Like ferns and the tides, community conservation groups come and go. Many achieve their goal. Volunteers restore a local wetland or protect a patch of urban bush and then hang up the gardening gloves with a warm inner glow. Some groups peter out while others endure, tackling the ecological problems facing today’s Australia.
One of those problems is fragmentation. Let’s say you have a national park in one spot and another large tract of habitat ten kilometres away. It’s too hard for many wildlife species to make it across open ground to get there. Over time, this means wild areas can effectively become islands.
