Articles tagged with Trees
A University of Guam review finds conservation projects have lacked publishable results, revealing the need for adaptive management. The study highlights the importance of including published research scientists in funded conservation projects to generate new knowledge and inform decisions.
Satellite images reveal 35 years of changes in North Carolina's Albemarle-Pamlico Peninsula, showing 11% of tree cover taken over by ghost forests. Extreme weather events contribute to the spread of saltwater inland, poisoning soils and killing tree species.
A study by University of Washington researchers suggests that thicker-leaved tropical plants could flourish in a CO2-rich environment, outcompeting species with thinner leaves. This shift in vegetation could help preserve carbon-absorbing ecosystems and reduce the severity of climate change.
Researchers found that nearly nothing is known about the biggest trees and how they die, making them difficult to study. Climate change, severe storms, and droughts are affecting these giant trees, releasing more carbon into the atmosphere.
Researchers from North Carolina State University found that younger trees take up and release less water than mature trees, suggesting managers should time timber harvests to mitigate runoff. The study suggests leaving older trees alongside new growth can help mitigate effects of forest harvesting on drainage.
A recent study found that beetle outbreaks have impacted around 40% of Colorado's forests, but the effects vary greatly due to differences in forest structures and species composition. Most affected areas still have mature trees capable of regenerating seeds.
A new study reveals that rich countries' consumer demands for products like soybeans, cocoa, and timber lead to increased deforestation in poorer nations. The research found that different tree types have varying environmental impacts, and that policies aimed at preserving forests must also alleviate poverty.
Research shows investing in tree diversity leads to greater long-term benefits and lower costs. High genetic diversity is crucial for tropical forests' resilience to climate change and pests, producing more seeds and fruit. This approach may increase initial costs but offers significant ecological and socioeconomic benefits.
Researchers at the University of Copenhagen refute the claim that old-growth forests play a significant role in climate mitigation due to incorrectly analyzed data. However, they emphasize the importance of old-growth forest for biodiversity. The study found that the carbon storage capacity of unmanaged forests is highly overestimated.
Researchers have developed xylem filters made from native trees that can remove bacteria and viruses from contaminated drinking water, showing promise as a community-based solution. The filters can be fabricated using simple techniques and have been tested in India, demonstrating their effectiveness in real-world situations.
A decline in black cherry regeneration is reported, suggesting that environmental changes might impact other tree species in mixed forests. An increase in pathogens and reduced nitrogen deposition in soil are identified as key factors contributing to this decline.
A new study by UC Berkeley chemists found that vegetation, particularly trees and green plants, are a significant source of aerosol pollution in Los Angeles. The researchers estimated that 25% of the aerosols come from vegetation, with many tree species producing volatile organic compounds.
Scientists studying early-budding trees have identified a key gene, EBB3, that regulates bud-break in response to temperature changes. This discovery could lead to genetically modified crops more resilient to warmer winters and late frosts.
A study in Burkina Faso found that assisted natural regeneration, combined with tree planting and participatory approaches, is effective in restoring degraded landscapes. However, local communities, particularly women, face limited land-access rights, hindering their involvement in decision-making.
A recent study found that European summer droughts since 2015 exceed anything in the past 2,100 years, with climate change and jet stream changes likely causing this anomaly. The researchers analyzed tree-ring stable isotopes to reconstruct summer climate conditions over 2,110 years.
The Reforestation Hub is an interactive map that color-codes individual counties by reforestation opportunity, revealing a great deal of potential for restoration across the US. The tool identifies trends and quantifies land suitability for forest cover, providing valuable insights for foresters and policymakers.
Two Cornell University scientists are tracking down the cause of rapid apple decline, a phenomenon causing trees to deteriorate and die in just weeks. They will analyze root systems, viruses, and commercial apple orchards to determine the underlying cause.
A new study reveals that nitrogen-fixing trees play a vital role in recovering tropical forests by enriching nutrient-poor soils with scarce elements such as phosphorus. The trees' roots weather rocks beneath them, releasing nutrients like phosphorus and molybdenum that boost plant growth.
Researchers identify fungi living in EAB-infested trees, which could be harnessed to control the invasive pest. The discovery opens up new possibilities for managing one of Minnesota's most devastating tree pests.
Researchers found that legume trees can alter their soils' microbiome to increase access to nutrients and support surrounding tree growth. This process involves accelerating mineral weathering processes, releasing vital nutrients for the trees.
Research by Oregon State University reveals that the 21-inch diameter rule in eastern Oregon's national forests hampers restoration efforts, preventing stands from reaching historical densities and basal areas. The study suggests that removing larger shade-tolerant trees can improve old growth tree survival.
Researchers at Texas A&M University discovered evidence of human settlement in the Bahamas around 1200-1300 A.D. using charcoal deposits from human fires thousands of years ago. The new settlers dramatically changed the landscape, leading to increased deforestation and loss of native species.
Researchers identified insect genes that directly guide gall development in aphids, transforming ordinary plant parts into intricate shelters. The discovery of "bicycle genes" reveals a novel mechanism by which insects reprogram plant growth.
A Hungarian research team studied pre-schoolers' attention patterns and found that those who frequently use mobile devices focus more on details than on the global picture. The researchers believe this could have long-term effects on their cognitive development.
Selective conifer breeding accelerates tree growth but may lead to genetic trade-offs with climate adaptation, posing challenges for future forests. The study identified genes associated with growth and cold tolerance, highlighting the need for careful breeding programs to maintain healthy forests in changing climates.
A new study by Oregon State University suggests that low-intensity thinning in riparian zones can aid forest restoration without harming streams. The research examined the effects of shade and light reductions on stream temperatures in three small watersheds in northern California's second-growth redwood forests.
More than half of Europe's forests are at risk from climate-driven disturbances, with large trees and old trees particularly vulnerable to extreme weather conditions and insect infestations. Climate change is projected to increase the frequency and severity of these events, posing significant threats to European forest ecosystems.
Repeated fires alter tree communities, reducing biomass and individual trees by up to 72% over 50 years. Regions with extreme climate variations are most sensitive to fire frequency changes.
A Brazilian study reveals that human activities have caused biodiversity and biomass losses in over 80% of the remaining Atlantic Rainforest fragments. The destruction corresponds to the loss of 70,000 km² of forest, worth $2.3-2.6 billion in carbon credits.
Researchers found mistletoes can increase photosynthesis to share resources with their hosts, reducing harm to the tree. This strategy allows them to coexist and even benefit birds and pollinators.
A new study finds that eastern forests are more responsive to climate change, with younger trees increasing their seed production. In contrast, older western trees have been less responsive, which could limit their ability to regenerate after diebacks. The study reveals a continental divide in forest responses to climate change.
This study introduces a new method using terrestrial laser scanning to monitor changes in leaf water content of tree communities. The technique allows for the measurement and monitoring of leaf water content with increased accuracy.
Researchers found that Eastern bluebirds and tree swallows nesting in noisy boxes spent less time incubating eggs, had fewer eggs hatch, and produced fewer young than their neighbors. This suggests that compressor noise negatively impacted fitness through reduced hatching and fledging success.
A growing body of research helps understand spotted lanternfly biology and management, featuring 25 articles on its impact on native plants and crops. The collection showcases progress made so far in containing the spread of this invasive pest.
Researchers have identified a candidate gene and two deleterious mutations underlying male sterility in sugi trees, enabling selective breeding to reduce pollen load. This breakthrough has the potential to alleviate pollen allergy issues in Japan and globally.
Researchers report the first-ever observation of this unique reproductive strategy in Paranapiacaba Treefrogs. The study found that 3cm-long tadpoles hatch in water pools within bromeliad plant tanks and then transfer to a nearby stream to complete their development.
Researchers have identified 73 different receptors in the antennae of the Eurasian spruce bark beetle, enabling characterization of its pheromone response. This discovery could lead to more effective and environmentally friendly pesticides and bark beetle traps.
A team of scientists from RUDN University developed a new approach to automatic soil mapping using machine learning technologies. The method, which uses traditional rules for manual mapping, provides highly accurate results and easy-to-interpret maps, outperforming existing statistical models.
New research reveals that deforestation in the U.S. does not always cause planetary warming; instead, in some places, it actually cools the planet due to the albedo effect. The study found that forest loss east of the Mississippi River and in Pacific Coast states causes planetary warming.
Researchers at Tampere University discovered how α-pinene reacts with ozone to form aerosol particles, a key finding for understanding atmospheric reactions. The study provides a methodological framework for studying similar reactions and helps demystify complexity in the atmosphere.
Researchers have developed a three-step method to reverse significant reforestation side effects, including rapid soil water loss due to fast-growing species. The approach involves reconstructing slopes and planting slow-growing tree species alongside fast-growing species to increase soil water content.
A study by WVU biologists found that trees globally are consuming more carbon dioxide than previously reported, making forests crucial in regulating the Earth's atmosphere. The research shows that increased photosynthesis is the main driver of this increase, contradicting previous studies.
A new study finds that severe spruce beetle outbreaks followed by wildfires can lead to permanent damage in high-elevation forests. Aspen trees, however, have a higher chance of regrowing from their root systems and may dominate these forests.
A unique peptide found in Australian finger lime has been shown to destroy the deadly bacterium causing citrus greening and activate the plant's immune system to prevent new infections. The treatment is safer for the environment than current methods, using a stable anti-microbial compound that remains effective even in high heat.
A study led by the University of Göttingen analyzed global forest structures and found that precipitation patterns drive diversity in these complex ecosystems. The research team created maps showing regional variability in structural complexity, highlighting the importance of water availability for tree species coexistence.
Researchers have developed a more sustainable approach to treating citrus canker, which reduces copper usage by up to 80%. The new technique involves using less water and copper, resulting in lower costs and environmental impact. By adopting this method, citrus growers can minimize the risk of developing copper-resistant strains.
Researchers found that black howler monkeys remember specific locations for accessing ripe fruit and recall ripening patterns of different trees. The monkeys also use vocal warnings to defend their territories from rival troops.
Researchers found that forests dominated by arbuscular mycorrhizal fungi trees release more nitrogen gases than those associated with ectomycorrhizal fungi, negatively impacting air quality. Meanwhile, AM-associating tree roots enhance soil carbon storage by releasing protected carbon, highlighting the complexity of forest ecosystems.
The invasive Prosopis juliflora tree seriously diminishes water resources in the Afar Region of Ethiopia, consuming up to 3.1-3.3 billion m3/yr and generating US$ 320 million and US$ 470 million net benefits per year. The study highlights the need for a coordinated control program to contain its spread and reduce density.
Researchers developed an algorithm to identify various tree species in satellite images, enabling efficient forest management and monitoring. The neural network-based approach improves accuracy and stability for practical application.
A new study suggests that Native American farmers in the Jemez Mountains of northern New Mexico learned to manage fire as an ally to prevent dangerous blazes, clearing flammable material and promoting forest resilience. The ancient practice of controlled burns could help mitigate modern wildfires.
A new study published in the International Journal of Wildland Fire found that forests with diverse tree sizes and small clearings slow down wildland fire growth. The research used a 3D analysis to examine how forest structure affects fire behavior and revealed that varying tree sizes and shapes can significantly impact fire spread.
Researchers at UCOLIVO Group reduce Verticillium wilt in commercial olive grove by integrating resistant crops and soil disinfestation practices, resulting in 3.1% Picual tree mortality vs 5.6% with traditional techniques. Frantoio trees show even greater resistance to the disease.
Scientists from the Smithsonian Tropical Research Institute synthesize patterns of tropical forest productivity and carbon storage, finding that warm, wet forests with moderately fertile soils store more carbon. The study's findings reveal consistent relationships across regions, influenced by climate and soil conditions.
Research shows that cycad trees' sex can be inferred from their branching behavior, providing a tool for conservationists to assess population traits. This knowledge is crucial for recovering the island's cycad population, as it was killed by non-native insect pests.
Researchers discovered that invasive brown tree snakes on Guam can use a novel, lasso-like locomotion to climb smooth vertical cylinders. This new mode of locomotion has important implications for understanding the snakes and conservation practices aimed at protecting birds from them.
Researchers at Colorado State University and the University of Cincinnati have discovered a new mode of snake locomotion, called lasso locomotion, which enables brown tree snakes to ascend larger smooth cylinders. This discovery may help protect endangered birds from the snakes' impact.
Citrus disease-induced microbial shifts may lead to new management strategies for crops. Researchers found increased diversity in microbiome associated with Huanglongbing disease progression.
Researchers at Umeå University discovered a photosynthetic shortcut in pine trees that allows them to stay green year-round. This mechanism, called spill-over, enables the transfer of energy directly between photosystems I and II, protecting the plant from damage caused by excess light energy.
UC Riverside scientists have received $4.67 million to breed new fruits with natural resistance to Huanglongbing, a lethal tree disease affecting citrus crops worldwide. The project aims to incorporate resistance into the trees themselves through breeding, providing a more sustainable alternative to commercial treatments.