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Displaying 217 - 228 of 439

Empirical harvest models and their use in regional business-as-usual scenarios of timber supply and carbon stock development

Journal Articles & Books
Diciembre, 2012

Harvest activity directly impacts timber supply, forest conditions, and carbon stock. Forecasts of the harvest activity have traditionally relied on the assumption that harvest is carried out according to forest management guidelines or to maximize forest value. However, these rules are, in practice, seldom applied systematically, which may result in large discrepancies between predicted and actual harvest in short-term forecasts.

role of prescribed burn associations in the application of prescribed fires in rangeland ecosystems

Journal Articles & Books
Diciembre, 2014

Although the ecological thresholds for restoring fire-adapted ecosystems back to their original state are better understood than in the past, the key hurdle to reintroducing historical fire regimes at landscape scales is a social one. The objectives of this study were to assess the human dimensions of prescribed fire and evaluate the role of Prescribed Burn Associations (PBAs) in promoting the adoption of prescribed fire at the landscape scale. The study was conducted in 12 counties in Texas, consisting of clusters of four counties in each of three ecoregions.

Landowners' Participation in Biodiversity Conservation Examined through the Value-Belief-Norm Theory

Journal Articles & Books
Diciembre, 2013

Landowners' choice of management practices will directly affect the conservation of biodiversity in large-scale productive landscapes such as forests and agricultural areas. Using the value-belief-norm theory, this study identifies the extent to which landowners differ regarding the psychological variables antecedent of a moral obligation to protect local biodiversity after participation in conservation programmes. A survey was carried out among 280 landowners who had to varying degrees participated in either voluntary forest preservation or wetland restoration.

role of trust in restoration success: public engagement and temporal and spatial scale in a complex social‐ecological system

Journal Articles & Books
Diciembre, 2015

The social dimensions of river restoration are not well understood especially in the context of large‐scale restoration projects embedded in a complex social‐ecological system. This study used in‐depth interviews with diverse stakeholders to examine perceptions of restoration success on the Clark Fork River Superfund project in Western Montana. Trust emerged as critical to restoration success and was influenced by public engagement, and by spatial and temporal scale.

Patterns and drivers of fuelwood collection and tree planting in a Middle Hill watershed of Nepal

Journal Articles & Books
Diciembre, 2011
Nepal

The majority of residents in the rural Middle Hills of Nepal use fuelwood from public and private sources as their primary energy source. This study investigated fuelwood availability in accessed forests, amount of fuelwood collected, preferred tree species for fuelwood, contribution of public and private sources to total fuelwood consumption, and investment in tree planting on agricultural land. Fuelwood availability declined in the decades prior to 1990, but stabilized by 1990. Fuelwood from fifty-three species was collected from forests.

Density of Large Predators on Commercial Farmland in Ghanzi, Botswana

Journal Articles & Books
Diciembre, 2012
Botswana

Accurate estimates of predator densities are important for the conservation management of large predator populations. Predator densities outside of protected areas are often understudied and management decisions are based on assumptions of predator numbers. This study conducted three spoor surveys on commercial farmland in Botswana to estimate large predator densities. Brown hyaenas (Hyaena brunnea) were found to occur evenly across both cattle and game farms at higher densities than previously assumed.

Benefits of wildlife-based land uses on private lands in Namibia and limitations affecting their development

Journal Articles & Books
Diciembre, 2013
Namibia
África

Legislative changes during the 1960s–1970s granted user rights over wildlife to landowners in southern Africa, resulting in a shift from livestock farming to wildlife-based land uses. Few comprehensive assessments of such land uses on private land in southern Africa have been conducted and the associated benefits are not always acknowledged by politicians. Nonetheless, wildlife-based land uses are growing in prevalence on private land. In Namibia wildlife-based land use occurs over c. 287,000 km².

Valuing local knowledge as a source of expert data: Farmer engagement and the design of decision support systems

Journal Articles & Books
Diciembre, 2012

Engagement with farmers and landowners is often undertaken by the research community to obtain information relating to typical land, livestock and enterprise management and generally centres on responses to questionnaire surveys. Farmers and land managers are constituted as expert observers of ground-level processes and provide diverse information on farming practices, enterprise economics and underpinning attitudes towards risk.

Designing mosaic landscapes for Black Grouse Tetrao tetrix using multi‐scaled models

Journal Articles & Books
Diciembre, 2013

With increasing pressures on land for human use, it is important to identify the habitat requirements of key species, not just in terms of a correlation with a given habitat feature, but also the relationship between species presence and its coverage, proximity to other habitat types, and importance at different spatial scales. We used maximum entropy to estimate the optimal proportions of 18 habitat types, plus elevation and habitat richness associated with the presence of leks of Black Grouse Tetrao tetrix within an 800‐km² study area in Perthshire, Scotland.

Effective Use of Limited Information: Do Bid Maximums Reduce Procurement Cost in Asymmetric Auctions

Journal Articles & Books
Diciembre, 2010

Conservation programs faced with limited budgets often use a competitive enrollment mechanism. Goals of enrollment might include minimizing program expenditures, encouraging broad participation, and inducing adoption of enhanced environmental practices. We use experimental methods to evaluate an auction mechanism that incorporates bid maximums and quality adjustments. We examine this mechanism’s performance characteristics when opportunity costs are heterogeneous across potential participants, and when costs are only approximately known by the purchaser.