The 20th International Symposium on Microbial Ecology brings the world's microbial-ecology community to Auckland's NZICC for a six-day congress of keynotes, 28 scientific sessions and roundtables, 16–21 August 2026.
The 20th International Symposium on Microbial Ecology (ISME20) runs from 16 to 21 August 2026 at the New Zealand International Convention Centre (NZICC) in central Auckland. According to the International Society for Microbial Ecology, the meeting is the twentieth edition of its flagship biennial symposium and gathers the global microbial-ecology community for six days of keynotes, scientific sessions and roundtable discussions.
The organiser describes a programme spanning the full breadth of the field — from environmental microbiomes and host–microbe interactions to new laboratory methods and emerging technologies. ISME has announced 28 scientific sessions for the Auckland edition, sitting alongside keynote addresses and dedicated roundtable sessions.
ISME20 is hosted by the International Society for Microbial Ecology, a learned society headquartered in Wageningen in the Netherlands that has convened the ISME symposium series across two decades. Beyond the symposium, the society publishes The ISME Journal and ISME Communications and runs the awards, grants and early-career-scientist programmes that frame the meeting. Registration opened ahead of the event, with the society noting an early-bird deadline of 1 May 2026 on its site.
The ISME series rotates between global host cities, and the 2026 edition marks the first time the meeting has been held in New Zealand.
The symposium is a research meeting, drawing microbiologists, ecologists, environmental scientists and postgraduate researchers from universities and institutes worldwide. Its 28 announced sessions cover subjects from microbiome science and host–microbe interactions through to methods and emerging technologies, and the format includes keynote lectures and smaller roundtable discussions intended for focused debate.
For an international scientific congress of this kind, the delegate profile is heavily overseas-based, and the multi-day schedule concentrates a large visiting research audience in central Auckland across a single week in August.
The NZICC sits on Hobson Street in the central city, within the SkyCity precinct and walking distance of the waterfront and the CBD's hotel inventory. Auckland Airport lies roughly 20 kilometres to the south, the arrival point for the substantial international contingent an ISME symposium draws. A six-day congress at a central-city convention centre places sustained demand on CBD accommodation and on airport-to-city movement at the start and end of the week — the delegate-movement pattern characteristic of a major inbound scientific meeting.
ISME20 is one of the larger international association congresses on New Zealand's 2026 calendar, and its arrival at the NZICC is a marker of the venue's role in attracting global scientific meetings to Auckland. Multi-day congresses of this scale deliver concentrated visitor nights and position the city within the international rotation of a leading research society — the kind of event that anchors a convention centre's calendar and the wider business-events economy around it.
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