Tag

Invasive Species

All articles tagged with #invasive species

Iceland’s Mosquito-Free Era Ends as Outdoor Mosquitoes Are Confirmed
science1 month ago

Iceland’s Mosquito-Free Era Ends as Outdoor Mosquitoes Are Confirmed

Three wild mosquitoes of the species Culiseta annulata were confirmed in Iceland, marking the first outdoor presence and ending the country’s mosquito-free status; the finding underscores how warming temperatures are expanding mosquito-friendly habitats, though this species is mainly a nuisance rather than a major disease vector.

Colombia approves cull of Escobar’s hippos to protect ecosystems
world1 month ago

Colombia approves cull of Escobar’s hippos to protect ecosystems

Colombia's Environment Ministry authorized a plan to cull up to 80 hippos descended from Pablo Escobar's private zoo to curb their invasive population, after neutering and relocation efforts proved costly or ineffective; officials say the hippos threaten ecosystems and communities, and relocation abroad is expensive, making culling the most feasible option, though animal-welfare groups oppose the decision.

California’s nutria mystery: Oregon-origin theory sparks debate over deliberate release
environment1 month ago

California’s nutria mystery: Oregon-origin theory sparks debate over deliberate release

Genetic analysis links California’s invasive nutria population to Oregon, suggesting deliberate transport rather than natural migration. Nutria are destructive, semi-aquatic rodents that threaten agriculture and waterways in the Central Valley; they reappeared in Merced County after eradication efforts. Since 2017, California has removed about 7,841 nutrias through trapping or sterilization, with officials pondering control options—including hunting—that reflect the ongoing environmental threat.

environment3 months ago

Venice Battles an Invasive Sea Walnut Threatening Lagoon and Fisheries

Venice’s lagoon is being invaded by Mnemiopsis leidyi, the warty comb jelly known as the sea walnut, originally from the western Atlantic and now spreading through the Adriatic likely via ballast water and warmer waters linked to climate change. Scientists warn the invasive jellyfish are proliferating, clogging nets and preying on fish eggs, larvae and plankton, which harms the lagoon ecosystem and threatens the region’s multi‑billion‑euro fishing industry as conditions become increasingly favorable for its spread.

Invasive Oak-Killing Beetle Expands in Ventura County
environment4 months ago

Invasive Oak-Killing Beetle Expands in Ventura County

A dangerous invasive beetle, the goldspotted oak borer, has reached Ventura County, California, threatening local oak ecosystems with significant tree mortality. The beetle, native to Arizona, spreads mainly through firewood and has already killed around 200,000 oak trees in the state. Efforts are underway to contain its spread through tree removal, insecticides, and public education, but eradication remains unlikely.

City Quarantined Over Risky Discovery
environment5 months ago

City Quarantined Over Risky Discovery

Perth has been placed under a city-wide quarantine due to the spread of the polyphagous shot-hole borer beetle, which threatens the local tree canopy and ecosystem. The shift from eradication to containment aims to prevent further spread, with efforts focused on pruning, removals, and community involvement, amid concerns from experts about the risk to broader regions and biodiversity.

Scientists Alarmed by Rapid Southward Spread of Mushroom
science5 months ago

Scientists Alarmed by Rapid Southward Spread of Mushroom

The golden oyster mushroom, a popular edible fungus, is spreading beyond cultivation into forests across North America, disrupting native fungal communities and potentially affecting ecosystem processes like wood decomposition and carbon cycling, raising concerns about ecological impacts and the importance of monitoring microbial invasions.