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)
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.
A boat propeller encrusted with zebra mussels.
NPS/Flickr
Zebra and quagga mussels entered the Great Lakes in large ships’ ballast water. Now, local boaters and anglers are spreading them into the southern and western US.
Trees were already known for cooling and cleaning the air of cities. A Europe-wide, participative science project shows how much their density matters for urban biodiversity.
Pine martens are returning to Irish and British woodlands.
Joshua P Twining
A new study shows that when free-ranging cats are more than a few blocks from forested areas in cities, such as parks, they’re more likely to prey on rats than on native wildlife.
Fungi that live on plant roots can help with the uptake of nutrients.
(Shutterstock)
Plants communicate with the fungi on their roots, but the effects on the ecosystem of deliberately adding fungi as a fertilizer are unknown — and might be harmful.
Alien pine trees, which use substantially more water than the native vegetation of the Cape Mountains, reduce river flows to dams that supply the city’s water.
Martin Kleynhans
New research finds 74% of land managers who reported releasing a powerful biocontrol release it during the peak rabbit breeding period. This can lead to rabbit populations actually increasing.
Macaques are regarded as alien species in Mauritius.
Fabian Faber/Shutterstock
What scientists learnt from analysing alien marine organisms that hitch-hike around the world on ships and other vessels that make their way into South African shores.
Matthew Flinders Professor of Global Ecology and Models Theme Leader for the ARC Centre of Excellence for Australian Biodiversity and Heritage, Flinders University