2016 Fiscal Year Final Research Report
Variation of fitness and mechanism of population sustainability from long term monitoring of long-lived forest herb
Project/Area Number |
23570032
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Ecology/Environment
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Research Institution | Tokyo Metropolitan University |
Principal Investigator |
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Project Period (FY) |
2011-04-28 – 2017-03-31
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Keywords | 多年生草本 / 成長 / 個体群動態 / 繁殖 / 生活史 / 寿命 |
Outline of Final Research Achievements |
Pertya rigidula, a perennial herbaceous plant, is growing on the forest floor. Its population seems to change little every year. In order to clarify to what extent they have grown and how many years they live, we surveyed over 20 years each individual. During the survey period, there were no individuals that grew from the seeds and grew up until the flowers bloomed. A growth model was constructed by combining growth conditions of several individuals, and it was estimated that it took at least 25 years from seed to flowering. In addition, individuals who grew bigger and started to flower were more likely to survive, and it was also presumed that the life expectancy exceeded 80 years. From these facts, it is thought that P. rigidula has a lifespan of more than 100 years.
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Free Research Field |
植物生態学
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