In October 2018, the City of Melbourne ran a Waterbug BioBlitz as part of the National Waterbug BlitzExternal link. Three citizen science events saw us learn about waterbugs and the importance of these small animals in our waterways and urban ecosystems.

Our first event was a science seminar to discuss the importance of waterbugs, freshwater ecosystems, and waterway health in urban areas, and featured talks from Melbourne Water, the University of Melbourne, and the Waterbug Company.

Our next events, as part of the Melbourne Waterbug Blitz, involved stepping into waterproof waders and gearing up with dip-nets and buckets to collect waterbug samples from six different sites: Carlton Gardens, Domain Parklands (Queen Victoria Gardens), Fitzroy Gardens, Royal Park (Trin Warren Tam-boore wetland and also the Australian Native Garden pond), and Westgate Park.

We then sorted through these samples and identified waterbugs at our exciting Dragonfly Festival, which was full of celebrations and family fun. We found an impressive 21 taxa groups of waterbugs on the day, including 7 different groups in a water fountain! The Westgate Park and Royal Park sites gave us the highest number of waterbugs and had the highest habitat rating with plenty of vegetation next to and throughout the wetlands.

The findings from this citizen science project will help inform future management of our urban wetlands.

What are waterbugs?

Waterbugs (Freshwater or aquatic macroinvertebrates) are small animals that live in freshwater for all, or part of, their life cycle. These are predominantly juvenile stages of insects like dragonflies, damselflies, mayflies, caddisflies, water beetles and more. Because they move between aquatic and terrestrial habitats, they play key roles in both aquatic and land-based food webs, as well as in the transfer of nutrients between the two ecosystems.

Timeline

  • Timeline item 1 - complete

    Melbourne Waterbug Blitz event registrations

    4 October to 20 October 2018

  • Timeline item 2 - complete

    Melbourne Waterbug Blitz: Science Seminar

    Wednesday 10 October 2018

  • Timeline item 3 - complete

    Waterbug Collection and Dragonfly Festival events

    Saturday 20 October 2018

  • Timeline item 4 - complete

    Collating and analysing the data

    Late October to December 2018