Shield shrimp
Triops australiensis
Triops = three eyed
australiensis = Australian

 

Living in water - while it lasts

The shield shrimp grows quickly in short lived desert ponds where it hides under plants to keep out of the sun.

It feeds on rotting leaves and other detritus.

When the pond dries out, the shield shrimp dies but its eggs wait for the next rain to fill the pond again.

Eggs in the dust

Only the eggs of a shield shrimp survive dry conditions. The eggs are very tough and can still hatch after being blown around in dry dust for years.

In water they hatch into tiny larvae and these babies grow to be adults in a few weeks.

The shield shrimp

Linda Crombie collecting nardoo at Pandi Pandi on the Diamantina River.
Photo: P Clarke, 1986

Cakes can be made from nardoo. These are the parts of the plant that can be dried, ground and made into flour.
Photo: P Clarke, 1986
Spore capsules, called sporocarps fall into cracks in the drying mud and are protected from scavengers until the next rain.
Photo: P Clarke, 1986
Vegetation

Desert nardoo
Marsilea drummondii

The desert nardoo has tough, woody fruits containing spores that can remain dormant for many years. After rain, the fruits burst, the spores begin to grow, and nardoo spreads rapidly across moist ground or along the edges of flooded claypans and watercourses.

Insulating hairs help minimise water loss by increasing the humidity around the frond. When an area dries out, nardoo dies, leaving its spores to wait for the next rain just like shrimp eggs.

Some Aboriginal people grind the fruits into flour for cooking.