Ocean acidification has a strong effect on communities living on plastic in mesocosms

Author:

Zhang Xu12,Zhang Ping12,Deng Zichao1,Huang Ruiping1,Zhang Di3,Tian Yang1,Wang Na1,Li He1,Wang Xuyang1,Jiang Xiaowen1,Sun Jiazhen1,Fu Qianqian1,Yi Xiangqi1ORCID,Qu Liming1,Zhou Cong1,Rao Yuming1,Zeng Xiaorong1,Hall‐Spencer Jason M.45,Gao Guang1ORCID,Gao Kunshan1ORCID,Lin Xin12ORCID

Affiliation:

1. State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences Xiamen University Xiamen China

2. Xiamen City Key Laboratory of Urban Sea Ecological Conservation and Restoration Xiamen China

3. School of Ocean Yantai University Yantai China

4. Marine Biology and Ecology Research Centre University of Plymouth Plymouth UK

5. Shimoda Marine Research Center University of Tsukuba Shizuoka Japan

Abstract

AbstractWe conducted a mesocosm experiment to examine how ocean acidification (OA) affects communities of prokaryotes and eukaryotes growing on single‐use drinking bottles in subtropical eutrophic waters of the East China Sea. Based on 16S rDNA gene sequencing, simulated high CO2 significantly altered the prokaryotic community, with the relative abundance of the phylum Planctomycetota increasing by 49%. Under high CO2, prokaryotes in the plastisphere had enhanced nitrogen dissimilation and ureolysis, raising the possibility that OA may modify nutrient cycling in subtropical eutrophic waters. The relative abundance of pathogenic and animal parasite bacteria also increased under simulated high CO2. Our results show that elevated CO2 levels significantly affected several animal taxa based on 18S rDNA gene sequencing. For example, Mayorella amoebae were highly resistant, whereas Labyrinthula were sensitive to OA. Thus, OA may alter plastisphere food chains in subtropical eutrophic waters.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

Aquatic Science,Oceanography

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