Articles tagged with Trees
A study published by UC Davis Professor Hugh Safford found Jeffrey pines growing above 12,657 feet elevation, surpassing previous records. This discovery suggests that climate change is allowing trees to move higher up mountains at an alarming rate, with the birds carrying seeds being a key factor.
Researchers found that high tree mortality in upper canopy can promote oak regeneration when maple is removed from understorey. Plantings on thinned forest plots showed fewer signs of drought stress, supporting oak growth.
A new study from Umeå University reveals that trees' circadian clocks regulate growth and seasonal events. Adjusting clock-associated genes could help trees synchronize with changing climates, improving forestry management. The study also has implications for global vegetation models predicting forest growth and carbon storage.
A recent study reveals that tropical forests are home to an incredible diversity of chemical compounds, including terpenoids and alkaloids, which could have practical implications for human health. The researchers found that tree species in higher elevations tend to use similar chemicals to protect themselves from enemies.
A recent WSSA research article reveals that focusing solely on deer or invasive shrubs yields little forest health improvement. Instead, managing both threats is necessary to promote tree regeneration and plant community restoration, according to a study spanning over 10 years in Ohio.
Researchers found that Ficus insipida tree cores can be used to characterize spatial and potentially temporal mercury emissions from artisanal gold mining. Tree rings showed higher mercury concentrations near mining sites, indicating a potential network of biomonitoring.
A study in Brazil's Caatinga biome found that removing animals from degraded pastures did not restore soil health after three years. Green manure and strategic tree planting are recommended to accelerate ecological recovery. Soils show severe degradation, with carbon loss and decline in holistic soil health index.
A major new study reveals that tropical forests across the Americas are not adapting quickly enough to climate change. The study found that tree communities are responding too slowly to shifting temperatures and rainfall patterns, making them more vulnerable to extreme climate events.
A new study suggests that easing L.A.'s outdated tree planting rules could significantly grow the city's urban tree canopy without compromising safety. By relaxing restrictions near intersections, utility poles, gas lines, and other infrastructure, tree coverage in lower-income neighborhoods like Boyle Heights could increase by up to 26%.
A study led by Evan Gora found that Dipteryx oleifera trees can survive direct lightning strikes with minor damage, while other trees are badly damaged. The researchers discovered that these trees tend to have fewer lianas and are more likely to gain an advantage in competing for light and space after being struck by lightning.
A new study by Holden Forests & Gardens reveals that American beech trees are experiencing significant mortality and reduced growth due to beech leaf disease, with 30% of trees dying since its emergence in northeast Ohio. The disease has also slowed tree growth, energy loss, and increased mortality in affected plots.
Researchers identified that conservative tree species, which conserve resources rather than extract them, have a greater potential to fix carbon in biomass under real-world conditions. In favorable climates and fertile soils, acquisitive species grow faster but fix less carbon.
Research proposes a new methodology for dynamically optimizing solar panel positioning based on the light needs of crops. Advanced ray tracing techniques are used to evaluate the distribution of solar radiation, enabling the automation of design optimization of agrivoltaic systems.
Researchers have employed artificial intelligence and data analysis to improve forest protection, enabling real-time monitoring and predictive analysis. The innovative forest regeneration model forecasts how forests will grow and change over time, identifying best-suited tree species for different environments.
A new study reveals that tropical forests in the Americas are not adapting quickly enough to keep pace with climate change, with some species thriving while others struggling. The research found that traits such as being deciduous and drought tolerance influence a tree's ability to survive in a changing climate.
Researchers analyzed satellite data from the Sentinel-2 satellites to predict variations in tree traits and map functional diversity. They found significant differences in forest function across continents, with American tropical forests showing greater functional richness than African and Asian forests.
A new study finds that tree planting can be the most cost-effective way of removing carbon as long as careful choices are made about which type of trees to plant and where. This approach balances risks and minimizes the danger of betting on the wrong future.
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.
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 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 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 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.
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.
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.
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.
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.
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.
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.
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 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 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 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.