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首页> 外文期刊>Estuarine Coastal and Shelf Science >Ecophysiological and morpho-functional responses of mediterranean plants on coastal dunes: How they vary across seasons
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Ecophysiological and morpho-functional responses of mediterranean plants on coastal dunes: How they vary across seasons

机译：地中海植物对沿海沙丘的生态学和态势反应：它们如何在季节上变化

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Coastal dunes of the Mediterranean basin are threatened ecosystems, conservation of which is vital for both ecological and economic reasons. Understanding how dune plants and their habitat interact may deepen our knowledge of the dynamics of coastal environments. An ecophysiological and morpho-functional investigation was carried out throughout all seasons on four species typically found on the fixed dunes of central Italy. They belong to different functional groups: Cistus creticus subsp. Eriocephalus (drought semideciduous), Phillyrea angustifolia (evergreen sclerophyll), Juniperus macrocarpa (conifer) and Spartium junceum (leguminous). The aims of the study were to determine the annual patterns of plant responses, to highlight putative differences of resistance strategies between functional groups, and to identify traits which play a crucial role in plant adaptation to dune environments. Photochemical efficiency was lower in winter for all species, although it was quite steady in Juniperus. Water status never reached critical levels, probably because the summer under analysis was wetter than average. Different strategies of resistance were exhibited: leaf morphological traits and seasonal modulation of leaf pigments changed depending on the functional group. Nevertheless, all species displayed efficient adaptation to the Mediterranean environment involved in the study, showing the critical importance of how physiological and functional adjustments combine in different ways. In particular, leaf area, total carotenoid and total chlorophyll concentrations performed a prominent role in explaining how the studied plants adapt to the fixed dune environment.
机译：地中海盆地的沿海沙丘受到威胁的生态系统，保护对生态和经济原因至关重要。了解沙丘植物及其栖息地互动的互动可能会深化我们对沿海环境动态的了解。在通常在意大利固定的沙丘上发现的四种物种的所有季节进行了生态学和典型功能调查。它们属于不同的官能团：脊柱脊柱脊柱宫。 Eriocephalus（干旱半致死），Phillyrea angustifolia（常绿硬化），杜松宏观（针叶树）和水柱junceum（豆科植物）。该研究的目的是确定植物反应的年度模式，以突出官能团之间的抗性策略的推定差异，并鉴定在植物适应对沙丘环境中发挥至关重要作用的特征。所有物种的冬季，光化学效率较低，虽然在juniperus非常稳定。水状态从未达到关键水平，可能是因为夏天正在分析较潮湿。表现出不同的抗性抗策略：根据官能团改变叶片形态性状和叶片颜料的季节性调节。尽管如此，所有物种都显示出对研究中涉及的地中海环境的高效适应性，表明了以不同方式结合的生理和功能调整如何结合的至关重要。特别是，叶面积，总管素和总叶绿素浓度在解释所研究的工厂如何适应固定的沙丘环境方面进行了突出的作用。

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