Research on trees and their role in nature and cities. Covers forest conservation, tension wood, and the benefits of urban trees.
Researchers found that prescribed fire and forest thinning can greatly improve the stand's resistance to catastrophic fire, reducing fuel loads and mortality. The study also suggests that conserving old-growth forests requires active management to replicate essential ecological roles of fire.
A new study from University of Eastern Finland explores the factors contributing to tree mortality in an urban recreational forest in Helsinki. The researchers found that pine trees growing in dry areas are at a high risk of mortality, while spruce trees face a greater threat from climate-driven insect infestations.
Researchers found that forest thinning followed by a prescribed burn can greatly improve the stand's resistance to catastrophic fire. This approach is crucial for conserving old-growth forests in seasonally dry regions, as it replicates the essential ecological roles of fire.
A study by Florida Atlantic University investigated how removing dead wood could reduce wildfire risks and enhance carbon storage. The research found that combining physical harvesting with thinning significantly reduced wildfire risks, while lowering carbon emissions and offering carbon sequestration through products like biochar.
Researchers found that an endophytic fungus boosts poplars' natural defenses and those induced by insect damage, altering the plant's chemical defense profile and supporting it with a self-produced defense substance. The fungus also influences interactions between insect populations living on trees.
Researchers discovered a novel spatial mechanism underlying the coexistence of tree species in forests, with mechanisms such as seed dispersal driving patterns in tropical forests and mycorrhizal fungi shaping patterns in temperate forests. This finding has implications for understanding biodiversity stability and species coexistence.
A recent study from the University of Eastern Finland found that bark beetle infestation can slow down tree growth even before visible signs of mortality appear. The researchers used dendrometer measurements to monitor stem diameter variation in healthy and infested spruce trees.
A new study from USC Dornsife finds that LA's urban greenery absorbs up to 60% of daytime fossil fuel CO2 emissions in spring and summer, providing valuable insights into the impact of trees on air quality. The research provides data-driven insights for future planting efforts and informs the USC Urban Trees Initiative.
A study published in Science Bulletin has created a comprehensive tree density map of China, estimating 142.6 billion trees across the country, with varying densities by region and ecosystem type.
Researchers describe the complex genome of the highly valued white oak (Quercus alba), providing insights into fundamental questions about plant evolution and tree breeding. The study sheds light on the evolutionary history of oaks, including the extent of genetic diversity and population differentiation.
A new study suggests that reintroducing wolves to the Scottish Highlands could lead to an expansion of native woodland, sequestering one million tonnes of CO2 each year. This could help address the UK's carbon removal target and contribute to climate recovery.
A CSU study reveals trees are contracting in response to climate change, failing to regenerate in hottest areas and not expanding into cooler climates. Human-assisted tree migration is proposed as a solution to help forests adapt to climate change.
Researchers found that anthocyanin in wind-pollinated tree stigmas protects pollen germination and growth by scavenging reactive oxygen species. This adaptation helps protect exposed reproductive parts from sun damage.
A recent report by Colorado State University reveals that the state's forests are emitting more carbon than they absorb, primarily due to insect and disease impacts. The study estimated that Colorado's forests stored 1,558 teragrams of carbon between 2010 and 2019.
Researchers developed a cutting-edge method to estimate seasonal tree heights in Shenzhen using multi-source remote sensing data and machine learning algorithms. The study achieved unprecedented precision in tree height predictions, offering vital insights for urban greening initiatives and ecological conservation.
The National Champion Tree Program is now accepting nominations for the 2025-2026 register, with over 1,200 eligible tree species. Nominations will be open through August 2025 and verified trees will be added to the program's data management system.
A University of Liverpool-led study found that climate warming causes a 28% decline in tree growth since 2005 due to temperature-driven changes in seed production. The study also reveals that under warmer temperatures, beech trees shift resource allocation from growth to reproduction.
Researchers created a tool to target agroforestry where it provides the greatest environmental benefits while being economically viable, socially acceptable. The map identifies areas with high impacts on soil erosion, water quality, climate, and profitability for lands not suitable for other crops.
A new study from the University of Illinois explores how differences in ownership motivation affect willingness to control invasive plants and pests. The research suggests that providing subsidies to the weakest link, such as recreationist landowners, can optimize the effect of control efforts and reduce costs.
Researchers found that cacao grafting increases crop yield by 45% after just two years, while preserving native arthropod diversity. This approach rejuvenates old cacao crops with minimal ecological impact.
Scientists have found a consistent pattern of dispersal events where Inga trees migrated from the Amazon to the Atlantic rainforest, highlighting the importance of conserving riverside forests. The study's findings suggest that these 'highways' played a crucial role in shaping the history of biodiversity in the region.
Smallholder farmers in Western Kenya support native-tree restoration for improved crop yields, climate resilience, and food security. However, concerns about increasing tree diversity attracting wildlife and the need for locally designed solutions remain.
A new study from the University of Exeter reveals that Kenyan smallholder farmers face barriers when trying to increase the diversity of trees and shrubs on their land. Factors such as past experiences, influence of other farmers, and perceived ability to grow different tree species play a crucial role in decision-making.
The book presents a comprehensive overview of the negative impacts of Prosopis invasions, including changes to land structure and groundwater depletion. Experts warn that if left uncontrolled, the invasion could spread to cover three-quarters of Kenya and cost USD 375 million annually.
The National Champion Tree Program has launched a new data management system to track the country's largest trees, featuring over 1,200 species and providing detailed information on each tree's measurements and cultural importance. The program aims to protect and preserve these giant trees through public education and engagement.
Researchers at Chalmers University of Technology found that biochar significantly reduces DDT uptake by earthworms in contaminated soil, halving the toxin's presence. This method could enable farming on land deemed unusable due to environmental risks.
Researchers warn of environmental risks posed by snakes and insects in imported ornamental plants, calling for improved regulations and sustainable practices. The study highlights the difficulty of monitoring and controlling pests due to high-volume trade, posing a threat to ecosystems and human health.
Researchers emphasize global importance of tree crops for achieving UN Sustainable Development Goals, while promoting biodiversity conservation and mitigating climate change. Tree crops provide stable habitats, prevent soil erosion, and contribute to greenhouse gas reduction.
Researchers found significant genomic variation across Oregon ash trees, influenced by location, demography and environmental adaptation. This variability could inform breeding programs for climate-resilient ash trees resistant to emerald ash borers and rising temperatures.
Scientists at the University of Florida have developed a genetically edited citrus tree that produces a protein killing baby Asian citrus psyllids, which transmit the greening disease. The approach has shown promise in controlling the spread of HLB, but adult psyllids remain a challenge.
New research from Washington University in St. Louis found that pawpaw patches reduce herbaceous plant species diversity and total understory community size, creating a habitat where the rules of competition are more random. The presence of pawpaws also makes it challenging for land managers to encourage the growth of understory species.
Researchers found that taller Japanese black pine trees have deeper roots, making them more resistant to disasters. Shorter trees are more likely to fall due to inadequate root growth.
A new study reveals that nutrient enrichment driven by agriculture and fossil fuel combustion poses a significant risk to tropical forest dynamics. This phenomenon can disrupt forest composition and resilience, particularly in the face of global climate change.
Scientists studied ancient whitebark pine forest on Beartooth Plateau, finding the tree line was 600 feet higher during a moderate climate period. The discovery sheds light on how dynamic ecosystems respond to temperature warming and offers insights into future changes for alpine environments.
The study analyzes 40 years of climate data to identify trends in six metrics impacting apple growth, including extreme heat and cold days. The top three largest apple producing counties in the US are among the most impacted, with Yakima County facing significant challenges.
A study found that dogs were more effective than humans at detecting egg masses of invasive spotted lanternflies in forested areas near vineyards. In contrast, people spotted the egg masses better in vineyards. The trained dogs had a higher detection rate in forests due to their sense of smell.
Researchers at UC Davis reveal a 40-million-year-old genetic mechanism controlling alternating sexes in walnuts, similar to human sex chromosomes. Two variants of a gene linked to flowering type balance each other, maintaining genetic variation and equilibrium.
Research found that 14% of Ecuadorian Amazon tree species are critically endangered, while 47% are endangered, primarily due to declines in animal species that disperse their fruits. The study highlights the importance of incorporating ecological traits into extinction risk estimates.
A study found a strong link between woody cover and large wildfire occurrence in the eastern US, with a 37% increase in woody vegetation over the last 30 years. In some regions, such as eastern Texas and the Appalachian Mountains, each 1% increase in woody cover led to a 3.9% increase in wildfire risk.
A study by University of California - Davis researchers found that well-timed tree planting can boost forest recovery by up to 200% in hotter, drier areas. However, competition from shrubs can hinder this process, and the outcome depends on climate, soil, and vegetation conditions.
The ARC will promote research groups and consolidate others to control greening, especially in areas not currently covered. The center aims to mitigate the disease's impact on citrus production, which has declined by 36.5% and fruit production costs are approximately 20% higher.
Fast-growing tree species are dominating Brazilian forests in regions with high levels of deforestation, threatening ecosystem services and biodiversity. The study highlights the urgent need to conserve and restore tropical forests to preserve these vital ecosystems.
A landmark photosynthesis gene discovery has been made in a poplar tree that enhances plant growth by up to 200% and increases biomass production. The gene, named Booster, has the potential to boost crop yields without requiring more land, water or fertilizer.
The Amazon rainforest is a significant source of condensation nuclei for clouds, according to two studies. The rainforest's plant transpiration and thunderstorms produce aerosol particles that can be transported thousands of kilometers, influencing marine cloud formation.
A Curtin University study uses eDNA metabarcoding to track insect interactions with avocado flowers, detecting five times more unique pest species than digital video recordings. This method could help improve yields and make agricultural operations more efficient by identifying beneficial pollinators and pests.
The Forestry Research journal has been recognized by international authorities for its quality and academic level, with its articles available free of charge on PubMed Central. The journal focuses on major forest species, including timber, ornamental, economic, and ecological trees.
Researchers found that maritime pine seeds retain memories of temperature conditions experienced during embryonic development, influencing gene expression and potentially affecting tree growth. The study suggests epigenetic mechanisms could play a crucial role in helping trees adapt to environmental stressors and climate change.
A study has identified a gene called MdTCP11 that controls the growth of compact apple trees, also known as spur-type varieties. These trees exhibit increased fruit yield and require less pruning, making them ideal for modern orchards.
Researchers in Lithuania have developed Forest 4.0, a smart forest data processing model that enables real-time monitoring of forest conditions, sustainable resource accounting, and transparent governance. The system uses IoT sensors and AI algorithms to detect tree diseases, illegal logging, and predict changes in forest ecosystems.
A study published by researchers from Göttingen University sheds light on the critical role of leaf phenology in trees providing shade and improving climate resilience in cocoa agroforestry systems. The research found that certain shade tree species can significantly influence productivity and environmental stability.
Researchers at Penn State found that Indigenous communities played key roles in the adoption and dispersal of peaches across the continent. Peaches were likely widespread across Interior Southeast settlements as early as 1620, 100 years after Spanish expeditions in Florida and Georgia.
A new survey highlights the need to revive England's hedgerows to meet national restoration targets. While agri-environment schemes have improved hedge condition, overall length remains unchanged. Experts call for increased participation and better incentives among farmers and landowners to rejuvenate the network.
A 20-year experiment found that warmer soils alter the behavior of tree roots in different ways, with oak trees changing their interactions with soil microbes but maple trees maintaining their patterns
A new study by RMIT University found that eight major global cities have inadequate canopy cover despite having an abundance of trees. The '3-30-300' rule, which aims for 30% canopy cover and a view of at least three trees, was used to measure access to nature in the cities.
Research by Göttingen University and collaborators reveals that tree islands within oil palm monocultures can naturally regenerate native tree diversity through ecological restoration. Larger island areas are particularly essential for endemic tree species struggling to find habitats.
Researchers from MSU found that paper birch trees maintain similar enzyme capacities across different environmental conditions, indicating a built-in mechanism for survival. This discovery suggests that plants can adapt to changing temperatures and will continue to provide fuel, food, and fiber for humans.
Research led by the University of Göttingen found enriching beech forests with commercially valuable native and non-native conifer species can enhance biodiversity, ecosystem functioning, and economic performance. The study showed that mixing beech with Douglas fir resulted in positive gains, particularly for biodiversity and economic ...
Researchers found that trees exhibit two distinct swaying patterns depending on wind speed, with branches absorbing energy in light winds and whole-tree sway in higher winds. The transition between patterns occurred at different wind speeds depending on forest density, shedding light on how forests respond to wind stress.
A new study warns that climate change could lead to the loss of up to 68% of the world's temperate rainforests by 2100, highlighting the urgent need for action. The UK has a quarter of the world's potential for restoration and is resilient to low and medium amounts of future warming.
Research by an international team found that birds, bees, and bats working together increased macadamia nut production by up to four times, while reducing insect infestation by 40%. The effectiveness of these ecosystem services depends on altitude and natural habitats.