論文 - 久保田　康裕

Geographic patterns of seed dormancy strategies along latitudinal and climatic gradients, Japanese East Asian islands

Fuji, A; Kusumoto, B; Shiono, T; Kubota, Y; Ulrich, W; Dickie, JB; Chen, SC

JAPANESE JOURNAL OF STATISTICS AND DATA SCIENCE ( Japanese Journal of Statistics and Data Science )  6 ( 2 ) 885 - 901   2023年11月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Soil Micro-eukaryotic Diversity Patterns Along Elevation Gradient Are Best Estimated by Increasing the Number of Elevation Steps Rather than Within Elevation Band Replication

Huang, SY; Lentendu, G; Fujinuma, J; Shiono, T; Kubota, Y; Mitchell, EAD

MICROBIAL ECOLOGY ( Microbial Ecology )  86 ( 4 ) 2606 - 2617   2023年11月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Special feature: modern methods and applications for biodiversity studies

Komori, O; Kubota, Y

JAPANESE JOURNAL OF STATISTICS AND DATA SCIENCE ( Japanese Journal of Statistics and Data Science )  6 ( 2 ) 783 - 784   2023年10月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Occurrence-based diversity estimation reveals macroecological and conservation knowledge gaps for global woody plants

Kusumoto, B; Chao, A; Eiserhardt, WL; Svenning, JC; Shiono, T; Kubota, Y

SCIENCE ADVANCES ( Science Advances )  9 ( 40 ) eadh9719   2023年10月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

　概要を見る

Incomplete sampling of species' geographic distributions has challenged biogeographers for many years to precisely quantify global-scale biodiversity patterns. After correcting for the spatial inequality of sample completeness, we generated a global species diversity map for woody angiosperms (82,974 species, 13,959,780 occurrence records). The standardized diversity estimated more pronounced latitudinal and longitudinal diversity gradients than the raw data and improved the spatial prediction of diversity based on environmental factors. We identified areas with potentially high species richness and rarity that are poorly explored, unprotected, and threatened by increasing human pressure: They are distributed mostly at low latitudes across central South America, Central Africa, subtropical China, and Indomalayan islands. These priority areas for botanical exploration can help to efficiently fill spatial knowledge gaps for better describing the status of biodiversity and improve the effectiveness of the protected area network for global woody plant conservation.

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Global patterns of phylogenetic beta-diversity components in angiosperms

Moulatlet, GM; Kusumoto, B; Pinto-Ledezma, J; Shiono, T; Kubota, Y; Villalobos, F

JOURNAL OF VEGETATION SCIENCE ( Journal of Vegetation Science )  34 ( 4 )   2023年07月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Abstract Questions Geographic gradients of beta‐diversity help understanding the relationship between species and their environment. However, on a global scale, such patterns are only known for a few taxa, mainly terrestrial vertebrates, especially when considering the phylogenetic dimension. Here, we present the first global analysis of phylogenetic beta‐diversity (PBD) for angiosperms. We aim to disentangle the relative contribution of PBD components (turnover‐ and nestedness‐resultant differences) and the deviation of PBD given the taxonomic beta‐diversity (TBD) along environmental and geographic gradients. Location Global. Methods We compiled range maps of 207,146 angiosperm species at 1° cells and calculated PBD for assemblages formed by each focal cell and its neighboring cells in radii of 1.5° and 2° (“moving‐window” approach). PBD was decomposed into turnover‐ and nestedness‐resultant components, evaluating their relative importance as the proportion of nestedness‐resultant PBD to the total PBD (PBD_ratio). To evaluate lineage exchanges, we calculated the deviation of PBD from TBD (PBD_dev). We assessed the breakpoints of relationship between PBD and geographic (latitude and elevation) and environmental (temperature and precipitation) gradients using linear piecewise regressions. Results The turnover‐resultant component was predominant in shaping the global angiosperm PBD pattern. PBD_ratio was positively correlated with temperature, having a breakpoint around 14°. Because PBD_dev was mostly positive, TBD prevailed over PBD; PBDdev was correlated significantly with latitude and temperature gradients, being higher (i.e., low lineage replacement compared with species replacement) at latitudes above 50° N, and in colder climates (below 2°C). Conclusions We provided the first global assessment of current geographic PBD patterns for angiosperms. Our results showed that such patterns are largely dictated by global environmental and geographic gradients, with lineage replacement being more important than lineage loss in virtually all areas, except at higher latitudes and on islands and peninsulas.

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Does life form affect tree species assembly? A demographic study across the life history of a temperate forest in Japan

Wijenayake, PR; Masaki, T; Shibata, M; Kubota, Y

ECOSPHERE ( Ecosphere )  14 ( 6 )   2023年06月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Soil filtration‐sedimentation improves shelled protist recovery in eukaryotic eDNA surveys

Guillaume Lentendu, Estelle P Bruni, Claudine Ah‐Peng, Junichi Fujinuma, Yasuhiro Kubota, Juan Lorite, Julio Peñas, Shuyin Huang, Dominique Strasberg, Pascal Vittoz, Edward AD Mitchell

Molecular Ecology Resources     2023年05月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Occurrence-based diversity estimation reveals macroecological and conservation knowledge gaps for global woody plants

Buntarou Kusumoto, Anne Chao, Wolf L Eiserhardt, Jens-Christian Svenning, Takayuki Shiono, Yasuhiro Kubota

bioRxiv ( Cold Spring Harbor Laboratory )    2023年04月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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A global analysis of avian island diversity-area relationships in the Anthropocene.

Matthews TJ, Wayman JP, Whittaker RJ, Cardoso P, Hume JP, Sayol F, Proios K, Martin TE, Baiser B, Borges PAV, Kubota Y, Dos Anjos L, Tobias JA, Soares FC, Si X, Ding P, Mendenhall CD, Sin YCK, Rheindt FE, Triantis KA, Guilhaumon F, Watson DM, Brotons L, Battisti C, Chu O, Rigal F

Ecology letters ( Ecology Letters )    2023年03月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Beta diversity dynamics in East Asian angiosperm woody plants: taxonomic turnover in relation to temperature gradients during the Cenozoic

Shogo Ikari, Takayuki Shiono, Yasuhiro Kubota

Frontiers of Biogeography     2023年 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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生物多様性ビッグデータに基づいたネイチャーの可視化：その現状と展望

久保田 康裕, 楠本 聞太郎, 塩野 貴之, 五十里 翔吾, 深谷 肇一, 高科 直, 吉川 友也, 重藤 優太郎, 新保 仁, 竹内 彰一, 三枝 祐輔, 小森 理

計量生物学 ( 日本計量生物学会 )  43 ( 2 ) 145 - 188   2023年 [ 査読有り ]

掲載種別: 研究論文（その他学術会議資料等）

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<p>Biodiversity big data plays an essential role in better understanding of biodiversity pattern in space and time and its underpinning macroecological mechanisms. Biodiversity as a concept is inductively quantified by the measurable multivariate data relative to taxonomic, functional and phylogenetic/genetic aspects. Therefore, conservation is also argued by using particular biodiversity metrics, context dependently, e.g., spatial conservation prioritization, design of protected areas network.Individual descriptive information accumulated in biogeography, ecology, physiology, molecular biology, taxonomy, and paleontology are aggregated through the spatial coordinates of biological distributions. Such biodiversity big data enables to visualize geography of 1) the richness of nature, 2) the value of nature, and 3) the uncertainty of nature, based on statistical models including maximum likelihood, machine learning, deep learning techniques. This special issue focuses on statistical and mathematical methods in terms of the quantitative visualization of biodiversity concepts. We hope that this special issue serves as an opportunity to involve researchers from different fields interested in biodiversity information and to develop into new research projects related to Nature Positive by 2030 that aims at halting and reversing the loss of biodiversity and ecosystem service.</p>

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30by30 目標と自然共生エリアOECM

久保田 康裕

環境情報科学 ( 一般社団法人 環境情報科学センター )  51 ( 4 ) 43 - 49   2022年12月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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<p>自然保護区の拡大による生物絶滅の抑止効果は，「保護区を設置する場所」に依存する。一方，保護区は土地・海域の利用に関する法的規制を伴うため，保護区を拡大できる場所は，社会経済的に制限される。陸や海の空間計画には，生物多様性保全と社会経済的利用の調和が求められる。したがって，自然共生の理念を基に，ある空間を経済的に利用しつつ保全も副次的に達成するOECM によって，民間主導の保全事業を推進することは有望である。しかし，保全の実効性を担保するという観点では，OECM の難易度は低くなく，保全政策としては共同幻想に終わる可能性もある。生物多様性保全を目的としたOECM を長期的に駆動させる原動力として，生物多様性ビッグデータ・テクノロジープラットフォームが重要である。</p>

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Global raster dataset on historical coastline positions and shelf sea extents since the Last Glacial Maximum.

De Groeve J, Kusumoto B, Koene E, Kissling WD, Seijmonsbergen AC, Hoeksema BW, Yasuhara M, Norder SJ, Cahyarini SY, van der Geer A, Meijer HJM, Kubota Y, Rijsdijk KF

Global ecology and biogeography : a journal of macroecology ( Wiley )  31 ( 11 ) 2162 - 2171   2022年11月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Latitudinal gradients of reproductive traits in Japanese woody plants

Ulrich W.

Ecological Research ( Ecological Research )  38 ( 1 ) 188 - 199   2022年10月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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特集 ペットと人と環境と-共生社会を目指す(=^・^=) ペットと生物多様性の保全

塩野 貴之, 久保田 康裕

公衆衛生 ( 株式会社医学書院 )  86 ( 3 ) 267 - 274   2022年03月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Area-based conservation planning in Japan: The importance of OECMs in the post-2020 Global Biodiversity Framework

Shiono T.

Global Ecology and Conservation ( Global Ecology and Conservation )  30   e01783 - e01783   2021年10月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Climate and land-use interactively shape butterfly diversity in tropical rainforest and savanna ecosystems of southwestern China.

Miao BG, Peng YQ, Yang DR, Kubota Y, Economo EP, Liu C

Insect science ( Insect Science )  28 ( 4 ) 1109 - 1120   2021年08月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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Human-induced habitat conversion and degradation, along with accelerating climatic change, have resulted in considerable global biodiversity loss. Nevertheless, how local ecological assemblages respond to the interplay between climate and land-use change remains poorly understood. Here, we examined the effects of climate and land-use interactions on butterfly diversity in different ecosystems of southwestern China. Specifically, we investigated variation in the alpha and beta diversities of butterflies in different landscapes along human-modified and climate gradients. We found that increasing land-use intensity not only caused a dramatic decrease in butterfly alpha diversity but also significantly simplified butterfly species composition in tropical rainforest and savanna ecosystems. These findings suggest that habitat modification by agricultural activities increases the importance of deterministic processes and leads to biotic homogenization. The land-use intensity model best explained species richness variation in the tropical rainforest, whereas the climate and land-use intensity interaction model best explained species richness variation in the savanna. These results indicate that climate modulates the effects of land-use intensity on butterfly alpha diversity in the savanna ecosystem. We also found that the response of species composition to climate varied between sites: specifically, species composition was strongly correlated with climatic distance in the tropical rainforest but not in the savanna. Taken together, our long-term butterfly monitoring data reveal that interactions between human-modified habitat change and climate change have shaped butterfly diversity in tropical rainforest and savanna. These findings also have important implications for biodiversity conservation under the current era of rapid human-induced habitat loss and climate change. This article is protected by copyright. All rights reserved.

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Area-based conservation planning in Japan: protected area network effectiveness to the post-2020 Global Biodiversity Framework

Takayuki Shiono, Yasuhiro Kubota, Buntarou Kusumoto

■■■ ( Cold Spring Harbor Laboratory )    2021年07月 [ 査読有り ]

掲載種別: 研究論文（その他学術会議資料等）

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<title>ABSTRACT</title>To reframe the imperfect review processes of nation-scale actions on area-based conservation through protected area (PA) networks, we first created novel infrastructure to visualize nation-level biodiversity information in Japan. We then assessed the performance of the existing PA network relative to land exploitation pressure and evaluated conservation effectiveness of PA expansion for the post-2020 Global Biodiversity Framework. The Zonation algorithm was used to spatially prioritize conservation areas to minimize biodiversity loss and the extinction risk for 8,500 Japanese vascular plant and vertebrate species under constraints of the existing PA network and land use. The spatial pattern of the identified priority areas, which were considered candidate areas for expansion of the current PA network, was influenced by land-use types according to the mask layers of non-PAs, and low-, middle-, and high-ranked PAs. The current PA network reduced the aggregate extinction risk of multiple species by 36.6%. Indeed, the percentage of built-up areas in the existing PAs was in general smaller than that in the areas surrounding PAs. Notably, high-ranked PAs fully restrained built-up pressure (0.037% per 10 years), whereas low-ranked PAs in the national park and wild-life protection areas did not (1.845% per 10 years). Conservation effects were predicted to substantially improve by expansion of high-ranked (legally strict) PAs into remote non-PAs without population/socio-economic activities, or expansion of medium-ranked PAs into agriculture forestry satoyama and urban areas. A 30% land conservation target was predicted to decrease extinction risk by 74.1% when PA expansion was implemented across remote areas, satoyama, and urban areas; moreover, PA connectivity almost doubled compared with the existing PA network. In contrast, a conventional scenario showed that placing national parks in state-owned and non-populated areas would reduce extinction risk by only 4.0%. The conservation prioritization analyses demonstrated an effectiveness of using a comprehensive conservation approach that reconciles land-sparing protection and land-sharing conservation in other effective area-based conservation measures (OECM) in satoyama and urban green spaces. Our results revealed that complementary inclusion of various PAs interventions related to their governance and land-use planning plays a critical role in effectively preventing biodiversity loss and makes it more feasible to achieve ambitious conservation targets.

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階層モデリングによるデータ統合：地理的スケールでの種個体数量分布の推定

深谷 肇一, 楠本 聞太郎, 塩野 貴之, 藤沼 潤一, 久保田 康裕

日本森林学会大会発表データベース ( 日本森林学会 )  132 ( 0 ) 153   2021年05月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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<p>種の個体数量は重要な生態学的変数である。しかし、大きな空間スケールにおいては、種の個体数量のパターンについて未だ十分な理解が得られていない。本講演では、種類の異なる生態調査データを統合する階層モデルを用いて、木本植物の種個体数量を広域かつ分類群網羅的に推定した研究を紹介する。まず、多数の生物種の地理分布と、局所的な調査における群集レベルでの種検出の過程を説明する階層モデルを構築することで、個々の種の広域での個体数量の分布を統計的に推測することを可能とした。構築したモデルを日本国内の多数の植生調査データと植物の地理分布データに当てはめることで、1200種以上の木本種のそれぞれについて、自然林における個体数量を10km平方の解像度で推定した。推定された広域の種個体数量分布を用いて行われた、地域生物多様性のマクロ進化過程の検証と、国内レッドリストの定量的検証の例を紹介する。</p>

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Biogeographical origin effects on exotic plants colonization in the insular flora of Japan

Kusumoto B.

Biological Invasions ( Biological Invasions )  23 ( 9 ) 2973 - 2984   2021年05月 [ 査読有り ]

掲載種別: 研究論文（学術雑誌）

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