Large BioBlitz bushfire in New South Wales reveals species are bouncing back better than other regions


Harnessing the power of citizen scientists, a UNSW project researching biodiversity in areas damaged during the Black Summer bushfires has found positive signs of life resuming.

Three recent ‘BioBlitz’ events held at different locations around New South Wales have recorded the recovery of flora, fauna and fungi after the bushfires, and revealed that the central north coast is doing particularly well good.

BioBlitz is a research tool dating back to the mid-1990s, in which citizen scientists set out to document as many different species as possible over a defined time period and geographical location.

The latest BioBlitz through Laurieton, North Haven and Diamond Head, near Port Macquarie saw 2,200 individual sightings submitted to the research database, with 823 species recorded, including nine threatened species.

The Big Bushfire Bioblitz team joined by ABC’s Costa Georgiadis (right) in Laurieton, NSW.(Provided by: Thomas Mesaglio)

Thomas Mesaglio, iNaturalist curator and doctoral student at the UNSW Center for Evolutionary and Ecology Research, said the Laurieton BioBlitz saw “by far the highest number of species observed out of the three BioBlitzes held.”

Close up of a yellow spider with very long legs and a body with bright yellow, orange and black
A black-spotted Thwaitesia spider, also known as the sequin spider.(Provided: Pete Crowcroft)

“The third blitz was originally scheduled to be held at Washpool National Park, northwest of Grafton, but just before it was supposed to take place, catastrophic flooding hit the area, so the team scrambled to rearrange the event,” he said.

The Laurieton area was chosen because it had a “very nice mosaic of burned and unburned areas next to each other” and despite fewer people involved than the previous two events, a significantly higher number of species have been found.

“We couldn’t have picked a better spot,” Mr. Mesaglio said.

“It was an absolutely fantastic location for the BioBlitz with the incredible range of species we saw.

Feathertail glider
The feather-tailed glider is an endangered species.(Provided: Nick Lambert)

Nine endangered species have been found in the central north coast region alone, including wallum rocket frogs and wallum frogs, great gliders, square-tailed kites and rare plants such as Northern acacia Brother (Acacia courtii) and flowering shrub (Personia katerae).

Large brown and white bird of prey in mid flight
A square-tailed kite native to the east coast of Australia.(Provided by: Thomas Mesaglio)

Previous events took place in March in Murramarang National Park on the NSW south coast and in February in the Blue Mountains, but as these areas suffered more intense and widespread damage, fewer species seemed to rebound.

Each of the events took place over three days, with techniques employed such as spotlighting, insect trapping, sound recordings and the study of plants, mammals and reptiles.

A small brown snake with a bright blue eye lying on a rock
A yellow-faced whipsnake, common throughout most of Australia.(Provided: Pete Crowcroft)

Citizen scientists are crucial for bushfire research

Painted Finger Orchid (Caladenia picta)
A Painted Finger Orchid endemic to NSW, which blooms in autumn.(Provided by: Thomas Mesaglio)

Bioblitzes prove to be a very useful tool for scientists to research the prevalence of different species over a large area.

Mr Mesaglio said citizen scientists have become an invaluable asset to bushfire recovery research in terms of discovering which species are returning.

“When fires hit, it’s really difficult for scientists to be able to get out and visit all the areas that have burned in a relatively short period of time,” he said.

“By mobilizing citizen scientists and engaging the community in these types of events, we can cover many places in a shorter amount of time.”

Close up of a large black and white striped lizard
A lace monitor or tree goanna, one of the largest lizards in the world.(Provided: Jack Morgan)

Bringing the citizen scientists together with experts and researchers also allowed them to pass on knowledge to community participants.

Close up of a snail with a black and brown shell
A live Macleay Valley woodland snail, which is on the government’s tentative list of ‘priority invertebrate species requiring urgent management intervention’.(Provided: Nick Lambert)

Mr Mesaglio said it was particularly fascinating to examine the impact of recent heavy rains on wildlife.

“We found that the influence of rain and water was really crucial in reclaiming some of these areas, for example in Diamond Head you have fantastic paperbark swamps, and there was a incredible diversity there,” he said.

“It appears that these swamps played a very important role during the fires, acting as a small refuge for species that might have been trapped in the fires, to escape.”

Brown moth-like butterfly with black dots on the tips of its wings standing on the tip of a leaf
The common ringlet, a species of butterfly from the east coast of Australia.(Provided: Pete Crowcroft)

Several Australian universities have combined efforts to research bushfire behavior and its impact on the natural environment, and as a result recent BioBlitz events have built on shared knowledge.

“We have everyone who came to the BioBlitzes uploading their photos and all of our experts feverishly identifying things for everyone and presenting the final counts, and then we’ll write up a report with all of our findings.”

Thomas Mesaglio UNSW
PhD researcher Thomas Mesaglio says BioBlitzes bring scientists and the community together.(Provided by: Thomas Mesaglio)

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