title: Evidence of bacterioplankton community adaptation in response to long-term mariculture disturbance.
abstract: Understanding the underlying mechanisms that shape the temporal dynamics of a microbial community has important implications for predicting the trajectory of an ecosystem's response to anthropogenic disturbances. Here, we evaluated the seasonal dynamics of bacterioplankton community composition (BCC) following more than three decades of mariculture disturbance in Xiangshan Bay. Clear seasonal succession and site (fish farm and control site) separation of the BCC were observed, which were primarily shaped by temperature, dissolved oxygen and sampling time. However, the sensitive bacterial families consistently changed in relative abundance in response to mariculture disturbance, regardless of the season. Temporal changes in the BCC followed the time-decay for similarity relationship at both sites. Notably, mariculture disturbance significantly (P < 0.001) flattened the temporal turnover but intensified bacterial species-to-species interactions. The decrease in bacterial temporal turnover under long-term mariculture disturbance was coupled with a consistent increase in the percentage of deterministic processes that constrained bacterial assembly based on a null model analysis. The results demonstrate that the BCC is sensitive to mariculture disturbance; however, a bacterioplankton community could adapt to a long-term disturbance via attenuating temporal turnover and intensifying species-species interactions. These findings expand our current understanding of microbial assembly in response to long-term anthropogenic disturbances.
authors.affiliation: School of Marine Sciences, Ningbo University, Ningbo, 315211, China.|Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, 315211, China.
authors.forename: Jinbo
authors.initials: J
authors.lastname: Xiong
authors.affiliation: Faculty of Architectural and Civil Engineering and Environment, Ningbo University, Ningbo, 315211, China.
authors.forename: Heping
authors.initials: H
authors.lastname: Chen
authors.affiliation: School of Marine Sciences, Ningbo University, Ningbo, 315211, China.
authors.forename: Changju
authors.initials: C
authors.lastname: Hu
authors.affiliation: Marine Environmental Monitoring Center of Ningbo, State Oceanic Administration (SOA), Ningbo, 315040, China.
authors.forename: Xiansen
authors.initials: X
authors.lastname: Ye
authors.affiliation: Marine Environmental Monitoring Center of Ningbo, State Oceanic Administration (SOA), Ningbo, 315040, China.
authors.forename: Dingjiang
authors.initials: D
authors.lastname: Kong
authors.affiliation: School of Marine Sciences, Ningbo University, Ningbo, 315211, China.|Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo, 315211, China.
authors.forename: Demin
authors.initials: D
authors.lastname: Zhang
mesh_terms: D000818:Animals; D017756:Aquaculture; D001419:Bacteria / Q000235:genetics / Q000254:growth & development*; D004269:DNA, Bacterial / Q000302:isolation & purification; D017753:Ecosystem; D005399:Fishes; D016014:Linear Models; D025341:Principal Component Analysis; D012336:RNA, Ribosomal, 16S / Q000737:chemistry / Q000378:metabolism; D012621:Seasons; D012623:Seawater / Q000737:chemistry / Q000382:microbiology*; D017423:Sequence Analysis, RNA; D013696:Temperature
chemical_list: D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S