气候变化领域集成服务门户(CCPortal): Shifts in grasses diversity patterns between two contrasting 40-year climate periods in tropical dry islands

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DOI	10.1002/ecs2.4837
	Shifts in grasses diversity patterns between two contrasting 40-year climate periods in tropical dry islands
	Duarte, Maria Cristina; Rocha, Vanezia; Fernandez-Palacios, Jose Maria; Gomes, Isildo; Neto, Carlos; Costa, Jose C.; Branquinho, Cristina; Romeiras, Maria M.
发表日期	2024
ISSN	2150-8925
起始页码	15
结束页码	4
卷号	15 期号:4
英文摘要	Grasses are one of the most successful and dispersed plant families worldwide and their environmental and economic values are widely acknowledged. They dominate the landscape of Cabo Verde, the southernmost and driest archipelago of Macaronesia, and are relevant natural resources for local populations, but a comprehensive evaluation of their distribution patterns is still lacking. In this study, we aim to evaluate the potential effects of climate change using the long-term data concerning grass distribution in Cabo Verde and the widely recognized climatic variability of this archipelago, which entails a huge irregularity in spatial and temporal rainfall. We identified two contrasting climatic periods (wet, from 1929 to 1968, and dry, from 1969 to 2007) and gathered all the information available from the bibliography, herbaria, and fieldwork concerning spontaneous grass species recorded in Cabo Verde during those two periods, which amounted to 107 taxa. This information was then used to disclose the patterns of grass diversity as related to climatic and topographic variables (altitude and windward vs. leeward aspects). Different altitudinal shifts in the distribution patterns of grass species assemblages and an assemblage specific to the wet period were revealed by comparing the two climatic periods. The role of exposure in delimiting the altitudinal distribution of the various assemblages was highlighted; the trade winds clearly determine the distribution of grass assemblages. We detected shifts in the distribution of grass assemblages according to the climatic periods (related to the macroclimate) and local topographic factors (associated with mesoclimates). Also, functional traits (i.e., annuals vs. perennials, C3 vs. C4 grasses, and tropical vs. temperate species) were found to vary between wet and dry periods, as well as with altitude and with slope aspect. Understanding species distributions and the role of the climatic variability of Cabo Verde is crucial to predicting how climate change will affect them and thus to support effective management and conservation actions.
英文关键词	Africa; Cabo Verde; climate variability; drought; environmental adaptations; functional traits; Macaronesia; Poaceae
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001203892200001
来源期刊	ECOSPHERE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290939
作者单位	Universidade de Lisboa; Universidade de Lisboa; Universidade de Lisboa; Universidad de la Laguna; Universidade de Lisboa
推荐引用方式 GB/T 7714	Duarte, Maria Cristina,Rocha, Vanezia,Fernandez-Palacios, Jose Maria,et al. Shifts in grasses diversity patterns between two contrasting 40-year climate periods in tropical dry islands[J],2024,15(4).
APA	Duarte, Maria Cristina.,Rocha, Vanezia.,Fernandez-Palacios, Jose Maria.,Gomes, Isildo.,Neto, Carlos.,...&Romeiras, Maria M..(2024).Shifts in grasses diversity patterns between two contrasting 40-year climate periods in tropical dry islands.ECOSPHERE,15(4).
MLA	Duarte, Maria Cristina,et al."Shifts in grasses diversity patterns between two contrasting 40-year climate periods in tropical dry islands".ECOSPHERE 15.4(2024).