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Lake King Mallet

Eucalyptus goniocarpa

Stable

Overview

This mallee eucalypt is a multi-stemmed woody plant in the family Myrtaceae, characterised by the angular, ridged fruit capsules that give the species its epithet. Like other mallee-form eucalypts, it produces several stems from a woody lignotuber at the base, an adaptation that allows regrowth after fire or disturbance. Its flowers provide nectar and pollen for native insects, birds, and other pollinators, while the woody capsules eventually release seed into the surrounding soil.

As a long-lived perennial, it contributes structurally to the plant community it inhabits, offering shelter and habitat continuity in an otherwise open landscape.

The species is restricted to Australia, where it grows in association with inland wetland systems, specifically around the margins of permanent freshwater lakes. This habitat specificity limits its natural distribution to a relatively narrow band of suitable lakeside terrain.

Its endangered status stems from ongoing pressure from agricultural land use. Conversion of land to annual and perennial non-timber cropping has reduced and fragmented available habitat, while livestock farming and ranching contribute through grazing pressure, trampling, and soil disturbance near lake margins where the species grows.

Conservation attention for this species centres on habitat protection measures tied to the wetland systems it depends on, including managing agricultural encroachment and grazing access around known populations. Monitoring of remaining populations helps track the effects of ongoing land-use pressures.

The population is currently assessed as stable, indicating that despite continued threats from cropping and livestock activities, numbers are not presently in decline. However, its restricted habitat and reliance on a specific wetland setting mean it remains vulnerable to any intensification of surrounding land use, and its long-term outlook depends on continued protection of lake-margin habitat from further agricultural conversion.

The main dangers to this plant come from land being cleared and converted for growing crops, as well as land being used for raising livestock like cattle or sheep. Both of these activities destroy or degrade the natural habitat this species depends on to survive. These threats are ongoing and currently show no signs of slowing down.

Threat summary

Habitat

Wetlands (inland) - Permanent freshwater lakes· major

Conservation measures underway

Habitat & natural process restoration

Frequently asked questions

Why is Lake King Mallet classified as Endangered?
Lake King Mallet is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. The main dangers to this plant come from land being cleared and converted for growing crops, as well as land being used for raising livestock like cattle or sheep. Both of these activities destroy or degrade the natural habitat this species depends on to survive. These threats are ongoing and currently show no signs of slowing down.
Where does Lake King Mallet live?
Lake King Mallet occurs in Australia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Lake King Mallet?
The main threats to Lake King Mallet are 2.1, and 2.3. The full IUCN-classified threat record for this species is detailed on the species page.

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