Ash accounts for 20% of the UK’s trees.
www.shutterstock.com/Phil MacD Photography
Over 100 species are dependent on Ash trees for survival – we need to act fast.
The Northern Corroboree frog is among seven species at grave risk from fungal disease.
Chytrid fungus has already wiped out six species of Australian frogs since the disease arrived in the 1970s. Without urgent action, seven more are facing extinction.
Spiny water flea (
Jake R. Walsh
Invasive species cause some $120 billion in damages across North America yearly -- and that's just direct costs. A study of one species in one Wisconsin lake indicates the real toll is much higher.
A native Australian gecko, Gehyra dubia.
If you're hearing a strange chatter in your home, you may have gecko housemates.
Annoying, right? A juvenile Noisy Miner.
Andrew Haynes/Wikimedia Commons
There are birds we love to hate, such as the Noisy Miner. But much of the annoying behaviour on show may be a result of human-induced changes to habitats.
The numbat, Australia’s equivalent of a meerkat, is one of the unique mammal species confined to the south west.
Sean Van Alphen
South west Australia is home to an astonishing number of plants and some of the country's weirdest wildlife. Now we need to protect it.
A Japanese fish found in Washington after hitching a ride in a boat sent across the Pacific Ocean by the 2011 tsunami.
The 2011 Japan tsunami illustrates how more marine creatures are crossing the oceans than ever before - and not all of them are friendly travellers.
Fallow deer are on the rise.
Fallow deer image from www.shutterstock.com
There are now six species roaming wild, and their numbers are increasing dramatically as their population expands and through human action. As they spread, they raise uncomfortable issues for conservation.
Jelly invasion: is this a vision of the future for our oceans?
We know a lot about the potential negative effects of ocean acidification on marine creatures. But might some species actually benefit? The answer is yes, but this isn't necessarily a good thing.
Small birds such as this superb fairy-wren can benefit from a bird-friendly garden.
Wren image from www.shutterstock.com
Some Australian birds are pushing out other species, and even damaging trees. The good news is we can help stop the spread of these birds, by putting native plants in our gardens.
Small but dangerous – and coming to the New World.
A small invasive fish known as the topmouth gudgeon has already wreaked havoc on European species and its arrival to the US and South America is only a matter of time.
The continent's ice caps are melting, and both native and alien species will soon colonise the newly uncovered areas.
Eucalyptus trees in plantations are particularly vulnerable to pests.
Invasive pests threaten the world's much-needed planted forests, as trees are declining.
There’s nothing feral about this Australian wildcat.
Photograph by Angus Emmott
There's been a lot of talk about killing feral cats, with the government's recently announced war on cats, with a goal to kill two million by 2020. But let's embrace cats as part of Australia's environment.
Feral cats are thought to be responsible for the decline of many Australian species.
Feral cats are highly adaptable and highly variable, hence we must continue to search for their Achilles Heel and invest in a wide range of control methods.
Mustela erminea), feral cats ( Felis catus), red foxes ( Vulpes vulpes) and black rats ( Rattus rattus) are invasive predators in different parts of the world.
Clockwise from top left: Sabec/commons.wikimedia.org (CC BY-SA 3.0); T Doherty; CSIRO/commons.wikimedia.org (CC BY 3.0); 0ystercatcher/Flickr (CC BY-NC-SA 2.0)
Research published this week shows saving wildlife is much more complicated than killing introduced predators. Killing predators often doesn't work, and is sometimes actually worse for native wildlife.
Genetic techniques are helping scientists work out how to stop invasive species before they rack up huge environmental and financial costs.
A feral cat cull in Tasmania increased the local population of cats.
Cats and foxes are two of the greatest threats to Australian wildlife. Culling might be one solution, but sometimes culls do more harm than good.
Did foxes ever make it to Tasmania? DNA evidence suggests they did.
New evidence suggests there no foxes in Tasmania. Were there ever? Even if there weren't, the state's multi-million dollar fox hunt was worth it to save wildlife.
Could devils help solve our feral cat crisis? The devil might be in the detail.
Proposals to reintroduce Tassie devils to the Australian mainland have argued devils could help control feral cats. But new research shows there's no simple answer.