 |
深澤 圭太 （ふかさわ けいた）Keita FUKASAWA, Ph.D.主任研究員・博士（学術） 国立環境研究所 生物多様性領域 生物多様性評価・予測研究室 〒305-8506 茨城県つくば市小野川16-2 |
研究の概要
近年、外来生物の防除や鳥獣害対策など、大きなスケールでの生態系管理が必要となる場面が増えています。適切に計画されれば、このような取り組み は大規模野外操作実験とみなすことが可能です。そこからは生物の動態についての理解とともに、管理における意思決定支援につながる情報を得ること ができるでしょう。私は、生態系管理の現場にいる方々と協力しながら、生態学のモデルを介してデータと意思決定をつなぐ研究をしています。これま での研究テーマは、小笠原諸島の外来樹木アカギ、奄美大島のマングース防除、クマ類の個体群管理などです。
専門分野
生態学、保全生物学、階層ベイズモデル
学術論文 (査読のあるもの)
Fukasawa K., Higashide D. (2025) Mechanistic home range capture-recapture models for the estimation of population density and landscape connectivity. Ecology, 106 (2), e70046 
updated Feb. 27, 2025
Ogawa, Y., Fukasawa, K., Yoshioka, A., Kumada, N., Takenaka, A., & Kamijo, T. (2025) Optimizing the frequency of question items for bird species in quiz-style online training. Ecological Informatics, Volume 85. DOI:10.1016/j.ecoinf.2024.102908 
updated Jan. 15, 2025
Aoki, S., Fukasawa K. S. (2024) Kernel density estimation of allele frequency including undetected alleles. PeerJ 12:e17248. DOI: 10.7717/peerj.17248 
updated Apl. 26, 2024
Aoki, S., Ishihama F., Fukasawa K. (2023) Robustness of genetic diversity measures under spatial sampling and a new frequency-independent measure. PeerJ, 11:e16027. DOI: 10.7717/peerj.16027 updated Sep. 22, 2023
Ogawa, Y., Fukasawa, K., Yoshioka, A., Kumada, N., Takenaka, A., Ito, T. (2023). Quiz-style online training tool helps to learn birdsong identification and support citizen science. PeerJ, 11:e15387. updated Jun. 27
Shimozuru, M., Jimbo, M., Adachi, K., Kawamura, K., Shirane, Y., Umemura, Y., Ishinazaka, T., Nakanishi, M., Kiyonari, M., Yamanaka, M., Amagai, Y., Ijuin, A., Sakiyama, T., Kasai, S., Nose, T., Shirayanagi, M., Tsuruga, H., Mano, T., Tsubota, T. Fukasawa, K., Uno, H. (2022). Estimation of breeding population size using DNA-based pedigree reconstruction in brown bears. Ecology and Evolution, 12, e9246. updated Oct. 13, 2022
Kasada, M., Nakashima,Y., Fukasawa K., Yajima, G., Yokomizo, H., Miyashita, T. (2022) State-space model combininglocal camera data and regional administration datareveals population dynamics of wild boar. Population Ecology, DOI:10.1002/1438-390X.12138KASADAET AL.13 updated Sep. 2, 2022
Sugimoto N., Fukasawa K., Asahara A., Kasada M., Matsuba M., Miyashita T. (2022) Positive and negative effects of land abandonment on butterfly communities revealed by a hierarchical sampling design across climatic regions. Proceedings of the Royal Society B, 289, 1971
Higashide, D., Kuriyama, T., Takagi, S., Nakashima, Y., Fukasawa, K., Yajima, G., Kasada, M., Yokoyama, M. (2021) Effectiveness of signs of activity as relative abundance indices for wild boar. Wildlife Biology, doi: 10.2981/wlb.00869
Hata, A., Nakashita, R., Fukasawa, K., Minami, M., Fukue, Y., Higuchi, N., Uno, H., Nakajima, Y., Saeki, M., Kozakai, C., Takada, M. B. (2021) Occurrence patterns of crop-foraging sika deer distribution in an agriculture-forest landscape revealed by nitrogen stable isotopes. Ecology and Evolution, 11, 15303-15311.
Matsuhashi S., Asai M., Fukasawa K. (2021) Estimations and projections of Avena fatua dynamics under multiple management scenarios in crop fields using simplified longitudinal monitoring. PLoS ONE, 16, e0245217
Fukasawa K., Osada Y., Iijima H. (2020) Is harvest size a valid indirect measure of abundance for evaluating the population size of game animals using harvest-based estimation? Wildlife Biology
Nishimoto M., Miyashita T., Yokomizo H., Matsuda H., Imazu T., Takahashi H., Hasegawa M., Fukasawa K. (2020) Spatial optimization of invasive species control informed by management practices. Ecological Applications, 31, e02261 （主著者個人ページへの外部リンク）
Yoshioka A., Shimizu A., Oguma H., Kumada N., Fukasawa K., Jingu S., Kadoya T. (2020) Development of a camera trap for perching dragonflies: a new tool for freshwater environmental assessment. PeerJ, 8, e9681. DOI: 10.7717/peerj.9681
Yoshioka A., Matsushima N., Jingu S., Kumada N., Yokota R., Totsu K., Fukasawa K. (2020) Acoustic monitoring data of anuran species inside and outside the evacuation zone of the Fukushima Daiichi power plant accident. Ecological Research, 35, 765-772. DOI: 10.1111/1440-1703.12121
Komine, H., Fukasawa, K., Akasaka, M., Watari, Y., Iwai, N., Kaji, K. (2020) Rapid behavioural responses of native frogs caused by past predation pressure from invasive mongooses. Journal of Zoology, 310(2), 126-134. DOI: 10.1111/jzo.12734
Fujita T., Ariga T., Hijioka Y., Fukasawa K., Ohashi H. (2019) Assessing the potential impacts of climate and population change on land-use changes projected to 2100 in Japan. Climate Research, 79, 139-149
Fukasawa, K., Akasaka, T. (2019) Long-lasting effects of historical land use on the current distribution of mammals revealed by ecological and archaeological patterns. Scientific Reports, 9, 10697. DOI: 10.1038/s41598-019-46809-1
Ohashi, H., Fukasawa, K., Ariga, T., Matsui, T., Hijioka, Y. (2019)
High-resolution national land use scenarios under a shrinking population
in Japan. Transactions in GIS, 23, 786-804. DOI: 10.1111/tgis.12525
Nakashima, Y., Fukasawa, K., Samejima, H. (2018) Estimating animal density without individual recognition
using information derivable exclusively from camera traps. Journal of Applied
Ecology, 55(2), 735-744. DOI: 10.1111/1365-2664.13059
Yoshioka, A., Fukasawa, K., Mishima, Y., Sasaki, K., Kadoya, T. (2017). Ecological dissimilarity among land-use/land-cover types improves a heterogeneity index for predicting biodiversity in agricultural landscapes. Ambio, 46(8), 894-906. DOI: 10.1007/s13280-017-0925-7
深澤圭太, 三島啓雄, 熊田那央, 竹中明夫, 吉岡明良, 勝又聖乃, 羽賀淳, 久保雄広, 玉置雅紀 (2017) バードデータチャレンジ：録音音声の種判別における野鳥愛好家・研究者協働の試みとその課題.
Bird Research, 13, A15-A28. DOI: 10.11211/birdresearch.13.A15
Hata, A., Takada, MB., Nakashita, R., Fukasawa, K., Oshida, T., Ishibashi, Y., Sato, Y. (2017) Stable isotope and DNA analyses reveal the spatial distribution of crop-foraging brown bears. Journal of Zoology, 303(3), 207-217. DOI: 10.1111/jzo.12479
Ohashi, H., Fukasawa, K., Ariga, T, Matsui, T., Hijioka, Y. (2017) 人口減少社会に向けたシナリオアプローチ：ニホンジカの分布拡大問題を事例として. 野生生物と社会, 5(1), 41-46. DOI: 10.20798/awhswhs.5.1_41
寺田文子, 釣賀一二三, 長坂晶子, 近藤麻美, 深澤圭太 (2017) ヒグマの体毛の採取効率はヘア・トラップの立地条件から影響を受けるか？―北海道南西部渡島半島での調査結果を用いた検討―.
哺乳類科学, 57(2), 297-306. DOI: 10.11238/mammalianscience.57.297
Mizuta T., Takami Y., Torikai H., Watanabe T., Fukasawa K. (2017) Song-count
surveys and population estimates reveal the recovery of the endangered
Amami Thrush Zoothera dauma major, which is endemic to Amami-Oshima Island
in south-western Japan. Bird Conservation International, 27(4), 470-482. DOI: 10.1017/S095927091600023X
Fukasawa, K., Mishima, Y., Yoshioka, A., Kumada, N., Totsu, K. (2017) Acoustic monitoring
data of avian species inside and outside the evacuation zone of the Fukushima
Daiichi power plant accident. Ecological Research, 32(6), 769. DOI: 10.1007/s11284-017-1491-y
Yoshioka, A., Fukasawa, K., Mishima, Y., Sasaki, K., Kadoya, T. (2017) Ecological dissimilarity among
land-use/land-cover types improves a heterogeneity index for predicting
biodiversity in agricultural landscapes. Ambio, 46(8), 894-906. DOI: 10.1007/s13280-017-0925-7
Fukasawa, K., Mishima, Y., Yoshioka, A., Kumada, N., Totsu, K., Osawa, T. (2016) Mammal
assemblages recorded by camera traps inside and outside the evacuation
zone of the Fukushima Daiichi Nuclear Power Plant accident. Ecological
Research, 31(4), 493. DOI: 10.1007/s11284-016-1383-6
Tani, N., Tsumura, Y., Fukasawa, K., Kado, T., Taguchi, Y., Lee, SL, et al. (2015) Mixed Mating System Are
Regulated by Fecundity in Shorea curtisii (Dipterocarpaceae) as Revealed
by Comparison under Different Pollen Limited Conditions. PLoS ONE, 10(5),
e0123445. DOI: 10.1371/journal.pone.0123445
Yoshioka, A., Mishima, Y., Fukasawa, K. (2015) Pollinators and other flying
insects inside and outside the Fukushima evacuation zone. PLOS ONE, 10(e0140957),
1-16. DOI: 10.1371/journal.pone.0140957
浅田正彦, 長田穣, 深澤圭太, 落合啓二 (2014) 状態空間モデルを用いた階層ベイズ推定法によるキョン（Muntiacus reevesi）の個体数推定. 哺乳類科学, 54(1), 53-72. DOI: 10.11238/mammalianscience.54.53
Fukasawa, K., Hashimoto, T., Tatara, M., Abe, S. (2013) Reconstruction
and prediction of invasive mongoose population dynamics from history of
introduction and management: a Bayesian state-space modelling approach.
Journal of Applied Ecology, 50(2), 469-478. DOI: 10.1111/1365-2664.12058
Fukasawa, K., Miyashita, T., Hashimoto, T., Tatara, M., and Abe, S. (2013) Differential population responses of native and alien rodents to an invasive predator, habitat alteration, and plant masting. Proceedings of Royal Society B: Biological Sciences, 280, 20132075. DOI: 10.1098/rspb.2013.2075
Tani, N., Tsumura, Y., Fukasawa, K., Kado, T., Taguchi, Y., Lee, S.L.,
Lee, C.T., Muhammad, N., Niiyama, K., Otani, T., Yagihashi, T., Ripin,A.,
Kassim, A. R. (2012) Male fecundity and pollen dispersal in hill dipterocarps:
significance of mass synchronized flowering and implications for conservation.
Journal of Ecology, 100(2), 405-415. DOI: 10.1111/j.1365-2745.2011.01929.x
Fukasawa, K., Koike, F., Tanaka, N. and Otsu, K. (2009) Predicting future invasion of an invasive alien tree in a Japanese oceanic island by process-based statistical models using recent distribution maps. Ecological Research, 24, 965-975. DOI: 10.1007/s11284-009-0595-4
深澤圭太, 石濱史子, 小熊宏之, 武田知己, 田中信行, 竹中明夫 (2009) 条件付自己回帰モデルによる空間自己相関を考慮した生物の分布データ解析. 日本生態学会誌, 59, 171-186. DOI:10.18960/seitai.59.2_171
田中信行, 深澤圭太, 大津佳代, 野口絵美, 小池文人 (2009) 小笠原におけるアカギ根絶と在来林の再生. 地球環境, 14(1), 73-84.
著書など
深澤圭太 (2017) 「生物」「生命」を研究・育成する施設から読者の皆さんへのメッセージ：国立環境研究所生物・生態系環境研究センター. 生物の科学 遺伝, 71(5),492.
深澤圭太, 岡田尚 (2017) 無人化地域のグリーンインフラ. 決定版！グリーンインフラ. 日経BP社, 東京.
橋本琢磨, 諸澤崇裕, 深澤圭太 (2016) 奄美から世界を驚かせよう:奄美大島におけるマングース防除事業, 世界最大規模の根絶へ. 奄美群島の自然史学:亜熱帯島嶼の生物多様性.
東海大学出版部, 神奈川.
深澤圭太 (2015) 予測と時間 -生物多様性保全におけるモニタリング-. 保全生態学の挑戦 空間と時間のとらえ方. 東京大学出版会, 東京.
Yoshioka, A., Mishima, Y., Kumada, N., Fukasawa, K. (2016) Tackling biodiversity
monitoring of the Fukushima evacuation zone. IAIA1 6 Conference Proceedings.
山田文雄, 石井信夫, 池田透, 常田邦彦, 深澤圭太, 橋本琢磨, 諸澤崇裕, 阿部愼太郎, 石川拓哉, 阿部豪, 村上興正 (2012) 環境省の行政事業レビューへの研究者の対応 -効果的・効率的外来哺乳類対策の構築に向けて-.
哺乳類科学, 52(2), 265-287.
Last updated Feb. 27, 2025