Juniper Publishers-Oceanography Open Access Journal

  Juniper Publishers -  Journal of Oceanography Short Communication The world is certainly a very small place. In ancient times we guessed it, now we know it for sure. The development of the civilization manifested itself in relevant development of the international trade, so relatively soon (by historical scale) the mankind - sorry, the humanityl-discovered all the oceans of the Earth and the routs to sail between them ( Figure 1 ). Today the rate of the world trade makes those routes too narrow for the cargo volumes needed to transport. The climate change, proving once more time that nothing could be only bad or only good, caused the melting of the Arctic ice, thus inviting us to use a shorter and no so overcrowded route, the Northeast Passage. The Russian name for it is the Northern Sea Route ( Figure 2 ). From the first look, this new trade direction is very attractive ( Figure 3 ). Since we already agreed, that nothing could be only good, there are some annoying "buts". ...

  Juniper Publishers -  Journal of Oceanography Short Communication The exotic taste of Hilsa shad  (Tenualosa ilisha, Clupeidae)  makes it one of the most economically significant edible fish communities found in the water of Bengal estuaries. A large part of the local inhabitants in and around the southern zones of West Bengal depends on the production of Hilsa in the estuarine water. However it has been reported recently that the average dimension of individuals from this Hilsa shad community are on a decline than those found in Bangladesh waters [ 1 ]. Pollutants mixing with the waters from anthropogenic sources and over exploitation without proper monitoring in the habitat areas can be held responsible for troughs in production of Hilsa. This fish community is known for its anadromous behavior and can migrate up to the rivers for spawning process [ 2 ]. The migration pattern of Hilsa shad population is a major concern in fishery research to identify most benefic...

  Juniper Publishers -  Journal of Oceanography Abstract Information on seawater level in extreme cases is crucial for coastal engineering and management. This research predicts the 100- year seawater level along the upper Gulf of Thailand. Long-term tidal records were gathered from the Marine Department at 3 stations, being Bang Pakong tidal station in Samutprakan province, Ta Chen tidal station in Samutsakhon province, and Mae Klong tidal station in Samutsongkhram province. The records covered more than 35 years. The annual highest high seawater levels were identified for each station. The Extreme value analysis from ordered data was utilized. All tidal stations along the upper Gulf of Thailand indicated an increasing trend of the seawater level. The highest seawater level in 100 years at Bang Pakong, Ta Chen, and Mae Klong tidal stations were expected to be +2.14m MSL, +2.42m MSL, and +2.30m MSL respectively. Applications of the results can be used for designs...

  Juniper Publishers -  Journal of Oceanography Abstract Human activities have been widely accepted as a driver of rapid trait change in wild fish stock globally with help of stressors. Fishing and invasive species are among the most important stressors which are affecting freshwaters fish stock from the lotic and lentic ecosystem. Study was carried out between the periods November 2015 to October 2016 from the Ghaghara river at Faizabad, India. The age composition of  C. mrigala  varied from 0+ to 8+ from the Ghaghara river at Faizabad. On the basis of sampled specimen in the length range from 15.7 to 88.7cm showed that the fish attained the mean length 25.3cm in 1+, 43.8cm in 2+, 57.5cm in 3+, 67.2cm in 4+, 74.7cm in 5+, 79.6cm in 6+, 83.9cm in 7+ and 87.3cm in 8+ age classes. The growth increments of  C. mrigala  was recorded as 25.3cm, 18.5cm, 13.7cm, 9.7cm, 7.5cm, 4.9cm, 4.3cm and 3.4cm for 1+ to 8+ age classes, respectively. The maximum growth increme...

  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...

  Juniper Publishers -  Journal of Oceanography Abstract The concentrations of Iron (Fe), Copper (Cu), Zinc (Zn), Lead (Pb), Cadmium (Cd), Chromium (Cr) and Manganese (Mn) in water, sediment and selected fish samples from Ureje water reservoir, Ado Ekiti, were determined using Atomic Absorption Spectrophotometer (AAS). A total of three samples each of water, sediment, fishes (Hemichromis fasciatus & Hepsetus odoe) were collected and analyzed for heavy metals. Data obtained were subjected to analysis of variance (ANOVA) test at 0.05%. The results showed higher levels of Zn (13.08±0.45mg/g) and Fe (2.10±0.56mg/g) in fish in comparison with other heavy metals examined. Chromium has exceeded the toxicity threshold in the muscle of the fishes in line with WHO standards in food. Cadmium was not detected in soil, while other elements detected were in trace amount below the Environmental Protection Agency allowable limits in soil. In water, except for Fe (1.25±0.0...