Treesearch

Research on residents’ attitudes toward tourism suggests an exchange relationship between perceived tourism impact and support among residents. However, there is limited knowledge about the cognitive processes through which such a relationship occurs. This study demonstrates the potential utility of integrating cognitive appraisal and social exchange theories to explain the cognitive process linking perceived tourism impact, quality of life, and residents’ support for tourism. We used a survey of residents of Klamath and Linn Counties in the state of Oregon, United States, to obtain data...

The USDA Forest Service has long worked with international partners. In that tradition, the Forest Service and Mpingo Conservation & Development Initiative (MCDI) launched a partnership to support community forestry in Tanzania. Starting in 2017, Susan Charnley and Greg Frey, researchers with the Forest Service’s Pacific Northwest Research Station and Southern Research Station, respectively, built on that partnership through a research collaboration with MCDI. They investigated factors that contribute to financially viable community forests. They also assessed whether Forest Stewardship...

Lowland conifer forests dominated by black spruce (Picea mariana) and tamarack (Larix laricina) typically occur in peatlands in the boreal North American forest with near-surface water tables throughout the year. These forests are ecologically and economically important resources that may be impacted by climate change. However, information characterizing effects of forest disturbance, such as even-aged harvest on water table dynamics is needed to evaluate which forest tree species cover types are most hydrologically susceptible to even-aged harvest and changes in precipitation. We used a...

Background: The Spanish region of Galicia is one of the most fire-prone areas in Europe. Most wildfires are directly or indirectly related to human activities, suggesting that socioeconomic factors likely can inform wildfire management. Socioeconomic factors, for example, could help explain the causes and distribution of wildfires spatially and temporally within the region. We sought to examine how socioeconomic and biophysical variables and their fluctuations over time (2000–2015) might influence wildfire ignitions and hectares burned in Galicia using municipality-level data describing...

Concerned about air quality in southcentral Seattle’s Duwamish Valley, community leaders collaborated with USDA Forest Service Pacific Northwest (PNW) Research Station to implement a study similar to one in Portland, Oregon, in 2015 that found that urban tree moss indicated the presence of airborne toxic metals.Together, PNW Research Station scientists and community leaders designed a study that not only collected moss samples from this heavily polluted area but also engaged 55 community members, including 25 members of the Duwamish Valley Youth Corps, to do so. The youth corps members...

The eruption of Mount St. Helens in 1980 resulted in a cataclysmic restructuring of its surrounding landscapes. The Pumice Plain is one of these landscapes, where tree species such as Sitka willow (Salix sitchensis) and their dependent communities have been established along newly-formed streams. Thus, the study of these dependent communities provides a unique and rare opportunity to investigate factors influencing metacommunity assembly during true primary succession. We analyzed the influence of landscape connectivity on metacommunity assembly through a novel application of circuit...

Most studies evaluating effects of biochar on soil properties and plant responses have focused on agricultural soils, with limited focus on forested settings. There is increasing interest in applying biochar in forests because of the perceived benefits to soils and productivity, and because biochar could be produced from large quantities of residual woody biomass that is typically unmerchantable due to its size or quality. To test if findings from agricultural soils are applicable to forest soils, we applied biochars created from black ash or balsam fir woody feedstock pyrolyzed at 350 °C...

Invasive annual grasses are a growing global concern because they facilitate larger and more frequent fires in historically fuel-limited ecosystems. Forests of the western United States have remained relatively resistant to invasion by annual grasses and their subsequent impacts. However, where forests are adjacent to invaded areas, increased fire spread across ecotones could alter fire behavior and ecosystem resilience. In the Inland Northwest, USA, recent invasion by the annual grass ventenata (Ventenata dubia) has increased fine fuel loads and continuity in nonforest patches embedded...