New methods of extinction risk assessment for threatened plants
Grant-in-Aid for Scientific Research (B)
|Allocation Type||Single-year Grants |
|Research Institution||Kyushu University |
YAHARA Tetsukazu Faculty of Science, Department of Biology, Kyushu University, Professor, 理学研究院, 教授 (90158048)
INOUE Ken Shinshu University, Faculty of Science, Professor, 理学部, 教授 (40176425)
TAKAHASHI Hideki Hokkaido University, Faculty of Agriculture, Professor, 農学部, 教授 (70142700)
MATSUDA Hiroyuki University of Tokyo, Ocean Research Institute, Associate Professor, 海洋研究所, 助教授 (70190478)
KADONO Yasuro Kobe University, Faculty of Science, Professor, 理学部, 教授 (90127358)
YOKOTA Masatsugu Ryukyu University, Faculty of Science, Professor, 理学部, 教授 (90166885)
芹沢 俊介 愛知教育大学, 教育学部, 教授 (00111865)
|Project Period (FY)
1999 – 2001
Completed (Fiscal Year 2001)
|Budget Amount *help
¥13,800,000 (Direct Cost: ¥13,800,000)
Fiscal Year 2001: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2000: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 1999: ¥5,600,000 (Direct Cost: ¥5,600,000)
|Keywords||threatened plants / conservation biology / risk analysis / red data book / environment assessment / IUCN|
The main purpose of this project was to establish new simple and practical methods of extincti on risk assessment. Main results of the project were as follows.
(1) Extinction risk assessment was performed for 365 spp which were qualified as DD (data deficient) in the Red List published by the Environment Agency (1997) and the result was used in the Red Data Book published by the Ministry of Environment (2000).
(2) We developed a simple equation to estimate decline rate per 10 years (R) using the quantitative data published in the RDB. Further, we developed an eqation to estimate mean extinction time (T) using R and population size (N).
(3) We developed a method of impact assessment for a land use plan in some area where threatened plants are native. This method uses mean extinction time (T) estimated by the above method.
(4) We developed two hotspot measures to identify hotspots of threats, and ranked secondary glids of Japan by using them.
(5) We compiled a database for all taxa of Japanese vascular plants.
Report (4 results)
Research Products (22 results)