Distribution of mixotrophic nanoflagellates along the latitudinal transect of the central North Pacific
Distribution of mixotrophic nanoflagellates along the latitudinal transect of the central North Pacific
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混合营养型纳米鞭毛虫沿北太平洋中部纬度横断面的分布
DOI：
10.1007/s10872-016-0393-x
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发表时间：
2017
影响因子：
2.3
通讯作者：
F. Hashihama
中科院分区：
文献类型：
--
作者：
S. Sato;T. Shiozaki;F. Hashihama
为了阐明公海中混合营养型纳米鞭毛虫的生态重要性以及调节其丰度的环境因素，我们沿着西经170°的横断面调查了北太平洋中部自养型、混合营养型和异养型纳米鞭毛虫的纬度分布。通过荧光标记细菌方法测量，从赤道到亚北极地区，混合营养型纳米鞭毛虫对细菌总数做出了显着贡献（26-64%），这强化了混合营养型纳米鞭毛虫作为公海营养链的重要性。在营养贫乏的亚热带环流中，混合营养型纳米鞭毛虫占总质体纳米鞭毛虫的比例明显高于其他地区，有时超过 10%。此外，该比例与热带和亚热带水域中的可溶性活性磷浓度呈负相关，这表明低养分利用率可能促进质体纳米鞭毛虫的吞噬作用，这可能解释了纳米级真核浮游植物在超寡营养水中的生存。在亚北极地区，这一比例与任何环境参数都没有表现出明显的关系。相反，混合营养型纳米鞭毛虫在总吞噬型纳米鞭毛虫（混合营养型和异养型纳米鞭毛虫的总和）中的数量比例与营养物浓度呈正相关。与大量营养素的可用性相反，水柱的物理稳定性似乎并不影响混合营养纳米鞭毛虫的贡献。
To elucidate the ecological importance of mixotrophic nanoflagellates in the open ocean and the environmental factors that regulate their abundance, we surveyed latitudinal distributions of autotrophic, mixotrophic and heterotrophic nanoflagellates in the central North Pacific Ocean along a transect at 170°W. Mixotrophic nanoflagellates significantly contributed (26–64 %) to total bacterivory, as measured by the fluorescently-labeled bacteria method, from the equatorial through the subarctic regions, which reinforces the importance of mixotrophic nanoflagellates as a trophic link in the open ocean. The proportion of mixotrophic to total plastidic nanoflagellates was significantly higher in the nutrient-depleted subtropical gyre than in other regions, sometimes exceeding 10 %. Additionally, the proportion was negatively correlated with soluble reactive phosphorus concentration within the tropical and subtropical waters, suggesting that low nutrient availability could facilitate phagotrophy of plastidic nanoflagellates, which may explain the survival of nano-sized eukaryotic phytoplankton in the ultraoligotrophic water. In the subarctic regions, the proportion exhibited no obvious relationship with any environmental parameter. Conversely, the numerical proportion of mixotrophic nanoflagellates in total phagotrophic nanoflagellates (sum of mixotrophic and heterotrophic nanoflagellates) was positively correlated with nutrient concentrations. In contrast to macronutrient availability, the physical stability of the water column did not appear to affect the contribution of mixotrophic nanoflagellates.
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通过 HPlC 色素分析和流式细胞术估计西北亚北极太平洋浮游植物和异养细菌对原位铁施肥的反应
DOI：
--
发表时间：
2005
期刊：
Progress in Oceanography 64
影响因子：
--
作者：
Suzuki;K.
通讯作者：
K.
影响因子：
2.1
作者：
Flynn, Kevin J.;Stoecker, Diane K.;Burkholder, Joann M.
通讯作者：
Burkholder, Joann M.
DOI：
10.1086/660284
发表时间：
2011-06
期刊：
The American Naturalist
影响因子：
--
作者：
B. Ward;S. Dutkiewicz;A. D. Barton;M. Follows
通讯作者：
B. Ward;S. Dutkiewicz;A. D. Barton;M. Follows
影响因子：
4.5
作者：
NYGAARD, K;TOBIESEN, A
通讯作者：
TOBIESEN, A
在磷酸盐耗尽的挪威峡湾和围栏中，有色和无色纳米级原生生物作为纳米浮游生物的食草者的重要性
DOI：
--
发表时间：
1997
期刊：
影响因子：
--
作者：
H. Havskum;Hansen As
通讯作者：
Hansen As