Basic study on the forest ecosystems in Amami Islands, a world natural heritage candidate, Kagoshima, Japan ―Kagoshima University Satsunan Islands Forest Ecosystem Research Group―


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  • 世界自然遺産候補地奄美群島の森林生態系に関する基礎的研究 ―鹿児島大学薩南諸島森林生態研究グループ―


<p>We conducted the vegetation survey by using the tree census plots of old-growth forests on the islands of Amami-Oshima and Tokunoshima, both of which are world natural heritage candidates, Amami Islands, Kagoshima Prefecture, Japan. Here we report the outline of two 1-hectare plots established at 400 m and 600 m in the western part of Amami-Oshima, comparing them with an older plot at 350 m in the central part of the island. The minimum census size of trees was 4.8 cm diameter at breast height. Our plots showed the lesser dominance of Castanopsis sieboldii and Schima wallichii and higher dominance of Distylium racemosum and Quercus salicina, which suggests that our plots are at more advanced stages of vegetation succession. The variation among the three 1-hectare plots will be explained by altitude, topography and disturbance history. We also studied animals around our tree census plots on Amami-Oshima and Tokunoshima by using a camera trap method. The results indicated that the old-growth forests on both islands serve as habitats for mammals and birds including many endemics.</p>



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