Treesearch

Many small mammal populations exhibit dramatic annual fluctuations, with abundance sometimes varying by orders of magnitude across years. However, there remains much debate about the factors that drive changes in abundance. Long-term datasets provide important opportunities to further investigate these phenomena. Using 30 yr of data from a study at Bartlett Experimental Forest in north-central New Hampshire, USA, we compare the relative effects of pulsed food resources (beech mast), forest structure, and weather on the population dynamics of 5 rodents and 4 shrew species. We estimated...

Anoplophora glabripennis Motschulsky is an invasive woodboring beetle in North America and Europe that threatens a broad range of tree genera. Eradication is a costly and time-consuming process that requires visual surveys to detect beetle damage on host trees. Knowing the distribution of beetle damage within trees could directly benefit survey efforts by focusing surveys on high-risk areas and indirectly by identifying habitat factors that structure beetle populations. In the A. glabripennis infestation in South Carolina, we identified an isolated and actively growing subpopulation on an...

In the national forest inventory of the USA, there is an ongoing issue with sample plots that are either completely or partially unmeasured due to access issues such as hazardous conditions or lack of permission. The nonrandom nature of the nonresponse in the general population potentially creates a bias in the sample and resulting estimations. A potential mitigation option is the use of response homogeneity groups in combination with ratio-to-size estimators. This paper presents an extension of this approach where per-unit area estimates commonly useful to practitioners, e.g. number of...

Background: Fires can alter soil properties via downward heat transfer. Numerous studies have examined effects of wildfires and prescribed burns on soils, yet knowledge of the soil temperatures and durations reached is limited. This can lead to erroneous assumptions regarding fire impacts, especially when laboratory heating results are extrapolated to field conditions.Aims and methods: We compiled new and published data on maximum temperatures and heating durations for mineral soils during wildfires and prescribed burns in forests, shrublands and grasslands around the globe, and compared...

In some seepage lakes, acid neutralising capacity (ANC) is regulated by precipitation chemistry and in‐lake biogeochemical processes with little influence from groundwater and catchment runoff. However, additional environmental contexts, for example, landscape position and changing precipitation dynamics, may also contribute to variability in ANC across lakes over time. We used a mixed effects model to assess the influence of changing precipitation patterns and the chemistry of hydrologic inputs on ANC in seven northern Wisconsin, USA seepage lakes from 1984 to 2018. We observed differentia...

In seasonally snow‐covered ecosystems, changing temperatures and snowpack dynamics under climate change have increased the occurrence and duration of soil temperatures that support microbial activity during plant dormancy. During these periods of microbial activity without plant activity (i.e., plant‐microbe asynchronies), soil nutrients that build up are vulnerable to leaching loss, with potentially important consequences for ecosystem productivity. Furthermore, asynchronies likely do not occur uniformly in space; rather, their occurrence may be modulated by subsurface characteristics....

The U.S. Department of Agriculture (USDA), Forest Service, Forest Inventory and Analysis (FIA) program provides this resource update yearly as an overview of forest resources in West Virginia. These estimates are derived from field data collected across a systematic network of fixed-radius forest monitoring plots located on both public and private land. New updates are provided annually as a subset of plots within the State are remeasured. Each year, field crews visit and measure a subset of all FIA plots across the entire State (the size of the subset varies by State and year). Combining...

The Urban National Landowner Survey (UNLS) is a component of the National Woodland Owner Survey (NWOS) which is part of the U.S. Department of Agriculture (USDA), Forest Service, Forest Inventory and Analysis (FIA) program. The UNLS is charged with collecting information on the property owners and managers in the urban areas across the United States. Information is collected on ownership and land characteristics, property management activities, tree-related concerns on their property, participation in programs and organizations, information sources, opinions on neighborhood and community...

The Urban National Landowners Survey (UNLS) provides information about who owns the trees across America’s urban areas, why they own them, what they have done with them in the past, and what they plan to do with them in the future. The first UNLS was completed for Baltimore, MD, in 2018 and provides estimates for all landowners in the city. Most people in Baltimore valued trees on their property and in their neighborhood evidenced by the following: they agreed that trees make the neighborhood a better place to live, that tree health should be considered during construction, and that good...

In sectors based on renewable resources, foresight studies have often been macro‐scale, quantitative outlook studies. As a result, in the complex operating environment of the forest bioeconomy, the organizations and professionals of the emerging bioeconomic sector have not been able to fully utilize futures information in their decision‐making processes. This study sought to find solutions to this issue by utilizing a nested business environment framework (NEST framework) in signal interpretation as part of piloting interactive horizon scanning of the forest bioeconomy. In interaction with...