Eike Corina Albrecht, Svenja Dobbert, Roland Pape, Jörg Löffler
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引用次数: 0
摘要
地中海高山植物暴露在严酷的环境中，迫使它们采取适应性强的生理策略，以抵御冬季寒冷和夏季干旱带来的双重压力。虽然这种生长策略在物种面对持续的气候变异时的恢复能力方面具有重要意义，但人们对它们的了解还不够全面。在这里，我们旨在了解一种广泛分布的地中海-高山物种（Cytisus galianoi Talavera & Gibbs）的灌木生长情况。通过对该物种分布区的树干直径测量获得的茎干直径变化的长期时间序列，我们能够描述其生长的时空可塑性。此外，将与水有关的茎秆直径波动与不可逆的茎秆增量分离开来，使我们能够厘清该物种的季节性生长模式。利用对现场环境条件的精细测量，我们可以通过相关分析和偏最小二乘法回归确定控制物种生长过程的微观生态驱动因素。我们首次展示了该物种对其分布区空间异质性的适应性。我们的研究结果突出表明，双模性和整体高生长可塑性的结合可能使该物种能够覆盖高寒地区的广泛地理范围和各种天气条件。我们展示了 C. galianoi 双模生长的环境控制，以及生长前环境控制的重要性，这导致了明显的延续效应。这使其在抵抗不利生长条件和适应不断变化的条件方面具有重大优势。综述：总之，我们的研究结果增进了对该物种生态位的了解，并表明即使在冬季和生长活跃期的不利条件下，前期光合作用活动也能帮助 C. galianoi 发挥优势，这挑战了生长与特定季节耦合的一般假设，并表明该物种有能力适应未来的气候变异。
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 We do not publish papers concerned solely with cultivated plants and agricultural ecosystems.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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