2020 Fiscal Year Final Research Report
Does noise affect biodiversity? : the relative and interactive effects of noise and habitat fragmentation
Project/Area Number |
19K24377
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Multi-year Fund |
Review Section |
1101:Environmental analyses and evaluation, environmental conservation measure and related fields
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Research Institution | Hokkaido University |
Principal Investigator |
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Project Period (FY) |
2019-08-30 – 2021-03-31
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Keywords | 騒音汚染 / 生息地の分断化 / 鳥類 / 種数・個体数 / 感覚汚染因子 / 感覚生態学 |
Outline of Final Research Achievements |
Anthropogenic noise has now attracted much attention as a driver of global biodiversity loss. However, we know little about the relative ecological impacts of noise and habitat fragmentation, which has long been considered a major driver of global biodiversity loss. Here, using a phantom road experiment, we compared the relative effects of noise and habitat fragmentation on forest bird communities (total abundance and species richness) in 10 1ha forest plots with varied fragmentation indices in Yufutsu plain, northern Japan. Results showed that experimental noise exposure resulted in 50.6% (5.97 birds) and 60.7% (2.90 species) reductions of total bird abundance and species richness, respectively. By contrast, habitat fragmentation resulted in a 46.7% reduction of total bird abundance. These results provide the first experimental evidence that the ecological impacts of noise could be larger than those by habitat fragmentation.
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Free Research Field |
生態学
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Academic Significance and Societal Importance of the Research Achievements |
本研究は森林性鳥類群集への騒音の影響が生息地の分断化よりも大きいことを野外操作実験により世界で初めて実証した。このことから、効果的な生物多様性保全を進めるためには、現在は分断化されていない静かな景観を優先的に保全していく必要があること、生息地の分断化だけでなく騒音への対策も行う必要があること、そうした対策の実施によって景観内の生物多様性が大きく回復する可能性があることが明らかになった。
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