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Fungi Food Fuels Marsupial Return to Shark Bay
22 Jul
Summary
- Fungal food resources are vital for reintroducing threatened marsupials.
- Bettongs' digging disperses vital fungal spores for ecosystem health.
- DNA technology identified 75 fungal species on Dirk Hartog Island.
Threatened marsupials are returning to Western Australia's Shark Bay World Heritage area, bolstered by research confirming the importance of fungal food sources. A recent study identified that boodies and woylies, both species of bettong, rely on specific fungi found on Dirk Hartog Island. Their presence is critical for ecosystem restoration.
These bettongs play a dual role: they consume fungi and, through their digging, disperse fungal spores. This activity helps maintain the health of plants and the wider ecosystem. Scientists used DNA analysis of both marsupial feces and soil samples to confirm the presence of approximately 75 fungal species on the island. Significantly, about half of the fungi essential for these bettongs' diets were found to be abundant on Dirk Hartog Island.
Dirk Hartog Island has undergone significant ecological recovery after extensive pastoral activity and the eradication of feral cats, which had led to the disappearance of native species. The reintroduction of boodies and woylies, supported by the confirmed availability of their fungal diet, aims to restore ecological functions that have been missing for decades.
