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dc.contributor.advisorBird-Picó, Fernando J.
dc.contributor.authorMatos-Torres, Jaime J.
dc.description.abstractThe endemic Puerto Rican Crested Toad (Peltophryne [Bufo] lemur) is endangered with extinction with only one remaining population located at Guánica State Forest. Habitat associated with toad observations was characterized in terms of vegetation type, vegetation composition, surface characteristics, average temperature and relative humidity as well as water characteristics at breeding ponds. Geographic Information System (GIS) information was collected to make predictive models of toad distribution. Fifty three percent (53%) of observed toads were found in the “rocks & cacti” vegetation association, mostly composed of xerophytic arboreus species and a bare rock surface. Twenty two percent (22%) of observations were related to evergreen association mainly composed of evergreen arboreus species with a leaf litter covered surface. GIS models predict a higher probability of toad observations at the “rocks & cacti” and “evergreen” vegetation near breeding ponds. Breeding ponds showed significant differences in terms of pH and salinity. The Puerto Rican Crested Toad (P. lemur) seems to exploit different habitats at the Guánica State Forest.
dc.description.abstractEl endémico Sapo Concho Puertorriqueño (Peltophryne [Bufo] lemur) está amenazado de extinción, restando sólo una población localizada en el Bosque Estatal de Guánica. Se caracterizó su hábitat en términos de tipo y composición de vegetación, características de superficie, temperatura y humedad relativa promedio, además de características acuáticas en las charcas de reproducción. Se utilizó un Sistema de Información Geográfica (SIG) para crear un modelo predictivo de distribución de individuos. Cincuenta y tres porciento (53%) de las observaciones de sapos ocurrió en la asociación vegetal “rocas y cactos”, compuesta mayormente por vegetación arbórea xerofítica y una superficie de roca expuesta. Veintidós porciento (22%) de observaciones ocurrió en la asociación “siempre verde”, compuesta mayormente por especies arbóreas siempre verdes con una superficie cubierta de hojarasca. El modelo creado mediante SIG predice una mayor probabilidad de observación de sapos en las vegetaciones de “rocas & cactos” y en la “siempre verde” cerca de las charcas de reproducción. Las charcas de reproducción muestran diferencias significativas en términos de pH y salinidad. Al parecer el Sapo Concho Puertorriqueño (P. lemur) puede utilizar diferentes tipos de hábitat dentro del Bosque Estatal de Guánica.
dc.description.sponsorshipBob Johnson, Curator of Amphibians and Reptiles at the Metropolitan Zoo and AZA Puerto Rican Crested Toad SSP Coordinator Mr. Miguel (Menqui) Canals, Guánica Forest Manager Officialen_US
dc.subjectPuerto Rican Crested Toad (Peltophryne [Bufo] lemur)en_US
dc.subjectEndangered with extinctionen_US
dc.subjectPeltrophryne [Bufo] lemuren_US
dc.subject.lcshBufonidae--Habitat--Puerto Rico--Bosque Seco de Guánicaen_US
dc.subject.lcshPeltophryne lemuren_US
dc.titleHabitat characterization for the Puerto Rican Crested Toad (Peltophryne [Bufo] lemur) at Guánica State Forest, Puerto Ricoen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2006 Jaime J. Matos-Torresen_US
dc.contributor.committeeLewis, Allen R.
dc.contributor.committeeBerríos Órtiz, Ángel
dc.contributor.representativePagán, Melvin
dc.contributor.collegeCollege of Arts and Sciences - Sciencesen_US
dc.contributor.departmentDepartment of Biologyen_US

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