All articles tagged with #forests
German researchers found oak trees delay leaf-out by about three days after heavy caterpillar outbreaks, tracked with Sentinel-1 radar data over five years across 60 forests (137,500 observations). The delay reduces caterpillar survival and tree damage by about 55%, is more energy-efficient than producing extra tannins, and is reversible—showing trees actively adapt to biotic threats in a warming world.
Rising energy costs and supply disruptions tied to global conflict are spilling from households into Africa and South Asia, threatening forests and conservation programs as people switch to more wood fuels and funding for parks and wildlife protection tightens, risking biodiversity in the region.
A fragment of amber found in West Antarctica, dating to 92–83 million years ago (mid-Cretaceous), indicates resin-producing trees once grew near the South Pole, suggesting ancient forested landscapes and a warmer climate; it is the first confirmed amber discovery in Antarctica and provides a direct glimpse into past ecosystems.
Researchers mounted a UV camera on a modified minivan to capture the ultraviolet corona emitted by trees during thunderstorms for the first time. The team observed 41 bursts in sweetgum and loblolly pine across the U.S. East Coast, with each burst emitting billions of photons at around 260 nanometers. This real but previously unobserved glow could influence forest health and atmospheric chemistry and may play a role in thunderstorm electrification, suggesting such coronae occur across forests worldwide.
Germany's forests are severely affected by climate change and bark beetle outbreaks, leading to reduced CO2 absorption. A new reforestation approach involving diverse species is being tested to enhance resilience and restore ecological balance, highlighting the importance of biodiversity in combating climate impacts.
COP30 in Belem, Brazil, aims to address climate change with a focus on Indigenous land stewardship and forest protection, but progress is uncertain as global efforts lag behind targets set by the Paris Agreement, with no major new deal expected this year.
A NASA astronaut captured a striking satellite image of a checkerboard pattern in Idaho's forests, created by 19th-century land management practices that involved alternating areas of timber harvesting and regeneration, with seasonal snow enhancing the pattern's visibility from space.
New research from TUM estimates that lightning kills about 320 million trees annually worldwide, significantly impacting forest ecosystems and carbon cycling, with potential increases in lightning-related tree mortality expected in temperate and boreal forests due to climate change.
U.S. Secretary of Agriculture Brooke Rollins announced the rescinding of the 2001 Roadless Rule, which restricts road construction and timber harvest on nearly 59 million acres of national forests. This move aims to improve forest management, reduce wildfire risks, and boost economic development in rural areas by allowing more local decision-making and responsible resource use.
Two Siberian tigers managed to find each other despite being separated by 120 miles of Russian forest, highlighting the remarkable navigational abilities and strong instincts of these endangered animals.
In Oregon's Blue Mountains, the Humongous Fungus, a massive Armillaria ostoyae colony, is possibly the largest and oldest living organism on Earth, covering up to 3.7 square miles and weighing as much as 27,000 metric tons. This subterranean fungus, known for its honey mushrooms, kills trees by colonizing their roots. Its vast size and age, potentially up to 8,600 years, make it a unique ecological phenomenon, though its exact dimensions and impact remain subjects of scientific study.
Scientists have discovered the first amber on the Antarctic continent, providing new insights into the Cretaceous period's forest ecosystems. The amber, found in a sediment core from Pine Island Bay, offers evidence of resin-producing trees in Antarctica 90 million years ago. This discovery helps reconstruct the ancient swampy, conifer-rich rainforests near the South Pole and suggests that all continents once had climates suitable for such forests. The amber contains micro-inclusions of tree bark and shows signs of pathological resin flow, indicating past environmental conditions.
A study from the University of Bristol challenges the assumption that forests exhibit fractal patterns similar to individual trees, revealing that forest canopies are not fractal in nature. The research, published in the Journal of Ecology, used airborne laser scanning data from diverse forest sites in Australia to compare forest height maps to fractal patterns. The findings suggest that while forests do not display fractality, there are consistent deviations from it across different ecosystems, indicating potential organizing principles in biology and implications for monitoring forests in response to environmental changes.
Redwood trees, typically found in California, are being planted in Washington and Oregon as a potential solution to climate change threats facing the region's forests. While some believe redwoods could play a key role in forest resiliency due to their carbon absorption and resistance to fire and disease, others are concerned about the ecological impact on native plants and animals. The debate continues as tree farmers and organizations experiment with growing redwoods in the Pacific Northwest, with some seeing promising results while others prefer to stick with native species.
A new study reveals that climate change is disproportionately affecting U.S. forests, particularly in the West, leading to decreased tree growth and challenging their role as carbon sinks. The study highlights the urgent need for greenhouse gas emission reductions and forest conservation to address the impact of climate change on forest health and carbon sequestration. The findings emphasize the regional disparities in forest productivity and the dynamic influence of climate change on forests, underscoring the need for urgent action to mitigate emissions and preserve forest ecosystems.