Shrub canopies preserve climatic niche disparity among recruit species in Mediterranean drylands

IF 6.3 1区 环境科学与生态学 Q1 ECOLOGY
Jordi Margalef-Marrase, Francisco Lloret, Julio M. Alcántara, José Antonio Navarro-Cano, Miguel Verdú
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引用次数: 0

Abstract

灌木冠层在地中海旱地保留了新物种间的气候生态位差异
植物的生产性能在气候条件下是最优的,特别是在早期建立时,当条件偏离这个最优时,植物的生产性能就会下降。然而,灌木可以通过在其树冠下创造更适宜的小气候来缓冲不利的气候条件,促进不同气候生态位物种的建立。在10个地中海灌木林地中,我们比较了灌木树冠下与开阔地下植物的气候生态位差异和系统发育结构,综合环境、生态位和系统发育数据,揭示了潜在的非生物和进化驱动因素。我们在10个地中海灌丛地中发现,灌木冠层下建立的新植物的气候生态位差异明显大于开阔地。这种模式与灌木驱动的微环境异质性仅弱相关,使用光合有效辐射的变异性作为粗略的代理来估计,这表明额外的非生物因素也可能有助于吸收生态位差异。此外,灌木下的招募组合平均由亲缘关系较远的物种组成。结合其气候生态位干旱响应轴的系统发育保守性,这种模式导致了冠层下主要气候生态位轴差异较大的新物种共发生。合成。植物冠层可以吸收具有广泛气候生态位多样性的物种,这可能在持续和未来气候变化下维持生物多样性方面发挥作用。
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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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