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Investments in forest landscapes and agroforestry will be critical in efforts to address climate change and rural poverty challenges in many countries. While it is the people living in and around forests that are best placed to make the... more
Investments in forest landscapes and agroforestry will be critical in efforts to address climate change and rural poverty challenges in many countries. While it is the people living in and around forests that are best placed to make the efforts needed to transform them into more sustainable systems from both environmental and livelihoods perspectives, women and men in local communities typically receive very little technical or financial support to do so. This is particularly the case for women. In the context of forest landscape initiatives, two overarching arguments exist for why it is critical to address the challenges to integrating gender equality actions and investments and to take specific steps to address these challenges and enable successful implementation. First and foremost is a rights-based argument. These investments and efforts should not maintain gender inequalities, but rather work toward advancing gender equality, as all people have the right to fair and equal trea...
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The lack of regenerating practices in the wooded area under forest management of Nuevo San Juan Parangaricutiro, Michoacan, Mexico allowed the development of this study whith the following objective: to describe the induced regeneration... more
The lack of regenerating practices in the wooded area under forest management of Nuevo San Juan Parangaricutiro, Michoacan, Mexico allowed the development of this study whith the following objective: to describe the induced regeneration of Pinus pseudostrobus in response to tree densities and differing site conditioning practices. The methodology consisted of the selection of 6 stands, the election of 6 tree densities, the establishment of 72 sites, site conditioning treatments (burning, cleaning, fallow and control), sowing of 420 seeds per site and factorial variance analysis. From the obtained results the following comes off: plant emergence after 2 months of applying the four and six treatments was 27.19 % (20 301 seedling h-1), differing from the control (29.77 %), from the 88-tree density (35.15 %) and 88-tree density interaction with the control (41.5 %). By the 5th and the 8th month period there were differences among treatments, with over 60 % survival for the fallow and th...
La falta de regeneración en la zona boscosa bajo manejo forestal de la comunidad Nuevo San Juan Parangaricutiro, Michoacán permitió el desarrollo del presente estudio, cuyo objetivo fue caracterizar la regeneración inducida de Pinus... more
La falta de regeneración en la zona boscosa bajo manejo forestal de la comunidad Nuevo San Juan Parangaricutiro, Michoacán permitió el desarrollo del presente estudio, cuyo objetivo fue caracterizar la regeneración inducida de Pinus pseudostrobus, en respuesta a diferentes tratamientos de preparación de sitio y densidad de arbolado. La metodología consistió en la selección de seis rodales con diferentes densidades de arbolado, en donde se establecieron 72 sitios. Se aplicaron cuatro tratamientos de preparación de sitio (quema, limpia, barbecho y testigo); la siembra de 420 semillas por sitio; y se hizo un análisis de varianza factorial. La emergencia a los 2 meses fue de 27.19 % (20 301 plántulas por hectárea), con diferencias para el testigo de 29.77 %; para la densidad 88 árboles, con 35.15 %; y para la interacción 88 árboles-testigo, con 41.5 % de emergencia. Hubo diferencias entre tratamientos en el quinto y octavo mes, dentro del barbecho y la limpia se registró...
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The forest tenure assessment tool (FTAT) and user guide consist of an integrated set of methodologies and guidelines for assessing why it is important to secure community-based forest tenure in a specific national or sub-national context,... more
The forest tenure assessment tool (FTAT) and user guide consist of an integrated set of methodologies and guidelines for assessing why it is important to secure community-based forest tenure in a specific national or sub-national context, and what needs to be done to strengthen forest tenure in that context. It is a companion piece to the analytical framework (AF), developed during phase one of the securing forest tenure rights for rural development initiative. The AF highlights the relevance of secure community-based forest tenure to sustainable development goals (SDG), and presents a set of key elements derived from evidence and best practice in securing community forest tenure. Community-based forest tenure is important because tenure security is key in achieving a range of SDGs. One part of the assessment methodology presented asks, why forest tenure reform? It focuses on consolidating country-specific evidence of the linkages between community-based forest tenure security and s...
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The lack of regenerating practices in the wooded area under forest management of Nuevo San Juan Parangaricutiro, Michoacán, Mexico allowed the development of this study whith the following objective: to describe the induced regeneration... more
The lack of regenerating practices in the wooded area under forest management of Nuevo San Juan Parangaricutiro, Michoacán, Mexico allowed the development of this study whith the following objective: to describe the induced regeneration of Pinus pseudostrobus in response to tree densities and differing site conditioning practices. The methodology consisted of the selection of 6 stands, the election of 6 tree densities, the establishment of 72 sites, site conditioning treatments (burning, cleaning, fallow and control), sowing of 420 seeds per site and factorial variance analysis. From the obtained results the following comes off: plant emergence after 2 months of applying the four and six treatments was 27.19 % (20 301 seedling h-1), differing from the control (29.77 %), from the 88-tree density (35.15 %) and 88-tree density interaction with the control (41.5 %). By the 5th and the 8th month period there were differences among treatments, with over 60 % survival for the fallow and th...
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John Spears, a visionary forest advisor to the World Bank in the 1970s, was an early advocate of the idea that communities could be good stewards of forest lands as well as providers of forest products and environmental services. At that... more
John Spears, a visionary forest advisor to the World Bank in the 1970s, was an early advocate of the idea that communities could be good stewards of forest lands as well as providers of forest products and environmental services. At that time, most developing countries followed colonial policies claiming ownership and control of forests as national assets. The 1978 World Bank forest strategy stimulated a dialogue for a future where communities would have statutory rights over land and forests. Community-based forest management is now expanding, underpinned by a very different body of law, policy, and regulation. More developing countries now recognize locally-controlled forestry as an economic engine, providing multiple economic, social and environmental benefits. What has contributed to this policy shift and endorsement of collective rights? How has secure tenure contributed to make Community Forest Enterprises successful? What are the expectations on delivery of sustainable develo...
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Landscape level variability of structure and tree species diversity was analyzed in a tropical deciduous forest at Chamela, Mexico. Trees with DBH ≥5 cm were sampled in 21 0.24 ha plots (5.04 ha in total) distributed among six different... more
Landscape level variability of structure and tree species diversity was analyzed in a tropical deciduous forest at Chamela, Mexico. Trees with DBH ≥5 cm were sampled in 21 0.24 ha plots (5.04 ha in total) distributed among six different morpho-pedological land units. Average density was 1,385 individuals ha-1, basal area 15.9 m2 ha-1, and canopy height 6.8 m. Trunks with DBH ≤14 cm accounted for 90% of the entire set. A total of 148 species, 102 genera, and 43 families were recorded. Seventy percent of all species were poorly represented (< 10 individuals ha-1). A Principal Component Analysis (PCA) based on structure and diversity variables showed that plots from the same morpho-pedological land unit were not always located close to each other along the two first axes, but a further PCA based on dominant species clearly divided two groups of plots. Although canopy structure and tree species diversity varied continuously across the landscape, -diversity (evaluated through speci...
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AGRIS record. Record number, US9423580. Titles, Old-growth Douglas-fir in western Washington. Personal Authors, Brubaker, LB,Vega-Gonzalez, S.,Ford, ED,Ribic, CA,Earle, CJ,Segura, G. Publication Date, (1992). AGRIS Subj. Cat. ...
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... Bull. Sec. Bet. Ft., 132, Lcttres bet., (4/5), 327-339. Pielou, EC, 1977. Mathematical ecology. ... pp. 179-197. Robert, MF, 1977. Notas sobre el cstudio ecologico y fitogeogr~fico de los bosques de Pinus cembroides, Zucc., en... more
... Bull. Sec. Bet. Ft., 132, Lcttres bet., (4/5), 327-339. Pielou, EC, 1977. Mathematical ecology. ... pp. 179-197. Robert, MF, 1977. Notas sobre el cstudio ecologico y fitogeogr~fico de los bosques de Pinus cembroides, Zucc., en M(~xico. Cicncia Forestal, 10(2): 49-58. ...
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ABSTRACT: Benefit cost analyses for three case studies which avoid carbon emissions and increase carbon sequestration in Mexican forests, a pulp wood plantation, a native temperate forest and a native tropical evergreen forest, are... more
ABSTRACT: Benefit cost analyses for three case studies which avoid carbon emissions and increase carbon sequestration in Mexican forests, a pulp wood plantation, a native temperate forest and a native tropical evergreen forest, are performed. Management of native ...
Research Interests: Performance Management, Carbon, Carbon Sequestration, Multidisciplinary, Site Productivity, and 14 moreglobal Climate change, Developing Country, Economic analysis, Case Study, Forest Management, Tropical forest, Deforestation, Cost effectiveness, Carbon Emissions, Storage, Cost Benefit Analysis, Forest Plantation, Temperate Forest, and Critical Reviews
Patterns of decline of mature and old-growth stands of Abiesamabilis (Dougl.) Forbes (Pacific silver fir) induced by tephra deposition from the 1980 eruption of Mount St. Helens were analyzed at the landscape level using discriminant and... more
Patterns of decline of mature and old-growth stands of Abiesamabilis (Dougl.) Forbes (Pacific silver fir) induced by tephra deposition from the 1980 eruption of Mount St. Helens were analyzed at the landscape level using discriminant and least squares regression analysis. From an array of environmental and biological factors, only the thickness of fine A3 tephra deposit, elevation, and the relative dominance of A. amabilis in a stand showed significant effects on decline. Stand decline, a mean value of the decline conditions of individual trees in a stand, increased with increasing amounts of A3 tephra and decreased with increasing elevation and relative dominance of A. amabilis. Elevation and relative dominance of A. amabilis were positively correlated, complicating the interpretation of each variable alone; we suspect that each individually represents conditions that influenced the vigor A. amabilis predisposing it and (or) contributing to the initial tephra-induced stress and, th...
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Stem analysis of mature Abiesamabilis (Dougl.) Forbes (Pacific silver fir) trees was used to analyze patterns of radial growth in areas of southwestern Washington where this species is experiencing a severe crown decline associated with... more
Stem analysis of mature Abiesamabilis (Dougl.) Forbes (Pacific silver fir) trees was used to analyze patterns of radial growth in areas of southwestern Washington where this species is experiencing a severe crown decline associated with heavy tephra deposition from the 1980 eruption of Mount St. Helens. Reductions in stem growth after 1980 appeared to be related to the severity of crown damage. The largest reductions in cross-sectional area increment exceeded 50% and extended along most of the stem. An increase in stem growth in the upper crown was common among declining trees. This zone coincided with a portion of the crown that has experienced vigorous and rapid growth since 1980. The role of this recovery zone on subsequent tree recovery is discussed. Decline or recovery of trees appeared independent of crown class per se. Reductions in radial growth of declining trees tended to be more pronounced at breast height, suggesting that estimations of whole-stem growth based on breast ...
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Radial growth trends of old-growth mixed conifer forests were evaluated in areas impacted by tephra deposition from the 1980 eruption of Mount St. Helens, Washington. These areas were characterized by a crown decline in Abiesamabilis... more
Radial growth trends of old-growth mixed conifer forests were evaluated in areas impacted by tephra deposition from the 1980 eruption of Mount St. Helens, Washington. These areas were characterized by a crown decline in Abiesamabilis (Dougl.)Forbes (Pacific silver fir), associated with the long-term tephra retention by foliage. Post-1980 growth changes of A. amabilis were quantified using standard dendrochronological techniques in stands covering a range of crown decline conditions, amount of tephra deposited, elevation, and species composition. Time-series models revealed autocorrelations in the growth trend of all species at all sites. Intervention analysis quantified posteruption radial growth changes and significantly improved the description of the original time series models. Growth reductions of A. amabilis were generally consistent with the mean crown decline conditions of individual sites. However, the magnitude of growth reductions did not correspond closely to the decline...