| 滨海电厂增温对浮游动物群落粒径结构及采样网目选择的影响 |
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| 引用本文： | 邵倩文,朱艺峰,戴美霞,林霞,周成旭,严小军.滨海电厂增温对浮游动物群落粒径结构及采样网目选择的影响[J].海洋学报(英文版),2020,39(8):62-70. |
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| 作者姓名： | 邵倩文 朱艺峰 戴美霞 林霞 周成旭 严小军 |
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| 作者单位： | 宁波大学海洋学院, 应用海洋生物技术教育部重点实验室, 浙江宁波 315832;宁波海洋研究院, 浙江宁波 315832 |
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| 基金项目： | The National Key Research and Development Program of China under contract No. 2018YFD0900702; the K.C. Wong Magna Fund in Ningbo University (SS). |
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| 摘 要： | Zooplankton samples were collected using 505, 160 and 77 μm mesh nets around a power plant during four seasons in 2011. We measured total length of zooplankton and divided zooplankton into seven size classes in order to explore how zooplankton community size-structure might be altered by thermal discharge from power plant. The total length of zooplankton varied from 93.7 to 40 074.7 μm. The spatial distribution of mesozooplankton(200-2 000 μm) populations were rarely affected by thermal discharge, while macro-(2 000-10 000 μm)and megalo-zooplankton(10 000 μm) had an obvious tendency to migrate away from the outfall of power plant.Thus, zooplankton community tended to become smaller and biodiversity reduced close to power plant.Moreover, we compared the zooplankton communities in three different mesh size nets. Species richness,abundance, evenness index and Shannon-Wiener diversity index of the 505 μm mesh size were significantly lower than those recorded from the 160 and 77 μm mesh size. Average zooplankton abundance was highest in the 77 μm mesh net((27 690.0±1 633.7) ind./m~3), followed by 160 μm mesh net((9 531.1±1 079.5) ind./m~3), and lowest in 505 μm mesh net((494.4±104.7) ind./m~3). The ANOSIM and SIMPER tests confirmed that these differences were mainly due to small zooplankton and early developmental stages of zooplankton. It is the first time to use the 77 μm mesh net to sample zooplankton in such an environment. The 77 μm mesh net had the overwhelming abundance of the copepod genus Oithona, as an order of magnitude greater than recorded for 160 μm mesh net and 100% loss through the 505 μm mesh net. These results indicate that the use of a small or even multiple sampling net is necessary to accurately quantify entire zooplankton community around coastal power plant.
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| 关 键 词： | 浮游动物 滨海电厂 升温 粒径分级 群落结构 网目选择 |
| 收稿时间： | 2019/12/20 0:00:00 |
Zooplankton community size-structure change and mesh size selection under the thermal stress caused by a power plant in a semi-enclosed bay |
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| Shao Qianwen,Zhu Yifeng,Dai Meixi,Lin Xi,Zhou Chengxu,Yan Xiaojun.Zooplankton community size-structure change and mesh size selection under the thermal stress caused by a power plant in a semi-enclosed bay[J].Acta Oceanologica Sinica,2020,39(8):62-70. |
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| Authors: | Shao Qianwen Zhu Yifeng Dai Meixi Lin Xi Zhou Chengxu Yan Xiaojun |
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| Institution: | 1.Key Laboratory of Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo 315832, China2.Ningbo Institute of Oceanography, Ningbo 315832, China |
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| Abstract: | Zooplankton samples were collected using 505, 160 and 77 μm mesh nets around a power plant during four seasons in 2011. We measured total length of zooplankton and divided zooplankton into seven size classes in order to explore how zooplankton community size-structure might be altered by thermal discharge from power plant. The total length of zooplankton varied from 93.7 to 40 074.7 μm. The spatial distribution of meso-zooplankton (200 ?2 000 μm) populations were rarely affected by thermal discharge, while macro- (2 000 ?10 000 μm) and megalo-zooplankton (>10 000 μm) had an obvious tendency to migrate away from the outfall of power plant. Thus, zooplankton community tended to become smaller and biodiversity reduced close to power plant. Moreover, we compared the zooplankton communities in three different mesh size nets. Species richness, abundance, evenness index and Shannon?Wiener diversity index of the 505 μm mesh size were significantly lower than those recorded from the 160 and 77 μm mesh size. Average zooplankton abundance was highest in the 77 μm mesh net ((27 690.0±1 633.7) ind./m3), followed by 160 μm mesh net ((9 531.1±1 079.5) ind./m3), and lowest in 505 μm mesh net ((494.4±104.7) ind./m3). The ANOSIM and SIMPER tests confirmed that these differences were mainly due to small zooplankton and early developmental stages of zooplankton. It is the first time to use the 77 μm mesh net to sample zooplankton in such an environment. The 77 μm mesh net had the overwhelming abundance of the copepod genus Oithona, as an order of magnitude greater than recorded for 160 μm mesh net and 100% loss through the 505 μm mesh net. These results indicate that the use of a small or even multiple sampling net is necessary to accurately quantify entire zooplankton community around coastal power plant. |
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| Keywords: | zooplankton coastal power plant temperature elevation size class community structure mesh size selection |
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