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Hokkaido University Collection of Scholarly and Academic Papers >
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Light and nutrient limitations for tree growth on young versus old soils in a Bornean tropical montane forest
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| Title: | Light and nutrient limitations for tree growth on young versus old soils in a Bornean tropical montane forest |
| Authors: | Aiba, Shin-ichiro Browse this author →KAKEN DB | | Kitayama, Kanehiro Browse this author →KAKEN DB |
| Keywords: | Beta diversity | | Floristic turnover | | Pedogenesis | | Soil aging | | Tree growth |
| Issue Date: | Sep-2020 |
| Publisher: | Springer |
| Journal Title: | Journal of Plant Research |
| Volume: | 133 |
| Issue: | 5 |
| Start Page: | 665 |
| End Page: | 679 |
| Publisher DOI: | 10.1007/s10265-020-01217-9 |
| Abstract: | We examined forest and tree responses to decreasing nutrient availability with soil aging in a species-rich tropical montane rain forest on Mount Kinabalu, Borneo. Community composition and structure and tree growth rates were compared between two 1 ha plots on nutrient-rich young soil versus nutrient-deficient old soil. Myrtaceae and Fagaceae dominated both plots. With soil aging, the dominance of Lauraceae, stem density, basal area and aboveground biomass decreased, and the forest understory became brighter. Some dominant taxa on the old soil (Podocarpaceae and the genusTristaniopsisin Myrtaceae) were virtually absent on the young soil; this was attributed to light limitation in the understory. Growth rates of understory trees were lower on the young soil, whereas those of canopy trees were lower on the old soil. This suggested that the growth of understory trees was limited by light on the young soil, whereas that of canopy trees was limited by nutrients on the old soil. Of the eight species that were abundant in both plots, the dominance of five species was considerably lower on the old soil, four of which also exhibited decreased maximum sizes and lower growth rates. The remaining three species showed similar dominance across plots without a decline in growth rates, although they exhibited decreased maximum sizes on the old soil. These analyses demonstrated divergent responses of species to the soil-age gradient. We suggest that the differential responses of species to decreasing nutrient availability with a concomitant increase in understory light levels explain floristic turnover with soil aging. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/79419 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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