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首页> 外文期刊>Marine ecology >Peripheral communities of the Eastern Lau Spreading Center and Valu Fa Ridge: community composition, temporal change and comparison to near-vent communities
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Peripheral communities of the Eastern Lau Spreading Center and Valu Fa Ridge: community composition, temporal change and comparison to near-vent communities

机译：东部流浪中心和瓦卢法里奇的外围社区：社区组成，时间变化以及与临近社区的比较

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摘要

Western Pacific hydrothermal vents will soon be subjected to deep-sea mining and peripheral sites are considered the most practical targets. The limited information on community dynamics and temporal change in these communities makes it difficult to anticipate the impact of mining activities and recovery trajectories. We studied community composition of peripheral communities along a cline in hydrothermal chemistry on the Eastern Lau Spreading Center and Valu Fa Ridge (ELSC-VFR) and also studied patterns of temporal change. Peripheral communities located in the northern vent fields of the ELSC-VFR are significantly different from those in the southern vent fields. Higher abundances of zoanthids and anemones were found in northern peripheral sites and the symbiont-containing mussel Bathymodiolus brevior, brisingid seastars and polynoids were only present in the northern peripheral sites. By contrast, certain faunal groups were seen only in the southern peripheral sites, such as lollipop sponges, pycnogonids and ophiuroids. Taxonomic richness of the peripheral communities was similar to that of active vent communities, due to the presence of non-vent endemic species that balanced the absence of species found in areas of active venting. The communities present at waning active sites resemble those of peripheral sites, indicating that peripheral species can colonize previously active vent sites in addition to settling in the periphery of areas of venting. Growth and mortality were observed in a number of the normally slow-growing cladorhizid stick sponges, indicating that these animals may exhibit life history strategies in the vicinity of vents that differ from those previously recorded. A novel facultative association between polynoids and anemones is proposed based on their correlated distributions.
机译：西太平洋热液喷口将很快进行深海开采，外围地区被认为是最实际的目标。这些社区中社区动态和时间变化的信息有限，因此很难预测采矿活动和恢复轨迹的影响。我们在东部流传中心和Valu Fa Ridge（ELSC-VFR）上研究了沿热液化学变化沿线周边社区的群落组成，并研究了时间变化的模式。位于ELSC-VFR北部通风区的周边社区与南部通风区的周边社区有显着差异。在北部外围地区发现了较高数量的虫类和海葵，而仅在北部外围地区存在含共生体的贻贝Bathymodiolus brevior，Brisingid海星和polynoids。相比之下，某些动物群仅在南部外围地区可见，例如棒棒糖海绵，暴龙和蛇类。外围群落的分类学丰富度与活动通风社区的相似，这是由于非通风特有物种的存在平衡了活动通风区域内物种的缺乏。减弱的活动位点上存在的群落类似于外围位点，这表明外围物种除了定居在通风区的外围外，还可以定居先前活跃的排气位点。在许多正常缓慢生长的克拉多角棒海绵中观察到了生长和死亡率，这表明这些动物可能在通风口附近表现出与以前记录的生活史不同的生活史策略。基于它们的相关分布，提出了多义词与海葵之间的新型兼并关系。

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  • 来源
    《Marine ecology》 |2016年第3期|599-617|共19页
  • 作者

    Sen Arunima; Kim Stacy; Miller Alex J.; Hovey Kyle J.; Hourdez Stéphane; Luther George W.; Fisher Charles R.;

  • 作者单位

    IFREMER Centre de Bretagne REM/EEP/LEP Plouzané France;

    Moss Landing Marine Laboratories Benthic Lab Moss Landing CA USA;

    The Pennsylvania State University State College University Park Department of Biology PA USA;

    The Pennsylvania State University State College University Park Department of Biology PA USA;

    CNRS UMR 7144 Adaptation et Biologie des Invertébrés en Conditions Extrêmes Roscoff France;

    Université Paris 06 UMR 7144 Adaptation et Biologie des Invertébrés en Conditions Extrêmes Roscoff France;

    University of Delaware School of Marine Science and Policy Lewes DE USA;

    The Pennsylvania State University State College University Park Department of Biology PA USA;

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  • 正文语种 eng
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  • 关键词

    Deep‐sea mining; hydrothermal vents; Lau Basin; peripheral;

    机译：深海采矿;热液喷口;L盆地;外围;

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