Most Mediterranean wetlands are overexploited and degraded by different factors and are especially vulnerable to alien and invasive species. Currently, there is still a lack of knowledge on certain aspects of plant invasions, especially from an applied point of view, as key tools in restoration and conservation programmes. In this sense, Cortaderia selloana has showed a rapid expansion in the western Mediterranean Basin, threatening habitats of special interest such as wetlands. A comparative study between C. selloana and Saccharum ravennae, a representative plant of Mediterranean marshlands, was carried out to characterize the biological pattern that has made C. selloana a potential threat. The role of these plant species in soil seed banks and the potential competitive displacement of S. ravennae were evaluated through seed germination and viability tests under accelerated ageing conditions and seedling root development, considering seed morphological characteristics, seed maturity and plant sexuality as influential factors. Additionally, the potential allelopathic effects of C. selloana leaves on S. ravennae seed germination were evaluated. The study found differences between the species in all the tested parameters, seed morphology, germination response and longevity, adsorption isotherm curves, and allelopathic effects. All these factors establish a complex interaction that contributes to the proven invasive character of C. selloana. These results provide useful data for eradication and management programmes.

中文翻译：

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地中海湿地入侵和本地草种的种子库寿命和发芽生态

大多数地中海湿地因不同因素而被过度开发和退化，特别容易受到外来和入侵物种的影响。目前，植物入侵的某些方面仍然缺乏知识，特别是从应用的角度来看，作为恢复和保护计划的关键工具。从这个意义上说，Cortaderia selloana 在地中海西部盆地表现出快速扩张，威胁着特别感兴趣的栖息地，如湿地。进行了 C. selloana 和 Saccharum ravennae（地中海沼泽地的代表性植物）之间的比较研究，以表征使 C. selloana 成为潜在威胁的生物模式。这些植物物种在土壤种子库中的作用和 S. 将种子形态特征、种子成熟度和植物性作为影响因素，通过加速老化条件下的种子萌发和活力测试和幼苗根部发育对拉文进行了评估。此外，还评估了 C. selloana 叶子对 S. ravennae 种子萌发的潜在化感作用。该研究发现，在所有测试参数、种子形态、发芽反应和寿命、吸附等温线曲线和化感作用方面，物种之间存在差异。所有这些因素建立了一种复杂的相互作用，有助于证实 C. selloana 的侵入性特征。这些结果为根除和管理计划提供了有用的数据。考虑种子形态特征、种子成熟度和植物性状作为影响因素。此外，还评估了 C. selloana 叶子对 S. ravennae 种子萌发的潜在化感作用。该研究发现，在所有测试参数、种子形态、发芽反应和寿命、吸附等温线曲线和化感作用方面，物种之间存在差异。所有这些因素建立了一种复杂的相互作用，有助于证实 C. selloana 的侵入性特征。这些结果为根除和管理计划提供了有用的数据。考虑种子形态特征、种子成熟度和植物性状作为影响因素。此外，还评估了 C. selloana 叶子对 S. ravennae 种子萌发的潜在化感作用。该研究发现，在所有测试参数、种子形态、发芽反应和寿命、吸附等温线曲线和化感作用方面，物种之间存在差异。所有这些因素建立了一种复杂的相互作用，有助于证实 C. selloana 的侵入性特征。这些结果为根除和管理计划提供了有用的数据。该研究发现，在所有测试参数、种子形态、发芽反应和寿命、吸附等温线曲线和化感作用方面，物种之间存在差异。所有这些因素建立了一种复杂的相互作用，有助于证实 C. selloana 的侵入性特征。这些结果为根除和管理计划提供了有用的数据。该研究发现，在所有测试参数、种子形态、发芽反应和寿命、吸附等温线曲线和化感作用方面，物种之间存在差异。所有这些因素建立了一种复杂的相互作用，有助于证实 C. selloana 的侵入性特征。这些结果为根除和管理计划提供了有用的数据。