Zooplankton community size-structure change and mesh size selection under the thermal stress caused by a power plant in a semi-enclosed bay

Qianwen Shao; Yifeng Zhu; Meixia Dai; Xia Lin; Chengxu Zhou; Xiaojun Yan

doi:10.1007/s13131-020-1634-9

Volume 39 Issue 8

Aug. 2020

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Qianwen Shao, Yifeng Zhu, Meixia Dai, Xia Lin, Chengxu Zhou, Xiaojun Yan. 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. doi: 10.1007/s13131-020-1634-9

Citation:

Qianwen Shao, Yifeng Zhu, Meixia Dai, Xia Lin, Chengxu Zhou, Xiaojun Yan. 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. doi: 10.1007/s13131-020-1634-9

Citation:

Qianwen Shao, Yifeng Zhu, Meixia Dai, Xia Lin, Chengxu Zhou, Xiaojun Yan. 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. doi: 10.1007/s13131-020-1634-9

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Zooplankton community size-structure change and mesh size selection under the thermal stress caused by a power plant in a semi-enclosed bay

doi: 10.1007/s13131-020-1634-9

Qianwen Shao^{1, 2},
Yifeng Zhu^{1
,
,},
Meixia Dai¹,
Xia Lin¹,
Chengxu Zhou¹,
Xiaojun Yan^{1
,
,}

1.
Key Laboratory of Applied Marine Biotechnology, School of Marine Science, Ningbo University, Ningbo 315832, China
2.
Ningbo Institute of Oceanography, Ningbo 315832, China

Funds: The National Key Research and Development Program of China under contract No. 2018YFD0900702; the K.C. Wong Magna Fund in Ningbo University (SS).

More Information

Corresponding author: E-mail: zhuyifeng@nbu.edu.cn; yanxiaojun@nbu.edu.cn
Received Date: 2019-12-20
Accepted Date: 2020-04-17

Available Online: 2020-12-28

Publish Date: 2020-08-25

Abstract

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.
- zooplankton,
- coastal power plant,
- temperature elevation,
- size class,
- community structure,
- mesh size selection

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References(43)

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