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An assessment of Dinophysis blooms in the coastal Arabian Sea

机译：阿拉伯海沿海地区恐龙的花开评估

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摘要

Dinoflagellate blooms of the genus Dinophysis occur regularly in the coastal Arabian Sea. By producing toxins, which may accumulate in marine bivalves, they impose threat to human health. Using time-series data on environmental variables (e.g., nutrients, sea surface temperature and salinity) and concurrent Dinophysis abundances for the surface waters along the coast of the southeastern Arabian Sea during the period 1990-2010, we investigate whether potential climate change signals play a role in driving blooms of Dinophysis spp. A logistic Generalized Linear Model was adopted to test the effect of environmental variables on Dinophysis abundances over a range of threshold values (10~2-10~5 cells m~(-3)) for blooms. Some of the extreme events occurred during the pre-monsoon (March-May) periods. Model validation suggested a threshold of 10~5 cells m~(-3) to be better than other thresholds in examining the Dinophysis abundances, and the variation in this threshold is explained by sea surface temperature, salinity, dissolved inorganic nitrogen to phosphorus ratio and total suspended solids (turbidity). Fate of the Dinophysis blooms in the coastal Arabian Sea for different climate change scenarios is discussed.
机译：恐龙科的恐龙鞭毛花经常在阿拉伯海沿海出现。通过产生可能在海洋双壳类动物体内积累的毒素，它们对人类健康构成了威胁。利用有关环境变量（例如养分，海面温度和盐度）的时间序列数据以及阿拉伯东南部沿海沿岸1990-2010年期间表层水的并发生物物理丰度，我们调查了潜在的气候变化信号是否在起作用在推动Dinophysis spp绽放方面发挥了作用。采用logistic广义线性模型测试环境变量对开花阈值范围（10〜2-10〜5个细胞m〜（-3））范围内对Dinophysis丰度的影响。一些极端事件发生在季风前（3月至5月）期间。模型验证表明，在检查Dinophysis丰度时，阈值应为10〜5个细胞m〜（-3），优于其他阈值，该阈值的变化可通过海面温度，盐度，溶解的无机氮磷比和总悬浮固体（浊度）。讨论了不同气候变化情景下阿拉伯海沿海地区恐龙生物的命运。

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  • 来源
    《Harmful Algae》 |2014年第4期|29-35|共7页
  • 作者

    Arvind Singh; Karin Harding; H.R.V. Reddy; Anna Godhe;

  • 作者单位

    Department of Biological and Environmental Sciences, University of Gothenburg, SE 405 30 Goeteborg, Sweden,GEOMAR - Helmholtz Zentrum fuer Ozeanforschung Kiel, 24105 Kiel, Germany;

    Department of Biological and Environmental Sciences, University of Gothenburg, SE 405 30 Goeteborg, Sweden;

    Department of Aquatic Environment Management, Karnataka Veterinary Animal and Fisheries Sciences University, College of Fisheries, Mangalore 575002, India;

    Department of Biological and Environmental Sciences, University of Gothenburg, SE 405 30 Goeteborg, Sweden;

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  • 正文语种 eng
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  • 关键词

    Dinophysis; Time-series; Harmful algal blooms; Arabian Sea; Generalized Linear Model;

    机译：恐龙时间序列;有害的藻华;阿拉伯海;广义线性模型;

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