A recent study published by the USDA Forest Service found that the northeastern United States is a high-risk area for invasive forest pest invasions. The study used spatial data to demonstrate a highly aggregated geographical distribution of forest pest invasions in the region, with over 70% of species detected before 1940.
Scientists analyzed long-term data from seven sites in the US and found a substantial increase in water-use efficiency in temperate and boreal forests. This adaptation could enhance timber yields and improve water availability, but may also lead to reduced evapotranspiration and increased continental freshwater runoff.
A Forest Service study found that urban trees can remove fine particulate air pollution, saving lives. The study estimated the impact of urban forests on PM2.5 concentrations and associated health effects in 10 US cities.
The Landscapes of Resilience project explores the role of open spaces and sacred places in community recovery and resiliency. Researchers will create and restore open spaces in post-Sandy affected areas in New York City and design a butterfly garden in Cunningham Park, Joplin, to promote community recovery.
The study estimates that annual net carbon uptake by these trees is 21 million tons and $1.5 billion in economic benefit. Urbanization has led to declining urban tree cover nationwide, with approximately 4 million trees lost annually.
Long-term data from the Hubbard Brook Experimental Forest suggests a trade-off between forest productivity and water flow. A study found that applying calcium silicate to restore soil calcium levels resulted in an increase in forest water use within 5 months.
A new DNA-based technique allows early identification of Geomyces destructans, a fungus causing White Nose Syndrome (WNS), in bats, soils, and cave walls. The test is 100-times more sensitive than previous ones, detecting single spores of the fungus.
A recent study published in Bioscience highlights the importance of long-term, site-specific research to understand climate change's impact on ecosystem structure and function. Climate-driven changes affect multiple components of forest ecosystems, including hydrologic variables, phenology, and plant community composition.
Researchers used housing sales data to estimate how much home buyers are willing to pay for scenic vistas, outdoor recreation, and neighborhood tree cover. In Dakota County, home buyers were willing to pay $200-500 more per 10 percent increase in tree cover.
A study found that natural regeneration accounts for two-thirds of urban trees, but newly established young trees are less likely to be planted, with rates ranging from 1 in 12 to 1 in 20. The proportion of naturally regenerated trees is higher in grassland or desert regions and decreases in forested areas.
The US Forest Service study found that New Hampshire has the highest percent tree cover (89%) and Connecticut has the highest urban tree cover (67%). Urban forestry is essential for sustaining urban forests, which provide environmental benefits such as air pollution reduction and heat island mitigation.
The Northern Forests Futures Project reports a 28% increase in forest coverage in the northern US, benefiting from carbon emissions collection and forestry jobs. However, threats to forests in the coming decades could undermine these gains due to invasive plants and diseases.
A study by the USDA Forest Service found that tree cover in US cities is declining at a rate of 4 million trees per year, mainly due to impervious cover and natural disasters. The greatest losses were seen in New Orleans, Houston, and Albuquerque, highlighting the need for comprehensive tree planting programs.
A study published in Nature found that forests are warmer than open areas north of 45 degrees latitude due to higher nighttime temperatures and sunlight absorption, but cooler south of 35 degrees latitude. Forests also have climatic benefits for maintaining or increasing forest cover in southern latitudes.
The US Forest Service's Northern Research Station is part of an international team sequencing 1,000 fungal genomes as part of the DOE's Community Sequencing Program. This project aims to create an encyclopedia of all fungi, which will help researchers understand their roles in ecosystems and develop new products.
A recent study by the USDA Forest Service estimates that non-native forest insects, such as the emerald ash borer and Asian longhorned beetle, are causing significant economic damage to urban trees. The study reveals that homeowners and local governments are bearing the greatest share of costs associated with these insects.