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A non-native bryozoan creates novel substrate on the mudflats in San Francisco Bay

机译:非本地的苔藓动物在旧金山湾的泥滩上创造了新的基质

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摘要

A non-native bryozoan, Schizoporella errata, forms extensive patches of free-living balls and reef-like structures (bryoliths) on the mudflats in south San Francisco Bay, California. The ball-like bryoliths range from 2 to 20 cm in diameter, and the reef-like structures can be nearly 1 m across. While S. errata is known to form bryoliths in other locations, free-living aggregations like these have not been reported. Colony morphology appears to be a plastic trait as analysis of relationships among forms using cytochrome oxidase subunit I (COI) nucleotide sequence data revealed no genetic separation. We recorded > 50 species of algae and invertebrates living on and in the bryoliths and determined the invasion status for 34 of the 50 species. Of the 34, 25 (74 %) were non-natives and included fouling species that require hard substrate. The bryoliths may thus facilitate colonization by invaders on the mudflats and serve as stepping stones between the limited hard substrate habitats in the Bay.
机译:一个非本土的苔藓动物,Schizoporella errata,在加利福尼亚州南旧金山湾的泥滩上形成了大片的自生球和礁石样结构(苔藓石)。球形苔藓石的直径范围为2到20 cm,礁石结构的跨度可以接近1 m。尽管已知沙雷氏菌在其他地方会形成苔藓石,但尚未见到像这样的自由生活聚集体。菌落形态似乎是一个可塑性特征,因为使用细胞色素氧化酶亚基I(COI)核苷酸序列数据对形式之间的关系进行分析后发现没有遗传分离。我们记录了生活在苔藓石上和之中的> 50种藻类和无脊椎动物,并确定了这50种中的34种的入侵状态。在这34个中,有25个(74%)是非本地人,包括需要坚硬底物的污垢物种。因此,苔藓石可以促进入侵者在泥滩上定居,并在海湾有限的硬质底物栖息地之间充当垫脚石。

著录项

  • 来源
    《Marine ecology progress series》 |2010年第12期|P.129-139|共11页
  • 作者单位

    Smithsonian Environmental Research Center, 3152 Paradise Drive, Tiburon, California 94965, USA Department of Environmental Science and Policy, University of California, Davis, 2142 Wickson Hall, One Shields Avenue, Davis, California 95616, USA;

    rnDepartment of Environmental Science and Policy, University of California, Davis, 2142 Wickson Hall, One Shields Avenue, Davis, California 95616, USA;

    rnBiological Sciences, San Jose State University, San Jose, California 95192, USA;

    Marine Science Institute, 500 Discovery Parkway, Redwood City, California 94063, USA;

    rnNatural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007, USA;

    Moss Landing Marine Laboratories, Moss Landing, California 95039, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    bryoliths; bryozoans; schizoporella; habitat modification; invasive species; facilitation;

    机译:巨石苔藓虫精神分裂症栖息地改造;入侵物种;便利化;

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