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首页> 外文期刊>Estuarine Coastal and Shelf Science >Dynamics of the marine planktonic diatom family Chaetocerotaceae in a Mediterranean coastal zone
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Dynamics of the marine planktonic diatom family Chaetocerotaceae in a Mediterranean coastal zone

机译：地中海沿岸海域浮游硅藻科Chaetocerotaceae的动力学

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摘要

The planktonic diatoms belonging to two genera Chaetoceros and Bacteriastrum, included within the family Chaetocerotaceae, are ecologically important as they represent an important component of the phytoplankton in the coastal regions and are often among bloom-forming taxa. We analysed the chaetocerotacean species composition and abundances in the coastal area of northeastern Adriatic in a biweekly study conducted from September 2008 to October 2009 with the aim of investigating seasonal dynamics and species succession on a fine temporal scale and determining the most important ecological factors influencing their distribution. The study identified seven Chaetoceros and three Bacteriastrum species as major phytoplankton components showing the clear annual succession and two types of blooms (one species/multi species) governed by differing ecological conditions. Autumn bloom was composed of 20 chaetocerotacean species with Chaetoceros contortus and Chaetoceros vixvisibilis alternating in dominance. The summer period was characterized by spreading of freshwater from the Po River up to the eastern coast increasing availability of phosphate which triggered the monospecific Chaetoceros vixvisibilis bloom. We explained the chaetocerotacean dominant species succession pattern by the environmental parameters, with the temperature, salinity and phosphate availability as most important factors driving the species seasonality. (C) 2016 Elsevier Ltd. All rights reserved.
机译：属于隶属于Chaetocerotaceae科的Chaetoceros和Bacteriastrum两个属的浮游硅藻具有重要的生态意义，因为它们代表了沿海地区浮游植物的重要组成部分，通常属于形成花的类群。我们于2008年9月至2009年10月进行了为期两周的双周研究，分析了亚得里亚海东北沿海地区的壳动物的物种组成和丰度，目的是在一个精细的时间尺度上调查季节动态和物种演替，并确定影响它们的最重要的生态因子。分配。这项研究确定了七个浮游动物和三个细菌属物种为浮游植物的主要组成部分，显示出清晰的年度演替和受不同生态条件支配的两种开花（一种/多种）。秋季开花由20种猪尾鲸科动物组成，其中Chaetoceros contortus和vichavisovisvisbilis在优势中交替。夏季时期的特征是淡水从波河扩散到东部沿海地区，增加了磷酸盐的利用率，从而引发了单一特有的南美锥栗藻开花。我们通过环境参数解释了角鲨科优势种的演替模式，其中温度，盐度和磷酸盐的可用性是驱动物种季节性的最重要因素。 （C）2016 Elsevier Ltd.保留所有权利。

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