Juniper Publishers-Oceanography Open Access Journal

  Juniper Publishers -  Journal of Oceanography Abstract Ecological models have been signficantly improved during the last decades, leading to more realistic predictions of coastal water processes under different forcing. Even though benthic sediments play an important role in biogeochemical processes occurring in the water column, in the past, very few modelling studies have taken into account these contributions. Recent efforts are being put into the implementation of coupled models, including the biogeochemistry processes occurring at both the upper benthic layer and the water column. This step is important, as along with the river supply, benthic nutrient regeneration can contribute significantly to the phytoplankton growth and the primary production. During the validation process, due to the important number of parameters involving these models, the application of Sensitivity Analysis for selecting the most important model parameters is highly needed. The importance of th...

  Juniper Publishers -  Journal of Oceanography Abstract The document briefly reviews the current status of statistical monitoring systems for fisheries and aquaculture. Emphasis is placed on small-scale fisheries and on small/medium water systems for freshwater aquaculture. Important sampling aspects such as determination of safe sample size and frequency of sampling are briefly presented and discussed. Also examined are survey operational aspects such as sustainability of data collection schemes and development/maintenance of databases used for the storage of primary data and the preparation of statistical reports. Keywords:  Statistical surveys; Sampling techniques; Small-scale fisheries; Freshwater aquaculture Go to Introduction Reliable data on fisheries and aquaculture is a key factor for the formulation of policies and management. Knowledge of the status of capture fisheries is a prerequisite for sound policy-development, better decision-making and responsible fish...

  Juniper Publishers -  Journal of Oceanography Abstract Recent report of  Hydrocharis morsus-ranae  from Kasmir Himalaya-India should serve as an early warning to the whole South Asia that this invasive species might be already in the phase of breaking down of the historical biogeographic barrier (Himalayas) and may be introduced in the adjoining areas of South-East Asia in the near future. Therefore, it is high time to initiate early detection and rapid response, the most cost- effective strategy with maximum chances of success in the management of plant invasions. Keywords:  Early warning; South Asia; Invasion; Biogeographic barrier Go to Introduction The genus  Hydrocharis L.  is widely distributed in tropical and temperate regions of the old world (Cook and Luond, 1982), and comprises of 3 species namely:  H. dubia  (Blume) Backer,  H. morsus- ranae  L. and  H. chevalieri  (De Wildeman) Dandy. Biogeographically, these...

  Juniper Publishers -  Journal of Oceanography Abstract Rare actinomycetes are the genera of actinomycetes other than Streptomycetes found in less expored environment. Some of the actinomycetes genera such as Sinomonas, Nocardia, Micromonospora, Actip lanes, Pseudonocardia, Actinomadura, Micrbobispora are known as the novel species. Rare actinomycetes have been found to produce extremely useful secondary metabolites. They have the good antagonistic activity against the various human pathogens. Hence, it is believed to give a promising output of commercially important product for pharmaceutical industries. Keywords:  Rare actinomycetes; Novel species; Antagonistic activity; Secondary metabolites; Antibiotics Go to Introduction Actinomycetes are widely spread in nature, which are recognized to produce novel secondary metabolites. Among the overall genera in nature, actinomycetes by itself produce 70-80% of the existing antibiotics. In that, Streptomycetes found to produce ...

  Juniper Publishers -  Journal of Oceanography Abstract Nearshore marine climate at the Port of Bethioua, located on the west of Algeria, were studied using real-time field data and climatological offshore data obtained from the UK Met Office. Total waves, swells in the offshore are hind-casted separately and were validated using buoy measurements were supplied by UKMO at a nominal cost. Shallow water wave transformations are modelled using the Teluray wave-current model to calculate shoaling, depth refraction and current refraction taking bathymetry and tidal flows from the TELEMAC flow model as inputs. The results are of particular importance in the context of planning of port and safe anchorage and movement and anchoring of vessels in the harbour area, in addition, for future developmental programs at the port of Bethioua. Go to Introduction Waves are of varied forms, frequencies and directions. To arrive at their climatological picture has always been a challenge to harbo...