Xu Min, Zhao Qi, Wang Shenzhi, Wang Yun, Shen Jiabin, Zhang Yi, Yang Linlin, Xu Kaida, Hou Xiaolong, Zhang Yunling, Zhang Haipeng, Otaki Takayoshi, Komatsu Teruhisa, Xu Yufu
Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural Affairs, Shanghai, China.
East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China.
PLoS One. 2024 Aug 8;19(8):e0308337. doi: 10.1371/journal.pone.0308337. eCollection 2024.
Majority of macrozooplankton have a wider dietary niche breadth and utilize small invertebrates, microzooplankton and mesozooplankton, so effect on primary production might be through trophic cascading effect. To better understand the ecosystem structure of benthic oyster-macroalgae reefs, we analyzed zooplankton community structure before (July 2016) and after (from September 2016 to October 2017) the construction of benthic reefs in the 2 km2 sea ranch area in Xiangyun Cove, Tangshan, China. We identified 57 zooplankton species, including the 12 cnidarian (e.g., Clytia hemisphaerica Linnaeus and Eirene ceylonensis Browne), 1 ctenopharyngodon (Pleurobrachia globosa Moser), 24 crustacean (e.g., Calanus sinicus Brodsky, Paracalanus parvus Claus, Labibocera euchaeta Glesbrecht, Labibocera bipinnata Tanaka, Calanopia thompsoni Scott, and Centropages dorsispinatus Thompson), 1 chaetognath (Sagitta crassa Tokioka), 1 urochordate species (Oikopleura dioica Fol), and 18 species of planktonic polychaete and gastropod larvae. The zooplankton density and biomass values before reef construction were 266.14 ind/m3 and 2.72 mg/m3, respectively, and those after reef construction were 138.06 ind/m3 and 32.91 mg/m3, respectively. The biomass trend was as follow: October 2017 (89.08 mg/m3) > August 2017 (70.97) > September 2016 (3.17) > July 2016 (2.72) > June 2017 (0.86) > May 2017 (0.44). The common dominant organisms were crustaceans and chaetognaths. According to the RDA ranking results, water temperature was positively correlated with the Shannon-Wiener diversity index and Margalef's richness indexes. With the increasement of Margalef's richness index, the value of dissolved oxygen content showed a significant negative correlation with zooplankton abundance. The results of this study are applicable to sustainable development and management strategies of coastal reef ecosystems and provide a basis for further surveys of secondary productivity in the sea ranch area.
大多数大型浮游动物具有更广泛的食物生态位宽度，以小型无脊椎动物、微型浮游动物和中型浮游动物为食，因此对初级生产的影响可能是通过营养级联效应实现的。为了更好地了解底栖牡蛎-大型海藻礁的生态系统结构，我们分析了中国唐山祥云湾2平方公里海域牧场区域底栖礁建造前（2016年7月）和建造后（2016年9月至2017年10月）的浮游动物群落结构。我们鉴定出57种浮游动物，包括12种刺胞动物（如半球美螅水母和锡兰艾氏水母）、1种栉水母（球型侧腕水母）、24种甲壳动物（如中华哲水蚤、小拟哲水蚤、真刺唇角水蚤、双羽唇角水蚤、汤氏长足水蚤和背针胸刺水蚤）、1种毛颚动物（肥胖箭虫）、1种尾索动物（住囊虫）以及18种浮游多毛类和腹足类幼虫。礁体建造前浮游动物密度和生物量值分别为266.14个/立方米和2.72毫克/立方米，建造后分别为138.06个/立方米和32.91毫克/立方米。生物量趋势如下：2017年10月（89.08毫克/立方米）＞2017年8月（�0.97）＞2016年9月（3.17）＞2016年7月（2.72）＞2017年6月（0.86）＞2017年5月（0.44）。常见的优势生物是甲壳动物和毛颚动物。根据冗余分析（RDA）排序结果，水温与香农-威纳多样性指数和马加莱夫丰富度指数呈正相关。随着马加莱夫丰富度指数的增加，溶解氧含量值与浮游动物丰度呈显著负相关。本研究结果适用于沿海礁生态系统的可持续发展和管理策略，并为进一步调查海域牧场区域的次级生产力提供了依据。
