Browsing Facultad de Artes y Ciencias by Issue Date
Now showing items 41-58 of 58
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Bird Community Dynamics and Habitat Associations in Karst, Mangrove and Pterocarpus Forest Fragments in an Urban Zone in Puerto Rico
(Caribbean Journal of Science, Vol. 44, No. 3, 402-416, 2008, 2008-12)Puerto Rico’s forest cover decreased to less than 10% in the early 1900’s leaving few forest patches available for migrant and resident birds. In this process of deforestation karst hills and coastal wetlands have been ... -
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; ... -
Movement of fishes (Grunts: Haemulidae) across the coral reef seascape: A review of scales, patterns and processes
(Caribbean Journal of Science, Vol. 45, No. 2-3, 304-316, 2009, 2009)Reef fish movements over short and long time frames have important consequences for identifying essential fish habitat, quantifying ecological flows across the seascape and designing marine reserves. We use grunts (Haemulidae) ... -
Coral Reef Ecosystem Studies: Integrating Science and Management in the Caribbean
(Caribbean Journal of Science, Vol. 45, No. 2-3, 134-137, 2009, 2009) -
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 ... -
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, ... -
Nutrient distribution across the insular shelf of La Parguera, Puerto Rico: assessment by algal tissue nitrogen
(Caribbean Journal of Science, Vol. 45, No. 2-3, 181-190, 2009, 2009)A survey was conducted to investigate possible presence of an inshore to shelf edge gradient in % nitrogen (%N) and stable nitrogen isotope ratio (δ 15 N; ‰ vs. air) in tissues of the rhodophyte Acanthophora spicifera and ... -
Nocturnal fish movement and trophic flow across habitat boundaries in a coral reef ecosystem (SW Puerto Rico)
(Caribbean Journal of Science, Vol. 45, No. 2-3, 282-303, 2009, 2009)Few studies have quantified the extent of nocturnal cross-habitat movements for fish, or the influence of habitat adjacencies on nutrient flows and trophodynamics. To investigate the patterns of nocturnal cross-boundary ... -
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 ... -
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 ... -
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, ... -
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 ... -
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 ... -
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, ... -
Observations on morphology and the taxonomic affiliation of Coelothrix irregularis (Harv.) Børgesen (Rhodymeniales, Rhodophyta)
(Caribbean Journal of Science, Vol. 46, No. 1, 71-82, 2010, 2010)Coelothrix irregularis (Harv.) Børgesen, until recently a member of the Rhodymeniaceae, has had several familial assignments within the Rhodymeniales. While suggested by some that the genus belonged in the Champiaceae on ... -
Observations on morphology and the taxonomic affiliation of Coelothrix irregularis (Harv.) Børgesen (Rhodymeniales, Rhodophyta)
(Caribbean Journal of Science, Vol. 46, No. 1, 71-82, 2010, 2010)Coelothrix irregularis (Harv.) Børgesen, until recently a member of the Rhodymeniaceae, has had several familial assignments within the Rhodymeniales. While suggested by some that the genus belonged in the Champiaceae on ...