王蒙, 王兴华, 李翔, 等, xxxx. 三亚湾近岸海域浮游甲藻与水环境因子相关性研究[J]. 海洋科学进展, x(x): xx-xx. doi: 10.12362/j.issn.1671-6647.20230815001.
引用本文: 王蒙, 王兴华, 李翔, 等, xxxx. 三亚湾近岸海域浮游甲藻与水环境因子相关性研究[J]. 海洋科学进展, x(x): xx-xx. doi: 10.12362/j.issn.1671-6647.20230815001.
WANG M, WANG X H, LI X, et al, xxxx. Correlation between planktonic dinoflagellates and water environmental factors in sanya bay coastal waters[J]. Advances in Marine Science, x(x): xx-xx. DOI: 10.12362/j.issn.1671-6647.20230815001
Citation: WANG M, WANG X H, LI X, et al, xxxx. Correlation between planktonic dinoflagellates and water environmental factors in sanya bay coastal waters[J]. Advances in Marine Science, x(x): xx-xx. DOI: 10.12362/j.issn.1671-6647.20230815001

三亚湾近岸海域浮游甲藻与水环境因子相关性研究

Correlation Between Planktonic Dinoflagellates and Water Environmental Factors in Sanya Bay Coastal Waters

  • 摘要: 为了解三亚湾近岸海域浮游甲藻分布状况及其与水环境因子的关系,本研究分别于2022年枯水期(4月)、丰水期(7月)、平水期(11月)水采了三亚湾近岸海域浮游甲藻样品及水环境样品,并进行了研究与分析。样品分析结果显示,三亚湾近岸海域共鉴定出甲藻5目13科17属50种,按不同类群分赤潮甲藻有25种,其中有毒赤潮甲藻占13种;三个水期共计优势甲藻10种,其中9种为赤潮甲藻,有毒赤潮甲藻占5种;枯水期、丰水期、平水期第一优势甲藻均为赤潮甲藻,分别为凯伦藻(Karenia sp.)、四齿多甲藻(Peridinium quadridentatum)、环状异帽藻(Heterocapsa circularisquama);同一站点不同水期水环境因子波动较小,空间上无机氮磷营养盐两端站点含量高,中间站点含量低。Spearman相关性分析表明,\mathop \rmNH\nolimits_\rm4^\rm + -\mathrmN 、\mathop \rmNO\nolimits_\rm3^\rm - -\mathrmN 及\mathop \rmNO\nolimits_\rm2^\rm - -\mathrmN 是影响三亚湾近岸海域浮游甲藻群落结构的主要驱动因子。RDA分析结果显示,三亚湾近岸海域优势赤潮甲藻分布与水温、盐度、无机氮磷营养盐含量相关性显著。总体而言,三亚湾近岸海域浮游甲藻尤其是优势赤潮甲藻,对无机氮磷营养盐响应最为密切。本研究调查结果可作为三亚湾浮游甲藻种类分布统计数据的补充,并为分析其与水环境因子的相关性、监测该海域甲藻赤潮风险程度提供基础资料。

     

    Abstract: In order to understand the distribution of planktonic dinoflagellate in the coastal waters of Sanya Bay and its relationship with water environmental factors, samples of planktonic dinoflagellate and water environment in the coastal waters of Sanya Bay were collected in 2022 during dry season (April), wet season (July) and normal season (November). The results of sample analysis showed that, 50 species of dinoflagellates were identified in 5 orders, 13 families, 17 genera, including 25 species of red tide dinoflagellates, of which 13 species were toxic. There were 10 dominant dinoflagellates in the three water stages, of which 9 were red tide dinoflagellates and 5 were toxic red tide dinoflagellates. The first dominant species of dinoflagellates were Karenia sp., Peridinium quadridentatum and Heterocapsa circularisquama in dry season, wet season and normal season, respectively. The fluctuation of water environment factors in different water periods of the same site was small, and the content of inorganic nitrogen and phosphorus was high at both ends of the site and low at the middle site. Spearman correlation analysis showed that, NH4+-N, NO3-N and NO2-N were the main driving factors affecting the community structure of planktonic dinoflagellate in the coastal waters of Sanya Bay. The results of RDA analysis showed that, the distribution of dominant red tide dinoflagellate in the coastal waters of Sanya Bay was significantly correlated with water temperature, salinity, inorganic nitrogen and phosphorus content.In general, the planktonic dinoflagellates, especially the dominant red tide dinoflagellates, responded most closely to inorganic nitrogen and phosphorus nutrients. The results of this study could be used as a supplement to the statistical data on the distribution of planktonic dinoflagellate species in Sanya Bay, and provide basic data for analyzing the correlation between dinoflagellate species and water environmental factors and monitoring the risk of red tide in this sea area.

     

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