|Budget Amount *help
¥44,590,000 (Direct Cost: ¥34,300,000、Indirect Cost: ¥10,290,000)
Fiscal Year 2015: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2014: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2013: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Fiscal Year 2012: ¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
|Outline of Final Research Achievements
Coexistence of tree species in natural forest ecosystems has been examined in relation to differential response of species with varied degree of shade tolerance along the process of recovery from disturbance, horizontal resource heterogeneity and stochastic species turnover.
We developed an analytically tractable model of multi-layered competition equations, and examined the conditions of stable, as well as unstable, conditions for equilibrium coexistence among species without shade-tolerance differentiation.
Using field-census data of forest tree inventories from tropical to cool-temperate subalpine forests, we examined inter-specific trade-offs in demographic properties and architectural traits and tested how and to which extent the detected inter-specific trade-offs contributed to each hypothesis. We also developed the procedure of distinguishing inter-specific trade-offs and intra-specific plastic differentiation in demographic and architectural trait analysis.