THE Mary River's vulnerable turtle species has been dealt a blow, with nests being destroyed by humans and livestock, according to the Save the Mary River Co-ordinating Group.
Group representative Glenda Pickersgill said some nests belonging to the Mary River turtle had been lost, claiming nests had been dug up or driven over.
The turtle is in the middle of its laying season, which typically lasts from October to December.
Ms Pickersgill said it was important that nests were not disturbed because, unless a strong number of young turtles came through to replace old turtles, the turtles could become more endangered.
"There are a few months there where they're really vulnerable," she said.
With the eggs under the surface of sandbanks by only 15 to 16cm, walking or driving over the nests can damage the clutch of eggs underneath, Ms Pickersgill said.