Juniper Publishers-Oceanography Open Access Journal

  Oceanography & Fisheries Open Access Journal Juniper Publishers Authored by Sahir Odhano Abstract Electrophoretic studies for the identification of ghost crabs (Ocypode rotundata and Ocypode ceratophthalma) using the SDS-PAGE were performed on protein patterns along the Sandspit coastal areas. The muscle tissues were used to estimate the molecular mass of proteins through SDS-PAGE electrophoresis. Electrophoretic settings were standardized to use 10% acrylamide resolving gel and 5% acrylamide stacking gel. A discontinuous buffer system was used following the protocols of Laemmli (1970) to observe the relative mobility and molecular weight of proteins. In O. rotundata total of 6 protein bands were resolved among them band-5 was found similar in size to the marker used (BSA = 66 kDa MW). Whereas in O. ceratophthalma total of 8 protein bands were resolved among them three protein bands (band-6, band-7, and band-8) were found to be higher in size than the mole...

  Juniper Publishers -  Journal of Oceanography Abstract An intense bloom of Tetraselmis sp., producing strong water discoloration was observed from December 28th of 2005 through January 10th of 2006 in the Valparaiso Bay (32º 57’S; 71º 33’W). Blooms of Tetraselmis sp. have never been reported in this bay, or along the coast of Chile. The confluence of a series of environmental conditions observed before and during the bloom such as: high solar radiation, anomalous UV radiation levels, high sea surface temperatures, water stratification and high nutrient concentrations may have contributed to the development of this unique event. Keywords:   Bloom tetraselmis sp ; High solar irradianc; Positive UV anomaly; Valparaiso bay; Chile Go to Introduction Algal blooms are recurring events in coastal regions frequently associated with high nutrients concentrations, particularly of phosphorus and nitrogen. In the Valparaiso Bay, southwesterly winds prevail during the spring and earl...

  Juniper Publishers -  Journal of Oceanography Abstract Coastal urbanization is often accompanied by the replacement of natural substrata by artificial structures, which causes coastal habitat modifications, losses of species richness, diversity and microhabitats diversity and favours the settlement of non-native species. The impact that coastal defence structures cause in the intertidal community is further favoured by the anthropic pressures produced in heavily populated areas (such as pollution or the collection of intertidal organisms). Among these, the effect of artificial lights on intertidal communities is practically unknown, even though that the behaviour of many intertidal vagile organisms is synchronized with circatidal and circadian rhythms. Considering that large areas of natural and artificial habitats are exposed to artificial illumination, this review exposes the current knowledge in this matter in order to evaluate the importance of this disregarded impact. N...

  Juniper Publishers -  Journal of Oceanography Opinion Offshore aquaculture is the practice of marine farming where the fish farm cages are placed further from the shores into deeper ocean areas. This helps in increasing the size of farms, reduces danger of accidents with marine traffic and the waste from cage is easily washed away with stronger currents in the open ocean. One major disadvantage is that such a cage requires sophisticated technology and large investments. India has over 8000 km of coastline with great potential for development of mariculture. The exclusive economic zones which can extend up to at least 200 nautical miles from the coast, as shown in (Figure 1) (left), gives India a vast area for developing mariculture. Most of this potential remains underutilized as the locals and regional authorities lack the technical know-how and transfer of technology from academia to industry and local companies is extremely poor. Offshore cage design present considerable ...

  Juniper Publishers -  Journal of Oceanography Abstract The U.S. Bureau of Ocean Energy Management (BOEM) has a congressional mandate and the U.S. Department of Energy (DOE) both have mandates to assess oceanic wind and oceanic wave energy and power resources and impacts; both structural and potentially ecological. Oceanic offshore winds and waves are viewed as being relatively steady sources of energy. However assessments of the amount of the wind resources and wave resources in U.S. coastal and oceanic environments have not been evaluated and have only been estimated by several rudimentary modeling efforts. As such, there are many National Oceanic & Atmospheric Administration (NOAA) National Data Buoy Center (NDBC) Marine Buoys which have collected considerable data on both wind and waves that can be harvested and evaluated for in-situ observations. Also the U.S. Department of the Interior, Bureau of Safety and Environmental Enforcement (BSEE) is charged with the develo...