Assessing forests from afar
Researchers suggest a more detailed approach to assessing forest health, focusing on protected areas with finer scale data. This method can help identify non-intact forests and track changes in forest cover over time.
Forests
Articles tagged with Forests
Wildfire perceptions largely positive after hiking in a burned landscape
A post-fire survey at Stebbins Cold Canyon Reserve found that roughly a third of hikers felt energized and awed by the changes they saw. The study suggests people understand and appreciate the role of fire in natural landscapes, but may need education on local ecosystems to fully grasp its impact. Survey participants were highly famili...
Remote South American kelp forests surveyed for first time since 1973
Researchers surveyed remote South American kelp forests for the first time in 45 years, finding relatively unchanged ecosystems despite global threats from climate change and human activities. No signs of destructive sea urchin grazing were observed, but fish populations varied by location within the study area.
Research shows mangrove conservation can pay for itself in flood protection
A global study found that mangroves provide $65 billion in annual flood protection benefits, reducing flood damages and increasing coastal safety. Mangrove restoration can be easily done and has already been successful in projects worldwide.
Satellite data boosts understanding of climate change's effects on kelp
Researchers used 35 years of satellite imagery to study the effects of climate change on kelp forests in Oregon, finding that warm water isn't always bad news for these near-shore seaweeds. The study also challenged previous assumptions about the impact of large winter waves on kelp populations.
Thinning, prescribed burns protected forests during the massive Carlton Complex wildfire
Researchers found that previous tree thinning and prescribed burns helped forests survive the devastating Carlton Complex fire. The study suggests that reducing built-up fuels such as small trees and shrubs pays off, even in extreme wildfires.
Improving assessments of an endangered lion population in India
A new study provides alternative method for monitoring endangered lions, estimating an overall density of 8.53 lions per 100 square kilometers. The researchers found that prey density does not influence variations in lion density within the study site, and baiting lions for tourism perturbs their natural density patterns.
Forests bouncing back from beetles, but elk and deer slowing recovery
New research found that high-elevation forests in Colorado's southern Rocky Mountains have a good chance of recovery after overlapping bark beetle outbreaks. However, foraging elk and deer are slowing the process by browsing smaller trees and stunting their growth.
Life in dead wood
Research project in Ebrach Forest investigates optimal dead wood placement to promote biodiversity, with sun-exposed trunks showing rare species but also numerous shaded species. The study was funded by €500,000 and will run until 2023.
Local water availability is permanently reduced after planting forests
A new study found that river flow is reduced by an average of 25% within five years and 40% by 25 years after planting trees, with some rivers disappearing completely in a decade. The type of land where trees are planted determines the impact on local water availability.
Chromatin organizes itself into 3D 'forests' in single cells
A Northwestern University team discovered how chromatin folds at the single-cell level, revealing a 3D forest structure. This finding could help scientists understand chromatin's role in cancer and other diseases.
Research will help land managers take risk-analysis approach to new wildfire reality
Research developed by Oregon State University enables land managers to take a risk-analysis approach to new wildfire reality. The tools provide analytics that integrate fire risk with management difficulties and opportunities, allowing for preplanning responses that balance risk with success. This approach aims to improve outcomes and ...
If trees could talk: Using historic log structures to map migration of Europeans, Native Americans
Researchers used tree-ring dating to determine when trees were cut down for construction and what the forests were like before European immigration. They found evidence of forest regrowth after Native American population decreases, shedding light on a previously poorly understood period in history.
Modern trees emerged earlier than previously believed, new research reveals
Researchers found evidence of three unique root systems, including a palm tree-like tree and a tree called Archaeopteris, which shares characteristics with modern seed plants. This discovery suggests that the transition toward modern forests began earlier than previously thought, around 385 million years ago.
Tree cavities for wild honeybees
Researchers identified hotspots for wild honeybee nesting sites, including unmanaged forests and coniferous forests in Sweden and Finland. The study suggests that conserving trees with cavities should be included in forest management to support pollinator populations.
Unique data confirms why water turns brown
A 79-year study confirms that increased coniferous forests are the primary cause of water browning in lakes and rivers. Organic soil leaching into lakes and streams also contributes to this process.
Siberian researchers contribute to global monitoring of the Earth's Green Lungs
Researchers from Siberian Federal University participated in a global project to collect data on forest composition, distribution, and carbon stocks. They found that Siberian forests will experience changes due to climate change, including increased growth and thicker vegetation, but also threats from pests and soil erosion.
Changing wildfires in the California's Sierra Nevada may threaten northern goshawks
A new study suggests that Northern Goshawks prefer late-seral forest habitats with larger trees and closed canopies, which are already in short supply due to changing fire patterns. The research found that 80% of foraging habitat and 87% of roost sites were designated a 'High Wildfire Potential Hazard' by the US Forest Service.
Bats may benefit from wildfire
A study found that bats in the Sierra Nevada appear to be well-adapted to wildfire, with overall species richness increasing in burned forests. This suggests that prescribed burns and managed wildfire may benefit these species by creating diverse habitat conditions, including openings for roosting and insect-foraging.
Forests face climate change tug of war
The study reveals that the winner of the climate tug of war between CO2 fertilization and heat stress depends on the ratio between the two. If forests can acclimate, they can tolerate a lower ratio, but if not, it's above 89 parts per million CO2 per degree C of warming. Other factors like forest fires, insect infestation, and exceptio...
Decline in forest carbon storage time
A study reveals a decline in forest carbon storage time, hindering forests' ability to absorb and re-emit carbon. Forests are crucial for regulating atmospheric carbon dioxide concentrations, and increased tree mortality is contributing to this decline.
Forest protection in Guyana
A national REDD+ program in Guyana reduced tree cover loss by 35%, equivalent to 12.8 million tons of avoided carbon emissions. However, tree cover loss increased significantly after carbon payments ended, highlighting the importance of continuous forest protection measures.
To save biodiversity, scientists suggest 'mega-conservation'
The researchers propose a strategic approach to conservation, focusing on keystone ecosystems that support large numbers of dependent species. This mega-conservation approach has the potential to enhance biodiversity and facilitate effective global-scale conservation efforts.
Scientists declare climate emergency, establish global indicators for effective action
A global coalition of scientists declares a climate emergency, warning of 'untold human suffering' without drastic changes. They propose six key areas for mitigation: energy, short-lived pollutants, nature, food, economy, and population.
Insect decline more extensive than suspected
A large-scale biodiversity study found that insect decline is more extensive than previously thought, with many species affected in both grasslands and forests. The researchers identified the biggest losses in grasslands surrounded by intensively farmed land, where the most heavily impacted species were those unable to travel far.
A win-win for forests and small-holder dairy farming in East Africa
A new study found that using Napier grass as a nutrient-rich animal fodder can intensify small-scale dairy farming while reducing greenhouse gas emissions. The research modelled the impact of three scenarios for feeding diets to dairy cows in Kenya, and found that only the Napier grass diet reduced overall emissions by 2.5%.
International research community calls for recognition of forests' role in human prosperity
A new special issue of World Development examines the ways forests serve to alleviate poverty around the world. Research highlights the importance of forests in promoting broader prosperity, including through community-based forest enterprises, ecotourism, and ecosystem services.
Old friends and new enemies: How evolutionary history can predict insect invader impacts
A team developed a way to understand how nonnative insects might behave in their new environments, using evolutionary history. The model can quickly evaluate the risk of insect invasions and help foresters predict which species will be problematic.
UNH researchers find northern forests have lost crucial cold, snowy conditions
Researchers at UNH found a significant decline in frost days and ice days in northern forests across the US and Canada. This change could have serious implications for ecosystems, water supplies, economies, tourism, and human health. Cold temperatures help prevent disease spread and manage insects detrimental to trees.
Study finds managed forests in New Hampshire rich in carbon
A Dartmouth-led study reveals that actively managed mixed wood forests in New Hampshire have significant carbon stores, both above and below ground. The research found that the forests' soil carbon is higher in subplots with more trees, especially fir and spruce species.
Increasing precipitation extremes driving tree growth reductions across southwest
A new study finds that increased rainfall extremes could drive tree growth reductions across the southwest US. Tree-ring records analyzed by researchers reveal that major species such as ponderosa pine, Douglas-fir, and piñon pine are particularly affected.
Limited seed availability, dry climate hamper post-wildfire forest recovery
Research reveals that coniferous forests struggle to recover after wildfires due to limited seed availability, particularly near severe burn zones. Warm and dry conditions further impede new tree seedling establishment. Land managers are advised to concentrate reforestation efforts in cool, wet areas.
Landscape patterns matter
A new research special issue analyzes landscape patterns to understand their effects on resource sustainability, ecosystem health, habitat connectivity, and other societal values. The study highlights the importance of measuring and monitoring these patterns to ensure sustainable landscapes.
Aerosols from coniferous forests no longer cool the climate as much
New research reveals that coniferous forest aerosols no longer cool the climate as much, thanks to increased small airborne particles caused by human activities. The reduction of natural aerosols and increase of smaller particles diminish the cooling effect on the climate.
The global imperative in stabilizing temperature increases at 1.5 degrees Celsius
Aiming to limit warming to 1.5°C can maintain Arctic summer sea ice, forests, and coral reefs, with clear benefits for human health and economies. The authors emphasize the need for immediate and transformative actions in the next decade to achieve this goal.
Planned roads would be 'dagger in the heart' for Borneo's forests and wildlife
The Pan-Borneo Highway will severely degrade Borneo's last expanses of intact forest, increasing pressures on loggers, poachers, and farmers. The network of highways would isolate Sabah's forests from the rest of Borneo, cutting off endangered species' habitats.
From primordial black holes new clues to dark matter
Scientists have made progress in understanding dark matter by studying the interactions between light and gas in intergalactic space. Researchers used simulations and observations of distant quasars to analyze the properties of primordial black holes, which could provide evidence for their role in explaining dark matter.
Conserving rare species for the maintenance of Mediterranean forests
Researchers at the University of Seville studied the pine forests in the Iberian Peninsula to understand factors that make conservation successful. They found that climate, radiation, and temperature influenced the success of translocation, and recommended planting in winter or spring with proper watering.
Volatile organic compounds and isoprene concentrations
Researchers measured VOC concentrations using unmanned aerial vehicles over central Amazonia's plateau and slope forests. Isoprene levels were found to be significantly higher in near-canopy atmosphere over plateau forests compared to slope forests.
Deer browsing is not stopping the densification of Eastern forests
A new study by Penn State researcher Marc Abrams suggests that white-tailed deer browsing has not impacted forest canopies, but rather slowed the densification process. Forests are becoming increasingly dense due to a lack of fire and increased deer populations.
Coca and conflict: the factors fuelling Colombian deforestation
A University of Queensland-led study identified factors fuelling Colombian deforestation, including conflict between illegal groups and government forces, as well as proximity to coca plantations and mining concessions. The research highlights the importance of stable governance in retaining forests and reducing deforestation risk.
Non-native invasive insects, diseases decreasing carbon stored in US forests
A study by the USDA Forest Service and Purdue University finds that non-native invasive insects and diseases are reducing the amount of carbon stored in trees across the United States. The study estimates that 41% of live forest biomass is threatened, with certain species like emerald ash borer and gypsy moth causing significant damage.
New study shows impact of largescale tree death on carbon storage
A new study by the University of Birmingham found that large-scale tree deaths worldwide are responsible for more than a tenth of total tree deaths. The research used satellite observations and computational models to calculate the impact of these events on carbon storage, revealing that they account for 12% of global tree mortality.
Forest biomass loss from pest invasion
Estimates suggest that non-native pests contribute to the death of approximately 5.5 TgC per year, impacting forest carbon budgets and ecosystem services worldwide. Compensatory growth of non-host trees is observed, but most pests have not yet invaded their hosts' full ranges.
Mechanisms underlying forest water-use efficiency
Forest water-use efficiency has been increasing globally, with trees conserving water through elevated CO2 levels. Photosynthesis is the primary driver of this increase, while stomatal conductance reduction is limited to drier forests.
New study aims to help protect the world's trees and forests from harmful pests and diseases
A new study by CABI presents guidance on monitoring non-native pests that can pose a serious threat to forest resources. The team recommends considering important factors when monitoring for non-native pests, including the location and timing of sampling, to ensure effective biosecurity measures are taken.
Climate change alters tree demography in northern forests
A 38-year study found climate change affects conifer growth, while broad-leaved trees thrive, altering forest composition and ecosystem functions. Climate change accelerates, primeval mixed forests may shift to broad-leaved tree forests, impacting carbon storage, water provision, biodiversity, and wood supply.
Elephant extinction will raise carbon dioxide levels in atmosphere
Research suggests that forest elephant extinction will lead to an increase in fast-growing tree species, which store less carbon than slow-growing species. This shift will reduce the forest's ability to sequester carbon, releasing more CO2 into the atmosphere.
New species of flying squirrel from Southwest China added to the rarest and 'most wanted'
A new species of flying squirrel from Southwest China, Biswamoyopterus gaoligongensis, has been described. The discovery sheds light on the genus' previously unknown range and highlights the need for further research into its ecology and conservation status.
'Ohi'a Challenge winner announced at Hawai'i Conservation Conference
Dr. Ryan Perroy's solution uses high-resolution cameras and sensors to improve early detection of Rapid 'Ohi'a Death across forests, giving managers precious time to respond to outbreaks. The innovative approach also involves collecting samples from suspect trees using drones for laboratory analysis.
Irrigated farming in Wisconsin's central sands cools the region's climate
Research by University of Wisconsin-Madison scientists found that irrigated farms in the region lower maximum temperatures by one to three degrees Fahrenheit on average, while increasing minimum temperatures up to four degrees. This cooling effect can significantly impact local climate, plant growth, and human health.
UCI, UC Merced: California forest die-off caused by depletion of deep-soil water
A study published in Nature Geoscience found that California's Sierra Nevada mountain range experienced a catastrophic forest die-off due to depleted deep-soil water. The researchers discovered that years of severe drought and abnormally warm temperatures exceeded the safety margin for trees, leading to widespread tree death.
New research shows importance of climate on spruce beetle flight
New research finds that climate change could lead to more frequent and intense spruce beetle outbreaks in the Rocky Mountains. Warmer temperatures could extend the beetle's flight period and make coordinated attacks harder to predict.
South African forests show pathways to a sustainable future
Researchers found that coastal, indigenous forests in South Africa store a moderate to large amount of carbon, making them important for conservation. The study also highlights the need to balance forest productivity with local community needs in order to achieve sustainable development.
UNM scientist makes case for stabilizing forest carbon to help mitigate climate change
Researchers argue that policymakers should use disturbance ecology to stabilize forest carbon and account for risks in climate change mitigation policies. This approach aims to balance immediate loss with long-term storage, promoting forest carbon sequestration.
Thinning forests, prescribed fire before drought reduced tree loss
A study from the University of California, Davis found that thinning forests and prescribed burns reduced tree mortality during a severe drought and bark beetle epidemic. The treatment also helped to increase forest resilience by reducing water stress and making trees more resistant to climate change.
Study highlights vulnerability of rural coast to sea-level rise
A new review article highlights the vulnerability of rural coastlines to sea-level rise, with research showing widespread conversion of upland forests to wetlands. The study emphasizes the need for better understanding of factors influencing land conversion, including human barriers and policy incentives.
Eastern forests shaped more by Native Americans' burning than climate change
A recent study suggests that Native Americans' use of fire to manage vegetation in the Eastern United States had a more profound impact on forest composition than climate change. The researchers found that frequent and widespread human-caused fire resulted in the predominance of fire-adapted tree species, leading to changes in forest c...
Fire resilience of lodgepole pine stands
Researchers found that re-burned areas experienced significant biomass loss and a six-fold decrease in tree seedling density. The study suggests that future short fire intervals may adversely affect the resilience of subalpine forests, threatening their ability to recover from previous fires.
Russian scientists make discovery that can help remove gypsy moths from forests
Researchers from Immanuel Kant Baltic Federal University have discovered a quick and effective method for identifying Gypsy Moth caterpillars' sex. This breakthrough could lead to new ways to control the insect population, allowing forests to thrive once again.