Articles sur Invasive species

Affichage de 121 à 140 de 156 articles

Ash dieback - wilting our leaves since September 2012. Gareth Fuller/PA

We must develop the genetic tools to fight ash dieback

Ashwellthorpe Lower Wood in Norfolk, England has been managed by coppicing, an ancient form of forestry, for more than a thousand years. It was recorded as coppiced woodland in the Domesday Book published…
Not cute, but crucial. Alvesgaspar

Wasps deserve to be loved

Recently a newspaper asked its readers to propose species that were, ecologically speaking, “useless”, such that their loss would not have any great knock-on effect on other species or biological cycles…
Bird feed now. The whole bird later. vermininc

Introducing species to change ecosystems is a balancing act

Species hold ecosystems in a delicate balance. From time to time humans introduce non-native species to an ecosystem, because they may be needed for domestic work, as pets, for carrying loads or even for…
Cane toads spread faster when they arrive in a new area. Flickr/blundershot

Why cane toads give us small hope for climate change

Cane toads are one of the Australia’s most serious invasive species, killing predators such as goannas, quolls and crocodiles in the tropical north. We already know the toads are advancing from Queensland…
Introduced animals are a huge problem in conserving Australian species, but there’s no proof hunting helps. Beppie K/flickr

Hunting game gets new rules in NSW, but should we play at all?

The New South Wales Government will allow hunting to continue in national parks from October, after disbanding the state’s Game Council earlier this month following a scathing review of how it was being…

Wild dogs threaten sheep stocks

Wild dogs may eliminate rangeland sheep production within 40 years unless there is boosted coordinated effort between landholders…
It’s hard being a tiny snail in a Great Lake. Karen Richards

Australian endangered species: Tasmanian snails and limpets

While you’re worrying about pygmy-possums and hairy-nosed wombats spare a thought for some of Australia’s least known endangered species. Freshwater molluscs - snails, slugs and mussels - are in trouble…
The larval caterpillar of the oak processionary moth: I love the smell of pesticide in the morning. Forestry Commission/Crown Copyright

How to kill a very hungry caterpillar (and its invasive friends)

As thousands of people have descended on the Chelsea Flower Show this week, one exhibit has startled visitors by contrasting its beautiful sunken garden with a sinister avenue of dead trees. Designed by…
Christmas Island is a shelter for cultural and environmental diversity. Flickr/Hadi Zaher

Unknown wonders: Christmas Island

Australia is famous for its natural beauty: the Great Barrier Reef, Uluru, Kakadu, the Kimberley. But what about the places almost no one goes? We asked ecologists, biologists and wildlife researchers…

Invasive fish prove to be resourceful

Invasive species of fish, collectively known as Asian carp, may prove more of a concern to American river systems than previously…
Introduced as food for cattle, gamba grass burns in a way that threatens northern Australia’s ecosystems. AAP Image/CRC for Weed Management

Field of nightmares: gamba grass in the Top End

Stretching across the north from Broome to Townsville, Australia’s tropical savannas are the largest, least-degraded savannas on Earth. While fire management, pastoralism, mining, and the decline of native…
A free-ranging (dingo-like) dog in Kakadu National Park. John Tracey

Dingoes, dogs and the feral identity

On a stop-over in Thailand, CSIRO scientist Laurie Corbett noticed some familiar-looking, ginger dogs wandering the streets. This encounter set him thinking about the origins of Australia’s dingoes, a…
Feral cats are a significant threat to Australian fauna species. Tim Doherty / ECU

Feral felines: managing their impact on native fauna

Australian fauna have suffered serious declines since European settlement, with small- and medium-sized mammals being the worst affected. Feral cats depredate native birds, mammals and reptiles and are…
The red fox is significantly implicated in wiping out native mammals, but there are some promising methods for reducing its impact. Harley Kingston

Is it too late to bring the red fox under control?

The red fox may be the most destructive species ever introduced to Australia. For a start, it carries most of the blame for Australia’s appalling record of recent mammal extinctions. Since European settlement…
Fair game: Is the deer a pest or good hunting? black_lava/Flickr

The protected pest: deer in Australia

Deer are arguably the most charismatic of Australia’s invasive species. Long considered a welcome addition to the Australian environment, primarily as a highly valued hunting resource, deer populations…
Australia’s best known pest. AAP Image/Dave Hunt

The toad we love to hate

For some unfathomable reason, cane toads stir the popular imagination. Most invasive species are simply not noticed by most of us, or, if they are, they are quickly assimilated into our mental landscape…
The Indian Myna is an invasive species – but has its behaviour changed in Australia? Wikimedia Commons.

Besieged by destructive plants and animals? Blame epigenetics

Plants and animals that are seemingly harmless in their native habitats can become quite aggressive or even destructive in a new location. Think of the rats that have been a source of human and animal…
One of the worst Christmas presents Australia has had. Richard Taylor

Rabbits and biological control: two unexpected Christmas presents

Domesticated rabbits arrived in Australia with the first fleet and some became established as feral populations around colonial settlements as early as the 1830s. However, the situation changed dramatically…
Starlings were introduced to Australia by humans, but does that matter? Simon Evans

In defence of invasive alien species

My cat caught a starling this week. By the time I intervened, the poor bird’s leg was broken, the kitchen floor was strewn with feathers, and I had to make one of those awful decisions. Was I to leave…
Native or not? Red cabbage palms found in Palm Valley in the Northern Territory were introduced by Aboriginal people thousands of years ago. Jurriaan Persyn

What is a native and why should we care?

New molecular techniques show that an iconic palm only grows in central Australia because humans moved it there thousands of years ago. It poses the question: should we still regard this as a native species…

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