Independent and FREE - 2021 Best Online Publication

Why huge surge in dugong, turtle strandings is coming

Independent and FREE – 2021 Best Online Publication (Qld Country Press)

Why huge surge in dugong, turtle strandings is coming


Expert predicts huge surge in dugong and turtle strandings in coming months

Do you have a news tip? Click here to send to our news team.

Funky café ‘with a purpose’ connects community

A humble café has been transformed into a funky food, coffee and art destination as part of an inspiring community project. A number of local More

Centre of attention: $129m two-tower project for CBD

A new dual towers project has attracted strong interest from prospective buyers as the Maroochydore CBD gathers momentum. Construction has started on Habitat Development Group’s More

Sami: lettuce pray this crisis is addressed soon

The so-called Devil’s lettuce (not kale, that is Satan’s salad) is now cheaper per gram than God’s lettuce. Okay, lettuce go to the big topic More

Rise of the nanny: why parents are opting for in-home help

They cook, they clean and, most importantly, they care for and educate children. It’s no wonder Sunshine Coast parents are turning to nannies for help More

‘Stand Up!’ It’s time for a vital celebration of culture

A range of events will be held around the region to celebrate NAIDOC Week, amid a call for justice, equity and recognition of First Nations More

How residents can help draft fix for housing crunch

Noosa community members have been urged to express their views to help address the housing crisis that has gripped the region. Noosa Council is seeking More

Hundreds of dugongs and thousands of turtles will starve to death in coming months after floodwaters smothered Queensland’s seagrass meadows with sediment.

Col Limpus is so familiar with the pattern of death that follows big floods he can provide a timeline of what’s in store.

“We can guarantee that in the months that follow we’re going to see an elevation in mortality strandings,” says the chief scientist for wildlife and threatened species in Queensland’s environment department.

“It’ll start to be obvious in about April and it will build to a peak that we’ll probably see in about September, October.

“I expect we will jump from tens of dugong a year dying, stranding along the east Queensland coast to hundreds. I’m expecting our stranding of green turtles will jump from hundreds to the low thousands.”

That’s what happened after Queensland’s devastating 2010/11 floods.

It also happened in 1991, when two big floods about a month apart saw the Mary River dump vast amounts of fresh, sediment-laden water into Hervey Bay, killing about 1000 square kilometres of sub-tidal seagrass.

“That had a major impact on the dugong population and on the turtle population. We had the highest ever recorded mortality of dugong associated with that event.”

Those that survived moved out and it took several years for the habitat to recover enough for herds to return.

“The calving rate dropped from 20 per cent of the big dugong with calves, to two per cent. These sorts of things have big impacts.”

Local journalists supporting local people. Help keep independent and fair Sunshine Coast news coming by subscribing to our free daily news feed. All it requires is your name and email. See SUBSCRIBE at the top of this article 

Dr Limpus says dugongs and turtles typically carry a lot of fat and that’s why it takes a while for them to wither.

“You can take away the food supply now — as I expect is happening with these floods — but the strandings won’t start increasing until they use up those fat reserves.

“Then you start to get your old animals or the ones that are under stress — mums with calves that are feeding and so on — start to be impacted weeks, months later.”

Dr Limpus says environmental managers and scientists are in new territory given the shrinking interval between major flooding events that used to have a probability of happening once every 100 years.

“We had it for the first time in decades with south east Queensland rivers in 2010/11. We had two floods, again a month or two apart. Then we had it again in 2013, and in 2017, and again now.

“At this point we don’t understand well enough how we go about restoring the habitat but I think that’s a challenge for us now, with the increased frequency of these sorts of things.”