Now showing items 1175-1194 of 2044

    • Macradenia R.Br. 

      Pupulin, Franco; Karremans Lok, Adam Philip (2020)
      Descripción de Macradenia R.Br.
    • Macroecology of high-elevation myxomycete assemblages in the northern Neotropics 

      Rojas Alvarado, Carlos Alonso; Stephenson, Steven L.; Huxel, Gary R. (2010)
      A number of recent studies have been directed towards developing a more complete understanding of myxomycete ecology throughout the world. However, the lack of comparative data obtained using standard methodologies makes ...
    • Macrofauna bentónica de las playas de arena del Área de Conservación Osa, Puntarenas, Pacífico Sur de Costa Rica 

      Corrales Ugalde, Marco; Sibaja Cordero, Jeffrey Alejandro (2015)
      Se describe la diversidad y composición de especies las playas de arena del Pacífico Sur de Costa Rica. En las playas de arena de la región, se colectó individuos de la infauna por medio de barrenos. Para la zona de entre ...
    • Macroinvertebrates as indicators in tropical streams with different land use in southern Costa Rica 

      Duschek, Verena G.; Springer Springer, Monika; Niedrist, Georg H.; Füreder, Leopold (2019)
      Costa Rica is one of the countries with the highest species richness worldwide and forms an important land bridge between North and South America. In the past, Costa Rica suffered from deforestation due to conversion of ...
    • Madres ancestrales 

      Meléndez Obando, Mauricio O. (2012-09)
      El ADN mitocondrial que portamos todos los seres humanos lo recibimos en herencia, exclusivamente, de nuestra madre. De lo que se deduce que nuestra progenitora lo recibió de su madre, quien, a su vez, lo heredó de la suya, ...
    • Making the invisible visible: methods to enhance features of tiny spider webs 

      Solano Brenes, Diego; Miranda Garnier, Ximena; Barrantes Montero, Gilbert (2018)
      The characteristics and designs of webs provide valuable information on ecology, behavior and phylogenetic relationships. Characters are often obtained from detailed analyses of web photographs. We describe new methods to ...
    • Malaxis Sw. 

      Chinchilla Alvarado, Isler Fabián; Dressler, Robert L.; Pupulin, Franco (2020-03-31)
      The genus Malaxis was named in 1788 by Olof Swartz. The name was based on malaxo, Greek for “softening,” apparently referring to the soft or delicate leaves. Traditionally Malaxis has been characterized in part by ...
    • Male courtship behavior in Ceratitis Capitata (Diptera: Tephritidae) that have received aromatherapy with ginger root oil 

      Briceño Lobo, Daniel; Eberhard Chabtree, William G.; Shelly, Todd (Florida Entomologist 90(1), 175-179, March 2007, 2007-03)
      The results of previous studies that showed that exposing mass-reared male Mediterranean fruit flies Ceratitis capitata (Wiedemann) to ginger root oil (“aromatherapy”) increases the likelihood of mating with wild females ...
    • Male song variation of Green Violetear (Colibri thalassinus) in the Talamanca Mountain Range, Costa Rica 

      Barrantes Montero, Gilbert; Sánchez, Carlos; Hilje, Branko; Jaffé, R. (2008)
      We studied variation in acoustic and temporal characteristics of the static male song of the Green Violetear (Colibri thalassinus) in a single population in Costa Rica. The static song of 19 males was extremely variable. ...
    • Manejo exitoso de una inundación en el Herbario USJ de Costa Rica 

      Morales Sánchez, Carlos (2013-12)
      En noviembre de 2007 se rompió una cañería de agua potable en la Escuela de Biología, Universidad de Costa Rica, que provocó una inundación que afectó seriamente el Herbario USJ. Aquí comento las lecciones aprendidas y las ...
    • Manganese and cobalt redox cycling in laterites; Biogeochemical and bioprocessing implications 

      Newsome, Laura; Solano Arguedas, Agustín; Coker, Victoria S.; Boothman, Cristopher; Lloyd, Jonathan R. (2020)
      Cobalt is essential for the modern technology that underpins the decarbonisation of our economies, but its supply is limited leading to its designation as a critical metal. Cobalt biogeochemistry is poorly understood, yet ...
    • Mapa preliminar de peligros volcánicos para el volcán Rincón de la Vieja (Costa Rica) descripción de un escenario de afectación por lahares 

      Alpízar Segura, Yemerith (2018)
      En el presente trabajo de investigación, se elaboró un mapa preliminar de peligros volcánicos para el volcán Rincón de la Vieja, con énfasis en la afectación por lahares, con base en el cual se emiten una serie de ...
    • El mapeo geológico y vulcanológico en América Central hasta el inicio de la Segunda Guerra Mundial 

      Soto Bonilla, Gerardo J. (2009)
      Los mapas han cambiado el conocimiento del mundo, pues han puesto al alcance de todos, representaciones gráficas de vastas regiones que pueden serle desconocidas al lector o receptor. Los de principios del siglo XVI, que ...
    • Mapping Environmental and Socioeconomic impacts of hydrometeorological hazards across Central America. Study case: Honduras 

      Alfaro Martínez, Eric J.; Hidalgo León, Hugo G.; Pérez Briceño, Paula Marcela (2018)
      Hydrometeorological hazards have historically affected Central America and significantly impacted the isthmus. However, the spatial distribution of those impacts is heterogeneous and depends on several factors, such as ...
    • Marine biodiversity baseline for Área de Conservación Guanacaste, Costa Rica: published records 

      Cortés Núñez, Jorge (2017)
      The diversity of tropical marine organisms has not been studied as intensively as the terrestrial biota worldwide. Additionally, marine biodiversity research in the tropics lags behind other regions. The 43,000 ha Sector ...
    • Marine Biodiversity in the Caribbean: Regional Estimates and Distribution Patterns 

      Miloslavich de Klein, Patricia; Díaz Merlano, Juan Manuel; Klein Salas, Eduardo; Alvarado Barrientos, Juan José; Díaz, Cristina; Gobin, Judith F.; Escobar Briones, Elva; Cruz Motta, Juan José; Weil, Ernesto; Cortés Núñez, Jorge; Bastidas, Carolina; Robertson, Ross; Zapata, Fernando A.; Martín Zazo, Alberto; Castillo, Julio; Kazandjian, Aniuska; Ortíz, Manuel (2010)
      This paper provides an analysis of the distribution patterns of marine biodiversity and summarizes the major activities of the Census of Marine Life program in the Caribbean region. The coastal Caribbean region is a large ...
    • Marine Biodiversity of Eastern Tropical Pacific Coral Reefs 

      Cortés Núñez, Jorge; Enochs, Ian C.; Sibaja Cordero, Jeffrey Alejandro; Hernández, Luis; Alvarado Barrientos, Juan José; Breedy Shadid, Odalisca; Cruz Barraza, José Antonio; Esquivel Garrote, Octavio; Fernández García, Cindy; Hermosillo, Alicia; Kaiser, Kirstie L.; Medina Rosas, Pedro; Morales Ramírez, Álvaro; Pacheco, Cristian; Pérez Matus, Alejandro; Reyes Bonilla, Héctor; Riosmena Rodríguez, Rafael; Sánchez Noguera, Celeste; Wieters, Evie A.; Zapata, Fernando A. (2017)
      The eastern tropical Pacific (ETP) is an isolated oceanic region exposed to extreme oceanographic conditions, including low salinity, low pH, high temperatures during El Niño, and low temperatures during La Niña and seasonal ...
    • Marine Insects 

      Springer Springer, Monika (2008)
      Although insects are one of the most diverse groups of organisms on earth, relatively few species are found associated with marine habitats. The majority of these marine species live in intertidal or coastal habitats and ...
    • Marinos, comercio y poder en el siglo XIX 

      Grillo Rosanía, Roxana (Revista Crisol, n. 12, p. 43-45, 2004, 2004)
      En los puertos del Pacífico centroamericano, los marinos sudamericanos y europeos que arribaron a la región y se establecieron durante las primeras tres décadas del siglo XIX, desempeñaron un papel clave en la estructuración ...