Image

Forests that may resist climate change

2 May 2024

While it’s common knowledge that mountaintops are colder than the valleys below, a new University of Vermont (UVM) study is flipping the script on what we know about forests and climate.

The study, published in Ecology and Evolution, explores forests that experience “cold-air pooling,” a phenomenon where cold air at higher elevations drains down into lower-lying valleys, reversing the expected temperatures—warm at the bottom, cold at the top—that typically occurs in mountainous areas. That is, the air temperature drops with descent from mountain to valley.

“With temperature inversions, we also see vegetation inversions,” says lead study author and former UVM postdoctoral researcher Melissa Pastore. “Instead of finding more cold-preferring species like spruce and fir at high elevations, we found them in lower elevations—just the opposite of what we expect.”

And the effect on these ecosystems is substantial: “This cold-air pooling is fundamentally structuring the forest,” says study coauthor and UVM professor Carol Adair.

This insight “can help forest managers prioritise and protect areas with frequent and strong cold-air pooling to preserve cold-loving species as the climate warms,” says Adair.

The researchers looked at three forested sites in New England, ranging from the shallow, crater-like Nulhegan Basin of Vermont’s Northeast Kingdom, to the higher peaks and deeper valleys of the Green Mountains, over two years. They collected data on the types of trees present across elevation transects and monitored temperature hourly.

The researchers found that, far from being the occasional nighttime, seasonal phenomenon it’s historically been thought to be, cold-air pooling happens frequently, year-round, well into daylight hours, Adair says. The phenomenon occurred at every site they studied, but was strongest at the site with the shallowest elevation change.

More >>

Source: University of Vermont

Read More
Image

Earlybird rates end TODAY

Earlybird rates end this Friday for Environmental Forestry Conference On 25-26 June, ourFIEA Annual Environmental Forestry Conference is running. Registrations are going very well. We bring practical foresters together with local regulators and national policy-makers to debate and bring constructive ...
Read more
Image

Decarbonising transport & logistics

New Zealand environmental specialist, Toitū, recently held a panel to discuss how New Zealand’s transportation and logistics industry, the nation’s second-largest emissions source, can take effective climate action. They shed light on the critical pressures facing supply chains and how to respond ...
Read more
Image

FIEA wood residues conference: time for action

Low carbon economies, extreme weather events, and building resilient domestic supply chains are critical issues in 2024 and beyond. In New Zealand, this has created opportunities for the forestry sector, including significant investments in forest residues. Harvesting regulations are mandating more wood be collected from the forest ...
Read more
Image

Calling all NZ loader operators – be part of this study

Driven by mechanisation, traditional career pathways in forestry crews are evolving. As part of the Primary Growth Partnership (PGP) programme, ‘Te Mahi Ngahere i te Ao Hurihuri – Forestry Work in the Modern Age’, the Scion Human Factors research group ...
Read more
Image

Kiwi bird surprises at Rosvall Sawmill

Workers at Rosvall Sawmill near Whangārei, New Zealand, had an unexpected visitor, a fully grown kiwi bird. The bird casually strolled into the mill early one Monday morning, and spent a few hours exploring the premises before it found a ...
Read more
Image

Every second counts

During hot and dry periods, there is a serious risk of wildfires. Moreover, a single spark can be enough to start one, in which case every second counts. Having fire extinguishing equipment close at hand can make all the difference ...
Read more
Image

Superhuman AI – smarter than every human by 2025

Billionaire tech boss Elon Musk has recently predicted that superhuman artificial intelligence (AI), surpassing human intellect, could become a reality as soon as next year. If this kind of prediction becomes true, are humans ready to embrace that machines can ...
Read more
Image

Swiss develop drone to explore forest canopy

Inspired by cockroaches, Swiss researchers have developed a new drone which can push away obstacles and move past them. In the future, it will be used to measure biodiversity in remote areas. Environmental monitoring in areas with dense vegetation is ...
Read more
Image

NZ forestry H&S statistics updated – March 2024

Safetree NZ has released their H&S stats dashboard for March 2024. WorkSafe provides statistics on forestry fatalities and workplace incidents. These investigations help inform us of any key issues or trends as they come to light. Overall, there is a downward trend ...
Read more