Trees
Articles tagged with Trees
Greening works, but cities must plan it smarter
A recent study analyzed 138 Indian cities using satellite data and explainable AI methods to show why urban greening needs to be tailored to humidity, canopy structure, and airflow. The findings highlight the importance of considering moisture management and ventilation in urban planning to effectively mitigate heat-related stress.
Why are mountain forests in Mexico and Central America hotspots for oak trees? New study led by The Morton Arboretum shows most definitive answer yet
A new study by The Morton Arboretum reveals that oaks rapidly diversified in the Americas when they encountered high-elevation terrain, forming a unique biodiversity hotspot. This is supported by data from 322 of the world's approximately 450 oak species, with Mexico and Central America home to at least 160 different oaks.
How oak trees outwit their predators
Researchers found that oak trees delay leaf emergence to escape herbivores, reducing insect damage by an impressive 55%. This delay allows the tree to avoid being stripped bare and enables it to recover from infestations.
Green alley effectiveness depends on design and purpose, Concordia-led study finds
A Concordia-led study analyzed 53 green alleys and 23 conventional alleys in Montreal and Trois-Rivières, finding that results depend on alley design and purpose. The study suggests a middle ground between community-led projects and standardized approaches to achieve both biodiversity and social cohesion.
Arbor Day Alert: Threat of California’s native tree loss is greater than current estimates
A new UC Santa Cruz study reveals that California's endemic and near-endemic trees are projected to lose between half and three-quarters of their climatically suitable habitat over the next century. The research demonstrates that current conservation status on the IUCN Red List do not reflect this imminent risk.
Beavers leave a trail as they head into the Arctic
Researchers use tree rings and satellites to date changes beavers make to the tundra landscape as they spread northwards. The study provides evidence of beaver colonization in the region starting in 2008, with satellite analysis revealing a significant expansion of surface water between 2015 and 2019.
The fast-track tree breeding method that is restoring European ash to the landscape
Researchers at John Innes Centre develop rapid seed germination protocol, reducing Ash dieback's impact. This new method has already produced over 2,000 seedlings for trials and research.
Smarter forest practices could help protect B.C. forests from wildfire and climate stress, new research suggests
A new book by Dr. Suzanne Simard outlines a different approach to forest stewardship, emphasizing the importance of retaining mature trees and protecting soils, biodiversity, and underground fungal networks. The research shows that intact and lightly harvested forests store more carbon and support stronger recovery over time.
Why treelines don’t simply rise with the climate
A global study reveals treelines shift upslope in 42% of cases, retreating in 25%, due to complex interactions between temperature and human interventions like land use changes. Treeline dynamics also influenced by natural disturbances like fires.
ForestTalks webinar explores integrating Earth observation and national forest inventories across Europe
The webinar highlighted the potential of combining NFI field data, EO disturbance products, and national statistics for robust forest carbon monitoring. Continental-scale carbon balance analysis showed a trend towards neutral over the past decade, with large interannual variability.
New study pinpoints climate conditions for restoring the endangered butternut tree
Researchers at Virginia Tech used modern data science to guide restoration strategies for the endangered butternut tree. The study mapped climate and soil conditions linked to natural disease resistance, identifying prime regions for resistant butternut trees and hybrids across the eastern United States.
First evidence that North Sea ‘Lost World’ had habitable forests during the last ice age
Researchers discovered temperate trees, including oak, elm, and hazel, in Doggerland over 16,000 years ago, revealing a surprisingly hospitable environment. The study suggests that Doggerland may have supported early Mesolithic communities prior to flooding, shedding light on the region's ecological history and human settlement patterns.
How an underground fungal map of the world’s oldest, slowest-growing rainforest trees can boost the resilience of Earth’s long-term carbon sinks
Scientists discovered that a single, 2,400-year-old alerce tree protects hundreds to thousands of underground fungal species. These fungi help forests function by funneling water and nutrients to trees and assisting plants in fighting stressors like drought and pathogens.
More trees where they matter, please
A new study reveals disparities in urban shade levels, leading to greater health risks and exacerbating the 'heat island' effect in cities. Wealthier neighborhoods tend to have more trees, resulting in better shade provision for pedestrians, highlighting a consistent link between wealth and neighborhood tree abundance.
Thunderstorms conjure ghostly coronae in treetops, observed outdoors for the first time
Researchers have observed and measured weak electrical discharges, known as coronae, on trees during thunderstorms for the first time. The phenomenon may impact canopy health, with coronae burning leaf tips and potentially damaging trees over time, sparking further investigation into its effects.
Root microbes could help oak trees adapt to drought
Research found that oak tree microbiomes are resilient to environmental stressors like drought and disease, with subtle changes in root microbiota after prolonged drought. The study suggests a potential role for beneficial bacteria in supporting tree resilience and stability.
Scientists debunk claim that trees in the Dolomites anticipated a solar eclipse
Researchers examined evidence and offered a simpler explanation for increased electrical activity in spruce trees, finding no evidence of anticipation or communication. The study suggests that plants can perceive environmental changes but only respond to significant challenges.
Forest soils increasingly extract methane from atmosphere
Researchers at the University of Göttingen found that forest soils in south-western Germany absorb more methane as climate conditions become drier and warmer. This contradicts current international meta-analyses, highlighting the importance of long-term monitoring for assessing the effects of climate change.
Strategic tree planting brings meaningful carbon reductions
A new study suggests that strategic tree planting in Canada's northern forests could remove at least five times the country's annual carbon emissions, totaling around 19 gigatons by 2100. This would be a significant step towards Canada's goal of becoming carbon neutral by 2050 and meeting its commitments under the Paris Climate Agreement.
How tree rings help scientists understand disruptive extreme solar storms
A recent study published in New Phytologist reveals that trees don't record carbon from solar storms in the same way, affecting how scientists interpret past events. The research sheds light on how biological differences impact tree rings and provides a more accurate understanding of extreme space weather.
To reach net-zero, reverse current policy and protect largest trees in Amazon, urge scientists
A recent study finds that the largest trees in Peruvian Amazon store disproportionately large amounts of carbon, making it difficult to achieve net-zero emissions. Protecting these trees can help conserve biodiversity and forest microclimates against future climate change.
Desperate race to resurrect newly-named zombie tree
A recently identified tree species in Australia, Rhodamnia zombi, is facing extinction due to myrtle rust, a fungal disease that attacks and kills its young shoots. Researchers are working on finding clean cuttings and propagating them to grow resistant seedlings, which may hold the key to resurrecting the 'zombie' tree.
Trees — not grass and other greenery — associated with lower heart disease risk in cities
A multi-institutional study found that living in urban areas with visible trees is associated with a lower incidence of cardiovascular disease, with a 4% decrease. In contrast, higher percentages of visible grass were linked to a 6% increase in cardiovascular diseases.
Increased deciduous tree dominance reduces wildfire carbon losses in boreal forests
Research found that deciduous tree dominance reduces wildfire carbon losses in boreal forests, storing more carbon above ground and releasing less in deep organic soils. This shift could help slow climate warming by reducing carbon emissions per unit area burned.
Recovering tropical forests grow back nearly twice as fast with nitrogen
A new study reveals that tropical forests can regrow up to 95% faster when given sufficient nitrogen, allowing them to absorb more carbon dioxide. This finding suggests that targeting nitrogen pollution from farms and factories may be crucial in helping young forests recover and act as natural climate solutions.
Wildfires reshape forest soils for decades
Research in Chile's national parks shows that wildfires significantly alter soil structure and nutrient cycles, affecting ecosystem resilience. Humid temperate forests recover faster than mediterranean woodlands due to fire-adapted trees and higher rainfall.
How intersections of race, education, and socioeconomic status may predict unequal greenspace exposure
A new study found that considering factors jointly can capture a more accurate representation of disparities in residential greenspace exposure, driven by structural racism. Exposure to trees and grass provides numerous benefits to physical and mental health, but inequities persist due to disinvestment in marginalized communities.
Accurate information on forest biodiversity from aerial images using AI
A new AI method using aerial imagery can reliably identify aspen trees and standing dead trees, crucial indicators of forest biodiversity. The technique has been proven effective in all seasons and can be scaled up for monitoring forest environments.
A new ‘hypertropical’ climate is emerging in the Amazon
The Amazon is shifting to a hotter, drier climate with more intense droughts, stressing trees and increasing mortality rates. By 2100, hot drought conditions could occur up to 150 days per year, affecting tree species that are vulnerable to heat stress.
Cities missing out on nature-based solutions that could boost climate resilience, global experts warn
A new study highlights 21 critical barriers to implementing green and blue infrastructure, including technical, social, economic, governance, and policy challenges. The research provides actionable strategies for practitioners and policymakers to enhance GBI resilience across diverse urban settings.
Maps created by 1960s schoolchildren provide new insights into habitat losses
A new study of 1960s maps created by young people has provided important insights into the timing and extent of habitat losses in England and Wales. The analysis revealed a significant decline in semi-natural habitats, including rough grassland, heath, and wetland, which have lost 42% of their original area over the past 90 years.
Thinning turned an upland forest into a temporary carbon source and made a peatland forest an even stronger carbon source
Research at the University of Helsinki reveals that forest thinning can temporarily boost carbon storage in upland forests, while drained peatlands become stronger net carbon sources due to slower tree growth and increased decomposition. The study highlights the importance of adapting management practices to different forest types.
Simple checklist helps you choose the best way to green your space
A practical, evidence-based checklist developed by scientists at the University of Surrey is helping everyone plan their next greening project with confidence. The study found that mixed gardens, such as small front gardens with a tree, shrubs, and green walls, give the greatest economic benefits for their size.
Africa acacias ‘go for broke’ to grow, use up water to survive drought
Researchers studied the genetic response of umbrella acacia and splendid thorn acacia to drought stress. The study found that umbrella acacias prioritize continued growth over water conservation when water is scarce, using up all accessible water to survive severe droughts. In contrast, splendid thorn acacias invest in water conservati...
California schools are losing tree canopy
A study by the University of California, Davis found that 85% of elementary schools in California lost trees between 2018 and 2022, exacerbating heat and drought conditions. The research highlights the urgent need to protect existing tree cover and improve tree canopy in low-shade schools.
Natural Japanese and Taiwanese hinoki cypresses genetically differentiated 1 million years ago
Genetic analysis reveals clear differentiation between Japanese and Taiwanese hinoki cypress, with divergence occurring 1 million years ago. The study highlights the need for revised classification systems based on genetic regional characteristics to preserve local genetic integrity.
Researchers discover how forest biodiversity increases productivity via complementary use of canopy space by tree species
Researchers found that increased canopy structural complexity drives positive biodiversity-productivity relationships in forests. Complementary use of canopy space by tree species enhances productivity and strengthens over time.
Genetic structure and predicted habitat expansion of Shorea macrophylla (dipterocarpaceae) in southeast Asia
A study analyzing S. macrophylla's natural populations in Kalimantan revealed distinct genetic structures among northeastern, central, and southwestern populations. The ancestral population shows highest genetic diversity and is recommended for conservation as a separate management unit.
The fattening forest: trees of the Amazon are getting bigger
A new study suggests that Amazon forest trees have increased in size by an average of 3.2% every decade over the past few decades. The research found that both large and smaller trees have benefited from increased atmospheric carbon dioxide, leading to a significant increase in tree size.
University of Oklahoma to use AI to predict tree failures before storms hit
The University of Oklahoma is developing an AI-driven framework to predict tree failures before extreme weather events. The TREE-CARE project will integrate advanced technologies with local knowledge to develop solutions that directly benefit communities.
Game-changing biotech for engineering pathogen-resistant crops
Researchers at RIKEN Center for Sustainable Resource Science identified ancient protein SCORE to help plants defend against various pathogens. By engineering synthetic SCORE variants, plants can be made resistant to multiple pathogen types.
UNC-Chapel Hill study uncovers global rules shaping the treeline under climate change
A new study from UNC-Chapel Hill has revealed a dual control system explaining why treelines form where they do and which tree species dominate them. Cold temperatures limit tree survival beyond a certain threshold, while water availability determines which species can thrive at high elevations.
Ash dieback is triple whammy for net zero plans
A study by UKCEH found that ash dieback results in significant greenhouse gas emissions due to soil carbon losses. The research estimated 5.8 million tonnes of CO2 emissions over five years, equivalent to half the amount removed by broadleaf woodlands annually.
Largest database on Mediterranean trees available through open access
A large dataset on Mediterranean tree species has been compiled, revealing significant variations in endemic species across different botanical territories. The study highlights the need for stronger collaboration to support national and regional conservation policies for forest genetic resources.
Trees in the tropics cool more, burn less
A new study found that planting trees in tropical regions can cool the climate by up to 0.8° F and reduce fire risk, offering significant benefits for global temperatures and ecosystems. The research emphasizes the importance of location in determining tree planting's impact on climate effects.
Poplar tree discovery could help shape the future of energy and biomaterials
A University of Missouri-led study has uncovered how poplar trees can naturally adjust a key part of their wood chemistry based on changes in their environment, supporting improved bioenergy production. The discovery sheds light on the role of lignin and its potential to create better biofuels and sustainable products.
Why these hairy caterpillars swarm every decade – then vanish without a trace
Researchers found that the caterpillars' cycles interact with natural controls like viral disease, and they're highly adapted to their environment. Outbreaks can be predicted and damage controlled, but the exact timing is linked to specific factors.
Predicting genomic adaptation in teak, a valuable tropical tree species, to climate change
A study analyzing genome data from teak trees found correlations between temperature and DNA sites, indicating adaptability to rising temperatures. The population in southern India demonstrated high adaptability, essential for effective management of genetic resources and resilient planting strategies.
‘Shore Wars:’ New research aims to resolve coastal conflict between oysters and mangroves, aiding restoration efforts
Researchers found that mangrove populations have nearly tripled in areas with oysters, leading to significant acidification of oyster reef sediment. Oyster shell dissolution could impact reef viability and services like filtration and storm surge reduction.
USC teams up with ShadeLA coalition to cool Los Angeles ahead of 2028
ShadeLA aims to reduce heat risk by expanding tree canopy and shade infrastructure in key public spaces, targeting major sporting events and heat waves. The initiative builds on USC's Urban Trees Initiative and engages community-based organizations to create locally driven solutions for a more comfortable L.A.
Research shows aspen forests slow wildfire spread
A new study from Colorado State University and Western Colorado University found that aspen forests can act as natural firebreaks, slowing fires' spread. Aspen trees with high moisture content and chemical differences reduce flammability, making them more resistant to burning.
Forest trees and microbes choreograph their hunt for a ‘balanced diet’ under elevated CO2
Researchers discovered that oak trees adjust their root systems to access more soil nutrients under elevated CO2, employing both 'do it yourself' and 'outsourcing' strategies. This adaptation enables the trees to optimize growth and maintain nutrient supplies.
A Journal of Environmental Sciences study investigates trees best suited for cities
Researchers used a data-driven approach to filter out ideal tree species for urban forests, mapping carbon stock and biogenic volatile organic compounds (BVOCs) emissions of six dominant urban tree species in Beijing. The study identified two optimal species: Betula platyphylla for high-altitude areas and Robinia pseudoacacia for urban...
Young forests could help to capture carbon in climate change fight
Researchers discovered that young secondary forests, aged between 20 and 40 years, exhibit the highest rates of carbon removal – locking away up to eight times more carbon per hectare than newly regenerating forests. Protecting existing young secondary forests offers immediate substantial carbon removal benefits.
This might be America's first campus tree inventory
Northern Arizona University is taking stock of its 5,000-6,000 trees to advance sustainability and carbon sequestration. The project will provide hands-on research opportunities for students and shed light on the trees' ability to mitigate climate change.
A new, detailed analysis of the benefits and trade-offs of urban street trees in Las Vegas
A new study analyzes the benefits and trade-offs of urban street trees in Las Vegas, finding that they can create shaded spots nearly 30 degrees Fahrenheit cooler than surroundings. The study also highlights the limitations of tree-cooling benefits in hot, arid climates, where water conservation is crucial.
To what extent are tree species in Mexico and Central America threatened by extinction?
Nearly half of Mesoamerica's 4,000+ tree species are at risk of extinction, primarily driven by agriculture and logging. Conservation efforts are urgently needed to protect these species.
Rings of time: unearthing climate secrets from ancient trees
A study by Florida Atlantic University reveals that climate shifts starting around 500 A.D. led to shorter lives and faster growth in bald cypress trees, which may have made them more vulnerable to stress. The research provides a powerful lens into how widespread environmental changes can be.
How does a common plant pathogen affect urban trees, and how should it be managed?
Researchers found that Common Lime tree infections reduced water use and stem growth but still maintained cooling benefits. The study highlights the complexity of balancing disease control with ecosystem services.