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21 results for “Timber harvesting”
Timber Harvesting Field Study in Western Massachusetts 2004-2005
Forest harvesting is one of the most significant disturbances affecting forest plant composition and structure in Western Massachusetts, yet few studies have quantified the effects of harvesting in this region. Massachusetts requires all commercial harvest operations above 87 m3 to file a Forest Cutting Plan (FCP) with the state. We have digitized these FCPs (see McDonald et al. 2006), covering all harvests from 1984 to 2003. Our study area is Massachusetts west of the coastal basin, as defined by Motts and O’Brian (1981). We selected 126 sites for sampling. Two-thirds of the sites (89) were harvested once between 1984 and 2003, and these were selected randomly from the larger FCP database. The remaining one-third of the sites (37) were control sites selected randomly from all unharvested forest in the study area. The boundaries for our field surveys were those filed with the FCP for harvested sites, and were circular for control sites, proportional in size to the mean FCP in the physiographic region (Motts and O'Brien 1981): Connecticut River Valley (10.7 ha), Central Upland (11.3 ha), Berkshire Valley and Taconic Mountains (12.6 ha), and the Western Upland (15.9 ha). Note that our sampled sites were well-dispersed over the study area, and encompassed the variety of past agricultural land-use.
Timber Harvesting Study in North Quabbin Region of Central Massachusetts 1984-2001
Although the northeastern U.S. includes extensive areas of aggrading forest, uncertainty regarding the intensity and pattern of forest harvesting hampers an understanding of important ecological processes and characteristics such as carbon and nitrogen storage, habitat quality, and forest dynamics, and impedes regional conservation and management planning. Due to the complex ownership pattern dominated by thousands of non-industrial private forest (NIPF) owners and the difficulty of detecting selective logging using remote sensing, details of the harvesting regime remain largely unknown to the scientific and policy communities. To examine the value of statewide regulatory data for Massachusetts as a unique source of this critical information, we analyzed 17 years of timber harvest data gathered for regulatory purposes for a 168,000-ha forested landscape in Massachusetts that is the focus of concerted conservation planning and intensive study of landscape and ecosystem pattern and process. The North Quabbin Region is heavily wooded with a complicated ownership pattern dominated by over 2,500 NIPF owners, three state agencies, and diverse conservation and municipal holdings. The extent and intensity of harvesting were surprising, with an annual disturbance rate of 1.5% and a mean intensity of 44.7 m3 ha-1 (approximately one-fourth of average stand volume). The predominant form of harvesting was selective removal of commercially valuable tree sizes, grades and species (e.g., Quercus rubra and Pinus strobus). The spatial pattern of logging was random with regards to major physical, biological, or cultural factors. However, logging was strongly related to landowner class. NIPF owners control 60% of the forest area and were responsible for 64.1% of harvest area, but the highest logging intensity (volume per area harvested; 69.3 m3 ha-1) among major landowners was conducted by the state agency responsible for managing southern New England's largest conservation property, t
Massachusetts Timber Harvesting Study 1984-2003
Sustainability of the forest at a regional scale in landscapes dominated by non-industrial private forest (NIPF) ownership depends on the often-independent actions and behaviors of thousands of private families and individuals. These NIPF lands comprise the dominant forest ownership in many parts of the United States, and represent an important part of the greater forest landscape matrix even in parts of the region where industrial and/or public lands dominate. In northeastern states, NIPF lands can represent 75% or more of total forest area. While forest landowner attitudinal survey work in the past several decades has explored reasons for ownership, motivations, and perspectives on traditional management (e.g., do you intend to harvest in the next 10 years?), little if any study has focused on attitudes and, importantly, documented behaviors related to sustainability on their lands. Some landowner attitudes pertaining to the notion of sustainability can be inferred from earlier work (e.g., documented interest in wildlife habitat and nature, aesthetics, and privacy), but these do not directly link to sustainability or timber productivity on their own lands. As the urban-rural interface expands from metropolitan centers, though this wooded landscape may appear to be forested from the air, it no longer sustains a number of benefits upon which society has grown to depend. In particular, timber harvesting declines as a viable and sustainable land use activity. We seek to: 1. Study the decision-making process, priorities, and behaviors of different types of NIPF owners, in terms of sustainable harvesting, and sale/ development; 2. Use landscape-scale spatial data and associated demographic data to assess the extent to which such landscapes can remain sustainable producers of wood products in the face of expanding urban/ suburban influence; and 3. study sites that have sustained harvests and document the successional trajectory, in an effort to estimate the future compos
Relevance of criteria and indicators for sustainable timber harvesting
<p>For well-founded decisions in sustainable timber harvesting, it is important to know the preferences of the different stakeholders. The concept of sustainable timber harvesting is to incorporate economic, social, and environmental criteria in the selection, execution and assessment of harvesting operations. In a previous study, 33 criteria were identified by forest experts as relevant for evaluating sustainability. To assess the importance of these criteria, an online survey was conducted among Austrian stakeholders between April and May 2023, in which 610 people were invited to participate and which resulted in a response rate of 47%.</p> <p>The survey participants were primarily male (94%), with an average age of 47 and an average of 20 years of work experience. The key criteria for sustainable harvesting that were unanimously mentioned by the stakeholders on the basis of a Likert scale, included occupational hazards, residual stand damage, loss of wood quality due to poor work performance, biomass regeneration, water erosion, noise exposure, soil rutting, physical workload, working conditions, and vibration exposure. These identified preferences will inform the development of a decision support model for sustainable timber harvesting using these criteria as input parameters.</p>
Sediment Budget for Timber Harvest in a California Coastal Watershed
<p>Dataset for Publication: Sediment Budget for Timber Harvest in a California Coastal Watershed</p> <p> </p>
Data repository for Global wood harvest is sufficient for climate-friendly transitions to timber cities
<p><strong>Supplementary Information S2</strong></p> <p><strong>Global wood harvest is sufficient for climate-friendly transitions to timber cities | <a href="https://doi.org/10.1038/s41893-025-01605-w" target="_blank" rel="noopener">Nature Sustainability</a></strong></p> <p>Alperen Yayla <sup>1,a</sup>; Adam R. Mason <sup>1,b</sup>; Junyang Wang <sup>1,2,c</sup>; Stijn van Ewijk <sup>3,d</sup>; Rupert J. Myers <sup>1,e,*</sup></p> <p><sup>1</sup> Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, United Kingdom</p> <p><sup>2</sup> Department of Mathematics, Imperial College London, London, SW7 2AZ, United Kingdom</p> <p><sup>3</sup> Department of Civil, Environmental & Geomatic Engineering, University College London, London, WC1E 6BT, United Kingdom</p> <p>* Corresponding author</p> <p><sup>a </sup><a href="mailto:a.yayla22@imperial.ac.uk">a.yayla22@imperial.ac.uk</a>, <sup>b</sup> <a href="mailto:a.mason19@imperial.ac.uk">a.mason19@imperial.ac.uk</a>, <sup>c</sup> <a href="mailto:junyang.wang21@imperial.ac.uk">junyang.wang21@imperial.ac.uk</a>, <sup>d</sup> <a href="mailto:s.vanewijk@ucl.ac.uk">s.vanewijk@ucl.ac.uk</a>, <sup>e</sup> <a href="mailto:r.myers@imperial.ac.uk">r.myers@imperial.ac.uk</a>.</p>
Local controls modify the effects of timber harvesting on surface soil carbon and nitrogen dynamics
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Data from: A cross-continental comparison of plant and beetle responses to retention of forest patches during timber harvest
Timber harvest can adversely affect forest biota. Recent research and application suggest that retention of mature forest elements ('retention forestry'), including unharvested patches (or 'aggregates') within larger harvested units, can benefit biodiversity compared to clearcutting. However, it is unclear whether these benefits can be generalized among the diverse taxa and biomes in which retention forestry is practiced. Lack of comparability in methods for sampling and analysing responses to timber harvest and edge creation presents a challenge to synthesis. We used a consistent methodology (similarly spaced plots or traps along transects) to investigate responses of vascular plants and ground-active beetles to aggregated retention at replicate sites in each of four temperate and boreal forest types on three continents: Douglas-fir forests in Washington, USA; aspen forests in Minnesota, USA; spruce forests in Sweden; and wet eucalypt forests in Tasmania, Australia. We assessed (i) differences in local (plot-scale) species richness and composition between mature (intact) and regenerating (previously harvested) forest; (ii) the lifeboating function of aggregates (capacity to retain species of unharvested forest); and whether intact forests and aggregates (iii) are susceptible to edge effects and (iv) influence the adjacent regenerating forest. Intact and harvested forests differed in composition but not richness of plants and beetles. The magnitude of this difference was generally similar among regions, but there was considerable heterogeneity of composition within and among replicate sites. Aggregates within harvest units were effective at lifeboating for both plant and beetle communities. Edge effects were uncommon even within the aggregates. In contrast, effects of forest influence on adjacent harvested areas were common and as strong for aggregates as for larger blocks of intact forest. Our results provide strong support for the widespread application of aggregated retention in boreal and temperate forests. The consistency of pattern in four very different regions of the world suggests that, for forest plants and beetles, responses to aggregated retention are likely to apply more widely. Our results suggest that through strategic placement of aggregates, it is possible to maintain the natural heterogeneity and biodiversity of mature forests managed for multiple objectives.
Data from: Incorporating uncertainty into forest management planning: timber harvest, wildfire and climate change in the boreal forest
In an effort to ensure the sustainability of their forests, boreal forest managers often use forest planning models to make future projections of timber supply and other key services, such as habitat for wildlife. Projecting the fate of these services has proven to be challenging, however, as major uncertainties exist regarding the principal drivers of boreal ecosystem dynamics, including the future spatial and temporal distribution of wildfire and timber harvesting. Existing forest planning models are not well suited to dealing with this uncertainty because they produce deterministic projections based on central tendencies of these drivers. Here we present a new approach for incorporating uncertainty into forest management planning, which we demonstrate using two landscapes in the Canadian boreal forest. Our approach takes the assumptions contained within the latest forest management plans for each of these landscapes, including parameterizations of their deterministic forest planning models, and converts these assumptions into equivalent parameterizations of a stochastic, spatially-explicit state-and-transition simulation model (STSM). We then use Monte Carlo simulations with the STSM to "stress-test" the forest management plan with respect to a range of possible future uncertainties, including uncertainties in future levels and patterns of wildfire and timber harvest, along with the possible changes in wildfire that might result from future climate change. Our analysis demonstrates the importance of incorporating stochastic variability into projections of future ecosystem condition. The STSM projections that acknowledged variability in wildfire and timber harvest differed from the deterministic forest planning model projections that were based solely on mean values. Our analysis also suggests that there is an increased risk of shortfalls in timber harvest, for both boreal landscapes, associated with future projections for changes in wildfire due to climate change, and that management strategies aimed at reducing the future level of timber harvest offer an opportunity to mitigate these risks. We believe our approach provides a new risk-based framework for incorporating uncertainty into forest management, including the effects of climate change.
Data from: Conservation versus livelihoods: spatial management of non-timber forest product harvests in a two-dimensional model
Areas of high biodiversity often coincide with communities living in extreme poverty. As a livelihood support, these communities often harvest wild products from the environment. But harvest activities can have negative impacts on fragile and globally important ecosystems. This paper examines trade-offs in ecological protection and community welfare from the harvest of wild products. With a novel model and empirical evidence, I show that management of harvest activity does not always resolve these trade-offs. In a model of continuous harvests in a two-dimensional landscape, managed harvest activity improves welfare, but is uniformly bad for other ecosystem services that are sensitive to the presence (as opposed to the intensity) of human activity. Empirical results from a unique dataset of mushroom harvesters in Yunnan, China suggest more experienced, poorer, and more vulnerable individuals tend to rely on more distant harvests. Thus, policies that limit the extent of forest travel, such as protected areas, may protect fragile ecosystems but can have a disproportionately negative effect on those most vulnerable.
An evidence map of research assessing the effects of timber harvesting on water quality, biotic and biodiversity indicators in running waters: Data and R code
<p>These are the data and R code that accompany the Forest Ecology and Management publication titled "An evidence map of research assessing the effects of timber harvesting on water quality, biotic and biodiversity indicators in running waters". </p>
Harvest of timber from 20 coniferous in germplasm movement zones / Cosecha de madera de 20 coníferas en zonas de movimiento de germoplasma
<p>Raw data from the Revista Mexicana de Ciencias Forestales paper: "Harvest of timber from 20 coniferous in germplasm movement zones / Cosecha de madera de 20 coníferas en zonas de movimiento de germoplasma" Revista Mexicana de Ciencias Forestales 2021 12(66):122-140. doi:10.29298/rmcf.v12i66.829</p> <p> </p> <p>The database correspond to timber volumen of 20 Mexican conifers from 2013 to 2017, that were analyzed.</p>
A trait-based approach to both forestry and timber building can synchronize forest harvest and resilience: Supporting data
<p><strong>Input files</strong> and <strong>trait data </strong>used in the associated paper. They can be used to reproduce the results of the study.</p> <p>The model documentation is freely available at <a href="https://www.landis-ii.org/">https://www.landis-ii.org/</a></p> <p>The LANDIS-II code is distributed under an open source license at <a href="https://github.com/LANDIS-II-Foundation">https://github.com/LANDIS-II-Foundation</a>.</p> <p>If interested in using this dataset for a research study or project, please contact <a href="https://www.marco-mina.com/">P</a><a href="mailto:peter.osborne@mail.mcgill.ca?subject=QUESTION%3A%20A%20trait-based%20approach%20to%20both%20forestry%20and%20timber%20building%20can%20synchronize%20forest%20harvest%20and%20resilience%20%20">eter Osborne</a></p> <p>---------------------</p> <p>ABSTRACT: Along with forest managers, builders are key change agents of forest ecosystems' structure and composition through the specification and use of wood products. New forest management approaches are being advocated to increase the resilience and adaptability of forests to climate change and other natural disturbances. Such approaches call for a diversification of our forests based on species' functional traits that will dramatically change the harvested species composition, volume and output of our forested landscapes. This calls for the wood-building industry to adapt its ways of operating. Accordingly, we expand the evaluation of the ecological resilience of forest ecosystems based on functional diversification to include a trait-based approach to building with wood. This trait-based plant-building framework can illustrate how forecasted forest changes in the coming decades may impact and guide decisions about wood-building practices, policies and specifications. We apply this approach using a fragmented rural landscape in temperate southeastern Canada. We link seven functional groups based on the ecological traits of tree species in the region to a similar functional grouping of building traits to characterize the push and pull of managing forests and wood buildings together. We relied on a process-based forest landscape model to simulate long-term forest dynamics and timber harvesting to evaluate how various novel management approaches will interact with the changing global environment to affect the forest-building relationships. Our results suggest that adopting a whole system, plant-building approach to forests and wood buildings is key to enhancing forest ecological and timber construction industry resilience.</p>
Data from: Incorporating uncertainty into forest management planning: timber harvest, wildfire and climate change in the boreal forest
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Data from: Conservation versus livelihoods: spatial management of non-timber forest product harvests in a two-dimensional model
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Data from: Sustainable harvesting of non-timber forest products based on ecological and economic criteria
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Data from: Evaluating carbon storage, timber harvest, and habitat possibilities for a western Cascades (US) forest landscape
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Data from: Timber harvest and tree size near nests explains variation in nest site occupancy but not productivity in northern goshawks (Accipiter gentilis)
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Data from: A cross-continental comparison of plant and beetle responses to retention of forest patches during timber harvest
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Data from: Ecosystem-scale impacts of non-timber forest product harvesting: effects on soil nutrients
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