Juniper Publishers-Oceanography Open Access Journal

  Oceanography & Fisheries Open Access Journal Abstract Upper ocean thermodynamic and biological responses between the two super cyclones namely Gonu (1-7 June 2007) and Kyarr (24 Oct – 02 Nov 2019) were investigated using multi-satellite datasets, and hycom model data. During Gonu, one strong cooling patch (>5.5°C) observed but in the case of Kyarr it is 3.8°C was observed along its track. The locations of these cold patches are highly correlated with the relative depth of the 26°C isotherm and mixed layer depth (MLD) and upper ocean heat content (UOHC). The enhancement of surface chlorophyll a (chl-a) concentration was detected in these cold regions as well, mainly due to the TC-induced mixing and upwelling. Moreover, the existing ocean cyclonic eddy has been found to significantly modulate the magnitude of surface cooling and chl-a increase during the Kyarr period. The possible causes of intensity change of cyclones were also explored with UOHC. Upper ocea...

  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 Opinion Different climate models have concluded that the average global temperature has increased in the last century [ 1 ]. This change in global temperature has influenced climate conditions worldwide affecting population dynamics (e.g. phytoplankton communities) in ecosystems in different ways [ 1 - 3 ]. In terms of aquatic ecosystems, evidence has shown that some photo synthetic microorganisms may adapt and thrive successfully under warmer climatic conditions, while other cannot [ 4 ]. The toxigenic cyanobacterium  Microcystis aeruginosa  (Kutzing) Kutzing 1846 is a gram-negative photosynthetic prokaryote adapted to a wide range of environmental conditions in mesotrophic and eutrophic aquatic ecosystems [ 5 ]. The main family of toxins synthetized by  M. aeruginosa  are microcystins (hepatotoxins); in nature, more than 90 microcystin congeners are known [ 6 ]. Microcystins are water-soluble and stable mole...

  Juniper Publishers -  Journal of Oceanography Abstract The samples were collected once in three months during 2015 from intertidal zone of Shatt al-Arab River from eight sampling sites. For the purpose of evaluating the spatial and seasonal variations in the diversity, density and abundance of invertebrates in relation to diversity of Aquatic plant and related the dynamics of water temperature, salinity, water transparency, pH, dissolved oxygen, phosphate and nitrate. The diversity and distribution patterns of certain invertebrate's species were clearly related to plants and water quality as evident from the present study. In the present study tried to assess indices invertebrate species as Shannon-Weaver index, Simpson's index, and Index of Evenness species in eight sites at Shore of Shatt Al- Arab River and predict the state of water according to species and physicochemical parameters. The indices were evaluated at individual species level and varied species to species. In...