Tag Archives: invasive species

Giant Snails’ Century-Old Shells Recorded Monsoon Rainfall

giant african land snail
The giant African land snail can grow larger than the size of an adult human hand, as seen here. The species, which has invaded habitats in many parts of the world, may help scientists retrace the rainfall history of monsoons across the Indian subcontinent. Credit: Paul Brown/Rex Features via Associated Press

Researchers explored past precipitation in India using shells from very large land snails collected there in 1918 and preserved in a British museum

September 25, 2017 — The shells of a large, invasive snail in India can provide exceptionally fine grained records of past precipitation in the region, a new study finds. By measuring isotope ratios in shells from some of these snails from as long ago as 1918, the researchers have demonstrated that they could reconstruct the subseasonal rainfall rate of past monsoon seasons. Continue reading Giant Snails’ Century-Old Shells Recorded Monsoon Rainfall

Biosecurity blitz to target red fire ants that threaten Australian way of life

red fire ant
A red fire ant found in Brisbane. The venomous ants, if established, could infest every state and territory in Australia. Photograph: Department of Primary Industries/AAP

Second-biggest biosecurity operation in nation’s history sees $411m committed to eradicating invasive species that threatens agriculture, wildlife, tourism and outdoor lifestyle

July 26, 2017 — They are one of the world’s worst invasive species, and now, more than two decades after they are believed to have arrived in Australia, the country is launching the second-biggest Continue reading Biosecurity blitz to target red fire ants that threaten Australian way of life

Alien species invasions and global warming a ‘deadly duo’, warn scientists

argentine ants
Argentine ants (Linepithema humile) feeding on food scraps. They can damage delicate ecosystems and also interfere with electrical wiring. Photograph: Victor Suarez/Alamy Stock Photo

Foreign animals and plants can cause huge damage, with the march of Argentine ants in the UK a new example of how climate change is boosting the threat

July 25, 2017 — Invasions by alien species and global warming form a “deadly duo”, scientists have warned, with the march of Argentine ants in the UK a new example. The public are being asked to be on Continue reading Alien species invasions and global warming a ‘deadly duo’, warn scientists

‘Sixth extinction’ of wildlife faster than feared – scientists

animals
This November 21, 2015 handout photo provided by the US Fish and Wildlife Service(USFWS) shows Wisdom (L), the world’s oldest known banded bird in the wild, with her mate on Midway Atoll National Wildlife Refuge/Battle of Midway National Memorial. AFP PHOTO / HANDOUT / US FISH AND WILDLIFE SERVICE / KIAH WALKER

More than 30% of animals with a backbone – fish, birds, amphibians, reptiles and mammals – are declining in both range and population

PARIS, France (Jul. 12, 2017) — The sixth mass extinction of life on Earth is unfolding more quickly than feared, scientists have warned. Continue reading ‘Sixth extinction’ of wildlife faster than feared – scientists

State of the Environment report: bright spots, but much more to do

australia’s rapidly growing population
Australia’s rapidly growing population, concentrated in a few urban areas, is one of the most urgent pressures on the environment. Photograph: johan63/Getty Images/iStockphoto

Australia has made solid progress in many areas covered by the five-yearly report, but population pressures, invasive species and climate change still present huge challenges

March 6, 2017 — First established in 1996 and occurring every five years, the State of the Environment report is prepared by independent authors and provides a report card across nine Continue reading State of the Environment report: bright spots, but much more to do

Climate change impact on Australia may be irreversible, five-yearly report says

tarkine wilderness area in tasmania
The Tarkine wilderness area in Tasmania. Josh Frydenberg says the State of the Environment report indicates the impact of changing weather patterns is being felt on both land and sea. Photograph: Jason Edwards/Getty Images/National Geographic RF

State of the Environment report says heritage and economic activity are being affected and the disadvantaged will be worst hit

March 6, 2017 — An independent review of the state of Australia’s environment has found the impacts of climate change are increasing and some of the changes could be irreversible. Continue reading Climate change impact on Australia may be irreversible, five-yearly report says

Was the 2015 Wildfire Season Just a Warmup for Climate Change

wildfires
Photo by Revolve Solar

January 18, 2016 — There’s no doubt that most wildfires are sparked by human activity, but thanks to warmer temperatures and extreme drought conditions these disasters are lasting longer and becoming more difficult to control. Continue reading Was the 2015 Wildfire Season Just a Warmup for Climate Change

Global Warming Helped Exacerbate Biggest Year Ever for US Wildfires

oregon
Air attack on southern Oregon wildfire, 2015. Bureau of Land Management Oregon and Washington/Flickr, CC BY 2.0
A warmer, drier climate played a role in fires that burned more than 10 million acres

January 13, 2016 — Scientists and forest agency officials yesterday said they see a link between climate change and the record-breaking 2015 wildfire season.

Continue reading Global Warming Helped Exacerbate Biggest Year Ever for US Wildfires

Forests face more fire, insects and disease

idaho forest
A family hikes through an ancient grove of cedar trees in northern Idaho. Trees like western red cedar and western white pine are better poised to withstand changing conditions due to climate change. Lewiston Tribune photo
Climate change may set up one of Idaho’s iconic but downtrodden tree species for a comeback, even as others become more susceptible to fire, insects and disease.

January 1, 2016 — Researchers say in general the state’s diversity of tree species, habitat types and climatic zones leaves its forests well-positioned to adapt to changing temperatures and precipitation patterns.

Continue reading Forests face more fire, insects and disease