Articles tagged with Trees
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A team of researchers used miniature backpacks with accelerometers to study the gliding behavior of Southeast Asian colugos, also known as flying lemurs. The findings show that colugos push off from trees more forcefully for long jumps but quickly reach terminal velocity and land with reduced impact forces.
A study found that elephants' browsing activities create hiding places and twisted crevices in trees, which boost lizard densities. The research suggests that elephants play a crucial role in shaping the ecosystem, particularly in African wildlife refuges.
Researchers at UBC have discovered genetic secrets that enable trees to fight off pests and disease, allowing for the development of breeding programs to repel insects like mountain pine beetles. The study's findings have important implications for the long-term health and sustainability of forests.
Researchers are using transgenic poplars to remove pollutants from a contaminated site in north-central Indiana. The trees have been shown to absorb and break down contaminants such as trichloroethylene, making them a promising solution for phytoremediation.
A new study reveals that large numbers of modern-day beetle lineages evolved soon after the first beetles originated and have persisted ever since. The team used DNA sequencing and fossil records to compile an evolutionary family tree for beetles, showing that many species pre-date the appearance of flowering plants.
A comprehensive study finds that climate change could lead to significant shifts in North American tree ranges, with potential decreases of up to 58% if species cannot disperse. The research used an extensive data-gathering effort and simulated two climate change scenarios.
The University of Arizona's Laboratory of Tree-Ring Research will receive a $9M donation from Agnese N. Haury to build a new archive for its vast collection of over two million tree-ring samples, providing access to data on climate change and environmental issues. The lab has been instrumental in unlocking mysteries in archaeology, eco...
A study by Indiana University researchers found Dechlorane Plus, a chlorinated flame retardant, in tree bark across the northeastern US, with highest concentrations near the Niagara Falls factory. Tree bark can serve as a natural passive sampling device to detect airborne chemicals.
A NASA study found that Hurricane Katrina killed or severely damaged 320 million trees in Gulf Coast forests, weakening their ability to store carbon from the atmosphere. This has led to these forests releasing large quantities of carbon dioxide into the atmosphere, potentially amplifying climate warming.
Hurricane Katrina's impact on Gulf Coast forests can cancel out a year's worth of new tree growth in other parts of the country. The study found that 320 million trees were killed or severely damaged, releasing significant amounts of carbon into the atmosphere.
Researchers found that the earliest birds primarily made their livings on the ground rather than in trees. By analyzing toe claws of 249 species and fossilized ancestors, they concluded that early birds foraged predominantly on the ground.
A new study by Penn State University finds that colugos, also known as flying lemurs, are the closest living relatives of primates. The researchers used molecular and genomic data to analyze the evolutionary relationships among three groups: primates, colugos, and tree shrews.
Researchers studying burrowing mammals, such as moles and mole rats, have discovered unique adaptations that enable them to dig efficiently in rocky soils. Convergent evolution plays a key role in the development of these specialized features, allowing these mammals to thrive in challenging environments.
Researchers found that trees in low-nitrogen soils produce more anthocyanins, which protect the leaves longer and allow for greater nutrient recovery. This study supports a hypothesis suggesting that trees produce red pigments to aid in survival during the winter months.
ISU study reveals forests in Upper Midwest have lost tree species diversity and structural complexity since the mid-1800s. Deciduous trees like aspen and birch have replaced conifers, while smaller trees dominate modern forests.
Researchers found barred owls thriving in Charlotte's urban areas due to open understories and birdfeeders attracting prey. The study suggests that suburban neighborhoods can serve as an 'uber-forest' for owls, contradicting previous assumptions about their habitat needs.
Researchers at the University of Washington have developed genetically engineered poplar plants capable of taking up to 91% of trichloroethylene, a common groundwater contaminant. The transgenic plants can break down pollutants into harmless byproducts at rates 100 times faster than unaltered plants.
Researchers identified gambogic amide, a compound in tree bark, that mimics NGF's effect on brain cells by binding to TrkA. This finding suggests potential as a therapeutic treatment for neurodegenerative diseases such as Alzheimer's and stroke.
Despite predictions of collapse, Amazon forests in drought-stricken regions grew more vigorously during the 2005 drought, indicating a positive response to drought conditions. This finding contradicts global climate models and suggests a negative feedback loop that could slow down global warming.
A new study proposes a universal rule to explain the equilibrium of plant populations, identifying phytoplankton as the shortest-lived species and trees that can live for centuries. The research suggests that plant mortality is highly temperature-sensitive, with potential increases of 40% in land temperatures above 4ºC.
Researchers at Virginia Tech study a Japanese beetle that may curb the spread of HWA without damaging forest ecosystems. The beetle has shown encouraging results in previous releases, and scientists hope it will be an effective natural enemy against the invasive insect.
A new analysis by Oregon State University and U.S. Geological Survey suggests that dense conifer forests may be harming dozens of animal species dependent on shrubs, herbs, and broad-leaf trees. At least 78 vertebrate species have been documented to require non-coniferous vegetation, which is often scarce in managed forests.
A decade-long experiment found that trees only store significant amounts of carbon when receiving sufficient water and nutrients, suggesting proposals to bank CO2 in trees may not be effective
A CU-Boulder study found that bird presence in conifers increases tree growth by up to one-third, removing damaging insects. The study's findings suggest a complex relationship between birds and trees, with implications for forest health and management.
A study found that mature forest produces almost 10 times as much sugar per hectare than recently logged forest, but overall honey yields are still high due to extensive flowering. Nectar production in young trees regrowing after logging is not significantly affected, contradicting beekeepers' concerns.
A new study published in Biological Conservation shows that wolves are allowing aspen trees to recover in Yellowstone National Park for the first time in over 50 years. The presence of wolves is altering elk behavior, causing them to avoid browsing in certain areas where they feel vulnerable, leading to a significant reduction in elk b...
A new study reveals a significant increase in creeping vines in southeastern US forests, with up to a 10-fold growth in just two decades. The vines' adhesive roots and tendrils are changing the forest's makeup, leading to a decrease in small tree density.
The loss of eastern hemlocks may lead to significant changes in streamflow, forest structure, and soil moisture. Eastern hemlocks play a crucial role in maintaining the ecological balance of mountain ecosystems, providing critical habitat for birds and other animals.
Researchers report that much of Tahiti's original genetic diversity still exists in remnant populations, offering a glimmer of hope for conservation efforts. The study suggests that targeted measures may preserve a representative fraction of the island's endemic tree snail genetic diversity.
Researchers at Oregon State University have successfully manipulated the growth in height of trees using genetic modification, creating miniature trees that can range from a few inches to over 50 feet tall. The findings offer potential for new products in the ornamental and nursery industries, but regulatory hurdles must be overcome.
A new Oregon State University study found that salvage logging and replanting increased fire severity in areas burned by the 2002 Biscuit Fire. Natural regeneration of forests appeared to result in less risk of severe future fires.
Scientists at the University of Liverpool discovered that humans' ability to walk upright developed from ancestors foraging for food in forest tree tops. They found that this trait evolved before walking on all fours on open land, and was later adapted for life on the ground.
A study by researchers found that wild orangutans' upright walking, or bipedalism, may have arisen in tree-dwelling apes, rather than in human ancestors. The discovery challenges the long-held savannah hypothesis and suggests that early human ancestors abandoned high canopies for forest floors, where they remained bipedal.
A recent study by Stanford University researchers found that tropical forest birds can thrive in coffee plantations with minimal restoration, highlighting the importance of preserving remnant trees and riparian corridors. The study suggests that humans and birds may coexist successfully if farmers leave small reserves of native forest.
Researchers reconstruct tree-ring record of upper Colorado streamflows back seven centuries, revealing 25-year drought period with 15% below normal flow. The megadrought spanned 1118-1179, with 13 consecutive years of below-normal flows, and is comparable to the region's last 100 years of below-average flows.
Research led by University of Arizona scientist Paul R. Sheppard found that tree rings from Fallon, Nev. showed quadrupled tungsten levels between 1990 and 2002, preceding a rise in childhood leukemia cases. The study suggests environmental contamination may be to blame for the cluster.
An international team of researchers has found evidence of the Earth's earliest forest trees, dating back 385 million years. The discovery includes upright stumps of fossilized trees that reached at least 8 meters in height, forming the first known forests on earth.
A new study suggests that tropical rainforests are crucial in slowing down global warming, while planting trees in mid- and high-latitude locations could exacerbate climate change. The research confirms that forests in these regions would not only fail to mitigate the effects of global warming but also potentially increase temperatures.
New study suggests tropical forests are efficient at cooling the planet due to their ability to store large amounts of carbon and produce reflective clouds. In contrast, forests in snowy areas can warm the Earth by absorbing sunlight that would otherwise be reflected back into space.
A new study published in Forest Ecology and Management found that logging after a wildfire can lead to high fuel accumulation, regardless of whether the site is logged or unlogged. The research showed that logging residue contributed to four times more fine fuels on the ground, while logging caused fewer snags and large woody debris.
Researchers from Oregon State University found a high level of naturally-regenerating tree seedlings in burned forest lands. The density of surviving conifers was similar to that of traditional old-growth forests, with some plots already having larger trees considered 'free to grow' by forestry standards.
Research reveals tree frogs maintain grip by keeping toe pad angle low, detaching at 90°. Larger species adapt to grasp objects, allowing them to climb like humans.
A comprehensive tree of mammalian evolution puts major diversifications well after dinosaur die-off, casting doubt on their impact. The team constructed a complete evolutionary tree using molecular data and fossil evidence, finding that diversification didn't take off until the Eocene epoch, about 56 to 34 million years ago.
A Smithsonian-led research team has won a scientific prize for their study on the impacts of habitat fragmentation on the Amazon ecosystem. The team found that tree communities are rapidly changing in forest fragments due to ecological changes near the margins, posing a significant threat to Amazonian biodiversity.
Researchers found that asexual bdelloid rotifers have evolved independently into distinct entities, with genetic and morphological cohesion within populations and divergence between them. This suggests that factors other than interbreeding control species cohesion and divergence in these organisms.
A University of Alberta study reveals that tundra treelines are advancing at a faster pace than previously thought, leading to significant changes in vegetation and habitat loss. The researchers found that warmer temperatures triggered an 'upslope surge' of trees, forcing out native species and altering the landscape.
Research in Hluhluwe-Umfolozi Park, South Africa, reveals that elephants' preference for marula fruits poses a risk to female Marula trees, which are more susceptible to damage and death. The study suggests that evolution may have favored the development of trees with better resprouting abilities to counter this selective pressure.
Researchers at the University of Vermont have developed a 'whey-based fungal micro-factory' to combat the eastern hemlock tree's decline due to an exotic pest. The approach involves spraying a sweet whey solution with targeted fungus into infected forests, promoting self-replication and reducing pesticide use.
Researchers found that ski pistes above tree line have fewer species and lower bird numbers compared to natural grassland at similar altitudes. Ecologists warn of potentially serious threat to wildlife habitat conservation in the Alps.
A large-scale study reveals that soil composition significantly influences where certain tree species grow in tropical forests. Researchers found strong associations between tree species and nutrient distributions, suggesting differences in nutrient requirements among trees may help explain coexistence.
Scientists analyzed rafflesia's genome to determine its closest relatives are in the Euphorbiaceae family, with blossoms just a few millimeters in diameter. The plant's massive increase in flower size over millions of years is one of the most significant among living organisms.
In semi-arid environments, trees have evolved to access moisture from bedrock fractures and quickly recover when heavy rains occur. Understanding these surface-atmosphere interactions is crucial for predicting water supplies and managing scarce resources.
Red squirrels have figured out a way to predict spruce tree seed crops months in advance and bet on the most abundant harvests. By producing second litters before bumper crop seasons, they increase their chances of survival and reproductive success.
The production of frankincense is declining in the Horn of Africa due to intensive tapping, which diverts carbohydrates from reproductive organs. The study suggests that less intensive tapping procedures and rest periods are needed to ensure sustainable production.
A new study reveals that planting trees can help slow down global warming, particularly in tropical rainforests where they absorb carbon dioxide and increase cloudiness. However, afforestation in mid- to high-latitude locations may actually create a net warming effect due to the albedo effect of forest canopies.
Scientists have created a reversible, non-destructive chilling method to study below-ground carbon allocation in trees. This technique temporarily interrupts carbon movement and leaves the tree alive, allowing for accurate measurement of carbon storage.
The study found that different seed dispersal methods, such as gravity and wind, result in distinct patterns of tree clustering in tropical forests. Trees with ballistic dispersal tend to cluster tightly, while those with wind-dispersed seeds have surprisingly tight clusters due to the dense forest canopy.
Research reveals that Amazonian forests are undergoing a rapid transformation as a result of fragmentation, leading to the loss of rare and slow-growing tree species. The study found that small, fast-growing trees store less carbon, contributing to global warming.
Scientists at UCI found that forest fires can lead to cooling of the northern climate due to increased snow reflectivity. This study suggests that preventing boreal forest fires could have unintended consequences on global temperatures.
Researchers found that northern forest fires could lead to a net cooling effect due to the reflection of sunlight by deciduous trees with light green leaves. This study suggests re-examining strategies for reducing carbon dioxide emissions through ecosystem management.