Articles tagged with Trees
A groundbreaking study used AI and high spatial resolution imagery to analyze over 300,000 satellite images and identify nearly 10 billion trees in sub-Saharan Africa. The research reveals that tree density and carbon stocks in the arid zone are underestimated, with a total carbon stock of 0.84 billion tonnes.
Research from Binghamton University highlights the importance of ants in forest regeneration, with over 95% of New York state forests relying on them to disperse seeds. Ants take seeds with fatty rewards back to their nests, protecting them from consumption by rodents and other organisms, promoting a mutually beneficial arrangement.
Research reveals that Mahogany trees shape the right-forewing of the Mahogany shoot borer, a forest insect-pest. The study found that the wing form differs between males and females, with larger wings on Cedro host plants.
The fungi Neofusicoccum mediterraneum and Neofusicoccum parvum have been found infecting pines in Southern California, causing a deadly disease known as pine ghost canker. The pathogens are native to the US but have recently started infecting trees in urban forest areas.
A Stanford-led study estimates that about 20% of all Sierra Nevada conifer forests are mismatched with the climate around them. This means they are temporarily surviving in habitats that have grown too warm for them, but are likely to be replaced by tree species better adapted to the climate after catastrophic wildfires.
A study by the University of Göttingen found that arranging rows of trees at right angles to semi-natural habitats increases pollination performance and nut production. The design also promotes easy movement of bees through the plantation.
Researchers found that conifer-killing beetles can detect the smell of a beneficial fungus through specialized neurons in their antennae, allowing them to identify infected trees. This detection system enables the beetles to locate fungi-produced compounds in tree resin, which may serve as cues for feeding and breeding.
A macroecological study found that giant tree properties, such as trunk circumference and age, are strongly correlated with climatic factors. The probability of a tree being an object of faith tends to increase with lower annual precipitation, highlighting the impact of climate change on spiritual ecosystem services.
Researchers found that symbiotic fungi convert chemical defenses of spruce trees into attractive compounds for bark beetles. The fungi's volatile compounds, particularly oxygenated monoterpenes, serve as chemical signals to keep the symbiosis alive and stimulate tunneling behavior in beetles.
Research reveals DNA methylation plays a crucial role in tree-fungi symbiosis, affecting water uptake and environmental adaptability. Epigenetic modulation between trees and fungi enhances symbiotic relationships, with implications for forest management and climate change mitigation.
Scientists from Poland's Institute of Physical Chemistry have discovered a way to control the population of the pine-tree lappet moth, which threatens coniferous forests. A new pheromone blend based on biocomponents of the sex pheromone has been developed to monitor and potentially control the moth's abundance.
A long-term study from Lund University in Sweden found that native trees are preferred by urban birds due to their availability of resources. Non-native trees lack an evolutionary history with the local ecosystem and have fewer insects, leading to a shortage of food for insectivorous birds.
Researchers found no strong evidence that underground fungal networks, known as common mycorrhizal networks (CMNs), offer benefits to trees and their seedlings. While CMNs exist, there is limited understanding of their structure and function in the field, leading to questionable claims about resource transfer and seedling survival.
A team of researchers at Kyoto University found that the brown lemur is responsible for regenerating large fruit trees in Madagascar's Ankarafantsika National Park. The study shows that lemur seed dispersal can lead to a 1.5% survival rate of seeds, contributing significantly to forest diversity.
Researchers at Cornell University have found that severe drought, lasting three consecutive years, likely accelerated the collapse of the Hittite Empire in ancient Anatolia. The team analyzed tree ring and isotope records to pinpoint this period of severe dryness, which matches the timeline of the empire's disappearance.
Researchers at the University of East Anglia found that the Bahama Warbler may only survive on Abaco island after Hurricane Dorian devastated its forest habitat on Grand Bahama. The study, published in Bird Conservation International, reveals that the bird prefers areas with taller, more mature trees and can adapt to burnt vegetation.
Researchers studied pollen data from North America's Neotoma Paleoecology Database to understand plant migration patterns and climate fidelity. Most plant species have exhibited long-term climate loyalty over the past 18,000 years, while some plants adapt locally in response to climate change.
A team of Oregon State University researchers found that widespread tree scorch in the Pacific Northwest during the 2021 heat dome was primarily caused by direct exposure to solar radiation and extreme heat. The study challenges previous hypotheses that linked the damage to drought conditions.
Researchers developed an effective method to analyze the effect of olive root exudates on Verticillium wilt, a disease causing olive tree death. The study found that exudates from resistant varieties suppress the fungus's germination, while susceptible varieties stimulate its growth.
A new study by the University of Göttingen found that alley-cropping agroforestry significantly improves ecosystem functions, including carbon sequestration, habitat creation, and soil protection. In contrast, open grassland systems did not show significant changes in ecosystem function after conversion to agroforestry.
Researchers found that elevated CO2 levels increase water use efficiency in trees by adjusting stomata opening and closing. The 'g1 number' tool helps predict tree responses under future atmospheric conditions.
Researchers have discovered a way to produce limonoids, a family of valuable chemicals with potential as bee-friendly insecticides and anti-cancer drugs. By identifying the enzymes required for production, they can now use host organisms to create these compounds in a more sustainable way.
A new study reveals that up to 38% of the remaining Amazon forest area has been affected by human disturbances, causing significant carbon emissions. The research highlights the cumulative effect of factors such as forest fire, edge effects, selective logging, and extreme drought on forest degradation.
A Polish study reveals that birch trees grown in highly polluted areas produce pollen with higher levels of the main allergen. The research found significant changes in the physicochemical properties and allergen content of birch tree pollen.
A recent study reveals that elephants play a crucial role in maintaining biodiversity and storing atmospheric carbon in African rainforests. The loss of forest elephants would lead to reduced carbon sequestration, amplifying planetary warming. With critically endangered populations, conservation efforts must prioritize protecting these...
Researchers at the University of Córdoba found that silicon fertilization increases olive trees' tolerance to biotic and abiotic stresses. The ideal dose is 20 mg/liter, and application methods include foliar treatment and soil irrigation.
A study published in Science Advances reveals that the lifespan of a tree leaf is determined by environmental factors such as climate and soil conditions. The researchers found that evergreen conifers make longer-lived leaves in colder climates, while deciduous trees produce shorter-lived leaves in warmer environments.
Researchers link extreme thunderstorms to Amazon tree deaths, predicting 43% increase in large windthrow events by the end of the century. The tropics will see a 50% increase in areas susceptible to extreme storms triggering windthrows.
A new UC Riverside-led study reveals that drought-tolerant trees in urban areas use significantly more water than their natural counterparts. The research found that even 'drought-tolerant' species like eucalyptus and ficus increase their water intake when irrigated.
Computer modeling by Oregon State University scientists shows that Douglas-fir trees are likely to experience more stress from drier air as the climate changes. This is crucial for understanding forest sensitivity to a shifting climate, given their widespread ecological, cultural and economic significance.
The study highlights the importance of a diverse city tree population, with private residences contributing significantly to urban forest diversity and structure. The research found that private trees serve unique functions such as providing fruit, flowers, or aesthetic beauty, while municipal trees tend to be bigger and more resilient.
A new study finds that tropical forests recovering from logging are a source of carbon due to soil and rotting wood releasing more carbon than new growth can absorb. The study highlights the need for sustainable logging practices to minimize collateral damage.
A new study reveals that New York City's vegetation absorbs up to 40% of the city's daily carbon emissions, outperforming transportation sources. The research uses hyper-local vegetation maps and fine-grained modeling to show that urban greenery plays a crucial role in the city's carbon cycle.
A new method reveals that small vascular plants, not trees, played a greater role in reducing atmospheric CO2 levels. The study suggests that weathering, a process that involves the breakdown of minerals, is a more effective way to remove CO2 from the atmosphere.
A new study suggests that UK woodlands could store nearly twice as much carbon as previously thought, based on a 3D scanning technique and analysis of 815 trees in Wytham Woods. This underestimation has serious implications for climate mitigation, forest protection, and restoration targets.
Researchers at Nagoya University discovered that when Ceratocystis ficicola and Fusarium kuroshium fungi are combined, fig saplings experience rapid wilting. The two fungi work together to cause more damage than either one alone, highlighting the importance of considering co-occurring microorganisms in disease control strategies.
A new study by Penn State scientists found that spotted lanternfly feeding inhibits photosynthesis in young maple trees, potentially impairing growth. The study suggests that management decisions can be made to protect inventories based on the findings.
Researchers from SPUN mapped the diversity of mycorrhizal fungi across Palmyra Atoll, finding unique nutrient feedback loops that support rainforests, plankton communities, and coral reefs. The study highlights the importance of these underground networks in maintaining ecosystem resilience to climate change.
Research in tropical forests reveals that nitrogen-fixing trees are vulnerable to herbivory by insects, limiting their growth and survival. This constraint could undermine reforestation efforts and the role of these trees in sequestering carbon dioxide from the atmosphere.
Researchers found the emerald ash borer completes its life cycle in one year in North Carolina, contrasting with a two-year cycle in northern US. This knowledge will aid in releasing parasitoid wasps to manage the insect.
Scientists have discovered a long-sought plant water loss-regulating sensor, composed of two proteins working together to regulate stomatal movements in response to changing CO2 concentrations. This finding has significant implications for trees, crops, and wildfires, as well as efficient plant water use and CO2 uptake.
Scientists developed a first model to predict canopy water content during drought and heat waves. The model could enable fire danger forecasting models that include vegetation in their calculations, making it easier to predict the spread of fires.
Researchers from the University of Göttingen found that European beech trees are experiencing increased drought stress in northern Germany due to climate change. The study reveals that dry locations show the strongest long-term decline in growth, highlighting the need for more resilient tree species.
A new ISGlobal study found that full adherence to the 3-30-300 green space rule was associated with improved mental health and fewer visits to a psychologist. However, only 4.7% of respondents met all three criteria, highlighting a need for more green spaces in urban areas.
A new study reveals that high ecosystem resilience is linked to high mortality risk in western US forests, contradicting previous assumptions. The research combines decades of satellite data and ground observations to show a surprising correlation between forest resilience and tree death rates.
A study by the Leibniz Institute for Zoo and Wildlife Research found that cheetah marking trees serve as hotspots for communication among multiple mammalian species. These trees were visited more frequently by some species, such as black-backed jackals and warthogs, suggesting they gain important information from the scent marks. In co...
Researchers analyzed over 20,000 trees on five continents and found that old-growth trees are more resistant to drought, while younger trees in the upper canopy show greater resilience. This study highlights the importance of preserving old-growth forests for carbon storage and ecosystem functioning.
Forests with multiple tree species have been shown to be more productive, as different species fill distinct niches and compete less. Additionally, genetic diversity within each tree species also promotes forest productivity by increasing resource use efficiency and reducing damage from herbivores and fungi.
A new study found that urban centres with higher tree cover, public parks, and sports fields have better health, equity, and biodiversity outcomes. Exeter was ranked as the most green city, while Glasgow had the lowest score, highlighting the need for re-imaging urban centers to boost biodiversity.
A 30-year tree planting campaign in Portland, Oregon found significant reductions in non-accidental and cardiovascular mortality associated with tree planting. The association grows stronger as trees age and grow, suggesting preserving existing mature trees is crucial for public health.
Researchers found that habitat loss and climate-induced food shortages drive pathogen spillover, but preserving and restoring natural habitats can prevent these events. By analyzing data from Australia, the study predicts when viruses like Hendra and Nipah will spill over from bats to humans.
A recent study found that on average, about half of trees planted in tropical and sub-tropical forest restoration efforts do not survive more than five years. However, survival rates varied greatly amongst sites and species, with some sites seeing over 80% of trees still alive after five years.
Research finds that lianas more frequently infest smaller trees in Southeast Asian forests, hindering their growth. This study transforms understanding of tropical forests and their role in the global carbon cycle. Lianas' impact on climate change is significant due to their ability to reduce carbon uptake and storage.
A new study found that bats play a crucial role in protecting young tree seedlings from insect damage, with three times fewer bugs and five times more defoliation when bats are absent. The research reveals a mutually beneficial relationship between bats and oak trees, with bats serving as a key predator for insects that harm the trees.
A europium-based thin-film coating has been developed to convert UV light to red light, accelerating plant growth. The technology was tested on Swiss chard plants and Japanese larch trees, showing a 1.2-1.4 times greater plant height and biomass in winter conditions.
Researchers at Nagoya University have developed a new method to study the life cycle of tree roots, shedding light on the decomposition process. They found that fine roots, which control nutrient uptake by trees, are discarded and decompose differently than leaf litter.
Ancient tree conservation is crucial for maintaining ecosystem integrity and mitigating climate change. The researchers propose a two-pronged approach to protect these trees, including germplasm conservation and forest rewilding.
Researchers study links between cyclones and forest fires, finding that cyclones can create conditions ripe for fires by damaging trees and altering microclimates. As climate change increases cyclone intensity, the risk of wildfires in previously fire-resistant ecosystems like rainforests grows.
A new study reveals that losing endangered fruit-eating animals in the Atlantic Forest could severely disrupt seed-dispersal networks, leaving plants without an effective means to regenerate. Nearly 55% of specialist plant species rely solely on these frugivores for seed dispersal.
A team of researchers, working with Traditional Owners in the Tanami desert, discovered 12 boab trees with carvings that tell the stories of Indigenous Australians. The ancient art is equally significant as rock art and is now in danger of being lost due to the tree's soft inner wood.