COPA

Digital Repository for Área de Conservación Guanacaste, a World Heritage Place.

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  • Whither Tropical Ecology? 
    Janzen, Daniel H. (1972)
  • Why Are Seeds of the Central American Guanacaste Tree, Enterolobium cyclocarpum, I Not Attacked by Bruchids2 Except in Panama 
    Clarence Dan, Johnson; Janzen, Daniel H. (1982-04-02)
    The ranges of most other bruchids are usually contiguous with their hosts, but Stator generalis (Coleoptera: Bruchidae) is known to feed only in exposed seeds of guanacaste, Enterolobiurn cyclocarpurn (Leguminosae: ...
  • Why Taxonomy Matters 
    R., Smith; K., Rassmann; H., Davies; N., King (2011)
  • Why This Year's El Niño Could Grow Into a Monster Expect soaring global 
    Holthaus, Eric (2014-04-07)
  • Why Tropical Trees Have Rotten Cores 
    Janzen, Daniel H. (1976-06)
  • WILD PLANT ACCEPTABILITY TO A CAPTIVE COSTA RICAN BAIRD'S TAPIR 
    Janzen, Daniel H. (1982)
    A captive adult male Baird's tapir (Tapirus bairdil1 was offereathe foliage of 381 species of plants native to tapir habitat in Guanacaste Provo ince, Costa Rica. It absolutely rejected 55 percent, unambiguously accepted 29 ...
  • Wild Primate Populations in Emerging Infectious Disease Research: The Missing Link? 
    Wolfe, Nathan D.; Escalante, Ananias A.; Karesh, William B.; Kilbourn, Annelisa; Spielman, Andrew; Lal, Altaf A. (Emerging Infectious Diseases, 1998-06)
    Wild primate populations, an unexplored source of information regarding emerging infectious disease, may hold valuable clues to the origins and evolution of some important pathogens. Primates can act as reservoirs for human ...
  • Will human-induced changes in seawater chemistry alter the distribution of deep-sea scleractinian corals? 
    Guinotte, John M.; Orr, James; Cairns, Stephen; Freiwald, Andre; Morgan, Lance; George, Robert (The Ecological Society of America, 2006)
    The answer to the title question is uncertain, as very few manipulative experiments have been conducted to test how deep-sea scleractinians (stony corals) react to changes in seawater chemistry. Ocean pH and calcium carbonate ...
  • Wind driven upwelling in the Gulf of Nicoya, Costa Rica 
    Brenes, C. L.; Coen, J. E.; Chelton, D. B.; Enfield, D. B.; León, S.; Ballestero, D. (International Journal of Remote Sensing, 2003)
    Using satellite sensor data and information from local meteorological stations, a transient upwelling event in the Gulf of Nicoya, Costa Rica, has been observed during the period 6–8 March 1997 in coincidence with strong ...
  • Wing morphology predicts individual niche specialization in Pteronotus mesoamericanus (Mammalia: Chiroptera) 
    Fernandes-Magalhães de Oliveira, Hernani; Ferreira-Camarg, Nícholas; Hemprich-Bennett, David R.; Rodríguez-Herrera, Bernal; Rossiter, Stephen J.; Clare, Elizabeth L. (PLOS ONE, 2020-05-11)
    Morphological variation between individuals can increase niche segregation and decrease intraspecific competition when heterogeneous individuals explore their environment in different ways. Among bat species, wing shape ...
  • Yes? 
    Janzen, Daniel H. (1978-12)
    vices. As a symbiotic alternative, plants have evolved more easily obtainable food sources such as extra-floral nectaries; these and other devices have conferred on the comparatively sedentary (and often aggressive) ants a ...
  • Yucatan Meteor: The Real Impact 
    Janzen, Daniel H. (1992-11-13)
    The caprice of one large meteor hitting the earth 65 million years ago (Richard A. Kerr, Research News, 14 Aug., p. 878) is responsible for the existence of humanity. Had the dinosaurs survived, with all their capacity ...
  • ZELEDONIA - Boletín de la Asociación Ornitológica de Costa Rica 
    Villarreal Orias, Johnny; Pereira Chaves, José; Salazar Chacón, Marlon; G. Riedl, Isabell; H. Schulze, Christian; Torres Fallas, Sonia; Coto C., Walter; H. May, Roy (2010-06)
    El primer censo de Navidad que se realiza en el Parque Nacional Santa Rosa del Área de Conservación Guanacaste, se llevó a cabo el 2 de enero 2010. Participaron 16 personas que contaron 1.175 aves distribuidas en 130 ...
  • Untitled 
    Janzen, Daniel H. (1982)
    Horses are major contemporary dispersers of guanacaste tree seeds (Enterolobium cyclocarpum) in Costa Rica, and probably were in prehistoric times as well. By placing 2-L and 8-L piles of fresh horse dung containing 5, ...

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