Spiral and Interlocking Grain in Eucalyptus Dunnii

Spiral grain in 181 trees from a 9-year-old plantation-grown Eucalyptus dunnii was normally distributed with mean 0.33 degrees (to the left) and standard deviation 1.7 degrees, and was affected by family and by crown asymmetry. Interlocking grain was common, exhibiting a mean amplitude of 3.4 degrees (standard deviation 1.5 degrees) and a mean wavelength of 39 mm (standard deviation 12 mm). The relatively large amplitude of interlocking grain means that most trees will have spiral grain that alternates between left and right during each year. The wavelength of interlocking grain is influenced by tree size, but amplitude of interlocking is under genetic control. Both spiral grain and the amplitude of any interlocking were heritable (h2 = 0.99 and 0.63 respectively)

Carbon neutral policy in action: the case of Bhutan

Climate policy across the world is proceeding at a highly variable pace, with some places very committed to decarbonizing their economies and others just beginning. Emerging nations are generally just starting along this journey. However, among the few nation states that have pledged to achieve carbon neutrality, is Bhutan, a least developed country. Carbon neutrality is an ambitious climate policy that is increasingly being recognized as necessary in order to stabilize global temperature rise at 1.5°C. However, Bhutan is likely to face significant challenges in maintaining this status as the country balances its desire to grow in economic opportunities (GDP) and in human happiness (GNH). Little research has been conducted inside the policy processes to better understand how Bhutan will maintain carbon neutrality. Through open-ended, semi-structured interviews with key stakeholders, this study provides an inside view on the current situation and future challenges that Bhutan may face, along with the complexities associated with implementing and maintaining an ambitious carbon neutral policy. The paper highlights Bhutan's story and how it could be useful for policy learning and knowledge sharing, especially in the context of emerging nations’ climate governance

interlocking grain in Eucalyptus dunnii. Holz als Roh- und Werkstoff 63(5):372-379. Spiral and interlocking grain in Eucalyptus dunnii

Spiral grain in 181 trees from a 9-year-old plantation-grown Eucalyptus dunnii was normally distributed with mean –0.33 degrees (to the left) and standard deviation 1.7 degrees, and was affected by family and by crown asymmetry. Interlocking grain was common, exhibiting a mean amplitude of 3.4 degrees (standard deviation 1.5°) and a mean wavelength of 39 mm (standard deviation 12 mm). The relatively large amplitude of interlocking grain means that most trees will have spiral grain that alternates between left and right during each year. The wavelength of interlocking grain is influenced by tree size, but amplitude of interlocking is under genetic control. Both spiral grain and the amplitude of any interlocking were heritable (h 2 =0.99 and 0.63 respectively). Key words: Plantation Dunn’s white gum spiral grain heritabilit

Community perception of ecosystem services from commercially managed forests in Bhutan

Given the direct dependence rural communities have on forests, understanding ecosystem services can empower communities and align stakeholders to define priorities and objectives for the sustainable management of forest resources. In this qualitative study on the forest ecosystem services in Bhutan, we assessed community awareness and perceptions of local forest ecosystem services, identified their top priorities, and evaluated how they have changed over time. The study focused on state reserve forest areas designated for commercial timber production, formally known as forest management units (FMU). We held focus group discussions separately with women and men associated with five FMUs in the central belt of the country. Participants identified 45 ecosystem services, with soil productivity, freshwater, timber, fresh air, construction stone, carbon sequestration, spiritual value, pollination, and local weather regulation comprising the most highly valued services critical to local livelihood and well-being. Participants felt that forest ecosystem services have been generally declining over the past decade in the FMUs and identified a need for forest restoration activities to improve their delivery. We recommend that state forest entities conduct an awareness campaign to empower communities with the conceptual framework and globally recognized concepts to advocate for their needs related to forests. We also recommend that biophysical and economic studies be conducted in these areas to seek evidence for causal linkages between natural resource use and the status of ecosystem services. This study contributes to a growing literature on ecosystem services in Bhutan and provides a basis for future studies to understand how management activities can impact the delivery of critical services