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首页> 外文期刊>Polar biology >Zooplankton electron transport system activity and biomass in the western Ross Sea (Antarctica) during austral summer 2014
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Zooplankton electron transport system activity and biomass in the western Ross Sea (Antarctica) during austral summer 2014

机译：2014夏季夏季，西部罗斯海（南极洲）的浮游动物电子传输系统活动和生物量

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摘要

The present study provides insight into specific zooplankton oxygen and carbon demands (per unit biomass) and community zooplankton respiration and carbon requirements in the Ross Sea (Antarctica). In the literature, there is a lack of data in this area. The role of mesozooplankton in carbon remineralisation in coastal and pelagic environments was evaluated. The zooplankton composition, abundance and biomass were analysed. In the marine carbon cycle, zooplankton from the epipelagic realm has a key role. Estimation of the electron transport system activity represents a specific and highly sensitive method to evaluate the zooplankton carbon requirements from the sinking flux as an indication of the respiratory activity. We focus here on 26 sampling stations in the western sector of the Ross Sea, in which the 0-250-m layer was investigated during the austral summer of 2014. The oxygen consumption from the electron transport system analysis was converted into carbon demand. Differences in carbon requirements were observed, and their relationships to zooplanktonic composition and abundance were investigated, along with their relationships to seawater temperature, food availability, non-living specimens and pteropod faecal pellet abundance. A positive correlation between carbon demand and temperature was highlighted. The change in copepod community composition was relevant in terms of species and relative size ranges. The zooplankton biomass ranged from 41.25 to 171.46 mg m(-3) among the stations, which is in agreement with the late summer trophic condition, with higher values for the more coastal stations. Positive correlation between zooplankton biomass and community metabolism per day was revealed. With its recycling of the particulate organic material that originates in the epipelagic layer, the zooplankton compartment participates in the decrease in the input of material, mainly in the two coastal areas investigated, with respect the more pelagic zone.
机译：本研究提供了对罗斯海（南极洲）特定浮游动物氧气和碳需求（每单位生物量）以及社区浮游动物呼吸和碳需求的见解。在文献中，该领域缺乏数据。评价了中层浮游生物在沿海和中上层环境中碳再矿化中的作用。分析了浮游动物的组成，丰度和生物量。在海洋碳循环中，上层海域的浮游动物具有关键作用。电子传输系统活性的估计代表了一种特定且高度灵敏的方法，可以根据下沉通量来评估浮游动物的碳需求，以此作为呼吸活动的指标。我们在这里重点介绍罗斯海西部地区的26个采样站，其中在2014年夏季进行了0-250米层的调查。电子传输系统分析中的氧气消耗转化为碳需求。观察到了碳需求的差异，并研究了它们与浮游动物组成和丰度的关系，以及它们与海水温度，食物供应，无生命标本和翼足类粪便颗粒丰度的关系。强调了碳需求与温度之间的正相关。 pe足类群落组成的变化与物种和相对大小范围有关。各站之间的浮游生物量范围为41.25至171.46 mg m（-3），这与夏末的营养状况相吻合，沿海站的数值更高。浮游动物的生物量与每天的社区代谢之间呈正相关。浮游生物隔间通过回收起源于上层的颗粒状有机物质，参与了物质输入量的减少，主要是在所调查的两个沿海地区，主要是上层带。

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  • 来源
    《Polar biology》 |2017年第6期|1197-1209|共13页
  • 作者

    Minutoli R.; Brugnano C.; Granata A.; Zagami G.; Guglielmo L.;

  • 作者单位

    Univ Messina, Dept Chem Biol Pharmaceut & Environm Sci, Viale Ferdinando Stagno DAlcontres 31, I-98166 Messina, Italy|Univ Messina, ULR CoNISMa, Dept Chem Biol Pharmaceut & Environm Sci, Viale Ferdinando Stagno dAlcontres 31, I-98166 Messina, Italy;

    Univ Messina, Dept Chem Biol Pharmaceut & Environm Sci, Viale Ferdinando Stagno DAlcontres 31, I-98166 Messina, Italy;

    Univ Messina, Dept Chem Biol Pharmaceut & Environm Sci, Viale Ferdinando Stagno DAlcontres 31, I-98166 Messina, Italy|Univ Messina, ULR CoNISMa, Dept Chem Biol Pharmaceut & Environm Sci, Viale Ferdinando Stagno dAlcontres 31, I-98166 Messina, Italy;

    Univ Messina, Dept Chem Biol Pharmaceut & Environm Sci, Viale Ferdinando Stagno DAlcontres 31, I-98166 Messina, Italy|Univ Messina, ULR CoNISMa, Dept Chem Biol Pharmaceut & Environm Sci, Viale Ferdinando Stagno dAlcontres 31, I-98166 Messina, Italy;

    Univ Messina, ULR CoNISMa, Dept Chem Biol Pharmaceut & Environm Sci, Viale Ferdinando Stagno dAlcontres 31, I-98166 Messina, Italy;

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  • 正文语种 eng
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  • 关键词

    Electron transport system; Respiration; Carbon demand; Biomass; Zooplankton; Ross Sea;

    机译：电子传输系统呼吸碳需求生物量浮游生物罗斯海;

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