Treesearch

Many peatlands have been drained for anthropogenic purposes, and there is high interest in restoring them for their carbon storage ability and critical habitat. Peatlands hold a disproportionate amount of global soil carbon, making peatland restoration a promising approach for mitigating carbon emissions. In this study, site factors were investigated that affect peat carbon dioxide flux at Cold Spring fen in Minnesota, which is undergoing restoration. Peat carbon dioxide flux and water table depth were monitored throughout the growing season at two locations previously disturbed to...

Aim: Many tree species distribution models use black-box machine learning techniques that often neglect interpretative aspects and instead focus mainly on maximizing predictive accuracy. In this study, we outline an interpretative modelling framework to gain better ecological insights while mapping abundance patterns of six North American species. Location: Continental United States and Canada. Methods: We develop an innovative procedure using regression trees by stabilizing variance, and mapping dominant rules which we term 'optimized regression tree bagging for interpretation and...

The limestone bluff cedar–pine forest is a rare upland natural community that is threatened by development and invasion by exotic species. Furthermore, the sensitivity of this forest-type to changes in climate and pollution exposure is unknown. We collected xylem increment cores from 4 conifer species (Thuja occidentalis [Northern White Cedar], Juniperus virginiana [Eastern Red Cedar], Pinus strobus [Eastern White Pine], and Tsuga canadensis [Eastern Hemlock]) and 4 hardwood species (Quercus rubrum [Northern Red Oak], Quercus alba [White Oak], Fagus grandifolia [American Beech], and...

Families constitute the largest forest ownership group in the United States. Previous research has suggested that absenteeism influences how families perceive, use, and manage their land. The extent to which prior findings are sensitive to different definitions of absenteeism is unclear, however. In this paper, the distance between landowners' residences and their forest land was calculated in order to compare different measures of absenteeism in terms of their statistical relationships with management and engagement activities. Data from the National Woodland Owner Survey were used to...

Forests deliver contrasting ecosystem services in relation to water, both provisioning it through filtration and recharge, and consuming it through evapotranspiration. Understanding forest evapotranspiration is critical for landscapes managed in part for the social benefits of their water provisioning ecosystem services. We used the flux disaggregation algorithm for the Atmosphere-Land Exchange Inverse model (DisALEXI) with remotely sensed data to characterize landscape-scale evapotranspiration at 30-m spatial resolution over the forested coastal plain Pinelands of southern New Jersey,...

Over 65 million years ago, the planet experienced a cooling period, and as a result, temperate forests sprang up around the globe. Today, temperate forests blanket approximately 10 million square kilometers (3.1 million square miles) of the Earth's surface and are the most managed forest type worldwide. In the face of climate change, these forests have emerged as a critical player in absorbing carbon from the atmosphere.

What are the market conditons for woodworkers involved in construction-based sectors and how do they plan to improve their capabilities? For perspective, the total value of private construction (residential and nonresidential) put in place in the United States was nearly $1.5 trillion ($1,435 billion) in 2022, up 12.1% from 2021. Spending increased in all residential categories: 4.4% for single family, 4.4% for multi-family, and 31.4% for residential improvements. Spending on nonresidential construction also increased by 9.8%. However, the increases in private construction spending...

The problem of biological invasions is largely an inadvertent result of globalization. Global trade and human travel have resulted in the accidental movement of organisms across geographic barriers such as oceans and major mountain ranges that previously compartmentalized the world's flora and fauna through millions of years of evolution. Most non-native organisms established outside their range are inconsequential, with little noticeable impact on invaded ecosystems. However, a fraction of non-native species become extremely abundant and/or greatly alter ecosystem processes and properties...

The actions urban forest managers, ecologists, and community stewards undertake to review and comment on new development plans and to plant, remove, and otherwise manage trees in cities have implications for local wildlife habitat and biodiversity. Far too often, these influences do not receive enough attention unless threatened and endangered species are present, or if residents make it an issue. This article puts a spotlight on the impacts of urbanization on ecological communities and biodiversity, and how urban and community plans, policies, and actions can make a difference in improving...

Statistical confidence in estimates of timber volume, carbon storage, and other forest attributes depends, in part, on the uncertainty in field measurements. Surprisingly, measurement uncertainty is rarely reported, even though national forest inventories routinely repeat field measurements for quality assurance. We compared measurements made by field crews and quality assurance crews in the Forest Inventory and Analysis program of the U.S. Forest Service, using data from 2790 plots and 51 740 trees and saplings across the 24 states of the Northern Region.We characterized uncertainty in 12...