Climate change drives plant diversity attrition at the summit of Mount Kenya

IF 8.3 1区 生物学 Q1 PLANT SCIENCES
New Phytologist Pub Date : 2024-12-17 DOI:10.1111/nph.20344
Zhihao Fu, Qinghua Zhan, Jonathan Lenoir, Shengwei Wang, Hong Qian, Jiongming Yang, Wenxuan Sun, Yuvenalis Morara Mbuni, Veronicah Mutele Ngumbau, Guangwan Hu, Xue Yan, Qingfeng Wang, Si-Chong Chen, Yadong Zhou
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引用次数: 0

Abstract

Introduction

Mountains play crucial roles in sustaining biodiversity by simultaneously serving as cradles, museums, or graves (Rangel et al., 2018; Rahbek et al., 2019), and are vital for the survival and sustainable development of human societies (Perrigo et al., 2020). The long-term changes in temperature and precipitation regimes driven by global warming have the potential to cause significant shifts in the elevational distributions of mountain species, thereby increasing the exposure of mountain biota to extinction risks with important consequences on human societies (Lenoir et al., 2008; Moritz et al., 2008; Lenoir & Svenning, 2015; Pecl et al., 2017).

Over the past century, numerous studies have investigated species elevational range shifts for terrestrial plants, animals, and even fungi, reporting upslope range shifts in response to anthropogenic climate change (Lenoir & Svenning, 2013; Freeman et al., 2018; Vitasse et al., 2021; Zu et al., 2021). Temperature has long been recognized as the primary factor limiting the distributions of plants and animals along elevational gradients in mountain systems (Chan et al., 2024). However, the widely held and oversimplified hypothesis that increasing temperature is the main driving force behind species range shifts overlooks the potential compounding impact of changes in precipitation regimes (Crimmins et al., 2011; Zu et al., 2022) and other abiotic as well as biotic factors (Lenoir et al., 2010). For instance, notable downslope shifts of mountain plants in California have been explained by species' niche tracking of regional changes in climatic water balance rather than temperature (Crimmins et al., 2011). Simultaneously, the substantial decrease in precipitation in the high-elevation regions of Mount Jinfo in China has caused native plants to migrate downslope (Zu et al., 2022). We speculate that the increase in temperature caused by climate warming generally promotes the migration of plants towards higher elevations, but a concomitant decrease in precipitation caused by climate warming at high elevations in mountainous regions could have the opposite effect, prompting plants to migrate downslope. Here, we used plant distribution data sourced from herbarium records of a tropical African mountain (i.e. Mount Kenya) to explore the effects of climate change, specifically the contrasting changes in temperature and precipitation regimes between upland (> 3100 m above sea level, asl) and lowland (≤ 3100 m asl) vegetation belts, on the migration patterns of seed plants.

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来源期刊
New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍: New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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