| Asociacion ANAI: A non-profit volunteer organization: includes list of ecological conservation projects, ecotours; nature photos. |
| 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. |
| Charral Project: Report on academic research project on rainforest establishment in abandoned pastures. Discusses birds, plants, and soil. |
| Costa Rica Long Term Ecological Research: A network of institutions and field research stations, with bibliography, descriptions and contact info. |
| 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. |
| PROMAR: Works for the conservation of the marine ecosystems of Costa Rica through environmental education, research and influence in management policies. |
| 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] |
| 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. |
| 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. |
Classical
