Articles tagged with Forests
A new study reveals that salmon populations are mutually dependent on riparian vegetation, which provides shade and large woody debris that support successful spawning. The researchers found a significant increase in nitrogen levels in plants near spawning sites, suggesting a two-way relationship between salmon and their ecosystems.
A study by Penn State researchers found that quaking aspen groves have declined by 30% in the last 50 years due to environmental changes such as fire suppression, livestock grazing, and increased herbivore populations. The unique history of the Lake Tahoe Basin also plays a role in this decline.
Research by Ricardo Carvajal at University of Michigan found a decline in epiphytes on coffee farms with intensive practices. However, even in most intensive plots, 'reservoirs' where epiphytes thrive were discovered, suggesting potential for conservation through targeted planting.
Researchers examined paleoecological records, archaeological sites, and historical documents to calibrate their understanding of coastal marine ecosystems. They found that human disturbance led to changes in ecosystem structures and functions, with many species becoming ecologically extinct.
The study aims to determine the scope and adequacy of adult day services in the US, identifying gaps in availability and utilization. It will help shape future directions for the field and inform planning at local, state, and federal levels.
A study by Wake Forest University Baptist Medical Center found that reducing prednisone medication can eliminate unpleasant side effects without affecting survival rates. 80% of adult transplant patients were successfully weaned off prednisone within two years, with no increased risk of rejection or infection.
Recent study by Princeton University scientists reveals that reforestation of former farmland has played a crucial role in reducing atmospheric carbon dioxide. The finding highlights the importance of historical land-use changes in understanding carbon uptake in North American forests.
A Duke University study found that carbon dioxide-enriched air accelerates pine tree reproduction, resulting in earlier maturation and higher seed production. This trend may have significant implications for forest regeneration and the Southeast's economy, where loblollies are a crucial forest product.
A study found that forest fragments have insufficient food for some songbirds, leading to reduced feeding visits and longer breeding cycles. The researchers believe that microclimates within small fragments may contribute to lower insect populations, affecting the birds' survival.
According to the report, Indiana's forests have expanded significantly since the 1960s, with 85% of timberlands in private ownership. The number of trees has increased to 2 billion, providing habitat and food for wildlife.
Riparian forest management prioritizes both water and forest health to protect essential links between land and water. The book provides site-specific guidelines for addressing fragmented ecosystems and diverse interest groups, ensuring the health of eastern riparian landscapes.
Aging South Dakota windbreaks are in need of renovation, posing increased risk to agriculture from wind damage. Well-developed forested riparian areas reduce nitrogen in groundwater by up to 100% and surface runoff by up to 98%.
Scientists are using harmonic analysis on satellite images to study changes in vegetation during growing seasons and land use patterns. They can detect desertification, forest regeneration, and climate change by analyzing wave patterns and amplitude measurements.
Researchers at Virginia Tech found that the amount of lead in the environment from bullets on battlefields is not a significant concern for water quality, with no contamination detected off range. However, they discovered that shot impacts cause significant damage to trees up to 140 meters beyond the range.
A 10,000-year-old buried spruce forest has provided evidence of the effects of environment on vegetation at the Pleistocene/Holocene boundary. The unique preservation allows researchers to study tree growth patterns and climate change impacts in unprecedented detail.
A recent study by Wake Forest University Baptist Medical Center reveals that celiac disease is not as rare in the United States as previously believed. The condition affects an estimated 1 in 150-200 people in Europe and can be asymptomatic for many years, then trigger symptoms with exposure to gluten.
A University of Florida study found that rising sea levels are causing cabbage palms and other coastal trees to die due to saltwater exposure. The phenomenon may be more immediate than thought, with small increases in sea level affecting large areas of flat coastline on the west coast.
A national research project will investigate how insulin resistance, a precursor to Type 2 diabetes and obesity, is inherited in three generations of family members. The study aims to identify specific genes responsible for these conditions.
A new watershed model, GISWA, can help predict the effects of forest practices on watersheds and wildlife habitat. The model simulates hydrologic conditions at thousands of locations within a single watershed to provide a detailed representation of water movement.
A Wake Forest University study found that soy high in isoflavones can dramatically lower LDL cholesterol levels by up to 10% and total cholesterol by up to 9%. The study also showed a dose-response relationship between isoflavone content and cholesterol-lowering effects.
Scientists create a new 'drought map' using National Oceanic and Atmospheric Administration (NOAA) satellite data to identify areas hardest hit by the drought. The map compares current surface temperature measurements to average temperatures over the last 10 years, showing whether an area has a normal, low, medium or high drought index.
Researchers are focusing on two isoflavones in soy: genistein and daidzein. Preliminary evidence suggests that predominantly daidzein may be of greater cardiovascular benefit.
A recent USGS study has found that urban sprawl, not fire suppression, is largely responsible for the devastating wildfires in southern and central-coastal California. The researchers suggest that strategic management of buffer zones between urban lands and wildlands could help mitigate ecological impacts.
Two studies published in Ecological Applications found that wildlife corridors increase the movement and population density of butterflies and other habitat-restricted species. The most effective corridors were those that connected isolated patches of open space with existing forest, allowing for improved plant diversity and food sources.
Leaders from national parks, forests, and local communities visited the Idaho National Laboratory to share resources and expertise. The visit aimed to coordinate decisions and manage data between agencies, with a focus on regional transportation, infrastructure, and natural resource management.
A Wake Forest University study found that US dialysis patients are more likely to miss treatment sessions compared to their European and Asian counterparts. Factors contributing to this discrepancy include differences in dialysis prescription, patient health, medical system eligibility, and patient independence.
A computer model developed by Dr. Ron Neilson simulates vegetation type in the US and predicts significant changes under global warming scenarios. Simulations show mixed conifers and hardwoods moving north, while desert species shift eastward, leading to increased fire risk and altered water resources.
The study found that public perceptions of the forest prioritize residential quality of life, community, and environmental ethics. This differs from land managers' focus on tangible aspects like water, wood, and wildlife.
A large clinical trial found that amlodipine, a calcium channel blocker, did not prevent the progression of coronary artery atherosclerosis but slowed it in the carotid arteries. Amlodipine significantly reduced angina pectoris and related procedures like bypass surgery.
A new study found that forest fragmentation allows large predators like raccoons and opossums to target ground-nesting songbirds, leading to a decline in some species. The researchers discovered that small forest fragments have a higher incidence of predation from large species, which can lead to dramatic effects on reproductive success.
Scientists at Duke University and colleagues found that high CO2 levels can increase tree growth rates, but the effect is likely temporary. The experiment, which mimics future CO2 levels, shows a 12% increase in forest growth, but growth rates are expected to decline over time as the forest adjusts.
Dr. David Stump's research reveals a significant impact on patients' lives, with long-term effects on motor skills, hand-eye coordination, and daily functioning. The study highlights the importance of early detection and addressing post-operative deficits to prevent decline in brain function.
Treating people with epilepsy or seizures who are in remote locations like space, underwater or extended airline flights may be possible through telemedicine. Sleep deprivation and weightlessness can provoke seizures during travel.
A Penn State research team has found that small-scale fires play a crucial role in shaping forest structure. By analyzing aerial photographs from 1941 and 1993, the researchers determined that topography is key to understanding natural variability and restoring diverse fire regimes in Northern California.
The study uses satellite technology to track the flight paths of albatrosses in Hawaii, providing insights into their reproduction and population dynamics. The project aims to answer basic science questions and engage students in pre-college education, ultimately contributing to the conservation of these endangered species.
Researchers from Michigan Technological University are studying the effects of landscape structure on plant species, habitat quality, and economic output in public forests. Their goal is to develop a computer model that can help land managers select timber harvesting methods for optimal biological diversity and economic sustainability....
The paper presents an interactive introduction to SORTIE, a computer model of forest dynamics based on individual-trees. The digital output includes scores of still images and a dozen color animations, allowing readers to visualize the complexity of the model.
A study by Ohio University researchers found that oak regeneration is not as promising in areas with high light and low moisture conditions. If oak seedlings are not present in sufficient numbers, mature oaks will be replaced by other tree species, potentially disrupting the ecosystem.
Researchers at Penn State discovered that forest tent caterpillars can evade trees' defense mechanisms by defoliating branches too rapidly for the tree to respond. This social eating pattern may be their protection against a tree's natural defenses, making them chemically invisible to the tree.
A multidisciplinary team is building an experimental facility to test the effects of combined ozone and carbon dioxide on forest stands. The project aims to understand how trees will respond to increased atmospheric carbon dioxide in conjunction with other pollutants, such as tropospheric ozone.
A new laser technique called Scanning Lidar Imager of Canopies by Echo Recovery (SLICER) can rapidly assess forest canopy shapes, allowing for accurate predictions of carbon storage and tree characteristics. This technology has the potential to improve our understanding of forest management and global climate change.
The Southern Pine Beetle is the most aggressive and destructive of five bark beetles that feed on southern pines, causing $900 million in damage to U.S. pine forests from 1960 through 1990. Forest owners and homeowners need to take control measures if they spot the beetle, as it can be a costly pest.