Biogeographical Distribution and Community Assembly of Active Protistan Assemblages Along an Estuary to a Basin Transect of the Northern South China Sea.
Biogeographical Distribution and Community Assembly of Active Protistan Assemblages Along an Estuary to a Basin Transect of the Northern South China Sea.
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南海北部河口至盆地断面沿线活跃原生生物群落的生物地理分布和群落聚集
DOI：
10.3390/microorganisms9020351
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发表时间：
2021-02-10
期刊：
影响因子：
4.5
通讯作者：
Xu D
中科院分区：
文献类型：
--
作者：
Li R;Hu C;Wang J;Sun J;Wang Y;Jiao N;Xu D
海洋原生生物对全球重要的生物过程，包括物质和能量的地球化学循环至关重要。然而，与原核生物相比，环境因素如何决定区域范围内活跃原生生物群落的多样性和分布仍不清楚。本研究利用高通量测序技术对南海北方河口-盆地样带的小亚基核糖体RNA（SSU rRNA）V9高变区序列进行分析，研究了该样带的生物多样性、群落组成以及原生生物总类群、丰度类群和稀有类群的潜在驱动因子。总体而言，硅藻和尾藻在表层水体中含量较高;异养原生生物包括螺旋藻和海洋层藻3型（MAST-3）在城市化程度较高的珠江口附近的次表层沃茨中含量较高;绿藻和浮游藻类在叶绿素最大深度处含量较高，而壶藻、放射虫和掘形藻在深层水体中含量较高。盐度，其次是水深，温度和其他生物因素，是控制不同的垂直和水平分布的原生生物的总量和丰富的主要因素。罕见的类群是由水深驱动的，其次是温度，盐度和PO 43-的浓度。原生动物群落的活动主要受扩散限制的驱动，其次是漂移和其他生态过程。
Marine protists are essential for globally critical biological processes, including the biogeochemical cycles of matter and energy. However, compared with their prokaryotic counterpart, it remains largely unclear how environmental factors determine the diversity and distribution of the active protistan communities on the regional scale. In the present study, the biodiversity, community composition, and potential drivers of the total, abundant, and rare protistan groups were studied using high throughput sequencing on the V9 hyper-variable regions of the small subunit ribosomal RNA (SSU rRNA) along an estuary to basin transect in the northern South China Sea. Overall, Bacillariophyta and Cercozoa were abundant in the surface water; heterotrophic protists including Spirotrichea and marine stramenopiles 3 (MAST-3) were more abundant in the subsurface waters near the heavily urbanized Pearl River estuary; Chlorophyta and Pelagophyceae were abundant at the deep chlorophyll maximum depth, while Hacrobia, Radiolaria, and Excavata were the abundant groups in the deep water. Salinity, followed by water depth, temperature, and other biological factors, were the primary factors controlling the distinct vertical and horizontal distribution of the total and abundant protists. Rare taxa were driven by water depth, followed by temperature, salinity, and the concentrations of PO43−. The active protistan communities were mainly driven by dispersal limitation, followed by drift and other ecological processes.
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稀有生物圈的复苏有助于生态系统活动的脉冲。
影响因子：
5.2
作者：
Aanderud ZT;Jones SE;Fierer N;Lennon JT
通讯作者：
Lennon JT
影响因子：
5.1
作者：
Countway, Peter D.;Gast, Rebecca J.;Caron, David A.
通讯作者：
Caron, David A.
影响因子：
4.5
作者：
Countway, Peter D.;Vigil, Patrick D.;Caron, David A.
通讯作者：
Caron, David A.
影响因子：
5.1
作者：
Cabello, Ana M.;Latasa, Mikel;Massana, Ramon
通讯作者：
Massana, Ramon
影响因子：
56.9
作者：
Dell'Anno, A;Danovaro, R
通讯作者：
Danovaro, R