Juniper Publishers-Oceanography Open Access Journal

  Juniper Publishers -  Journal of Oceanography Abstract Pakistani fisheries sector is a victim of “the tragedy of the commons”. This sector performance matches with the description of Gordon-Schaefer Model. Therefore, in this study maximum economic harvest levels of  B. spirata  from Sindh, Pakistan are estimated by using maximum sustainable yield (MSY) proxy for maximum economic yield (MEY). For this purpose, fishery input (effort) and fishery output (catch) data of  B. spirata  is analyzed by using two specialized fishery software CEDA (catch and effort data analysis) and ASPIC (a stock production model incorporating covariates). Three surplus production models viz. Fox Model, Schaefer Model and Pella-Tomlinson Model were used in CEDA along with three error assumptions viz. normal error assumption, log normal error assumption and gamma error assumption. Whereas, in ASPIC two surplus production models viz. Fox Model and Logistic Model were employed for da...

  Juniper Publishers -  Journal of Oceanography Abstract At present, the World experiencing a high level of pollution due to anthropogenic activity and increasing Carbon Dioxode (CO 2 ) level in the atmosphere, which resulted in the global climate change and global warming. The world population is increasing at the same time the technology has also developed. Various anthropogenic activities cause a major impact of rising temperature in the atmosphere. The researchers are focusing on the biological ways to reduce CO 2  in the atmosphere and suggested that marine microalgae is the most promising approach to capture the CO 2  in the atmosphere and microalgae have the potential to utilize CO 2  as a carbon source for growth. The microalgae biofixation process is the main concept of sequestration. This article discusses that CO 2  capture by microalgae is a most preferable method compared to employing other terrestrial plants for carbon capture. Keywords: ...

  Juniper Publishers -  Journal of Oceanography Abstract The invasive species  P. volitans  (Linnaeus, 1758) has presented a significant geographic advance considering its original distribution, since the Indo-Pacific it has reached the west coast of the Atlantic, including mainly the Caribbean Sea and the Gulf of Mexico. In this geographic advance, protected areas are included and it is a reference species of impact on native species. Size, weight and distribution of the lionfish were evaluated in this study, in the Veracruz Reef System, National Park of the Gulf of Mexico. In the period from May to June 2016, 30 organisms were captured, their size and weight were recorded, comparing these meristic data with previous records in the area and other sites. An average height (±SD) of 248.14±48.2mm was reported in the analysis of the results, indicating a considerable increase in the size of the species in this study. It can be inferred that  P. volitans  posse...

  Juniper Publishers -  Journal of Oceanography Abstract During our routine ecological survey conducted at Pulicat lagoon, the most diverse coelenterate belonging to 2 classes of scyphozoa ( Catostylus mosaicus, Acromitus flagellates, Cyanea capillata, Chrysaora hysoscella) and hydrozoa ( Porpita porpita) 4 families ( Catostylidae, Cyaneidae, Pelagiidae and Porpitidae) and 5 species were recorded. The Catostylus mosaicus was dominated at the Barmouth. A large amount of species occurred during the monsoon season 2013 to 2015. Cnidarians were washed ashore. During the study, the salinity levels were maximum value observed was 41 while the minimum value obtained was 38ppt. Hence, it is necessary to focus on conservation, monitoring and management strategies in places of Pulicat lagoon. Keywords: Jelly fish; Pulicat lagoon; Distribution Introduction Jelly fishes (Cnidaria), are well known bioindicators [ 1 ]. The incr...