Browsing Facultad de Artes y Ciencias by Title
Now showing items 7-26 of 58
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Coexistence of Feral Africanized and European Honey Bees (Hymenoptera: Apoidea: Apidae) on St. Croix Island
(Caribbean Journal of Science, Vol. 44, No. 2, 264-266, 2008, 2008-07)The first evaluation of the feral population of honey bees on the island of St. Croix, US Virgin Islands is performed. Since Africanized bees had been reported in 1994, we expected that, as in the neighboring island of ... -
Comparisons of Earthworm Community Structure between an Active Pasture and an Adjacent Tropical Wet Forest in Puerto Rico
(Caribbean Journal of Science, Vol. 42, No. 3, 311-314, 2006, 2006-12)Earthworm populations have been recognized as indicators of soil fertility and health. To examine the influence of tropical land-use changes on earthworm community structure, we sampled earthworm populations in three plots ... -
Coral Reef Ecosystem Studies: Integrating Science and Management in the Caribbean
(Caribbean Journal of Science, Vol. 45, No. 2-3, 134-137, 2009, 2009) -
Coupling of humans, habitats and other species: a study of the fishers’ traditional ecological knowledge (TEK) in La Parguera
(Caribbean Journal of Science, Vol. 45, No. 2-3, 363-371, 2009, 2009)For generations, fishermen have constructed, shared, and refined knowledge (Traditional Ecological Knowledge) from their perceptions of habitats and species. Following our earlier work in La Parguera, Southwest Puerto Rico, ... -
Development of a Landforms Model for Puerto Rico and its Application for Land Cover Change Analysis
(Caribbean Journal of Science, Vol. 43, No. 2, 161-171, 2007, 2007-12)Comprehensive analysis of land morphology is essential to supporting a wide range environmental studies. We developed a landforms model that identifies eleven landform units for Puerto Rico based on parameters of land ... -
Diet of feral goats in Mona Island Reserve, Puerto Rico
(Caribbean Journal of Science, Vol. 44, No. 2, 199-205, 2008, 2008-07)The presence of feral goats can have detrimental effects to insular ecosystems where native plants have evolved in the absence of these animals. Goat diet information is valuable in determining which species may be most ... -
Differences Between Epigeic Earthworm Populations in Tank Bromeliads from Puerto Rico and Dominica
(Caribbean Journal of Science, Vol. 42, No. 3, 380-385, 2006, 2006-12)Large differences were found between the abundance, biomass and distribution of epigeic earthworms in the bromeliads of montane forests in Puerto Rico and Dominica. In Dominica they occurred in more than 90% of plants and ... -
Distribution and Relative Abundance of Humpback Whales off Western Puerto Rico during 1995-1997
(Caribbean Journal of Science, Vol. 41, No. 1, 101-107, 2005, 2005-04)Observations of humpback whales (position, number and presence of calf) were obtained from a commercial whale-watching vessel during January to March 1995 to 1997 along the northwestern coast of Puerto Rico. These data ... -
Dynamics of shelf edge coral reef-associated macroalgae at La Parguera, Puerto Rico
(2009)Percentage cover of coral reef associated algae increased significantly from 2003 to 2007 at two shelf edge sites in southwest Puerto Rico (42.8 % to 75.3% at Weinberg Reef and 67.4% to 81.8% at El Hoyo). While the increase ... -
Ecophysiology of a Mangrove Forest in Jobos Bay, Puerto Rico
(Caribbean Journal of Science, Vol. 43, No. 2, 200-219, 2007, 2007-12)We studied gas exchange, leaf dimensions, litter production, leaf and litterfall chemistry, nutrient flux to the forest floor, retranslocation rates, and nutrient use efficiency of mangroves in Jobos Bay, Puerto Rico. The ... -
Effects of a marine fishery reserve and habitat characteristics in the abundance and demography of the red hind grouper, Epinephelus guttatus
(Caribbean Journal of Science, Vol. 45, No. 2-3, 348-362, 2009, 2009)No-take marine fishery reserves have been established worldwide to reduce the impact of overfishing in marine ecosystems and to restore depleted fishery stocks. In this study we used capture-markrecapture methodology to ... -
Effects of Hurricane Georges on the Resident Avifauna of Maricao State Forest, Puerto Rico
(Caribbean Journal of Science, Vol. 42, No. 1, 81-87, 2006-04)Hurricane Georges crossed the island of Puerto Rico on 21-22 September 1998. Maricao State Forest, a montane reserve in southwestern Puerto Rico, was struck by Georges after being spared by hurricanes since 1932. I documented ... -
First Report of a Quaternary Crocodylian from a Cave Deposit in Northern Puerto Rico
(Caribbean Journal of Science, Vol. 43, No. 2, 273-277, 2007, 2007-12)The first occurrence of crocodylians from the Quaternary of mainland Puerto Rico is reported from a cave in northern Puerto Rico: this record expands the distribution of crocodylians eastward in the Caribbean region during ... -
Floods, Habitat Hydraulics and Upstream Migration of Neritina virginea (Gastropoda: Neritidae) in Northeastern Puerto Rico
(Caribbean Journal of Science, Vol. 41, No. 1, 55-74, 2005, 2005-04)Massive upstream migrations of neritid snails (Neritidae: Gastropoda) occur in tropical and subtropical streams worldwide, but their seasonality and proximate causes are unknown. We monitored massive upstream migrations ... -
Flower Phenology and Sexual Maturation: Partial Protandrous Behavior in Three Species of Orchids
(Caribbean Journal of Science, Vol. 42, No. 1, 75-80, 2006, 2006-04)Plants have theoretically multiple alternatives for preventing self pollination and consequently the effect of inbreeding, such as sequential flowering, dichogamy and self–incompatibility to name a few. We investigated the ... -
Foraging Behavior, Home Range, Movements and Activity Patterns of Epicrates inornatus (Boidae) at Mata de Plátano Reserve in Arecibo, Puerto Rico
(Caribbean Journal of Science, Vol. 40, No. 3, 343–352, 2004, 2004-12)Observations of foraging behavior of the Puerto Rican boa (Epicrates inornatus) were performed at a cave entrance beginning one hour before sunset until one hour after sunrise. Boas captured bats from 1745 h to 0600 h, but ... -
Forests Surrounding the Joyuda Lagoon, Puerto Rico: 67 Years of Change
(Caribbean Journal of Science, Vol. 43, No. 1, 142-147, 2007, 2007-06)This study describes forest cover changes and the current vegetation in the area surrounding the Joyuda Lagoon in western Puerto Rico.Forest cover increased from 22 ha to 87 ha between 1930 to 1997. This increase is the ... -
Growth of Pinus caribaea hondurensis Relative to Spacing and Trunk Diameter on Two Soils in Puerto Rico
(Caribbean Journal of Science, Vol. 44, No. 2, 236-241, 2008, 2008-07)Analysis of 19-year-old planted Pinus caribaea var. hondurensis on clay and sandy soils in the mountains of Puerto Rico showed the suitability of both sites for tree growth to commercial size. Growth rates were compared ... -
Helminthora anomala sp. nov. (Liagoraceae, Rhodophyta) from Puerto Rico
(Caribbean Journal of Science, Vol. 41, No. 4, 834-842, 2005, 2005-12)A new species of Helminthora, H. anomala Vélez et Vega (Liagoraceae, Rhodophyta), is described from Puerto Rico. This new species has curved carpogonial branches in median positions on cortical fascicles, with dumbbell-shaped ... -
Hurricane-Related Vagrancy of Swainson’s Thrush and Veery in Puerto Rico
(Caribbean Journal of Science, Vol. 43, No. 1, 150-154, 2007, 2007-06)Low pressure waves that contributed to the formation of Hurricane Wilma in the western Caribbean produced westerly winds in the central Caribbean and Puerto Rico during the second week of October, 2005. On October 12 and ...