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.
- http://pubs.usgs.gov/dds/dds19/

Lankester Botanical Garden
- Part of the University of Costa Rica, they describe their collections, hours and admission fees, and research and collecting projects.
- http://www.jardinbotanicolankester.org

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.
- http://www.cluwrr.ncl.ac.uk/research_projects/ongoing_research/prj_costa_rica.php

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
- http://www.yorku.ca/lasnubes/

Tropical Sierra Foundation
- Dedicated to preserving, reforesting, and establishing habitats for endangered species in the tropics. Information about current projects, news, membership and volunteering.
- http://www.tropicjoes.com/

Field Guide to the Amphibians and Reptiles of Las Cruces
- Photos and descriptions to aid in identification of the regional species.
- http://www.dnr.cornell.edu/edge/Field_guide_main_page.htm

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.
- http://www.oas.org/sanjuan/english/documents/dialogue/contents.html

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.
- http://www.inbio.ac.cr/papers/diptera/ing/twig.htm

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.
- http://viceroy.eeb.uconn.edu/ALAS/ALAS.html

Costa Rica Long Term Ecological Research
- A network of institutions and field research stations, with bibliography, descriptions and contact info.
- http://crlter.ots.ac.cr/

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]
- http://www.scielo.sa.cr/

Braulio Carrillo-La Selva Region
- Detailed geographic and ecological information on this area of the country, including indigenous species, environmental threats, bibliography, and photos.
- http://www.nmnh.si.edu/botany/projects/cpd/ma/ma16.htm

World Wildlife Photo Gallery
- Photos of birds, animals, and landscapes.
- http://homepage2.nifty.com/wwgkanda/encr01.html

Volcanoes Guanacaste Range System
- Brief descriptions of each of the volcanoes in the Guanacaste Range.
- http://insidecostarica.com/travel/costarica_volcanoes_guanacaste.htm

Costa Rica Volcanoes and Volcanics
- USGS descriptions and location map, eruption histories.
- http://vulcan.wr.usgs.gov/Volcanoes/CostaRica/framework.html

Charral Project
- Report on academic research project on rainforest establishment in abandoned pastures. Discusses birds, plants, and soil.
- http://www.plantbio.uga.edu/~chris/charral.html

Costa Rica Wildlife
- Information about various rainforest animals, earth science and literature.
- http://www.costarica-homeschool.com/

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.
- http://cloudbridge.org

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]
- http://www.lagamba.at

Volcanoes of Costa Rica
- General discussion of volcanic activity in the country, followed by a list of major structures, with photos and descriptions.
- http://kostaryka.org/wulkany2489/

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.
- http://www.elbosquenuevo.org/

Finca Loma Linda
- San Vito, Coto Brus, Puntarenas. Organization offers research, internships and community assistance with conservation, ecology, marketing and sustainable agricultural development.
- http://www.fincalomalinda.org/

Asociacion ANAI
- A non-profit volunteer organization: includes list of ecological conservation projects, ecotours; nature photos.
- http://www.anaicr.org/

Proyecto Campanario
- Biological conservation and research facilities
- http://www.campanario.org/