Botanica Pacifica. A journal of plant science and conservation 2023. Preprint
Article first published online: 06 JAN 2023 | DOI: 10.17581/bp.2023.12103
The CSR strategies of alpine plants and community functional diversity in the Eastern Qinghai-Tibetan mountains
Yushuang Wu 1
,
Tatiana G. Elumeeva 2 ,
Elena S. Kazantseva 3,4 ,
Yan Wu 4 ,
Qian Wang 4 ,
Ksenia V. Dudova 2 &
Vladimir G. Onipchenko 2,5 1 Faculty of Biology, Shenzhen MSU-BIT University, Shenzhen, China
2 Department of Ecology and Plant Geography, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
3 A.M. Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia
4 Chengdu Institute of Biology CAS, Chengdu, China
5 Teberda national park, Karachay-Cherkess Republic, Russia
Many alpine communities of the Tibetan plateau experience both harsh climates and heavy grazing, and the adaptations to such environment are realized in plant functional traits and strategies. We tested, which leaf traits allow to dominate in the two wide-spread alpine communities of the Eastern Qinghai-Tibetan mountains, Kobresia alpine meadows and alpine fens, and do meadows and fens differ by community-weighted dominance-linked traits, strategy affinities, and functional diversity. Lower leaf dry matter content (LDMC) and higher specific leaf area (SLA) provides the species dominance in Kobresia alpine meadows, while size traits do not influence the dominance. Both LDMC and SLA have low functional evenness and divergence in the two communities. The prevail of stress-tolerators reflects the abiotic environment of alpine plants, but high affinities to ruderal strategy are possibly related to grazing.
У Ю., Елумеева Т.Г., Казанцева Е.С., У Я., Ван Ц., Дудова К.В., Онипченко В.Г. Эколого-ценотические CSR стратегии альпийских растений и функциональное разнообразие сообществ на востоке Цинхай-Тибетского нагорья. Многие альпийские сообщества Тибетского нагорья существуют в условиях сурового климата и интенсивного выпаса. Адаптации к таким условиям представлены функциональными признаками растений и стратегиями. Мы изучили, какие признаки листьев позволяют доминировать на альпийских кобрезиевых лугах и на альпийских болотах – сообществах, которые широко распространены в альпийском поясе востока Цинхай-Тибетского нагорья. Мы проверили, различаются ли болота и луга по средневзвешенным признакам, связанным с доминированием, стратегиями и функциональным разнообразием. Более низкое содержание сухого вещества (LDMC) в листьях и более высокая удельная листовая поверхность (SLA) способствуют доминированию видов на альпийских кобрезиевых лугах, тогда как размерные характеристики (площадь и масса листа) не влияют на доминирование. В изученных сообществах признаки LDMC и SLA имеют низкую функциональную выравненность и дивергенцию. Преобладание стресс-толерантов отражает абиотические условия обитания альпийских растений, а большой вклад в рудеральную стратегию, возможно, связан с влиянием выпаса.
Keywords: functional traits, functional diversity, CSR strategy, alpine plants, функциональные признаки, функциональное разнообразие, CSR стратегии, альпийские растения
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