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Insights
PlatyCentral’s contribution to understanding platypus distribution in Australia
A national-scale contribution, built by citizen scientists
In just five years, PlatyCentral has become one of the most important sources of platypus data in the country — reshaping what we know about where platypuses are, and where they still are today. Every figure on this page is drawn directly from the Atlas of Living Australia, the national biodiversity database.
PlatyCentral against every other data source
Platypus records in the Atlas of Living Australia come from more than 40 data providers accumulated over a century. PlatyCentral (highlighted) is already among the top contributors — and the only one built from scratch on public participation.
What PlatyCentral delivered
- — verified platypus observations across six states and territories
- A — share of the national platypus record in just five years
- Confirmed platypuses are still present in — areas (25 km grid squares) across their range
- Gave the first up-to-date record in about 100 areas — including places with no confirmed platypus for 15+ years
- A repeatable spring survey model (the annual spring survey) that mobilises thousands of observers
How to read this report
The tabs above move from impact to action. Temporal contribution shows how PlatyCentral transformed the rate of platypus recording over time. Spatial contribution maps where PlatyCentral observations filled gaps and refreshed stale records. Priority gaps & next steps identifies the squares where data is now oldest or thinnest — a ready-made target list for the coming survey season.
Temporal contribution — a step-change in the rate of discovery
For decades, Australia logged a few hundred platypus observations a year. PlatyCentral changed that almost overnight, driving the national annual count to record highs and concentrating effort into an annual spring survey pulse.
Annual platypus observations nationally — PlatyCentral vs all other sources
Since 2021 the blue bars (PlatyCentral) make up a third of all platypus records logged in Australia. The pre-2021 baseline shows how thin national recording was before PlatyCentral.
Cumulative PlatyCentral observations
From a standing start to thousands of verified records.
When people look: seasonality
The September peak is the annual spring survey campaign — the single largest monthly concentration of platypus observation effort recorded in Australia.
Spatial contribution — filling gaps and refreshing the map
Each coloured square below is a grid cell PlatyCentral contributed to. The border colour shows how recent the best record was before PlatyCentral; the fill colour shows how recent it is now. Where a square has a warm-coloured border but a green fill, PlatyCentral took an old or missing record and brought it up to date.
Before → After: how the platypus record has changed
Of the squares PlatyCentral touched, how the “best available record” changed.
| Before PlatyCentral | After PlatyCentral | Squares |
|---|
What the maps show
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Priority gaps — where to direct effort in the coming months
The same dataset that proves PlatyCentral’s reach also reveals where the national picture is weakest. These are the squares where the platypus record is now oldest, thinnest, or showing possible local decline — the natural targets for the next survey season.
What the terms mean
- Refreshed — a newer record than previously existed for that square or council.
- Stale — the platypus has not been confirmed for 10+ years (no record since 2015).
- Cold (council level) — three or more historical records, but none in the last decade.
- Possible decline — several historical records, but nothing since 2012 — worth ground-truthing.
- Single-record — presence rests on just one observation and needs confirming.
Priority by state
Stale squares relative to PlatyCentral refresh — states with many stale squares and little recent PlatyCentral coverage are under-served.
| State | Occupied | Stale | Single-record | Refreshed |
|---|
25 km grid. “Refreshed” = squares where PlatyCentral provided a newer record than previously existed.
Recommended focus for the next season
Priority by Local Government Area
Translating the gap analysis into council-level targets, using the current Atlas of Living Australia record. Each Local Government Area (LGA) is the practical unit for partnering with councils, Landcare groups and catchment authorities on the next survey season. LGA boundaries are the ABS/ASGS layer; every record is tagged to its council by ALA. The list covers the platypus’ natural range (eastern states and South Australia).
Priority map — every platypus LGA, shaded by status
Boundaries: ABS/ASGS LGA layer (via ALA), simplified for display.
Highest-priority LGAs — historical records now lacking recent confirmation
Bars show the number of historical platypus records in each LGA; colour shows how stale the record now is. Long red bars are places with a substantial platypus history that has gone quiet.
Priority LGA target list
| LGA | State | Total records | Since 2016 | Since 2022 | PlatyCentral | Status |
|---|
Sorted by priority then by historical record count. “PlatyCentral” = PlatyCentral records in that LGA to date. Status: Cold (no record 10+ yrs) · No current record (nothing since 2022) · Not yet reached (well-recorded, no PlatyCentral records yet) · Active.