Treesearch

Knowledge of the geographical distribution for many primary burrowing crayfshes is ofen limited to information presented in species descriptions or feld notes associated with epigean crayfsh surveys. Cambarus strigosus Hobbs, 1981, a rare primary burrowing crayfish, was collected as part of a survey of the Sumter National Forest, South Carolina (SC), USA. Prior to this discovery, C. strigosus appeared to be endemic to mid-reaches of the Broad River Drainage in Georgia (GA). We conducted additional feld sampling in SC and GA and used mitochondrial DNA (mtDNA) to compare the relative genetic...

Global use of renewable energy has risen over the past few decades because of international energy policy changes, new legislation, and an effort to create a more sustainable energy source for a rapidly growing global population. One of these renewable energy sources is biofuels, specifically in the form of wood pellets created from wood chips. Wood pellet manufacturers in the southeastern United States must adhere to rigid quality-control standards of the European markets where their pellets are shipped and consumed. Thus, there is a need to improve our understanding of the factors that...

This report traces the flow of Idaho’s 2019 timber harvest through the primary wood products industry and characterizes the structure, condition, and economic impacts of Idaho’s forest products sector. Historical changes in the forest products industry, as well as trends in timber harvest, production, sawmill capacity, mill residuals, and sales value, are presented. Employment and worker earnings in the State’s primary and secondary forest products industries are also discussed. Periodic survey data collected from the forest products industry provide detailed information on Idaho’s timber...

This report traces the flow of timber harvested in Utah during calendar year 2020; describes the composition and operations of the state’s primary forest products industry; and quantifies volumes and uses of wood fiber. Recent wood products industry changes are discussed, as well as trends in timber harvest, production, and sales of primary wood products.

While there has been extensive research on resident sentiment towards tourism, few have explored the uniqueness of gateway communities and their relationship to the Protected Areas (PA) surrounding them. This study explores how resident trust of PA managers and support for PAs surrounding their community can spillover to explain additional variance in resident support or opposition to tourism. To test this, traditional antecedents to resident support for tourism, like psychological, social, and political empowerment and the economic benefits from tourism, were modeled independently and in...

Managers of designated wilderness in the United States are challenged by the complex issue of how to address existing dams and water storage. Dams can exist in wilderness, as they are considered a special provision that can provide a variety of benefits to society; however, dams are also considered a potential threat to wilderness character. We review the issue of dams in wilderness, and then present the results from a study in the Rattlesnake Wilderness in Montana where visitor opinions around dam removal or maintenance were assessed. Our aim through this present research is to examine...

Trees growing outside their native geographic ranges often exhibit exceptional growth and survival due in part to the lack of co-evolved natural enemies that may limit their spread and suppress population growth. While most non-native trees tend to accumulate natural enemies over time, it remains uncertain which host and insect characteristics affect these novel associations and whether novel associations follow patterns of assembly similar to those of native hosts. Here, we used a dataset of insect–host tree associations in Europe to model which native insect species are paired with which...

Macrochelys temminckii (alligator snapping turtle) is an aquatic turtle endemic to the southeastern United States that was proposed for listing under the Endangered Species Act in 2021. In the present study we analyzed total mercury (THg) concentrations in skeletal muscle, tail clips, and nail tissue of 93 M. temminckii sampled from 14 waterbodies in eastern Texas (USA). Our objectives were to assess (1) the degree of correlation between internal tissue (skeletal muscle and tail clip samples) and keratin (nail samples), (2) the influence of ecological factors (turtle size and waterbody/samp...

This report traces the flow of timber harvested in Alaska during calendar year 2019, describes the composition and operations of the state’s primary forest products industry, and quantifies volumes and uses of wood fiber. Historical wood products industry changes are discussed, as well as trends in timber harvest, production, log exports, sales of primary wood products, employment, and emerging issues for Alaska’s forest industry.

Satellite, radar, and strategically placed Remote Automated Weather Stations (RAWS) are a few of the many technologies used to gather data and predict weather. Yet, some weather events are still unpredictable. A morning forecast for a chance of storms in the afternoon can transform into a major thunderstorm in the middle of an alpine hike.