-tem monitoring / population / demographic genetics / perennial plants / viability / conservation
Research Abstract

In 1996, IUCN proposed new categories for the Red list. In the new criteria defined by IUCN, 'threatened' species are classified into the three categories. These categories are based largely on population biology principles. For defining endangerment, each category requires assessment of the probability of extinction and the generation time of focal species and populations. To assess the persistence of different populations, it is essential to understand integrated aspects of demography, reproductive biology and genetics, that is, life history features. Although the amount of scientific information on the conservation of threatened plants has increased enormously, we are still lacking essential data to enable us to assess the consequence of changing both genetic and demographic processes for population viability.
In the present project, we focused on the impact of demographic vital rates to understand the importance of genetics and reproductive biology, using long-tem demographic data. Long-term demographic studies is essential for making a realistic simulation model of population dynamics, preferably including information on levels of environmental stochasticity.
We concluded that integration of data on demographic, reproductive biology and genetic approaches is essential for plant conservation, and we emphasize that it is important to have basic life history data, such as long-tem demographic data and variation in breeding system.

  • Research Products

    (40 results)

All 2007 2006 2005 Other

All Journal Article (40 results)

  • [Journal Article] Floral distribution, clonal structure, and their effects on pollination success in a self-incompatible Convallaria keiskei population in northern Japan.2007

    • Author(s)
      Araki, K.
    • Journal Title

      Plant Ecology 189

      Pages: 175-189

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Life-history monographs of Japanese plants. 7 : Polygonatum odoratum (Miller) Druce var. pluriflorum (Miq.) Ohwi (Convallariaceae).2007

    • Author(s)
      Ohara, M.
    • Journal Title

      Plant Species Biology 22

      Pages: 59-64

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Size-dependent sex allocation in a monocarpic perennial herb, Cardiocrinum cordatum (Liliaceae).2007

    • Author(s)
      Cao, G-X.
    • Journal Title

      Plant Ecology (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Cost of reproduction in a spring ephemeral species Adonis ramosa (Ranunculaceae) : carbon budget for seed production.2007

    • Author(s)
      Horibata, S.
    • Journal Title

      Ecoscience (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Floral sex allocation of a hermaphrodite herb with one-day flowers, Hosta rectifolia (Liliaceae).2007

    • Author(s)
      Cao, G-X.
    • Journal Title

      Plant Species Biology (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Effects of phenology and carbon assimilation on plant reproduction : implications for climatic changes.2007

    • Author(s)
      Kudo, G.
    • Journal Title

      Ecology (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Seasonal changes in pollinator activity influence pollen dispersal and seed production of the alpine shrub Rhododendron aureum (Ericaeae).2006

    • Author(s)
      Hirao, A.S.
    • Journal Title

      Molecular Ecology 15

      Pages: 1165-1173

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Evolution of hierarchical floral resource allocation associated with mating system in an animal-pollinated hermaphroditic herb, Trillium camschatcense (Trilliaceae).2006

    • Author(s)
      Tomimatsu, H.
    • Journal Title

      American Journal of Botany 9

      Pages: 134-141

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Importance of life history studies for conservation of fragmented populations : A case study of the understory herb, Trillium camschatcense.2006

    • Author(s)
      Ohara, M.
    • Journal Title

      Plant Species Biology 21

      Pages: 1-12

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Life-history monographs of Japanese plants. 5 : Trillium tschonoskii Maxim. (Trilliaceae).2006

    • Author(s)
      Ohara, M.
    • Journal Title

      Plant Species Biology 21

      Pages: 75-82

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Predominance of clonal reproduction, but recombinant origins of new genotypes in the free-floating aquatic bladderwort Utricularia australis f. tenuicaulis (Lentibulariaceae).2006

    • Author(s)
      Kameyama, Y.
    • Journal Title

      Journal of Plant Research 119

      Pages: 357-362

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Life-history monographs of Japanese plants. 6 : Convallaria keiskei Miq. (Covallariaceae).2006

    • Author(s)
      Ohara, M.
    • Journal Title

      Plant Species Biology 21

      Pages: 119-126

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Evaluating the consequences of habitat fragmentation in plant populations : a case study in Trillium camschatcense.2006

    • Author(s)
      Tomimatsu, H.
    • Journal Title

      Population Ecology 48

      Pages: 189-198

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Life-history monographs of Japanese plants. 7 : Cardiocrinum cordatum (Thunb.) Makino (Liliaceae).2006

    • Author(s)
      Ohara, M.
    • Journal Title

      Plant Species Biology 21

      Pages: 201-207

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A reconsideration of relationships among Japanese Trillium species based on karyology and AFLP data.2006

    • Author(s)
      Kubota, S.
    • Journal Title

      Plant Systematics and Evolution 126

      Pages: 129-137

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Characterization of six microsatellite markers in Trillium camschatcense using a dual-suppression-polymerase chain reaction technique.2006

    • Author(s)
      Kubota, S.
    • Journal Title

      Molecular Ecology Notes 6

      Pages: 1135-1137

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Genetic structure in aquatic bladderworts : Clonal propagation and hybrid perepetuation.2006

    • Author(s)
      Kameyama, Y.
    • Journal Title

      Annals of Botany 98

      Pages: 1017-1024

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Development of microsatellite markers in a clonal perennial herb, Convallaria keiskei2006

    • Author(s)
      Araki, K.
    • Journal Title

      Molecular Ecology Notes 6

      Pages: 1144-1146

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Significance of nectar distribution for bumblebee behaviour within inflorescences, with reference to inflorescence architecture and display size.2006

    • Author(s)
      Hirabayashi, Y.
    • Journal Title

      Ecoscience 13

      Pages: 351-359

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A mathematical analysis of leaf longevity of trees under seasonally-varying temperature condition, based on cost-benefit model.2006

    • Author(s)
      Takada, T.
    • Journal Title

      Evolutionary Ecology Research 8

      Pages: 1-11

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Floral sex ratio strategy in wind-pollinated species subject to wind-pollination efficiency and local mate competition as a game.2006

    • Author(s)
      Masaka, K.
    • Journal Title

      Journal of Theoretical Biology 240

      Pages: 114-125

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Evolution of hierarchical floral resource allocation associated with mating system in an animal- pollinated hermaphroditic herb, Trillium camschatcense (Trilliaceae).2006

    • Author(s)
      Tomimatsu, H.
    • Journal Title

      American Journal of Botany 93

      Pages: 1234-141

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Importance of life history studies for conservation of fragmented populations : A case study of the understory herb, Trillium camschatcense.2006

    • Author(s)
      Ohara, M
    • Journal Title

      Plant Species Biology 21

      Pages: 1-12

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Predominance of clonal reproduction, but recombinant origins of new genotypes in the free- floating aquatic bladderwort Utricularia australis f.tenuicaulis (Lentibulariaceae).2006

    • Author(s)
      Kameyama, Y.
    • Journal Title

      Journal of Plant Research 119

      Pages: 357-362

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Characterization of six microsatellite markers in Trillium camschatcense using a dual- suppression-polymerase chain reaction technique.2006

    • Author(s)
      Kubota, S.
    • Journal Title

      Molecular Ecology Notes 6

      Pages: 1135-1137

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Development of microsatellite markers in a clonal perennial herb, Convallaria keiskei.2006

    • Author(s)
      Araki, K
    • Journal Title

      Molecular Ecology Notes 6

      Pages: 1144-1146

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Significance of nectar distribution for bumblebee behavior within inflorescences, with reference to inflorescence architecture and display size.2006

    • Author(s)
      Hirabayashi Y.
    • Journal Title

      Ecoscience 13

      Pages: 351-359

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Hybrid origins and F_1 dominance in the free-floating sterile bladderwort, Utricularia australis f. australis (Lentibulariaceae).2005

    • Author(s)
      Kameyama, Y.
    • Journal Title

      American Journal of Botany 92

      Pages: 469-476

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Effect of snowmelt timing on the genetic structure of an Erythronium grandiflorum population in an alpine environment.2005

    • Author(s)
      Yamagishi, H.
    • Journal Title

      Ecological Research 20

      Pages: 199-204

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Life history monographs of Japanese plants. 2. Trillium camtschatcense Ker-Gawl. (Trilliaceae).2005

    • Author(s)
      Ohara, M.
    • Journal Title

      Plant Species Biology 20

      Pages: 75-82

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Breeding system and floral visitors of Convallaria keiskei.2005

    • Author(s)
      Araki, K.
    • Journal Title

      Plant Species Biology 20

      Pages: 151-155

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Microscale variations in the mating system and heterospecific incompatibility mediated by pollination competition in alpine snowbed plants.2005

    • Author(s)
      Kudo, G.
    • Journal Title

      Plant Species Biology 20

      Pages: 93-103

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hybrid origins and F1 dominance in the free-floating sterile bladderwort, Utricularia australis f.australis (Lentibulariaceae).2005

    • Author(s)
      Kameyama, Y.
    • Journal Title

      American Journal of Botany 92

      Pages: 469-476

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Life history monographs of Japanese plants. 2.Trillium camtschatcense Ker-Gawl. (Trilliaceae).2005

    • Author(s)
      Ohara, M.
    • Journal Title

      Plant Species Biology 20

      Pages: 75-82

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Breeding system and floral visitors of Convallaria keiskei.2005

    • Author(s)
      Araki, K
    • Journal Title

      Plant Species Biology 20

      Pages: 151-155

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Microscale variations in the mating system and heterospecific incompatibility mediated by pollination competition in alpine snowbed plants.2005

    • Author(s)
      Kudo G.
    • Journal Title

      Plant Species Biology 20

      Pages: 93-103

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Size-dependent sex allocation in a monocarpic perennial herb, Cardiocrinum cordatum (Liliaceae).

    • Author(s)
      Cao G-X.
    • Journal Title

      Plant Ecology (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Cost of reproduction in a spring ephemeral species Adonis ramosa (Ranunculaceae) : carbon budget for seed production.

    • Author(s)
      Horibata S
    • Journal Title

      Annals of Botany (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Floral sex allocation of a hermaphrodite herb with one-day flowers, Hosta rectifolia (Liliaceae).

    • Author(s)
      Cao G-X.
    • Journal Title

      Plant Species Biology (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Effects of phenology and carbon assimilation on plant reproduction : implications for climatic changes.

    • Author(s)
      Kudo G
    • Journal Title

      Ecology (in press)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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