基于ZooScan图像分析“海马”冷泉区浮游动物垂直分布特征

doi:10.11978/2022057

热带海洋学报 ›› 2023, Vol. 42 ›› Issue (2): 87-96.doi: 10.11978/2022057CSTR: 32234.14.2022057

基于ZooScan图像分析“海马”冷泉区浮游动物垂直分布特征

李若飞¹^,²(), 柯志新¹^,²^,³(), 李开枝¹^,²^,³, 刘甲星¹^,²^,³, 谭烨辉¹^,²^,³

1.中国科学院热带海洋生物资源与生态重点实验室, 中国科学院南海海洋研究所, 广东广州 510301
2.中国科学院大学, 北京 100049
3.南方海洋科学与工程广东省实验室(广州), 广东广州 511458

收稿日期:2022-03-24 修回日期:2022-05-01 出版日期:2023-03-10 发布日期:2022-05-05
通讯作者: 柯志新。email: kzx@scsio.ac.cn
作者简介:
李若飞(1998—), 男, 研究方向为海洋浮游生态学。email: liruofei.ecology@foxmail.com
基金资助:
南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0401); 国家自然科学基金项目(32171548); 国家自然科学基金项目(31971432); 国家自然科学基金项目(41976112); 国家科技基础资源调查专项(2017FY201404)

Vertical distribution of zooplankton in the “Haima” cold seep region based on ZooScan image analysis

LI Ruofei¹^,²(), KE Zhixin¹^,²^,³(), LI Kaizhi¹^,²^,³, LIU Jiaxin¹^,²^,³, TAN Yehui¹^,²^,³

1. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

Received:2022-03-24 Revised:2022-05-01 Online:2023-03-10 Published:2022-05-05
Contact: KE Zhixin. email: kzx@scsio.ac.cn
Supported by:
Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0401); National Natural Science Foundation of China(32171548); National Natural Science Foundation of China(31971432); National Natural Science Foundation of China(41976112); Science and Technology Basic Resources Investigation Program of China(2017FY201404)

摘要/Abstract

摘要：

为了解“海马”冷泉区浮游动物的垂直分布以及冷泉活动可能对上方浮游动物群落产生的影响, 2020年9月在“海马”冷泉区的5个调查站位使用浮游生物分层拖网对1250m以浅的浮游动物垂直分布进行了调查。使用浮游动物图像扫描系统(ZooScan)对不同水层的浮游动物样品进行了分析, 获取了浮游动物的丰度、生物量和粒径谱的垂直分布特征。结果显示: 浮游动物丰度和生物量主要集中在0 ~ 100m水层, 低于100m后, 浮游动物的丰度和生物量随着水深增加均快速下降, 在1000 ~ 1250m水层平均分别仅为8.33个·m^-3和12.10mm³·m^-3。总体看来, 桡足类是各水层浮游动物的优势类群, 胶质类浮游动物在深层中的占比上升。“海马”冷泉区不同站位和水层标准化生物量谱斜率的变动范围为-0.94 ~ -0.57, 截距的变化范围为-2.10 ~ 5.94。从表层到底层, 浮游动物标准化生物量谱基本呈现斜率逐渐增大而截距逐渐减小的趋势。这反映了浮游生态系统的生产力水平从表到底逐渐下降, 但浮游食物网的能量传递效率逐渐增加。甲烷气体渗漏强度最大的ROV1站位在1000 ~ 1250m水层表现出异常的粒径谱特征, 生物量谱的斜率a显著低于同水层其他站位, 同时在600 ~ 800m水层出现浮游动物丰度的相对高值, 推测该站位的浮游动物群落结构可能受到冷泉区甲烷渗漏的影响。

关键词: 浮游动物, 标准化生物量谱, 冷泉, 图像识别, 深海

Abstract:

To understand the vertical distributions of zooplankton in regions of the “Haima” cold seep and the possible effects of seep activities, zooplankton samples were collected from 0 to 1250 m at five stations in September 2020. These zooplankton samples were analyzed using ZooScan image analysis system. The abundance, biovolume and size spectra of zooplankton in different water layers were obtained in this study. The results showed that zooplankton abundance and biovolume were mainly occurred in the 0 ~ 100 m water layer. Below 100 m, zooplankton abundance and biovolume decreased rapidly with increased depth. The average abundance and biovolume of zooplankton were only 8.33 ind·m^-3 and 12.10 mm³·m^-3 at the layer of 1000 ~ 1250 m. In general, copepods were the dominant zooplankton in each water layer, and the proportion of gelatinous zooplankton increased in deep layer. The slope of normalized biovolume size spectra (NBSS) in the regions of the “Haima” cold seep ranged from -0.94 to -0.57, and the intercept ranged from -2.10 to 5.94. From surface to bottom, the slope of NBSS increased while the intercept decreased gradually. This indicated that the productivity of planktonic ecosystem declined gradually from surface to bottom, but the energy transfer efficiency of pelagic food web increased gradually. The layer of 1000 ~ 1250 m at ROV1 station showed abnormal size spectrum characteristics, and the slope “a” is significantly lower than that of other stations in the same water layer. It suggested that the zooplankton community might be affected by cold seep activities.

Key words: zooplankton, normalized biovolume size spectra, cold seep, image identification, deep sea

李若飞, 柯志新, 李开枝, 刘甲星, 谭烨辉. 基于ZooScan图像分析“海马”冷泉区浮游动物垂直分布特征[J]. 热带海洋学报, 2023, 42(2): 87-96.

LI Ruofei, KE Zhixin, LI Kaizhi, LIU Jiaxin, TAN Yehui. Vertical distribution of zooplankton in the “Haima” cold seep region based on ZooScan image analysis[J]. Journal of Tropical Oceanography, 2023, 42(2): 87-96.

图/表 8

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基于ZooScan图像分析“海马”冷泉区浮游动物垂直分布特征

Vertical distribution of zooplankton in the “Haima” cold seep region based on ZooScan image analysis

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