Articles tagged with Trees
A new study found that Amazonian forests are impacted by high maximum temperatures, causing tall trees to shed their leaves and branches. The study, led by the University of Helsinki, used LiDAR to track the effects of fragmentation and climate change on plant phenology.
A new plant species was discovered based on the presence of distinctive fruit capsules that likely exploded to disperse their seeds. The fossils were found in India's Deccan Traps, a complex mosaic of basalt rocks leftover from volcanic eruptions that lasted up to 1 million years.
A research team from the University of Göttingen found that vanilla agroforestry systems have advantages for both humans and nature, particularly when planted on fallow land. However, price fluctuations pose a challenge to sustainable cultivation.
A new UF study found that climate change intensifies the negative effects of invasive plants on longleaf pine trees, making them more vulnerable to drought and wildfires. The experiment showed that trees under stress from both drought and invasive cogongrass were least likely to survive after fire.
A recent study by the University of Florida-led team found that common Southeastern US trees are not threatened by exotic fungi carried by wood-boring beetles. The 10-week experiment involved 55 species of Eurasian beetles and over 100 fungi samples, with none causing significant damage to saplings.
A study found that tree susceptibility to decline is driven by edaphology, with high water saturation areas prone to tree death. Slow-growing tree species offer greater protection from falling, while rapid growth rates increase the risk of pathogens and disturbances.
Researchers found that tropical forests can recover soil fertility in under 10 years, plant functioning in less than 25 years, and species diversity in 60 years. Allowing secondary forests to regrow can be an important part of tropical forest conservation, providing a toolkit for ecosystem restoration.
A nationwide study is exploring how genomic ancestry, genomic variation, and environmental variation interact to produce traits important for forest tree fitness. Researchers are using whole-genome sequencing data with large-scale networks of replicated common garden experiments.
Researchers used drones to visualize canopy height and identify 11,153 thousand canopy disturbances, including treefalls and dead trees. These disturbances were more common in older forests with steep slopes or certain soil types.
Researchers discover unique bat-pollination system in Fiji's kuluva trees, highlighting co-dependence between species and urgent conservation needs. The novel chiropteropisteusis system sheds light on the evolution of flowering plants and threatens tree and bat species.
Researchers found that microbes in the soils generate methane gas, which is then processed as it moves through dead trees. The findings shed light on the sources of greenhouse gas emissions from ghost forests, a growing concern due to rising sea levels.
A new study estimates that there are approximately 73,274 tree species on Earth, with 9,186 still to be discovered. This represents a 14% increase from previous estimates of 60,000 and 64,000 species. The majority of these undiscovered species are found in South America, highlighting the importance of forest conservation efforts.
A new study estimates that there are approximately 73,300 tree species on Earth, with 9,000 yet to be discovered. The majority of these unknown species are rare and endemic to specific regions, particularly South America.
Research reveals three modes of thought among Finnish forest owners: one views biodiversity loss as an emergency and advocates for radical change, while others see no problem. The study highlights the importance of acknowledging biodiversity loss denial in forestry discussions.
A new global dataset reveals approximately 73,000 tree species, highlighting the vulnerability of global forest biodiversity to climate change and land use. The research, led by Professor Andy Marshall, also identifies a 'hot spot' of likely undiscovered species in northeast Australia and the Pacific Islands.
A global collaboration of scientists has estimated that there are approximately 73,300 tree species in the world today, with more than 9,000 still undiscovered. This estimate is based on a massive dataset of over 38 million trees spanning 90 countries and 100 territories.
A new study reveals that temperate rainforests can play a crucial role in combating climate change by sequestering carbon and mitigating flooding. However, the research also shows that natural expansion of these ecosystems is unlikely to meet UK targets due to fragmentation and degradation.
Scientists have recorded high levels of atmospheric mercury pollution in a pristine patch of the Peruvian Amazon due to illegal gold mining. Mature Amazonian forests near gold mining are capturing huge volumes of atmospheric mercury, more than any other ecosystem previously studied.
Researchers from Goethe University and the University of Bristol analyzed prehistoric pots and found complex distributions of plant lipids, indicating the processing of various plant species. The study reveals that leafy greens were first used in West African cuisine around 3,500 years ago.
A new study reveals that trees benefit from having more space, reducing competition and helping them recover from fire damage. By alleviating stress caused by neighbors competing for limited water resources, trees can fend off beetle attacks and heal after fire, increasing their chances of survival.
A University of Arizona-led team combined tree-ring data with forest inventory measurements to predict future tree growth. The researchers found a 56-91% decline in individual tree growth, leading to less carbon sequestration by Arizona's forests.
Green backyards in cities provide multiple benefits, including improved thermal comfort and increased carbon storage. Small differences in green structure can yield significant benefits, with greener courtyards showing up to 11°C cooling effects. Proper maintenance is key to enhancing these benefits.
A study found that frequent-fire forests in the Sierra Nevada have far fewer trees due to fire suppression, leading to increased competition among remaining trees. Managing for resilience involves drastically reducing densities to create low-density stands with less tree competition.
Researchers found that trees that induce defense mechanisms against herbivores attract more predators, reducing insect abundance. This defense is critical for tree canopies and promotes biodiversity.
Researchers have found an unprecedented increase in winter stream flow rates over the last 25 years, with nearly 80% above average, driven by permafrost melt and forest fires. The combined effects of these factors are accelerating Arctic ice melt and exacerbating global warming.
A research team at the Beckman Institute for Advanced Science and Technology developed a chemical process to mimic trees' vascular systems in foamed polymers, adding structure and enabling directional fluid transport. The team discovered that increasing or decreasing gelation time enables direct control over the foam's cellular structure.
Researchers found that fungal communities play a key role in tree growth, with some species increasing tree growth rates up to a tree-fold. The study suggests that using specific fungal communities can help improve forestry and potentially absorb more carbon from the atmosphere.
A retrospective analysis of oak tree genomes reveals an identical evolutionary pattern across three French forests, differing according to climatic periods. Oaks can evolve rapidly and redirect their evolutionary trajectories in response to changes in climate, highlighting the need for adapting forest management practices.
A group of high school students, with the help of a STRI scientist, discovered that Azteca ants rapidly repair damage to their Cecropia host plants. Within 2.5 hours, the hole's size had been significantly reduced and was often completely repaired within 24 hours.
A new study finds that controlled burning can stabilize or increase soil carbon, offering a method to maximize carbon storage. By manipulating fires, ecosystems can store huge amounts of carbon when the frequency and intensity are just right. This approach may help maintain natural ecosystem processes.
A new study led by researchers at the University of Gothenburg found that trees contribute to cleaner air in cities. The study measured pollutants in tree leaves and compared them with air pollution levels, showing a clear correlation between the two.
In a new study, desert shrubs in the Southwest have increased their water use efficiency at unprecedented rates to survive a decades-long megadrought. The study found that despite this heroic increase, shrubs may not be adapting quickly enough to long-term drying trends in the West.
Scientists at Tokyo Metropolitan University created a computer simulation predicting the spread of an invasive beetle species threatening Japan's cherry trees. The model, based on river lengths and roads, provided accurate results comparable to real-world data.
Researchers estimate that people living in deforested locations have lost nearly 5 million hours of safe work time due to increased local temperatures, with at least 2.8 million people affected by heavy physical labor. Deforestation accelerates heat exposure and increases the risk of heat-related illnesses.
The research provides a foundation to better understand redwood responses to climate impacts and pathogens. Hundreds of gene families unique to the coast redwood were found, many helping trees respond to stress and resist disease.
The Forest Condition Monitor tool uses color-coded visualization to identify areas of high-stress forests across Europe, allowing for targeted conservation efforts and research. Scientists can study these regions to understand eco-physiological processes and warn forest owners of potential risks.
Scientists have measured the speed of Candidatus Liberibacter asiaticus, a bacterium causing citrus greening disease. The bacteria can colonize a tree in around 80-100 days, faster than symptoms appear, making it difficult to control.
Researchers discovered that forest mammals eavesdrop on monkey meals to access fruit dropped by messy eaters. This eavesdropping strategy is crucial for these animals' survival, particularly during periods when almond trees produce abundant food.
Current climate models underestimate species extinction rates by neglecting the complexities of ecosystems. Researchers used piñon pine data to model how climate affects tree populations and distribution, finding indirect effects that cannot be captured by climate-only models.
A new study ranks live oaks and American sycamores as champions among 17 "super trees" that can mitigate air pollution and climate change in urban areas. The research provides a three-part framework for selecting suitable trees, identifying high-impact planting sites, and engaging with community leadership to make the project a reality.
Scientists at the University of Utah studied the defense mechanism of Armillaria ostoyae, a parasitic fungus that infects and kills over 600 types of woody plants. They found that the fungus's outer layer has a strong protective role, containing calcium to protect itself from chemicals and insects.
Researchers at the Global Environmental Remote Sensing Laboratory are working on improving remote sensing technology to detect subtle changes in forest ecosystems. They have developed a method called PIDS, which can adapt to specific user-targeted specific change detection, and paired it with Landsat data to monitor forest health and c...
Research reveals that tree root systems are a significant source of methane emissions in wetland areas, including the Amazon basin. The study suggests that existing models may be underestimating methane emissions by neglecting the role of trees.
Researchers found that individual urban trees, such as street trees, can capture and store rainfall at a rate of three times that of clusters or patches. The study used sap flux sensors to monitor transpiration rates in 18 mature red maple trees, revealing significantly higher transpiration rates in single trees compared to cluster trees.
A major new study found that woodland and hedgerow creation can support higher numbers of pollinators, including bees, hoverflies, and butterflies. The survey, which covered hundreds of sites across Wales, revealed the importance of carefully managed habitats in land management incentive schemes.
The 74th APS Division of Fluid Dynamics Annual Meeting featured presentations on COVID-proofing daily life, kimchi physics, and extreme heat waves. Researchers also discussed advancements in fire-fighting trees and the science behind jellyfish engineers.
A new Stanford analysis provides empirical evidence that wildfire is accelerating tree species range shifts toward cooler, wetter sites. The study found that two species had larger range shifts in areas burned by wildfire.
Aspen recovery in Yellowstone National Park has been found to be less robust than previously believed due to biased sampling methods. Random sampling of all young aspen within a stand revealed a slower rate of recovery compared to the five tallest young aspen, which were used in previous studies.
Restoring 47.5 million hectares by 2030 demands high-quality seeds and seedlings. The study highlights the need for effective seed control and local community participation to ensure successful restoration projects.
Scientists have investigated the sporulation potential of Phytophthora ramorum on common California plant species. Most species produced spores, with bay laurel and tanoak producing significantly more than others. This study helps predict disease trajectories and informs forest treatment plans.
A University of Cambridge study reveals that periodic caterpillar outbreaks improve lake water quality but increase CO2 emissions by altering nutrient cycling and favouring greenhouse gas-producing bacteria. This phenomenon is likely to worsen as climate change expands the insects' range, threatening northern forests.
Researchers used nationwide airborne laser scanning data and forest inventories to predict bilberry and cowberry yields in Sweden. The models indicate potential berry picking locations but do not accurately predict yields.
Researchers tracked black-tailed deer before, during, and after the Mendocino Complex Fire, finding that all 18 deer survived. Despite burned areas with no vegetation, most deer returned home within hours, potentially due to their loyalty to habitat. However, some deer's body condition declined as they expanded their range.
A team of scientists tracked individual endangered Indiana bats and northern long-eared bats to understand their foraging behaviors and habitat preferences. The results show that most timber harvest strategies are neutral or even positive for the bats, with smaller patch cuts and thinning being compatible with conservation.
The study suggests that unsustainable wood harvesting by the Ancestral Puebloans occurred around 2000 years ago in Chaco Canyon, USA. This practice had significant ecosystem impacts, which are still being felt today.
Ancestral puebloans in Chaco Canyon thrived for over a millennium through indigenous agriculture and water irrigation, but their activities led to environmental degradation. The researchers found significant changes in the local woodlands beginning around 600 B.C., contributing to severe erosion and cropland deterioration.
A new study reveals that incorporating lateral groundwater processes into forest models can significantly impact predictions of tree survival in drought conditions. By accounting for the sideways flow of water through soil, scientists can better understand how riparian forests will respond to future climate change.
A recent study suggests that primates and marsupials were among the few tree-dwelling mammals that survived an asteroid impact 66 million years ago. The researchers used computer models and fossil records to find that most surviving mammals did not rely on trees, but some arboreal species may have been versatile enough to adapt.
A study by the San Francisco Estuary Institute, the Nature Conservancy, and the University of Illinois suggests that access to nature may contribute to lower COVID-19 rates, regardless of racial or socioeconomic identity. The research team found a strong correlation between green spaces and decreased COVID-19 incidence rates.
A new plant species, Aenigmanu alvareziae, has been identified after nearly 50 years of scientists unable to classify it. The plant's DNA analysis revealed its closest relatives were in the Picramniaceae family.