Browsing Facultad de Artes y Ciencias by Title
Now showing items 42-58 of 58
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Sediment transport and the distribution of shallow-water gorgonians
(Caribbean Journal of Science, Vol. 45, No. 2-3, 254-259, 2009, 2009)The objective of this study was to provide evidence supporting the contention that sediment transport (bedload) is a major environmental factor controlling the distribution of shallow-water gorgonian species. Gorgonians ... -
Self-compatibility of microgametophytes in Heliconia bihai (Heliconiaceae) from St. Lucia
(Caribbean Journal of Science, Vol. 44, No. 2, 145-149, 2008, 2008-07)Potential for physiological self-incompatibility in Heliconia bihai as a mechanism to promote outcrossing was studied in St. Lucia. Our results do suggest that H. bihai is self-compatible. However, plants vary in their ... -
Sexual dimorphism in the timing of flowering in two dioecious trees in a subtropical wet forest, Puerto Rico
(Caribbean Journal of Science, Vol. 46, No. 1, 88-95, 2010, 2010)In dioecious plants, sexual selection can promote the evolution of differences in the flowering display of males and females. Theory indicates that male reproductive success is principally limited by the number of mates, ... -
Shore Fishes from Islands of the Mona Passage, Greater Antilles with Comments on Their Zoogeography
(Caribbean Journal of Science, Vol. 41, No. 4, 716-743, 2005, 1995-12)The geology, physical conditions, size, and position within the Caribbean may all play a role in shaping the fauna of islands in the Mona Passage. This paper describes the ichthyofauna of Mona, Monito,and Desecheo by ... -
Spatial and temporal patterns in reef sediment accumulation and composition, southwestern insular shelf of Puerto Rico
(Caribbean Journal of Science, Vol. 45, No. 2-3, 138-150, 2009, 2009)Effects of terrigenous sedimentation are considered a serious threat to Puerto Rico’s coral reefs. This study assesses: 1) the composition of sediments accumulating at reef sites on the southwestern shelf of Puerto Rico; ... -
Spatial and temporal patterns of water quality indicators in reef systems of southwestern Puerto Rico
(Caribbean Journal of Science, Vol. 45, No. 2-3, 168-180, 2009, 2009)Baseline information on the water quality status of coral reefs and associated habitats of La Parguera, southwestern PR, is presented. Measurements of temperature, salinity, chlorophyll a , turbidity, fluorescence of ... -
Spatial and temporal variability in juvenile coral densities, survivorship and recruitment in La Parguera, southwestern Puerto Rico
(Caribbean Journal of Science, Vol. 45, No. 2-3, 269-281, 2009, 2009)Juvenile coral survivorship (the proportion of juvenile colonies surviving from t 1 to t 2 ) was assessed by counting, photographing and mapping all juveniles found in 2003 within random permanent 0.25m 2 quadrats at four ... -
Structural Control on Cave Development in Cretaceous Limestone, Southern Puerto Rico
(Caribbean Journal of Science, Vol. 40, No. 2, 276–280, 2004, 2004-08)Surveys of Sistema Los Chorros (815m length) and Sistema Vientos (600 m) represent the first cave maps from southern Puerto Rico published in the last quarter century. These are the largest caves known in that area. They ... -
Substratum effects on the growth and survivorship of the sponge Desmapsamma anchorata
(Caribbean Journal of Science, Vol. 44, No. 1, 83-89, 2008, 2008-12)La diversidad de los invertebrados sésiles de los arrecifes coralinos depende enormemente de las asociaciones en el substrato y de las interacciones entre especies. En este trabajo describimos efectos asociados al substrato ... -
Temporal variability and impact of coral diseases and bleaching in La Parguera, Puerto Rico from 2003-2007
(2009)Most coral reefs in the wider Caribbean have been showing alarming signs of decline in recent years. Coral diseases and bleaching were monitored seasonally from 2003 to 2007 using the modified CARICOMP protocol with a ... -
The Distribution of Herbivorous Coral Reef Fishes within Fore-reef Habitats: the Role of Depth, Light and Rugosity
(Caribbean Journal of Science, Vol. 45, No. 2-3, 247-253, 2009, 2009)Examining the relationship between habitat characteristics and utilization patterns by herbivorous fishes on coral reefs will add to our understanding of the factors that influence the abundance and distribution of this ... -
The life history of Helminthora anomala (Nemaliales, Rhodophyta) in culture
(Caribbean Journal of Science, Vol. 44, No. 3, 355-360, 2008, 2008-12)The life history of Helmithora anomala Vélez & Vega (Nemaliales, Rhodophyta), collected from Puerto Rico was examined in culture. Carpospores from monoecious plants germinated to form freeliving,uniseriate filamentous micro ... -
The Occurrence of Stemonitis Splendens (Myxomycota: Stemonitales) on Rhizophora Mangle
(Caribbean Journal of Science, Vol. 40, No. 2, 273-276, 2004, 2004-08)We reported the occurrence of the myxomycete Stemonitis splendens on red mangrove,Rhizophora mangle. Although S. splendens was reported previously from Puerto Rico, its presence on R. mangle suggests that mangroves, although ... -
The Re-colonization Ability of a Native Earthworm, Estherella spp., in Forests and Pastures in Puerto Rico
(Caribbean Journal of Science, Vol. 42, No. 3, 386-396, 2006, 2006-12)Populations of some native earthworm species are decreasing or disappearing due to human activities like habitat disturbance and introduction of exotic earthworms. Habitat disturbance can cause changes in soil physical ... -
Variability of aspergillosis in Gorgonia ventalina in La Parguera, Puerto Rico
(Caribbean Journal of Science, Vol. 45, No. 2-3, 215-220, 2009, 2009)Temporal and spatial variability of prevalence of the fungal disease aspergillosis (ASP) affecting Gorgonia ventalina colonies was assessed at several reef sites in La Parguera, southwest Puerto Rico. During 2005 and 2006, ... -
Variation in Mycorrhizal Infection of the epiphytic orchid Ionopsis utriculariodes (Orchidiaceae) on different substrata
(Caribbean Journal of Science, Vol. 44, No. 1, 130-132, 2008, 2008-03) -
Variations in Morphology and Coloration in the Black Hamlet, Hypoplectrus nigricans(Teleostei: Serranidae)
(Caribbean Journal of Science, Vol. 40, No. 1, 150-154, 2004, 2004-04)Black hamlet (Hypoplectrus nigricans) was observed to vary in coloration and morphology in Puerto Rico, Mexico and Belize. H. nigricans from Puerto Rico exhibited a larger, grayish body (pectoral fins transparent), with ...