We detected Heartland virus (HRTV) in lone star nymphs collected in 2018 in northern Alabama, USA. Real-time reverse transcription PCR selective for the small segment of the HRTV genome and confirmatory sequencing of positive samples showed high identity with HRTV strains sequenced from Tennessee…
Keywords: HRTV, Heartland virus
Source: Emerging Infectious Diseases
Water temperature influences virtually every biotic component of stream ecosystems. Not surprisingly, increased summer temperatures in streams with coldwater species of fish such as salmon and trout have become a topic of concern regionally and internationally. Although stream temperature has been…
Source: Science Findings 73. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p
The application of principal component analysis for interpretation of multivariate data sets is reviewed with emphasis on (1) reduction of the number of variables, (2) ordination of variables, and (3) applications in conjunction with multiple regression.
Keywords: multivariate analysis, eigenvector, principal component, ordination, orthogonal regression
Source: General Technical Report NC-17. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Provides a guide for managing lowland hardwoods in the Lake States. Gives both even-age and uneven-age guides for black ash.
Keywords: Fraxinus nigra, black ash, lowland hardwoods, swamp hardwoods, black ash-American elm-red maple type, management
Source: General Technical Report NC-115. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Although fuel reduction treatments are widespread, there is great variability and uncertainty in the cost of conducting treatments. Researchers from the Rocky Mountain Research Station, USDA Forest Service, have developed a model for estimating the per-acre cost for mechanical fuel reduction…
Keywords: fuels planning, fuels management, fire, fuel reduction treatments
Source: Res. Note RMRS-RN-20-9. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 2 p.
Five randomly assigned treatments were used to quantify effects of adding varying numbers of red alder (Alnus rubra Bong.) or nitrogen (N) fertilization on growth of a 10-year-old conifer plantation at a medium quality site in the western Washington Cascade Range. Zero, 20, 40, and 80…
Keywords: Mixed stands, competition (plant), Douglas-fir, Pseudotsuga menziesii, red alder, Alnus rubra, thinning, nitrogen fertilization, volume growth
Source: Res. Pap. PNW-RP-565. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 28 p
The impacts of stocking, structure, and cutting cycle on basal area, cubic foot volume, board foot volume, and diameter growth are considered. Recommendations are provided for maximum growth in uneven-aged sugar maple stands.
Keywords: Acer saccharum, sugar maple, uneven-age management, Lake States, stocking, stand structure, cutting cycle
Source: Research Paper NC-199. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Cubic-foot volume equations are presented for sugar maple, basswood, yellow birch, and white ash. Conversion factors for board-foot and cordwood volumes are also provided. The equations are useful for even-aged, second-growth hardwoods in northeastern Wisconsin.
Keywords: sugar maple, yellow birch, American basswood, white ash, cubic volume, board-foot, cordwood
Source: Research Paper NC-222. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Buffers along streams cover a tremendous proportion of the land base in the forested systems of the western Pacific Northwest. These buffers were designated primarily to conserve and restore habitat for salmon and trout, but conservation of habitat for a number of other organisms also has been…
Keywords: Stream buffers, amphibians, riparian management, Olympic Peninsula
Source: Science Findings. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. May (53): 1-5
Rural areas of the Pacific Northwest experienced a dramatic growth in population during the late 1980s to early 1990s. This growth was fueled by both push and pull factors, including environmental and natural resource based amenities. Such growth has not only stressed the capacity of rural counties…
Keywords: Human migration, population growth, natural resource management, environmental amenities, social and environmental change, population dynamics
Source: Gen. Tech. Rep. PNW-GTR-580. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 19 p