Improving Indonesia's Forest and Land Governance: Using a Delphi Approach to Identify Efficacious Interventions

It is now recognized that addressing deforestation and forest and peatlands degradation and destruction in Indonesia requires improvements to land and forest governance. It is also accepted that further research is required into this large field of study and practice. In particular needs have been identified for better links between theory and practice, and between academic analysis and work in the field. To respond to this gap, this study investigates the underlying drivers of deforestation, and forest and peatlands degradation and destruction (herein called deforestation and peatlands degradation) with the intention of identifying interventions that will improve land and forest governance in Indonesia. Through a Delphi process, a panel of experts on forest and land governance identified three main drivers of deforestation and peatlands degradation. These were: (1) unclear land tenure and uncertain land classification (agreed by 88% of respondents); (2) business and political interests that influence policy-making and regulations (70% agreement) and (3) ineffective land use planning (53% agreement). In response, the panel recommended three priority governance interventions relating to the following issues: (1) increasing the capacity of local communities to manage and monitor forests and natural resources (65% agreement); (2) gazetting forests to clarify land boundaries and determine which areas should be village, community and state forest zone (58% agreement); (3) integrating participatory maps into spatial plans to protect local communities and indigenous peoples' development needs (53% agreement). A research theme with the highest agreement was the following: action research involving the government, private sector and community (64% agreement). This study finds that there is strong support for community level approaches to forest management. Securing community forest tenure through clarifying land claims and integrating local land tenure into spatial planning is a key step to achieving sustainable forest management. The concluding recommendations suggest that the most efficacious interventions to be taken by researchers, government, donors and civil society to improve Indonesia's forest and land governance processes include: Support community institutions; Accelerate forest gazettement using local community institutions to clarify community forest claims; Integrate participatory maps into spatial plans; Support local communities' ability to monitor forests; Conduct action research involving all stakeholders; Address financing of the forest and land sector; Engage political economy analysis

The agreement distance of unrooted phylogenetic networks

A rearrangement operation makes a small graph-theoretical change to a phylogenetic network to transform it into another one. For unrooted phylogenetic trees and networks, popular rearrangement operations are tree bisection and reconnection (TBR) and prune and regraft (PR) (called subtree prune and regraft (SPR) on trees). Each of these operations induces a metric on the sets of phylogenetic trees and networks. The TBR-distance between two unrooted phylogenetic trees $T$ and $T'$ can be characterised by a maximum agreement forest, that is, a forest with a minimum number of components that covers both $T$ and $T'$ in a certain way. This characterisation has facilitated the development of fixed-parameter tractable algorithms and approximation algorithms. Here, we introduce maximum agreement graphs as a generalisations of maximum agreement forests for phylogenetic networks. While the agreement distance -- the metric induced by maximum agreement graphs -- does not characterise the TBR-distance of two networks, we show that it still provides constant-factor bounds on the TBR-distance. We find similar results for PR in terms of maximum endpoint agreement graphs.Comment: 23 pages, 13 figures, final journal versio

Forests and climate change: adaptation and mitigation

ETFRN news No. 50: Forests and Climate Change: adaptation and mitigation. This newsletter contains interesting materials for those who think about the question how to proceed with forests and climate change after Copenhagen, with or without an agreement. Here below are presented some observations from this newsletter: • Adaptation and mitigation are separate issues in the climate discussions, but in forest practice they are two sides of the same coin. • We need forest management directed at the realization of different objectives at the same time, we do not need pure ‘carbon forests’. Not addressing ‘people’ and ‘planet’ considerations is increasingly seen – by both the public and private sector – as a business risk. • Not all countries will be able to comply with REDD rules in the short term. The voluntary carbon market will remain important. • REDD is an opportunity and a risk for local communities. Risks should be made transparent, and open and equal participation by communities in design and decision-making should be promoted • REDD and other forest-based climate change mitigation measures are likely to be low-cost and effective in the short to medium term. Some stakeholders fear that forests may become a too-cheap mitigation option and corrupt the overall climate agreement. In most calculations, however, the costs of developing, operating and managing the institutional system required to produce credible and sustainable forest carbon credits are not internalized in forest carbon prices. If they were, forest carbon prices would become much higher and more realistic. • The role of forests must be clarified and articulated in National Adaptation Programs of Action (NAPAs). At present most political attention and financing is focused on REDD, and, in general, on climate mitigation. Only recently has the concern for the role of forests in adaptation gained ground; this emanates from the growing recognition that climate change will happen anyway. Moreover, climate change will affect the most vulnerable ecosystems and poorer regions. • There is a clear need for harmonization and coherence in the certification market (SFM, and carbon, fair trade etc.). Certification is not necessarily the only credible basis for payment. As illustrated in this issue, mutual trust can be an alternative, particularly for small-scale initiatives that cannot afford the high transaction costs of certification

An allometry-based approach for understanding forest structure, predicting tree-size distribution and assessing the degree of disturbance

Tree-size distribution is one of the most investigated subjects in plant population biology. The forestry literature reports that tree-size distribution trajectories vary across different stands and/or species, while the metabolic scaling theory suggests that the tree number scales universally as -2 power of diameter. Here, we propose a simple functional scaling model in which these two opposing results are reconciled. Basic principles related to crown shape, energy optimization and the finite size scaling approach were used to define a set of relationships based on a single parameter, which allows us to predict the slope of the tree-size distributions in a steady state condition. We tested the model predictions on four temperate mountain forests. Plots (4 ha each, fully mapped) were selected with different degrees of human disturbance (semi-natural stands vs. formerly managed). Results showed that the size distribution range successfully fitted by the model is related to the degree of forest disturbance: in semi-natural forests the range is wide, while in formerly managed forests, the agreement with the model is confined to a very restricted range. We argue that simple allometric relationships, at individual level, shape the structure of the whole forest community.Comment: 22 pages, 4 figure

A process-based model of conifer forest structure and function with special emphasis on leaf lifespan

We describe the University of Sheffield Conifer Model (USCM), a process-based approach for simulating conifer forest carbon, nitrogen, and water fluxes by up-scaling widely applicable relationships between leaf lifespan and function. The USCM is designed to predict and analyze the biogeochemistry and biophysics of conifer forests that dominated the ice-free high-latitude regions under the high pCO2 “greenhouse” world 290–50 Myr ago. It will be of use in future research investigating controls on the contrasting distribution of ancient evergreen and deciduous forests between hemispheres, and their differential feedbacks on polar climate through the exchange of energy and materials with the atmosphere. Emphasis is placed on leaf lifespan because this trait can be determined from the anatomical characteristics of fossil conifer woods and influences a range of ecosystem processes. Extensive testing of simulated net primary production and partitioning, leaf area index, evapotranspiration, nitrogen uptake, and land surface energy partitioning showed close agreement with observations from sites across a wide climatic gradient. This indicates the generic utility of our model, and adequate representation of the key processes involved in forest function using only information on leaf lifespan, climate, and soils

Reconstructing the Marketplace: The International Timber Trade and Forest Protection

This Article proposes a new international regime to help recapture the lost value of native forests and promote global forest protection - the General Agreement on the Timber Trade. Part I outlines the essential differences between native forest conservation and industrial forestry. Part II chronicles the ecological, social, and economic losses resulting from the destruction of native forests. Part Ill reveals the national and international components of the timber trade, and demonstrates how these components contribute to unsustainable logging practices. Part IV assesses the effectiveness of prior and ongoing international efforts to reform the global timber trade and promote sustainable forestry. Concluding that these efforts have been largely unsuccessful, Part V sets forth the framework for a more responsive international regime, the General Agreement on the Timber Trade. Part VI proposes legal strategies for reconciling this new proposed agreement with the trade rules established under the General Agreement on Tariffs and Trade

A first step towards computing all hybridization networks for two rooted binary phylogenetic trees

Recently, considerable effort has been put into developing fast algorithms to reconstruct a rooted phylogenetic network that explains two rooted phylogenetic trees and has a minimum number of hybridization vertices. With the standard approach to tackle this problem being combinatorial, the reconstructed network is rarely unique. From a biological point of view, it is therefore of importance to not only compute one network, but all possible networks. In this paper, we make a first step towards approaching this goal by presenting the first algorithm---called allMAAFs---that calculates all maximum-acyclic-agreement forests for two rooted binary phylogenetic trees on the same set of taxa.Comment: 21 pages, 5 figure