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Now showing items 362-381 of 538

Pleistocene Park: Does re-wilding North America represent sound conservation for the 21st century?

Rubenstein, Dustin R.; Rubenstein, Daniel I.; Sherman, Paul W.; Gavin, Thomas A. (Biological Conservation, 2006-06-06)

A group of conservation biologists recently proposed to populate western North America with African and Asian megafauna, including lions, elephants, cheetahs, and camels, to create a facsimile of a species assemblage ...
Plicopurpura pansa (Gould, 1853) from the Pacific Coast of Mexico and Central America: a traditional source of Tyrian Purple

Naegel, Ludwig C. A. (Journal of Shellfish Research, 2004-04-01)

Most marine snails of the families Muricidae and Thaididae, which make up the genera Murex, Thais, and Plicopurpura, produce in the hypobranchial gland (mucus gland) a viscous liquid secretion. The secretion contains, ...
POLITICA, GOBERNABILIDAD E INSTITUCIONES LOCALES PARA LA CONSERVACION DE LA BIODIVERSIDAD EN COSTA RICA

Xavier, Basurto (2007)

Los bosques, el agua, los océanos y la biodiversidad son ejemplos de recursos de uso común. Los recursos de uso común no son bienes privados ni bienes públicos, son una categoría intermedia que presenta características ...
Por qué no liberar animales silvestres decomisados

Jiménez, Iván; Cadena, Carlos Daniel (Ornitología Colombiana, 2004)

Hace algunos meses se suscitó un debate muy interesante entre los usuarios de la lista de discusión de la Red Nacional de Observadores de Aves de Colombia (RNOA). La chispa que encendió la mecha fue un mensaje de un usuario ...
POTENTIAL IMPACTS OF CLIMATIC CHANGE ON THE PRODUCTIVE CAPACITY OF COSTA RICAN FORESTS:

Tosi, Joseph A. Jr.; Watson, Vicente; Echeverría, Jaime (1992-06)

In the context of present-day scientific concern with predicted climatic changes resulting from the current untoward generation and release of CO2 and other "greenhouse" gases, the Department of Environmental Sciences ...
POTENTIALLY DEFENSIVE PROTEINS IN MATURE SEEDS OF 59 SPECIES OF TROPICAL LEGUMINOSAE

Janzen, Daniel H.; Clarence, A. Ryan; Liener, Irvin E.; Pearce, G. (1985-10-15)

A survey of 59 species of tropical legume seeds revealed high interspecific variation in pTOlcinaccous capacity to inhibit bovine trypsin (a digesli"e enzyme) and 10 agglutinate human (type B. Rh positive) and laoorawry rabbit ...
Prasmodon zlotnicki, a new Neotropical species of the genus Prasmodon Nixon (Braconidae: Microgastrinae) from Costa Rica, with the first host records for the genus

Valerio, Alejandro A.; Rodriguez, Josephine J.; Whitfield, James B.; Janzen, Daniel H. (2005)

Prasmodon zlotnicki, a new Costa Rican species of the genus Prasmodon Nixon, is described and illustrated. In addition, the first host records for the genus are included along with an updated key to differentiate Prasmodon ...
Predation in nature by a scorpion-hunter, Stenorrhina freminvillei (Serpentes, Colubridae)

Solórzano, Alejandro; Greene, Harry W. (Research Journal of the Costa Rican Distance Education University (UNED Research Journal), 2012-06)

Sonorini snakes are arthropod specialists but we know of only one published diet record for Stenorrhina freminvillei. Here we present quantitative data for predation on scorpions in nature by S. freminvillei: in nature, ...
Predation of Olive Ridley (Lepidochelys olivacea) Nests by Vertebrates and Crabs at Playa Nancite, Costa Rica

Kristen, Nelson; Macalester, College; Claudette, Mo (1996-05)

This study documents the predation of olive ridley sea turtle {Lepicochelys ohvaceu) nests on Playa Nancite, Guanacaste Conservation Area, Costa Rica Data were collected between February 27 and April 24 Predator frequency ...
Predation of Rhinophrynus dorsalis (Duméril and Bibron, 1841) (Anura: Rhinophrynidae) by Leptodeira rhombifera (Günther, 1872) (Serpentes: Dipsadidae), in Guanacaste, Costa Rica

Céspedes, Jeyson; Astorga, Juan De Dios; Sánchez, Josué; Obando, Juan (2018-11-14)

The Mexican burrowing toad Rhinophrynus dorsalis (Duméril and Bibron, 1841) is a widely distributed species with a range that spans from southern Texas to the northwest of Costa Rica (Savage, 2002; Köhler, 2011; Leenders, ...
Predation on coatis, Nasua narica, by white-faced capuchin monkeys, Cebus capucinus

Perry, Susan; Rose, Lisa (1990)

White-faced capuchin monkeys were frequently observed to raid the nests and predate the pups of coatis at two study sites (Santa Rosa National Park and Lomas Barbudal Biological Reserve) in northwestern Costa Rica. Adult ...
Predator recognition and evasive behavior by sweat bees, Lasioglossum umbripenne (Hymenoptera: Halictidae), in response to predation by ants, Ectatomma ruidum (Hymenoptera: Formicidae)

Weislo, William T.; Schatz, Bertrand (Behavioral Ecology and Sociobiology, 2003-02)

Ectatomma ruidum is an abundant soil-nesting Neotropical ant, which displays extensive behavioral flexibility during foraging activities. We studied here one unusual element of their behavioral repertoire: ambush predation. ...
Predators accelerate nutrient cycling in a bromeliad ecosystem.

Ngai, Jacqueline T.; Srivastava, Diane S. (Science, 2006-11-10)

Conventional ecological theory predicts that predators affect nutrient cycling by decreasing the abundance or activity of prey. By using a predator-detritivore-detritus food chain in bromeliads, we show that predators can ...
Prevención de accidente ofídico

Instituto, Clodomiro Picado (UCR, 2021-09)

Como parte de su actividad de acción y responsabilidad social, el Instituto Clodomiro Picado ofrece a los ciudadanos información relacionada con la prevención de las mordeduras de serpientes, de manera que puedan adoptar ...
Proceedings of the Symposium on the Biology of the California Islands

Janzen, Daniel H. (1968-03)

As is customary for symposia with many contributors (27 with 19 papers), the Proceedings of the 1965 symposium on the Biology of the California Islands has only now been published. "The symposium was the natural ...
Procyrnea chabaud, 1958 (Nematoda: Habronematoidea: Habronematidae) in birds from the Area de Conservación Guanacaste, Costa Rica, including descriptions of 3 new species.

Shang, Luping; Brooks, Daniel R.; Causey, Douglas (Journal of Parasitology, 2004-04)

Four species of Procyrnea were collected in birds from the Area de Conservacion Guanacaste, Costa Rica. Procyrnea brevicaudata n. sp. in Crypturellus cinnamomeus resembles P. ficheuri, P. murrayi, P. ameerae, P. dollfusi, ...
EL PROGRAMA DE EDUCACION BIOLOGICA DEL AREA DE CONSERVACION GUANACASTE: COSTOS Y OPORTUNIDADES DE FINANCIAMIENTO

Blanco Segura, Róger (2002-10)

En este trabajo se realiza una cuantificación para el año 2002 de los costos del Programa de Educación Biologica (PEB) del Area de Conservación Guanacaste (ACG-Silvestre) y se propone y valoran tres posibles opciones ...
PROPUESTA DE APROVECHAMIENTO AVITURÍSTICO PARA LAS COMUNIDADES RODEITO, EL TRIUNFO Y PARCELAS DE SANTA MARÍA DE LIBERIA, GUANACASTE, COSTA RICA, 2017-2019

Azofeifa Rojas, Inés; Bello Umaña, Yury Gabriela (2019)

La Propuesta de Aprovechamiento Aviturístico para las Comunidades Rodeito, El Triunfo y Parcelas de Santa María de Liberia, Guanacaste, Costa Rica, 2017-2019, abarca un documento donde se expone el tema del aviturismo en ...
Protection of Barteria (Passifloraceae) By Pachysima Ants (Pseudomyrmecinae) in a Nigerian Rain Forest

Janzen, Daniel H. (1972-09)

In a Nigerian rain forest, occupation of Barteria fistulosa saplings by Pachysima aethiops ants results in the plants having more leaves, more branches, more leaves per branch, and less damage to the shoot tips than do ...
Rainforest and cloud forest Scolytodes (Curculionidae, Scolytinae, Hexacolini) from the Arthropods of La Selva inventory in Costa Rica: new species, new synonymy, new records

Jordal, Bjarte H.; Kirkendall, Lawrence R. (ZooKeys, 2019-07-11)

Quantitative collecting efforts over the last several decades in Costa Rica have resulted in many new species of insects. The Arthropods of La Selva projects included collecting from a typical lowland Neotropical forest ...

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