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首页> 外文期刊>Continental Shelf Research: A Companion Journal to Deep-Sea Research and Progress in Oceanography >Assessment and physiological state of the Posidonia oceanica meadows in Porto Cristo (Manacor, Spain)
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Assessment and physiological state of the Posidonia oceanica meadows in Porto Cristo (Manacor, Spain)

机译：克里斯托港（西班牙马纳科）的波西多尼亚大洋草甸的评估和生理状况

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In the Mediterranean Sea, Posidonia oceanica is the main seagrass meadow that brings food and shelter to many species. The P. oceanica deterioration is an indicator of its own status, since it is sensitive to many disturbances, such as human impacts or alien species. Lately, oxidative stress has been pointed out as another possible biomarker of the animal and plant status. The aim of this work was to evaluate the physiological status of the P. oceanica meadows in the Porto Cristo bay (Manacor, Mallorca, Balearic Islands, Western Mediterranean), evaluating the possible impact induced by human activity performed in the area. In situ measurements were quantified (shoot density, and the maximum length and width of P. oceanica leaves) by scuba divers. Leaf samples were collected to determine the catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities. The malondialdehyde (MDA) level as marker of lipid peroxidation was also evaluated. Shoot density, and length and width measurements of the leaves in the inner locations of the bay showed inferior structural features than the leaves from the outer areas. CAT, SOD and GPx enzymatic activities and lipid peroxidation were higher in leaves from the internal zones than in the outer placements. In conclusion, the general status of the of P. oceanica meadows on the Porto Cristo Bay according to structural and oxidative biomarkers evidenced a good physiological condition, although the areas nearest to the harbour and the beach reflect signs of human affection. Altogether, it reflects a good physiological condition of the meadows in the external areas of the Porto Cristo Bay. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在地中海，波西多尼亚大洋洲是主要的海草草甸，为许多物种带来食物和庇护所。海洋体育的恶化是其自身状况的指标，因为它对许多干扰（例如人类影响或外来物种）敏感。最近，已经指出氧化应激是动植物状况的另一种可能的生物标记。这项工作的目的是评估克里斯托港湾（Manacor，Mallorca，巴利阿里群岛，地中海西部）的海洋体育草地的生理状况，评估该地区人类活动可能造成的影响。水肺潜水员对原位测量值进行了量化（枝条密度，以及海洋假单胞菌叶的最大长度和宽度）。收集叶片样品以确定过氧化氢酶（CAT），超氧化物歧化酶（SOD）和谷胱甘肽过氧化物酶（GPx）活性。还评估了丙二醛（MDA）水平作为脂质过氧化的标志。海湾内部位置的枝条密度以及叶片的长和宽测量结果显示其结构特征比外部区域的叶片差。内部区域叶片的CAT，SOD和GPx酶活性和脂质过氧化作用高于外部区域。总之，根据结构和氧化生物标记，Porto Cristo湾的P. oceanica草甸的总体状况证明了良好的生理状况，尽管离港口和海滩最近的区域反映出人类受到影响的迹象。总而言之，它反映了克里斯托港外围地区草地的良好生理状况。 （C）2015 Elsevier Ltd.保留所有权利。

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