Eyre and York mallee


A small ecoregion in the Mediterranean climate of coastal South Australia. The area is comprised of the Eyre York Block; two peninsulas jutting south into the Southern Ocean.

Eyre and York mallee


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60,195 km²

UNESCO World Heritage Sites​



Background – CC Attribution Share Alike 4.0 International – PotMart186, 2022 / Map – CC Attribution Share Alike 3.0 Unported – Hesperian, 2007

Help your Ecoregion
So what can you do to help your ecoregion? Below is a list to help you support your ecoregion, while also achieving life's everyday tasks. Don’t underestimate your power in doing good for nature!


Food and Homeware: Coffin Bay Pacific Oysters
Food and Homeware: EcoCaddy


Holidays: Eco Eyre

At Home
Below is a list of actions you can easily take at home to minimise your impact on the ecoregion in which you live, and the rest of the planet too!
In your Garden
Below is a list of native plants and habitat creation tips you can use in your garden or on your property to give your ecoregion and its species a boost!


Plant trees that are characteristic of this ecoregion like the dominant Mallee Box (Eucalyptus porosa), Sugar Gum (Eucalyptus cladocalyx) and Eyre Peninsula Blue Gum (Eucalyptus petiolaris) if you have space. To create habitat, consider installation of nestboxes for native birds and creating hollows in old, dead tree limbs.


Plant native sub-canopy trees that are small and have interesting growth-forms like Drooping She-oak (Allocasuarina verticillata), Southern Cypress-pine (Callitris gracilis), Native Pine (Callitris preissii) and Dryland Tea-tree (Melaleuca lanceolata). To create habitat, consider installation of nestboxes for native birds and creating tree hollows in old, dead tree limbs.


Plant native shrubs like Sticky Hop-bush (Dodonaea viscosa), Round-leaved Wattle (Acacia acinacea), Coast Daisy Bush (Olearia axillaris), Small-leaved Blue-bush (Maireana brevifolia), Silver Banksia (Banksia marginata) and Lavender Grevillea (Grevillea lavandulacea). These species are great for creating dense shrubby refugia and provide plenty of nectar for birds and mammals. To create habitat, consider installing insect hotels, compost-heaps and bird-baths in this layer.


Plant an array of thick ground-covers like Cushion Fanflower (Scaevola crassifolia), Native Pigface (Carpobrotus rossii), Austral Trefoil (Lotus australis), Coast Bonefruit (Threlkeldia diffusa), Native Pelargonium (Pelargonium australe), Native Fuschia (Correa reflexa), Cushion Bush (Leucophyta brownii) and the lovely Running Postman (Kennedia prostrata). To create habitat, consider installing a pond or bog-garden with native aquatic and riparian plants, log-piles for sheltering amphibians and reptiles and leave areas of leaf-litter for important insects.


This ecoregion covers the entirety of the Eyre and York peninsulas in South Australia and extends westwards towards the boundary of the Nullarbor Plain near Fowlers Bay. The area is characterised by scattered remnants of open woodland and low mallee often heavily disconnected by agricultural land. The vegetation intersects a rugged coastline along its southern perimeter which is famous for stunning beaches and cliffs. The ecoregion has undergone extensive impacts from farming and land-use change, but a network of protected areas conserves remaining species. The flora is of high conservation significance with around 50% being disjunct populations or endemic species. Fauna is varied but often lacks larger mammals such as the Greater Bilby which have become extinct in the area.

Ecoregion Structure
The structure of the ecoregion is defined as the key living and non-living features characterising its ecosystems, and the differences between how these ecosystems are arranged. For example, layers of vegetation, geology, habitat features and landscapes.


A large area of rolling hills and downs composed of metamorphic rocks like gneiss and meta-sediments left after a retreating sea-line



Iconic Landscapes

Native plant communities

Scenes by @blueringmedia
Ecoregion Composition
The composition of the ecoregion is defined as the biodiversity that inhabits its ecosystems, and the differences between this biodiversity. For example, communities, populations, species, subspecies and genetic traits.
Keystone Species​
Keystone species are those that have a disproportionately large effect on the ecosystems in which they live, relative to their natural abundance there. In other words, species with a really important role in the health of ecosystems.

Common Wallaby-grass
(Rytidosperma caespitosum)

Southern Brown Bandicoot
(Isoodon obesulus)

Flagship Species
Flagship species are those that are chosen by people to represent a wider conservation message, usually for a given place or social context, and as such often carry conservation messages for wider biodiversity.
Recently Extinct Species
All around the world, biodiversity is declining at a concerning rate. For some species it's already too late, and they have disappeared from the ecoregions they once called home. These are some examples of those lost species.

Broad-faced Potoroo
(Potorous platyops)

Lord Howe Fantail
(Rhipidura cervina)

Lord Howe Thrush
(Turdus vinitinctus)

Ecoregion Function
The function of the ecoregion is defined as how its structural and compositional components all work together to form ecological relationships and processes which change over time through geological shifts and evolution by natural selection.

Keystone Relationships

Common Wallaby-grass is a very widespread species in Australia and an important source of fodder for native mammals like wombats and kangaroos. Their dense tufts also create refuge for small mammals like dunnarts and small ground-dwelling birds.

Life-support Systems​

Biodiversity is fundamental to a healthy planet and thriving communities, but the world's species are under tremendous threat.