scholarly journals Spatial and Temporal Distribution of a Multiple Gear Fishing Fleet Exploiting the Caribbean Sea and North Brazil Shelf Large Marine Ecosystems

2020 ◽  
Vol 12 (2) ◽  
pp. 100-112
Author(s):  
Carolina Mercedes Laurent Singh ◽  
Jamerson Aguiar‐Santos ◽  
Efrem Jorge Gondim Ferreira ◽  
Eucaris del Carmen Evaristo ◽  
Carlos Edwar de Carvalho Freitas
Keyword(s):  
Temporal Distribution ◽  
Caribbean Sea ◽  
Marine Ecosystems ◽  
Spatial And Temporal Distribution ◽  
Fishing Fleet ◽  
Large Marine Ecosystems ◽  
North Brazil ◽  
The Caribbean

Temporal distribution and population structure of two congeneric species ofCucullanus(Nematoda: Cucullanidae) inOrthopristis ruberin Venezuela

2008 ◽  
Vol 82 (1) ◽  
pp. 69-76 ◽  
Author(s):  
A.K. Bashirullah ◽  
M.T. Diaz
Keyword(s):  
Temporal Distribution ◽  
Caribbean Sea ◽  
Congeneric Species ◽  
Mean Intensity ◽  
Qualitative And Quantitative ◽  
The North ◽  
Significant Difference ◽  
The Caribbean ◽  
Over Exploitation ◽  
Fish Hosts

AbstractThe qualitative and quantitative parameters of temporal distribution ofCucullanus tripapillatusandCucullanus chrysophrydesin the intestine ofOrthopristis ruberin the Caribbean Sea on the north of Margarita Island, Venezuela were analysed. A total of 540 fish were collected at random from the catch of commercial trawlers during 1982–83 and 1992–93. Both species ofCucullanuswere found throughout the year; prevalence and mean intensity ofC. tripapillatuswere higher than that ofC. chrysophrydes. A significant difference was found in infection between the two years of sampling. Female worms were more abundant than male in both years. Both species exhibited pronounced prevalence and maturity in September and March of each year, indicating seasonality. The patterns of occurrence of the two species ofCucullanusinO. ruberdid not change in the 10-year interval but the host size and number of parasites declined, which may be due to over-exploitation of definitive fish hosts.

scholarly journals Spatial and temporal distribution in density and biomass of two Pseudodiaptomus species (Copepoda: Calanoida) in the Caeté river estuary (Amazon region - North of Brazil)

2006 ◽  
Vol 66 (2a) ◽  
pp. 421-430 ◽  
Author(s):  
A. Magalhães ◽  
R. M. Costa ◽  
T. H. Liang ◽  
L. C. C. Pereira ◽  
M. J. S. Ribeiro
Keyword(s):  
Salinity Gradient ◽  
River Estuary ◽  
Temporal Distribution ◽  
Dry Weight ◽  
Temporal Variations ◽  
Spatial And Temporal Distribution ◽  
Regression Parameters ◽  
North Brazil ◽  
Density And Biomass ◽  
Copepod Biomass

Spatial and temporal density and biomass distribution of the planktonic copepods Pseudodiaptomus richardi and P. acutus along a salinity gradient were investigated in the Caeté River Estuary (North-Brazil) in June and December, 1998 (dry season) and in February and May, 1999 (rainy season). Copepod biomass was estimated using regression parameters based on the relation of dry weight and body length (prosome) of adult organisms. The Caeté River Estuary was characterized by high spatial and temporal variations in salinity (0.8-37.2‰). Exponential length-weight relationships were observed for both Pseudodiaptomus species. Density and biomass values oscillated between 0.28-46.18 ind. m-3 and 0.0022-0.3507 mg DW. m-3 for P. richardi; and between 0.01-17.02 ind. m-3 and 0.0005-0.7181 mg DW. m-3 for P. acutus. The results showed that the contribution of P. richardi for the secondary production in the Caeté River Estuary is more important in the limnetic zone than in other zones where euhaline-polyhaline regimes were predominant. However, it was not possible to observe a clear pattern of spatial and temporal distribution for P. acutus.

scholarly journals Remote sensing observations of the coherent and non-coherent ring structures in the vicinity of Lesser Antilles

2007 ◽  
Vol 25 (2) ◽  
pp. 331-340 ◽  
Author(s):  
R. C. Cruz Gómez ◽  
S. N. Bulgakov
Keyword(s):  
Fourier Transforms ◽  
Bottom Topography ◽  
Caribbean Sea ◽  
Height Anomaly ◽  
Lesser Antilles ◽  
Winter Period ◽  
Two Dimensional ◽  
Radon Transforms ◽  
North Brazil ◽  
The Caribbean

Abstract. The North Brazil Current Rings (NBCR) penetration into the Caribbean Sea is being investigated by employing a merged altimeter-derived sea height anomaly (TOPEX/Poseidon, Jason-1 and ERS-1, 2), the ocean surface color data (SeaWiFS) and Global Drifter Program information. Four strategies are being applied to process the data: (1) calculations of the Okubo-Weiss parameter for NBCR identification, (2) longitude-time plots (also known as Hovmöller diagrams), (3) two-dimensional Radon transforms and (4) two-dimensional Fourier transforms. A twofold NBCR structure has been detected in the region under investigation. The results have shown that NBC rings mainly propagate into the Caribbean Sea along two principal pathways (near 12° N and 17° N) in the ring translation corridor. Thus, rings following the southern pathway in the fall-winter period can enter through very shallow southern straits as non-coherent structures. A different behavior is observed near the northern pathway (~17° N), where NBC rings are thought to have a coherent structure during their squeezing into the eastern Caribbean, i.e. conserving the principal characteristics of the incident rings. We attribute this difference in the rings' behavior to the vertical scales of the rings and to the bottom topography features in the vicinity of the Lesser Antilles.

Benthic decapod crustaceans (Crustacea: Decapoda) of Cubagua Island, Venezuela

Zootaxa ◽  
2007 ◽  
Vol 1557 (1) ◽  
pp. 33-45 ◽  
Author(s):  
IVÁN HERNÁNDEZ-ÁVILA ◽  
ALFREDO GÓMEZ ◽  
CARLOS LIRA ◽  
LEE GALINDO
Keyword(s):  
New Records ◽  
Caribbean Sea ◽  
Marine Ecosystems ◽  
Decapod Crustaceans ◽  
Northern Limit ◽  
Continuous Distributions ◽  
The Caribbean ◽  
Brazilian Province

The crustacean decapod fauna of Cubagua Island in the Caribbean Sea, Venezuela, an island much affected by coastal upweling, was surveyed. A total of 178 species from 41 families were recorded, of which 56 species were new records for the island; eigth genera and six species were new records for Venezuela. Most species had previously been recorded from the the Caribbean province, 19.7% were endemic for the province, 64.1% had affinities to the Brazilian province, 57.3% to the Texan and Carolinian provinces and 45.5% showed continuous distributions across the provinces but showing less endemism and more affinities with Brazilian province than the general trends of distributions of decapods in the Caribbean. It appears that upwelling processes around the island hinders the development of the typical Caribbean marine ecosystems. The proximity with the northern limit of the Brazilian province also affects the biodiversity of the island.

scholarly journals Seasonal and Interannual Modulation of the Eddy Kinetic Energy in the Caribbean Sea

2012 ◽  
Vol 42 (11) ◽  
pp. 2041-2055 ◽  
Author(s):  
Julien Jouanno ◽  
Julio Sheinbaum ◽  
Bernard Barnier ◽  
Jean Marc Molines ◽  
Julio Candela
Keyword(s):  
Kinetic Energy ◽  
Annual Cycle ◽  
Seasonal Cycle ◽  
Caribbean Sea ◽  
Eddy Kinetic Energy ◽  
Altimeter Data ◽  
Main Peak ◽  
Southern Caribbean ◽  
North Brazil ◽  
The Caribbean

Abstract Variability of the mesoscale eddy field in the Caribbean Sea is analyzed over the period 1993–2009 using geostrophic anomalies derived from altimeter data and a high-resolution regional model. The Colombia Basin presents the largest values of eddy kinetic energy (EKE) and its semiannual cycle, with a main peak in August–October and a secondary peak in February–March, is the dominant feature in the whole Caribbean EKE cycle. The analysis of energy conversion terms between low-frequency currents and eddies explains these peaks by enhanced baroclinic and barotropic instabilities, in response to seasonally varying currents in the region of the Guajira Peninsula. The semiannual acceleration of the atmospheric Caribbean low-level jet intensifies the southern Caribbean Current (sCC) twice a year in this region, together with its vertical and horizontal velocity shears. The asymmetry of the EKE seasonal cycle in the Colombia Basin is explained by a summer peak in the annual cycle of the whole sCC. Numerical results suggest that the arrival of more energetic North Brazil Current rings during part of the year have almost no impact on the seasonal cycle of EKE in the Colombia Basin. Instead, they are shown to contribute, together with the annual cycle of the Caribbean inflow through the southern passages of the Lesser Antilles, to an annual peak of EKE in the Venezuela Basin between May and August. At the interannual scale the mechanism is similar: interannual variability of the alongshore wind stress controls the speed of the southern Caribbean Current and the energy of the eddies in the Colombia Basin through instability.

Modulation of the inflow into the Caribbean Sea by North Brazil Current rings

2009 ◽  
Vol 56 (7) ◽  
pp. 1057-1076 ◽  
Author(s):  
Christian Mertens ◽  
Monika Rhein ◽  
Maren Walter ◽  
Kerstin Kirchner
Keyword(s):  
Caribbean Sea ◽  
Brazil Current ◽  
North Brazil ◽  
North Brazil Current ◽  
The Caribbean ◽  
North Brazil Current Rings

Sustainable development of Latin American and the Caribbean Large Marine Ecosystems

2017 ◽  
Vol 22 ◽  
pp. 1-8 ◽  
Author(s):  
Kenneth Sherman ◽  
Norma Patricia Muñoz Sevilla ◽  
Porfirio Álvarez Torres ◽  
Betsy Peterson
Keyword(s):  
Sustainable Development ◽  
Latin American ◽  
Marine Ecosystems ◽  
Large Marine Ecosystems ◽  
The Caribbean
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