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Degeneration of foundation cushion species induced by ecological constraints can cause massive changes in alpine plant communities
Chen, Jianguo; Chen, Xufang; Qian, Lishen; Zhang, Yazhou; Li, Bo; Shi, Honghua; Sun, Lu; Schob, Christian; Sun, Hang
2024
发表期刊SCIENCE CHINA-LIFE SCIENCES
卷号67期号:3页码:596-610
摘要Foundational cushion plants can re-organize community structures and sustain a prominent proportion of alpine biodiversity, but they are sensitive to climate change. The loss of cushion species can have broad consequences for associated biota. The potential plant community changes with the population dynamics of cushion plants remain, however, unclear. Using eight plant communities along a climatic and community successional gradient, we assessed cushion population dynamics, the underlying ecological constraints and hence associated plant community changes in alpine communities dominated by the foundational cushion plant Arenaria polytrichoides. The population dynamics of Arenaria are attributed to ecological constraints at a series of life history stages. Reproductive functions are constrained by increasing associated beneficiary plants; subsequent seedling establishment is constrained by temperature, water and light availability, extreme climate events, and interspecific competition; strong competitive exclusion may accelerate mortality and degeneration of cushion populations. Along with cushion dynamics, species composition, abundance and community structure gradually change. Once cushion plants completely degenerate, previously cushion-dominated communities shift to relatively stable communities that are overwhelmingly dominated by sedges. Climate warming may accelerate the degeneration process of A. polytrichoides. Degeneration of this foundational cushion plant will possibly induce massive changes in alpine plant communities and hence ecosystem functions in alpine ecosystems. The assessment of the population dynamics of foundation species is critical for an effective conservation of alpine biodiversity.
关键词alpine ecosystem biodiversity change climate change plant community dynamics foundation species global warming population dynamics QINGHAI-TIBET PLATEAU ECOSYSTEM ENGINEERS HENGDUAN MOUNTAINS ARENARIA-POLYTRICHOIDES RANGE SHIFTS CLIMATE DIVERSITY CONSEQUENCES RECRUITMENT VEGETATION
学科领域Life Sciences & Biomedicine - Other Topics
DOI10.1007/s11427-022-2383-6
WOS记录号WOS:001115173500001
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/74820
专题中国科学院昆明植物研究所
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Chen, Jianguo,Chen, Xufang,Qian, Lishen,et al. Degeneration of foundation cushion species induced by ecological constraints can cause massive changes in alpine plant communities[J]. SCIENCE CHINA-LIFE SCIENCES,2024,67(3):596-610.
APA Chen, Jianguo.,Chen, Xufang.,Qian, Lishen.,Zhang, Yazhou.,Li, Bo.,...&Sun, Hang.(2024).Degeneration of foundation cushion species induced by ecological constraints can cause massive changes in alpine plant communities.SCIENCE CHINA-LIFE SCIENCES,67(3),596-610.
MLA Chen, Jianguo,et al."Degeneration of foundation cushion species induced by ecological constraints can cause massive changes in alpine plant communities".SCIENCE CHINA-LIFE SCIENCES 67.3(2024):596-610.
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