3,967 research outputs found
The anatomy of a woodland: stand profile diagrams as an aid to problem-based learning in undergraduate forestry education
Forestry education is poorly served with published examples of teaching and learning methods that enable students to engage actively with the discipline. This is not the case in other professional disciplines, such as the biology, medicine and engineering, where sub-disciplines have emerged and are devoted to the development and evaluation of optimum learning strategies. In this paper we present a short field-based practical that introduces forestry students to forest stand dynamics, applied forest ecology and silviculture. Students measure a series of tree and stand parameters in 2 contrasting forest types. They then analyze and interpret the data to develop their understanding. Reflective practice is built in by setting questions designed to promote enquiry and the self-identification of future avenues for personal development. The project, as described here, was devised for students at the National School of Forestry, England, but the principles could be applied to almost any learning environment. Planning within curriculum teams would be required to identify the appropriate location for this exercise in specific undergraduate programmes
Sustainable forest management
This article presents a case study of sustainable forest management at Thirlmere Reservoir in the Lake District. The interaction between forest and water resources, and the value of the surrounding landscape, makes Thirlmere an excellent location for demonstrating modern approaches in sustainable forestry. Today, forests are managed for a variety of purposes: environmental, economic and social. This case study shows that such management requires a range of geographical understanding, and illustrates the synoptic approach required at A2
Discrete Symmetries in Covariant LQG
We study time-reversal and parity ---on the physical manifold and in internal
space--- in covariant loop gravity. We consider a minor modification of the
Holst action which makes it transform coherently under such transformations.
The classical theory is not affected but the quantum theory is slightly
different. In particular, the simplicity constraints are slightly modified and
this restricts orientation flips in a spinfoam to occur only across degenerate
regions, thus reducing the sources of potential divergences.Comment: 8 pages, v2: Minor change
Transforming Sitka Spruce Plantations
The TranSSFor project is comparing conventional thinning in Sitka spruce plantations with two alternative thinning regimes
Hooked on osprey – the role of an “iconic” wildlife species in outdoor education
Much of the narrative associated with wildlife and habitat conservation has focused on individual, often iconic species. In the United Kingdom one of the most significant wildlife re-introduction success stories has been that of osprey. Although present in several regions since the 1950s, it was not until 2001 that osprey nested in the Lake District National Park, Cumbria, England. The return of osprey, after an absence of 150 years, was a major opportunity to engage park visitors with new outdoor activities and education. To date, in excess of 1 million visitors have participated in osprey viewing at sites managed by the Lake District Osprey Project. A core feature of the project is an educational program involving the contribution of a team of 100 volunteers. Econometric analysis has demonstrated a net gain to the local economy from osprey eco-tourism of approximately £2M/year. However, there has not yet been a detailed analysis of visitor perceptions of the educational and social value of the osprey project. This presentation will share the results of a research study based at two osprey viewing sites in the Lake District National Park. Interviews were conducted with approximately 300 visitors and incorporated questions, which pertained to demographic information, lifestyle, well-being, attitudes to nature, as well as the learning experience from interacting with osprey project volunteers. Our findings highlight the role that species conservation can play in stimulating outdoor engagement and education, and as a catalyst for physical activity. We discuss some of the opportunities and challenges associated with sustainable wildlife projects, and identify several policy implications
Comparison of three inventory protocols for use in privately-owned plantations under transformation to Continuous Cover Forestry
peer-reviewedInterest is growing in Continuous Cover Forestry (CCF) as a management approach among private
forest owners in Ireland. Developments in forest policy are directed at promoting CCF as a means of
enhancing forest resilience, sustaining forest production and delivering diverse ecosystem services.
In 2019 the Department of Agriculture, Food and the Marine (DAFM) introduced a new pilot
funding measure to support the adoption of CCF management in suitable private forests. Currently
the area of forest under CCF management is relatively small (estimated at around 1% of the total
forest area) and several barriers to wider adoption have been identified. These include the lack of
a simple template for the transformation of planted forests to CCF and a monitoring protocol with
known inventory costs and outputs. In this study three inventory protocols were compared in terms
of their ease of use, the types of data outputs and cost effectiveness in a forest stand at an early stage
of transformation to CCF. These protocols were compared to a complete enumeration approach.
The inventory protocols being tested were developed by the UK Forestry Commission (FCIN45), a
group of French and Belgian researchers (VISUAL) and the Irregular Silviculture Network (ISN).
Results indicate that by using modern technology and careful design, a cost-effective inventory
protocol can be implemented to collect information of sufficient accuracy to inform management
decisions. Advantages and limitations of each protocol are discussed. The ultimate outcome would
be the development and adoption of a common inventory and monitoring approach to enable private
owners to critically compare stand management and performance. This is essential to support and
guide forest managers and forest owners during the transformation process
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Power-Ups in Digital Games: The Rewarding Effect of Phantom Game Elementson Player Experience
Power-ups are a type of game reward that allow the player tocustomise their experience by altering gameplay for a shortperiod of time. Despite the wide use of power-ups in videogames, little is known about their effect on gaming experiences.To explore this, we conducted an experimental study that compares the experiences of players depending on their exposureto power-ups in a recreational video game. The results show that players who collected power-ups felt significantly more immersed in the game, experienced more autonomy, but didnot feel more competent or challenged than those who played the game without these collectables. Interestingly, a similareffect was observed for those players who picked up ‘placebo ’power-ups, despite the items having no effect on the gameplay. We provide a discussion of these results and their implications both for games user researchers and game designers
Change of Interest as a Function of Shift in Curricular Orientation
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/67119/2/10.1177_001316445301300213.pd
Sustainability assessment of Low Earth Orbit (LEO) satellite broadband mega-constellations
The growth of mega-constellations is rapidly increasing the number of rocket
launches required to place new satellites in space. While Low Earth Orbit (LEO)
broadband satellites help to connect unconnected communities and achieve the
Sustainable Development Goals, there are also a range of negative environmental
externalities, from the burning of rocket fuels and resulting environmental
emissions. We present sustainability analytics for phase 1 of the three main
LEO constellations including Amazon Kuiper (3,236 satellites), OneWeb (648
satellites), and SpaceX Starlink (4,425 satellites). In baseline scenarios over
five years, we find a per subscriber carbon dioxide equivalent (COeq) of
0.700.34 tonnes for Kuiper, 1.410.71 tonnes for OneWeb and
0.470.15 tonnes COeq/subscriber for Starlink. However, in the
worst-case emissions scenario these values increase to 3.021.48 tonnes for
Kuiper, 1.70.71 tonnes for OneWeb and 1.040.33 tonnes
COeq/subscriber for Starlink, more than 31-91 times higher than equivalent
terrestrial mobile broadband. Importantly, phase 2 constellations propose to
increase the number of satellites by an order-of-magnitude higher, highlighting
the pressing need to mitigate negative environmental impacts. Strategic choices
in rocket design and fuel options can help to substantially mitigate negative
sustainability impacts
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