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首页> 外文期刊>Marine ecology >Comparison of epiphyte algal assemblages on the leaves of marine seagrasses Posidonia oceanica (L.) Delile, Cymodocea nodosa (Ucria) Asch, and the lessepsian Halophila stipulacea (Forssk.) Asch in Chebba (East of Tunisia)
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Comparison of epiphyte algal assemblages on the leaves of marine seagrasses Posidonia oceanica (L.) Delile, Cymodocea nodosa (Ucria) Asch, and the lessepsian Halophila stipulacea (Forssk.) Asch in Chebba (East of Tunisia)

机译：对藻类（Ucria）Cymodea（Ucria）苋菜（Ucria）Ashyian Hallowsa（Forch.）ASCH（突尼斯以东）的叶片叶片（Ucria）Cymodea（Ucria）的比较

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摘要

This study aims to investigate biometric parameters and epiphytic algae on the leaves of three seagrass species Posidonia oceanica, Cymodocea nodosa, and Halophila stipulacea, which co-occur in Eastern coast of Tunisia (islet of Kaboudia, Chebba). Sampling was conducted at six stations (5 m depth) during March 2017. Biometrical measurements showed that shoot density and leaf surface area of P. oceanica and the C. nodosa were higher than those of H. stipulacea. Epiphyte covers were correlated with biometric parameters of the three host plants. Epiphyte algal assemblages were more abundant and more diversified on the leaves of P. oceanica and C. nodosa than those on the leaves of H. stipulacea. Significant differences were found for all epiphytic algae groups among the three seagrass species. Seagrass species characteristics (meadow type, shape forms of leaves, life span, and growth rate) seem to be responsible of these dissimilarities in epiphytic algae communities. No apparent negative interactions of H. stipulacea with P. oceanica and C. nodosa have been observed. No invasive epiphytic algae species were found on the leaves of H. stipulacea. It seems that it is a recent installation of H. stipulacea in this area since its density (average 416.23 shoot m(-2)) was relatively low.
机译：本研究旨在研究生物统计参数和果皮叶片的生物识别参数和果皮藻类，在突尼斯东部海岸（Cheboudia）的东部海岸共同发生。 2017年3月在六个站（5米深度）进行了采样。生物测量表明，P. Oceanica和C.Nodosa的枝条表面积高于H.恒核痤疮。继父覆盖物与三个宿主植物的生物识别参数相关。在P. Oceanica和C. nodosa的叶子上比甜度叶片的叶子更丰富，更多样化。对于三种海草物种中的所有果皮藻类，发现了显着的差异。海草物种特征（草甸类型，叶片形状的叶片，寿命和生长速率）似乎负责果实藻类社区中的这些异化。已经观察到H. Hyipulacea与P. Oceanica和C.Nodosa的明显阴性相互作用。在H.Tipulacea的叶片上发现了没有侵袭性果实藻类物种。似乎它是最近在该地区的H.恒舒培的安装，因为它的密度（平均416.23芽M（-2））相对较低。

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