• Regional: Central America: Science and Environment  (11)

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	Spanish  (23)

• Braulio Carrillo-La Selva Region - Detailed geographic and ecological information on this area of the country, including indigenous species, environmental threats, bibliography, and photos.
• Centre for Land Use and Water Resources Research - Project to study socio-economic impacts of land use and hydrological change in tropical montane cloud forest areas of the Lake Arenal watershed. Includes a list of the collaborating institutions and a photo gallery.
• The Cloudbridge Project - A private nature reserve created to preserve biodiversity in the tropical cloud forest adjoining the Chirripó Pacifico river on the slopes of Mt. Chirripó. Describes site ecology and reforestation project.
• Costa Rica Long Term Ecological Research - A network of institutions and field research stations, with bibliography, descriptions and contact info.
• Costa Rica Mineral Assessment - USGS - Geologic maps as well as descriptive and interpretive text covering physiographic, geologic, geochemical, geophysical, and mineral site themes as well as a mineral-resource assessment. Download requires additional software.
• Costa Rica Volcanoes and Volcanics - USGS descriptions and location map, eruption histories.
• Costa Rica Wildlife - Information about various rainforest animals, earth science and literature.
• Diptera of Costa Rica - A project organized for collecting, mounting and identification of specimens of flies and mosquitoes. Includes information about the staff and facilities, sampling sites, and publications.
• El Bosque Nuevo - Organization using agro-forestry to preserve tropical rainforests. Describes project of sustainably harvesting butterfly pupae for sale to conservatories with pictures and descriptions of many tropical butterfly species.
• Field Guide to the Amphibians and Reptiles of Las Cruces - Photos and descriptions to aid in identification of the regional species.
• Finca Loma Linda - San Vito, Coto Brus, Puntarenas. Organization offers research, internships and community assistance with conservation, ecology, marketing and sustainable agricultural development.
• La Gamba Field Station - Research, teaching and education institution located on the edge of the Piedras Blancas National Park. Lists programs and publications, with information on visiting or donating. [English/German]
• Lankester Botanical Garden - Part of the University of Costa Rica, they describe their collections, hours and admission fees, and research and collecting projects.
• Las Nubes Centre for Neotropical Conservation and Research - A joint conservation and research project of York University and the Tropical Science Center.Located on the Pacific slope of the Talamanca Mountain Range
• Procuenca San Juan - Multi-organizational workshop on the climate and socio-economic conditions of the San Juan River Basin. Includes field investigations and technical reports with maps.
• Project ALAS Arthropods of La Selva - A large scale inventory of arthropod diversity in the lowland tropical rainforest of La Selva. Includes a history and description of the laboratory facilities, information management and research publications.
• Proyecto Campanario - Biological conservation and research facilities
• SciELO - Scientific Electronic Library Online - Electronic virtual library covering a selected collection of Costa Rican scientific journals. Includes browsing tools for serials and articles. [English/Spanish/Portuguese]
• Tropical Sierra Foundation - Dedicated to preserving, reforesting, and establishing habitats for endangered species in the tropics. Information about current projects, news, membership and volunteering.
• Volcanoes Guanacaste Range System - Brief descriptions of each of the volcanoes in the Guanacaste Range.
• Volcanoes of Costa Rica - General discussion of volcanic activity in the country, followed by a list of major structures, with photos and descriptions.
• World Wildlife Photo Gallery - Photos of birds, animals, and landscapes.

• Charral Project - Report on academic research project on rainforest establishment in abandoned pastures. Discusses birds, plants, and soil. (November 20, 1996)