Contrasting microbial assemblages in adjacent water masses associated with the East Australian Current

Justin Seymour, Martina Doblin, Thomas Jeffries, Mark Brown, Kelly Newton, Peter Ralph, M Baird, James Mitchell

    Research output: Contribution to journalArticlepeer-review

    21 Citations (Scopus)

    Abstract

    Different oceanographic provinces host discrete microbial assemblages that are adapted to local physicochemical conditions. We sequenced and compared the metagenomes of two microbial communities inhabiting adjacent water masses in the Tasman Sea, where the recent strengthening of the East Australian Current (EAC) has altered the ecology of coastal environments. Despite the comparable latitude of the samples, significant phylogenetic differences were apparent, including shifts in the relative frequency of matches to Cyanobacteria, Crenarchaeota and Euryarchaeota. Fine-scale variability in the structure of SAR11, Prochlorococcus and Synechococcus populations, with more matches to 'warm-water' ecotypes observed in the EAC, indicates the EAC may drive an intrusion of tropical microbes into temperate regions of the Tasman Sea. Furthermore, significant shifts in the relative importance of 17 metabolic categories indicate that the EAC prokaryotic community has different physiological properties than surrounding waters.

    Original languageEnglish
    Pages (from-to)548-555
    Number of pages8
    JournalEnvironmental Microbiology Reports
    Volume4
    Issue number5
    DOIs
    Publication statusPublished - Oct 2012

    Fingerprint Dive into the research topics of 'Contrasting microbial assemblages in adjacent water masses associated with the East Australian Current'. Together they form a unique fingerprint.

    Cite this