Latest Update：2026/03/24 10:41:53

NAKANISHI Kosuke

Researcher Name: NAKANISHI Kosuke

Div (Section) name/title: Biodiversity Division／Research Associate

Research Subject: Integrated assessment of socio-economics and biodiversity and ecosystem services

Degree(s): Ph.D.

Professional Qualification(s): Biology,Agricultural Science,Science

Environmental Speciality Field: Conservation ecology,Water environment

Research Subject

Fiscal Year: 2024
- 27133 : Development of a integrated assessment model on the socio-ecological system
Fiscal Year: 2023
- 26754 : Development of a integrated assessment model on the socio-ecological system
Fiscal Year: 2022
- 26143 : Fundamental study for strategic risk management
- 26257 : Water level operation for ecosystem regime management of lakes
Fiscal Year: 2021
- 25518 : Study on ecological impact and factor analysis considering vulnerability
- 25669 : Fundamental study for strategic risk management
- 25774 : Water level operation for ecosystem regime management of lakes
Fiscal Year: 2020
- 25143 : Ecological Risk Assessment and Management Based on Ecological Models
- 25365 : Upgrade of Ecotoxicity Testing and Development of Novel System to Evaluate Ecotoxicological Effects of Chemicals
Fiscal Year: 2019
- 24723 : Ecological Risk Assessment and Management Based on Ecological Models
- 25005 : Scientific clarification and countermeasure to ecological impacts of pesticides on dragonflies
- 25020 : Upgrade of Ecotoxicity Testing and Development of Novel System to Evaluate Ecotoxicological Effects of Chemicals
Fiscal Year: 2018
- 24306 : Ecological risk assessment and management based on ecological models
- 24451 : Scientific Clarification and Countermeasure to Ecological Impacts of Pesticides on Dragonflies
Fiscal Year: 2017
- 24192 : Scientific Clarification and Countermeasure to Ecological Impacts of Pesticides on Dragonflies

Research Result (Publication)

Original Paper

Spatial variation of multifunctionality among abandoned rice paddies and irrigation ponds: potential roles of hydrological and environmental factors

Presenter : Matsuzaki S., Kohzu A., Watanabe M., Nakanishi K., Tsuchiya K., Kondo N., Sueyoshi M.
Title : , Restoration Ecology, 33(8):e70161 (2026)
Original Paper

Experimental test of the effects of prolonged flooding practices on animal communities in rice paddy fields

Presenter : Nakanishi K., Akanuma H., Kobayashi R., Yokomizo H., Hayashi T., Robson B., Usio N.
Title : , Agriculture, Ecosystems & Environment, 379:109369 (2025)
Original Paper

Inferring causal impacts of extreme water-level drawdowns on lake water clarity using long-term monitoring data

Presenter : Nakanishi K., Yokomizo H., Fukaya K., Kadoya T., Matsuzaki S., Nishihiro J., Kohzu A., Hayashi T.
Title : , Science of The Total Environment, 838(2): (2022)
Original Paper

Population model analyses of the combined effects of insecticide use and habitat degradation on the past sharp declines of the dragonfly Sympetrum frequens

Presenter : Nakanishi K., Yokomizo H., Hayashi T.
Title : , Science of The Total Environment, 787(147526): (2021)
Original Paper

Differential performance of contrasting defensive traits of cocoons of two moth species against bird predation

Presenter : Furukawa M, Nakanishi K., Honma A, Takakura KI, Matsuyama K, Hidaka N, Sawada H
Title : , Entomological Science (2021)
Other Publications

Chlorantraniliprole application differentially affects adult emergence of Sympetrum dragonflies in rice paddy fields.

Presenter : Nakanishi K., Usio N., Yokomizo H., Takashima T., Hayashi T.
Title : , Paddy and Water Environment (2021)
Original Paper

Effects of systemic insecticides on the population dynamics of the dragonfly Sympetrum frequens in Japan: Statistical analyses using field census data from 2009 to 2016

Presenter : Nakanishi K., Ueda T., Yokomizo H., Hayashi T.
Title : , Science of The Total Environment, 703:134499 (2020)
Original Paper

Investigating effect of climate warming on the population declines of Sympetrum frequens during the 1990s in three regions in Japan

Presenter : Nakanishi K., Koide D., Yokomizo H., Kadoya T., Hayashi T.
Title : , Scientific Reports, 10(12719): (2020)
Other Publications

Habitat partitioning of two closely related pond frogs, Pelophylax nigromaculatus and Pelophylax porosus brevipodus, during their breeding season

Presenter : Nakanishi K., Honma A., Furukawa M., Takakura KI., Fujii N., Morii K., Terasawa Y.
Title : , Evolutionary Ecology (2020)
Other Publications

Intraspecific competition reduces the quantity of excreted nutrients in tadpoles

Presenter : Ramamonjisoa N., Rakotonoely H., Kwon TO, Nakanishi K., Natuhara Y.
Title : , Marine and Freshwater Research (2020)
Original Paper

Were the sharp declines of dragonfly populations in the 1990s in Japan caused by fipronil and imidacloprid? An analysis of Hill’s causality for the case of Sympetrum frequens

Presenter : Nakanishi K., Yokomizo H., Hayashi T.
Title : , Environmental Science and Pollution Research, 25(35):35352-35364 (2018)

Spatial variation of multifunctionality among abandoned rice paddies and irrigation ponds: potential roles of hydrological and environmental factors

Presenter : Matsuzaki S., Kohzu A., Watanabe M., Nakanishi K., Tsuchiya K., Kondo N., Sueyoshi M.
Title : , Restoration Ecology, 33(8):e70161 (2026)
Experimental test of the effects of prolonged flooding practices on animal communities in rice paddy fields

Presenter : Nakanishi K., Akanuma H., Kobayashi R., Yokomizo H., Hayashi T., Robson B., Usio N.
Title : , Agriculture, Ecosystems & Environment, 379:109369 (2025)
Inferring causal impacts of extreme water-level drawdowns on lake water clarity using long-term monitoring data

Presenter : Nakanishi K., Yokomizo H., Fukaya K., Kadoya T., Matsuzaki S., Nishihiro J., Kohzu A., Hayashi T.
Title : , Science of The Total Environment, 838(2): (2022)
Population model analyses of the combined effects of insecticide use and habitat degradation on the past sharp declines of the dragonfly Sympetrum frequens

Presenter : Nakanishi K., Yokomizo H., Hayashi T.
Title : , Science of The Total Environment, 787(147526): (2021)
Differential performance of contrasting defensive traits of cocoons of two moth species against bird predation

Presenter : Furukawa M, Nakanishi K., Honma A, Takakura KI, Matsuyama K, Hidaka N, Sawada H
Title : , Entomological Science (2021)
Effects of systemic insecticides on the population dynamics of the dragonfly Sympetrum frequens in Japan: Statistical analyses using field census data from 2009 to 2016

Presenter : Nakanishi K., Ueda T., Yokomizo H., Hayashi T.
Title : , Science of The Total Environment, 703:134499 (2020)
Investigating effect of climate warming on the population declines of Sympetrum frequens during the 1990s in three regions in Japan

Presenter : Nakanishi K., Koide D., Yokomizo H., Kadoya T., Hayashi T.
Title : , Scientific Reports, 10(12719): (2020)
Were the sharp declines of dragonfly populations in the 1990s in Japan caused by fipronil and imidacloprid? An analysis of Hill’s causality for the case of Sympetrum frequens

Presenter : Nakanishi K., Yokomizo H., Hayashi T.
Title : , Environmental Science and Pollution Research, 25(35):35352-35364 (2018)

Chlorantraniliprole application differentially affects adult emergence of Sympetrum dragonflies in rice paddy fields.

Presenter : Nakanishi K., Usio N., Yokomizo H., Takashima T., Hayashi T.
Title : , Paddy and Water Environment (2021)
Habitat partitioning of two closely related pond frogs, Pelophylax nigromaculatus and Pelophylax porosus brevipodus, during their breeding season

Presenter : Nakanishi K., Honma A., Furukawa M., Takakura KI., Fujii N., Morii K., Terasawa Y.
Title : , Evolutionary Ecology (2020)
Intraspecific competition reduces the quantity of excreted nutrients in tadpoles

Presenter : Ramamonjisoa N., Rakotonoely H., Kwon TO, Nakanishi K., Natuhara Y.
Title : , Marine and Freshwater Research (2020)

Research Result (Presentation)

Research Presentation

Exploring the causal relationship between insecticide use and sharp population declines of the dragonfly Sympetrum frequens in Japan

Presenter : Nakanishi K., Yokomizo H., Hayashi T.
Name of Society : XXVII International Congress of Entomology (ICE2024) (2024)
Name of Proceedings : Abstracts
Research Lecture

Exploring the causal relationship between insecticide use and sharp declines in dragonfly populations using an integrated causal inference approach

Presenter : Nakanishi K.
Name of Society : The 39th Annual Meeting of the Society of Population Ecology (2023)
Name of Proceedings : Abstracts, 12-13
Research Lecture

Population model analyses of the combined effects of insecticide use and habitat degradation on the past sharp declines of the dragonfly Sympetrum frequens

Presenter : Hayashi T., Nakanishi K., Yokomizo H.
Name of Society : K-INET International Symposium 2022 (2022)
Name of Proceedings : Abstracts, 33
Research Lecture

Negative effects of insecticides on the population dynamics of the dragonfly Sympetrum frequens in rice fields: A statistical analysis using field census data in Hokuriku region, Japan

Presenter : Nakanishi K., Uéda T., Yokomizo H., Hayashi T.
Name of Society : Joint International Symposium: Challenging the Research Development and Collaboration Through Online Discussion (2020)
Name of Proceedings : Abstracts

Exploring the causal relationship between insecticide use and sharp population declines of the dragonfly Sympetrum frequens in Japan

Presenter : Nakanishi K., Yokomizo H., Hayashi T.
Name of Society : XXVII International Congress of Entomology (ICE2024) (2024)
Name of Proceedings : Abstracts

Exploring the causal relationship between insecticide use and sharp declines in dragonfly populations using an integrated causal inference approach

Presenter : Nakanishi K.
Name of Society : The 39th Annual Meeting of the Society of Population Ecology (2023)
Name of Proceedings : Abstracts, 12-13
Population model analyses of the combined effects of insecticide use and habitat degradation on the past sharp declines of the dragonfly Sympetrum frequens

Presenter : Hayashi T., Nakanishi K., Yokomizo H.
Name of Society : K-INET International Symposium 2022 (2022)
Name of Proceedings : Abstracts, 33
Negative effects of insecticides on the population dynamics of the dragonfly Sympetrum frequens in rice fields: A statistical analysis using field census data in Hokuriku region, Japan

Presenter : Nakanishi K., Uéda T., Yokomizo H., Hayashi T.
Name of Society : Joint International Symposium: Challenging the Research Development and Collaboration Through Online Discussion (2020)
Name of Proceedings : Abstracts