Spatial and temporal variability in the response of phytoplankton and prokaryotes to B-vitamin amendments in an upwelling system
Spatial and temporal variability in the response of phytoplankton and prokaryotes to B-vitamin amendments in an upwelling system
复制标题
上升流系统中浮游植物和原核生物对 B 族维生素修正反应的空间和时间变异性
DOI：
10.5194/bg-17-2807-2020
复制
发表时间：
2020
期刊：
影响因子：
4.9
通讯作者：
E. Teira
中科院分区：
文献类型：
--
作者：
V. Joglar;Antero Prieto;Esther Barber;M. Hernández;E. Fernández;E. Teira
抽象。我们实验性地评估了时间（日间和
季节间）和浮游微生物对
维生素B12和/或B1供给（单独或与无机
营养物）在大西洋东北部的沿海和海洋沃茨中。
浮游植物和原核生物（在较小程度上）受到以下因素的强烈限制
无机养分浮游微生物响应的日间变化
与季节间变化相比，B族维生素是有限的，这表明
B族维生素的供应可能部分受到一些因素的控制，
以季节性规模运行。叶绿素a（Chl a）浓度和
原核生物量（PB）显着增加后，B-维生素的修正案
在216例（36次试验× 6次处理）中，分别为13%和21%。这些积极的反应大多是由
单独含B12或B12与B1结合的处理
沃茨，这是一致的显着较低的平均维生素B12的环境浓度相比，在沿海站。负
反应，这意味着减少叶绿素a或PB，代表21%，
浮游植物和26%的原核生物。添加B1刺激生长
在原核生物中比在浮游植物中更常见，这表明B1
营养缺陷型在采样区可能是更广泛的原核生物比
在浮游植物中。对B族维生素的阴性反应普遍存在于
夏季沿海表面沃茨，并与高贡献
对原核生物群落的影响。这一观察结果表明
B12和/或B1的外部供应可能促进负面相互作用，
当B族维生素营养缺陷型丰富时，微生物成分之间存在差异。的
微生物对B12和/或B1改良剂的反应模式显著
与原核生物群落组成的变化相关，
强调了原核生物在海洋维生素B循环中的关键作用，
生态系统
Abstract. We experimentally evaluated the temporal (interday and
interseason) and spatial variability in microbial plankton responses to
vitamin B12 and/or B1 supply (solely or in combination with inorganic
nutrients) in coastal and oceanic waters of the northeast Atlantic Ocean.
Phytoplankton and, to a lesser extent, prokaryotes were strongly limited by
inorganic nutrients. Interday variability in microbial plankton responses
to B vitamins was limited compared to interseason variability, suggesting
that B-vitamin availability might be partially controlled by factors
operating at seasonal scale. Chlorophyll a (Chl a) concentration and
prokaryote biomass (PB) significantly increased after B-vitamin amendments
in 13 % and 21 %, respectively, of the 216 cases (36 experiments × 6 treatments). Most of these positive responses were produced by
treatments containing either B12 solely or B12 combined with B1 in oceanic
waters, which was consistent with the significantly lower average vitamin-B12 ambient concentrations compared to that in the coastal station. Negative
responses, implying a decrease in Chl a or PB, represented 21 % for
phytoplankton and 26 % for prokaryotes. Growth stimulation by B1 addition
was more frequent on prokaryotes than in phytoplankton, suggesting that B1
auxotrophy in the sampling area could be more widespread in prokaryotes than
in phytoplankton. Negative responses to B vitamins were generalized in
coastal surface waters in summer and were associated with a high contribution
of Flavobacteriales to the prokaryote community. This observation suggests
that the external supply of B12 and/or B1 may promote negative interactions
between microbial components when B-vitamin auxotrophs are abundant. The
microbial response patterns to B12 and/or B1 amendments were significantly
correlated with changes in the prokaryotic community composition,
highlighting the pivotal role of prokaryotes in B-vitamin cycling in marine
ecosystems.
影响因子：
64.8
作者：
Browning, Thomas J.;Achterberg, Eric P.;Moore, C. Mark
通讯作者：
Moore, C. Mark
影响因子：
5.1
作者：
Kazamia, Elena;Czesnick, Hjoerdis;Smith, Alison Gail
通讯作者：
Smith, Alison Gail
影响因子：
10.7
作者：
Helliwell, Katherine E.;Wheeler, Glen L.;Smith, Alison G.
通讯作者：
Smith, Alison G.