Spatial difference in phoD-harboring bacterial landscape between soils and sediments along the Yangtze River

Yuyi Yang, Geoffrey Michael Gadd, Ji-Dong Gu, Weihong Zhang, Quanfa Zhang, Wenzhi Liu, Wenjie Wan (Lead / Corresponding author)

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    Abstract

    Deciphering biogeographical patterns of alkaline phosphatase (phoD)-harboring bacteria is essential to understand organic phosphorus mineralization. However, it is poorly understood about distribution pattern and diversity maintenance mechanisms of phoD-harboring bacteria (PHB) in watershed ecosystems. Here, we estimated ecological processes shaping landscape of PHB in soils and sediments along the Yangtze River. The PHB community similarity decayed against higher geographical distance at taxonomic and phylogenetic levels, and larger compositional variation in PHB community were found in sediments only. The PHB displayed higher α-diversities, broader environmental breadths, higher community stability, and stronger species replacement in soils. Conversely, PHB showed stronger phylogenetic signals in sediments. Stochastic and differentiating processes dominated community assemblies of PHB in both soils and sediments. Electrical conductivity displayed decisive roles in shaping PHB diversity for soils and sediments at taxonomic and phylogenetic levels. Our results emphasized differences in distribution patterns of PHB between soils and sediments, and highlighted ecological processes shaping landscapes of PHB in soils and sediments along the Yangtze River. The phosphorus cycling-related findings might be helpful to estimate ecological potential of a watershed ecosystem and could provide new insights for ecological protection policy for the Yangtze River.

    Original languageEnglish
    Article number110447
    Number of pages10
    JournalEcological Indicators
    Volume153
    Early online date6 Jun 2023
    DOIs
    Publication statusPublished - Sept 2023

    Keywords

    • Biogeographic distribution
    • Coexistence pattern
    • Environmental breadth
    • Organic phosphorus mineralization
    • Phylogenetic signal
    • Stochastic processes

    ASJC Scopus subject areas

    • General Decision Sciences
    • Ecology, Evolution, Behavior and Systematics
    • Ecology

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