Swietenia macrophylla King (Meliaceae: Swietenioideae) provides one of the premier timbers of the world. The mahogany shoot borer Hypsipyla robusta Moore (Lepidoptera: Pyralidae) is an economically important pest of S. macrophylla throughout Asia, Africa and the Pacific. No viable method of controlling this pest is known. Previous observations have suggested that the presence of overhead shade may reduce attack by H. robusta, but this has not been investigated experimentally. This research was therefore designed to assess the influence of light availability on shoot-borer attack on S. macrophylla, by establishing seedlings under three different artificial shade regimes, then using these seedlings to test oviposition preference of adult moths, neonate larval survival and growth and development of shoot borer larvae.
The results indicate that shading of mahogany seedlings may reduce the incidence of shoot borer attack, by influencing both oviposition and larval development. The establishment of mahogany under suitable shade regimes may therefore provide a basis for controlling shoot borer attack using silvicultural approaches.Resource Type: Journal Papers
This report describes a new map-based approach to defining areas best suited for NTFP commercialization. Uganda is used as a case study. As one of the most rapidly growing economies in Africa, its rich natural heritage highlights the conflict between national development efforts and the need for a globally responsible approach to biodiversity conservation.Resource Type: Reports
This study assesses the global gaps in forest conservation with reference to the target of the Convention on Biological Diversity (CBD), which calls for the effective conservation of "at least 10% of the world's forest types" by 2010 (decision VIII/15). The results are expected to guide forest conservation policies and planning at national and international levels.Resource Type: Reports
Biodiversity Loss and Conservation in Fragmented Forest Landscapes is the product of over 10 years of intensive field research into the changing montane and temperate rainforests of Mexico and South America. By concentrating on these largely overlooked environments, the studies reported allow for comparative analysis across areas and help identify how human disturbance has impacted the biodiversity of all forest types. Chapters incorporate features of landscape ecology, floristic biodiversity, conservation and policy and vary from in-depth investigations of a single study area to integrated examinations across regions.Resource Type: Reports
This report illustrates several of the cumulative environmental impacts of piecemeal infrastructure development, population growth, water shortage and climate change in the Greater Asian Mountain region. The scope of this report is the broad, regional scale land use change.Resource Type: Reports
In recognizing the challenge of producing relevant scientific solutions to current environmental problems, Earthwatch-sponsored scientists were invited to submit papers that contribute to this topic: Translating Scientific Results into Conservation Actions.
Six contributors were invited to participate in the 2007 Earthwatch Annual Principal Investigator Conference. The following compendium includes all submitted papers and summarizes the workshop discussion.
The World Database on Protected Areas (WDPA) is the key source for global and regional forest protected area information. It is in the process of a major redevelopment that will significantly enhance its usefulness for various users. The database already plays a significant role in reporting to major globally-agreed goals and targets, such as Millennium Development Goal 7 and the CBD programmes of work on forests and protected areas. For any global forest protected area network, the WDPA could provide information on officially designated protected areas, including sites that have not been assigned a particular IUCN management category but nevertheless qualify as sites contributing towards national, regional and global efforts and processes addressing forest conservation.Resource Type: Reports
The Bamboo Diversity Report represents the first step towards planning and implementing conservation and sustainable management of bamboos in the wild, in addition to making a significant contribution to the implementation of the Global Strategy for Plant Conservation, which aims to halt the current and continuing loss of plant diversity. This study is the result of a collaboration between INBAR and UNEP-WCMC.Resource Type: Reports
This review draws on recent research to summarise advances since the IPCC AR4 in our understanding of the impacts of climate change on biodiversity. The evidence for these impacts comes from three principal sources: direct observation; experimental studies; and modelling studies.Resource Type: Reports
The importance of non-timber forest products (NTFPs) to rural income was examined in a highland community in the Sierra de Manantlán Biosphere Reserve, Jalisco-Colima, Mexico. Rapid Rural Appraisal (RRA) techniques were used to interview 70 of households in the community of El Terrero. Of the nine plant species identified as NTFP sources, the two principal species traded by the community were tila (derived from the flowers and fruits of the tree Ternstroemia lineata), and blackberry (Rubus spp.). Collecting and selling of NTFPs was almost exclusively undertaken by women, with 80 of respondents participating. NTFP sale ranked as the most important source of cash income for 30 of women interviewed, and either second- or third-most important for the remainder. The research examined harvesting impact on populations of T. lineata, an understory tree species characteristic of cloud forest, which this was assessed in the four most-frequented collecting sites. Our results suggested that current harvesting approaches appear to be sustainable, although 95 of the women interviewed reported a decline in resource availability within the last 15 years, apparently resulting from illegal cutting. Suggestions are made with respect to the sustainable development of NTFP resources to help alleviate poverty within the Reserve.Resource Type: Journal Papers
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