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Articles on Invasive species

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Escaped pet parrots threaten New Zealand’s vulnerable native birds – why a ban is the best solution

The pet trade has spurred a wave of bird imports, leading to escapes or even deliberate releases of exotic species into the wild. New research reveals the threat they now pose to native birds.
Ivor Stuart/The Conversation

Exploding carp numbers are ‘like a house of horrors’ for our rivers. Is it time to unleash carp herpes?

Carp can make riverbeds look like golf balls – denuded and dimpled, devoid of any habitat. Releasing carp herpes virus is a controversial proposition, so let’s weigh up the risks and benefits.
While the European spongy moth outbreak reached a dramatic peak in parts of Canada last year, these caterpillars have completely vanished this year. (Washington State Department of Agriculture/flickr)

Why the spongy moth outbreak has vanished in Québec

Creating and preserving diverse forests can help us prepare for the next insect outbreak and protect our trees.
The round goby is an invasive fish that has become established in the St. Lawrence River over the past two decades, following its introduction into the Great Lakes. (Cristina Charette)

St. Lawrence River zones that are hostile to invasive species can be refuges for native fish

Wetlands can help limit the spread of the voracious round goby, an invasive species that has infiltrated the Great Lakes and has become widespread in the St. Lawrence River.

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