Subjects -> EARTH SCIENCES (Total: 771 journals)
    - EARTH SCIENCES (527 journals)
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    - OCEANOGRAPHY (88 journals)

OCEANOGRAPHY (88 journals)

Showing 1 - 64 of 64 Journals sorted by number of followers
Hydrobiology     Open Access   (Followers: 39)
Deep Sea Research Part II: Topical Studies in Oceanography     Hybrid Journal   (Followers: 28)
Limnology and Oceanography     Hybrid Journal   (Followers: 26)
Estuaries and Coasts     Hybrid Journal   (Followers: 25)
Deep Sea Research Part I : Oceanographic Research Papers     Hybrid Journal   (Followers: 23)
Journal of Physical Oceanography     Hybrid Journal   (Followers: 21)
New Zealand Journal of Marine and Freshwater Research     Hybrid Journal   (Followers: 19)
Journal of Marine Biology & Oceanography     Hybrid Journal   (Followers: 19)
Progress in Oceanography     Hybrid Journal   (Followers: 18)
Coastal Engineering     Hybrid Journal   (Followers: 16)
Advances in Oceanography and Limnology     Open Access   (Followers: 16)
Maritime Studies     Open Access   (Followers: 13)
Journal of Oceanography     Hybrid Journal   (Followers: 12)
Advances in Statistical Climatology, Meteorology and Oceanography     Open Access   (Followers: 10)
Bulletin of Marine Science     Full-text available via subscription   (Followers: 9)
Atmospheric and Oceanic Science Letters     Open Access   (Followers: 9)
Fisheries Oceanography     Hybrid Journal   (Followers: 8)
Physical Oceanography     Hybrid Journal   (Followers: 6)
Open Journal of Marine Science     Open Access   (Followers: 6)
Limnology and Oceanography: Fluids and Environments     Full-text available via subscription   (Followers: 6)
Journal of Oceanography and Marine Science     Open Access   (Followers: 6)
Oceanography : Open Access     Open Access   (Followers: 6)
Limnology and Oceanography: Methods     Hybrid Journal   (Followers: 6)
Paleoceanography and Paleoclimatology     Full-text available via subscription   (Followers: 5)
Marine Science     Open Access   (Followers: 5)
Journal of Oceanology and Limnology     Hybrid Journal   (Followers: 4)
Journal of Coastal Development     Open Access   (Followers: 4)
Journal of Marine Science and Engineering     Open Access   (Followers: 4)
Ocean Yearbook Online     Hybrid Journal   (Followers: 4)
Limnology and Oceanography Letters     Open Access   (Followers: 4)
African Journal of Marine Science     Hybrid Journal   (Followers: 3)
Journal of Marine Science and Application     Hybrid Journal   (Followers: 3)
Oceanology     Hybrid Journal   (Followers: 3)
Journal of Operational Oceanography     Hybrid Journal   (Followers: 3)
Journal of Aquatic Sciences     Full-text available via subscription   (Followers: 3)
Journal of Ocean Engineering and Marine Energy     Hybrid Journal   (Followers: 3)
Limnology and Oceanography e-Lectures     Open Access   (Followers: 3)
Development and Applications of Oceanic Engineering     Open Access   (Followers: 2)
Regional Studies in Marine Science     Hybrid Journal   (Followers: 2)
Limnology and Oceanography: Bulletin     Hybrid Journal   (Followers: 2)
Journal of Ocean University of China (English Edition)     Hybrid Journal   (Followers: 1)
Scientia Marina     Open Access   (Followers: 1)
Western Indian Ocean Journal of Marine Science     Open Access   (Followers: 1)
Journal of Ocean Engineering and Science     Open Access   (Followers: 1)
Ocean Life     Open Access   (Followers: 1)
Acta Aquatica : Aquatic Sciences Journal     Open Access   (Followers: 1)
Journal of Ocean Engineering and Technology     Open Access   (Followers: 1)
Tropical Oceanography     Open Access   (Followers: 1)
Marine Systems & Ocean Technology     Hybrid Journal   (Followers: 1)
Marine Life Science & Technology     Hybrid Journal   (Followers: 1)
Asian Journal of Fisheries and Aquatic Research     Open Access  
Thalassas : An International Journal of Marine Sciences     Hybrid Journal  
Oceans     Open Access  
Journal of Agricultural and Marine Sciences     Open Access  
Turkish Journal of Maritime and Marine Sciences     Open Access  
Scientific Drilling     Open Access  
Oceanologia     Open Access  
Revista de Gestão Costeira Integrada     Open Access  
Revista Ciencias Marinas y Costeras     Open Access  
Egyptian Journal of Aquatic Research     Open Access  
China Ocean Engineering     Hybrid Journal  
Revista de Biología Marina y Oceanografía     Open Access  
Latin American Journal of Aquatic Research     Open Access  
Acta Oceanologica Sinica     Hybrid Journal  
Similar Journals
Journal Cover
Thalassas : An International Journal of Marine Sciences
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0212-5919 - ISSN (Online) 2366-1674
Published by Springer-Verlag Homepage  [2468 journals]
  • The Contribution of the South Asian Seas (SAS) Program to SDG 14: A
           Preliminary Assessment of the Targets (1–3)

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      Abstract: Abstract In order to promote and support the conservation, management, and improvement of the environment in the area, the South Asia Co-operative Environment Programme (SACEP) was founded by South Asian Sea member states (Bangladesh, India, Maldives, Pakistan, and Sri Lanka) and administered by SACEP. The rationale and structure for the SDG 14 country-level target indicators were revisited by South Asian Sea contracting parties to assess the importance of the South Asian Seas Conventions as well as Action Plans. The goal of the analysis was to evaluate the degree of severity of marine and coastal environmental conditions using data from existing scientific investigations and to formulate an effective way for its further sustainability. The multiple shortcomings were observed as an outcome of this investigation. These shortfalls need to be addressed amicably for the benefit of the region. To accelerate SDG 14 progress, this paper suggests the appropriate implementation pathway for the South Asia region.
      PubDate: 2024-07-05
       
  • Association of Mesoscale Features With Tropical Cyclone Tauktae

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      Abstract: Abstract An attempt has been made in this paper to examine the ability of various microphysical schemes (Morrison, Thompson, Lin) of Weather Research Forecasting (WRF) model in analyzing the convective features in a cyclone Tauktae over the Arabian Sea from May 14th to May 19th, 2021. This study explores the model’s performance of various schemes with MERRA2 observations. For rainfall, India Meteorological Department (IMD) daily rainfall dataset has been considered as observation. In this study, the evaluation of various model parameters has been done using statistical metrics and skill scores. Among the three schemes, Morrison scheme stands out to be most reliable scheme with high correlation and less BIAS and Root Mean Square error (RMSE). The convective parameters used for the study of cyclonic activity are rainfall (RF), cloud top temperature (CTT), lifted index (LI), total precipitable water (TPW), convective available potential energy (CAPE), convective inhibition (CIN), sea level pressure (SLP), sea surface temperature (SST), geo potential height (GPH), Storm Relative Helicity (SRLH), composite reflectivity (COMP_ref) and divergence. CAPE has been a useful parameter in analyzing the cyclone’s energy. The WRF model was found to be useful in forecasting severe convection related cyclonic activity.
      PubDate: 2024-07-04
       
  • Length–Weight Relationships and Relative Condition Factor of Six
           Commercially Important Clupeoid Species (Teleostei: Clupeiformes) from
           Andaman Waters

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      Abstract: Abstract We collected fishes from the coastal artisanal fishers of the south Andaman Islands between November 2021 to October 2022. In this study, we examined 2776 clupeoid specimens, which includes Herklotsichthys quadrimaculatus (1110), Sardinella fimbriata (459), Amblygaster sirm (185), Anodontostoma chacunda (351), Dussumieria acuta (231) and Stolephorus indicus (440). The sex ratio was ideal except for S. indicus, which showed male dominance. The length–weight relationship was established using linear regression analysis (W = a × TLb) and the relative condition factor was expressed as Kn = W/(a*TLb). In this study, we got high coefficient of determination values for all species (r2 ≥ 0.90). The slope values (b) of the linear regressions in the pooled data set varied among species from 2.907 to 3.529. The Kn values were within the range 1.004 to 1.005, and this range was not significantly varied (p > 0.05) from the ideal threshold value of 1. This study addresses the data deficiency on clupeoid fisheries in the region to establish a foundation of baseline knowledge.
      PubDate: 2024-07-03
       
  • Length-Weight Relationships of Eight Fish Species Collected as Bycatch
           from Deep-Sea Shrimp Trawls Operated in the Arabian Sea

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      Abstract: Abstract This study establishes length-weight relationships (LWRs) for eight demersal fish species (Dactyloptena orientalis, D. papilio, Minous dempsterae, M. trachycephalus, Pterygotrigla macrorhynchus, Rogadius asper, Lythrichthys longimanus, Sorsogona tuberculata) for the first time. We collected fish specimens caught as trawl bycatch at depths of 200–420 m from Sakthikulangara fishing harbour, Kerala, India, between September 2021 and December 2022. Deep-sea shrimp trawl nets used had a mesh size ranging from 30 to 50 mm in the net body and 18–26 mm at the cod-end. Estimated b values ranged from 2.19 (Minous trachycephalus) to 3.55 (Pterygotrigla macrorhynchus). Most species deviated from the isometric growth value (b = 3), except for Dactyloptena orientalis. High coefficients of determination (r²) were obtained for the LWRs (0.94–0.97), indicating strong relationships. These LWR estimates are valuable for updating the FishBase database and understanding resource characteristics of poorly studied deep-sea demersal fishery resources in the Indian Exclusive Economic Zone (EEZ).
      PubDate: 2024-07-03
       
  • Palaemonid Shrimps from Lakshadweep Archipelago, India with a New Species
           of Periclimenes Costa, 1844

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      Abstract: Abstract Periclimenes pitti sp. nov. is described from the Pitti Islet, Lakshadweep, India. The new species can be distinguished from its congener P. affinis (Zehntner, 1894) by the number of rostrum teeth, presence of single spine on the distal margin of third segment of antennular peduncle, and second pair of pereiopods long and robust with 3 distinct teeth on the inner margin, tips of claw curved with tuft of setae on distal margins. In addition, we have documented the Laomenes tigris Marin, 2009 associated with crinoid and Cuapetes seychellensis (Borradaile, 1915) from Lakshadweep. L. tigris is reported for the first time from India and C. seychellensis is new to Lakshadweep.
      PubDate: 2024-06-26
       
  • First Confirmed Stranding of a Juvenile fin Whale, Balaenoptera Physalus
           (Linnaeus, 1758), in the Northeastern Mediterranean Sea

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      Abstract: Abstract The body of a 13.5 m long male fin whale calf (Balaenoptera physalus, Linnaeus, 1758) was found stranded in Mersin Bay on 13 May 2021. The aim of this study was to present its external examination. The carcass of the juvenile was brought to Mersin University Marine Life Museum and examined extensively. It was observed that the integrity of the body was preserved, while the skin was disintegrated and had localized lesions. It was seen that a significant part of the soft tissues in the head were damaged and the jawbone and cranium remained attached to the body. A complete fracture of the radius and ulna of the left pectoral fin was observed and blood accumulation was noted in the thoracic part due to 10–20 days of decomposition. The left pectoral fin was attached to the body only by skin. The calf’s stomach was empty and it was thought to have been suckled by its mother. The complete breakage of the left pectoral fin could have been caused by a possible ship collision. The accumulation of blood in the thoracic region is probably due to the collapse of organs inside the body. Lesions and deformations on the skin and loss of soft tissue on the head suggest that the carcass had been adrift at sea for 10 to 20 days. This study provides the first confirmed record of a fin whale stranded in Mersin Bay in Turkish waters.
      PubDate: 2024-06-22
       
  • Biodegradation of Seaweed-based Bioplastics Using Deep-sea Marine
           Bacterial Consortia

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      Abstract: Thin plastic films used for packing food materials are unsafe for consumers and are not readily degradable. Single-use plastic films accumulate in the environment and cause adverse effects in the food chain. In this study, Kappaphycus alvarezii, which has the value-added polymer carrageenan, was used for developing a bioplastic film along with the plasticizer polyethylene glycol (PEG 3000). Different concentrations of seaweed were used (3%, 4% and 5% dry weight), of which 4% had a higher tensile strength than the other concentrations. The physical and mechanical properties of the developed plastic films, such as thickness, tensile strength (TS), water vapor transmission rate (WVTR), oxygen transmission rate (OTR) and color, were tested for packaging applications in the food industry. A higher concentration of seaweed increased the WVTR, and a lower concentration increased the OTR. In addition, the biodegradation of the developed bioplastic was tested using isolated deep-sea microbial consortia to meet environmental standards. A deep-sea marine microbial consortium (Bacillus paralicheniformis G1, Bacillus subtilis G2, Bacillus subtilis Z1, and Enterobacter cloacae subsp. dissolvens Z2) degrades seaweed (Kappaphycus alvarezii)-derived bioplastic under buried soil conditions. The maximum degradation (88%) in the 5% (w/v) bioplastic film was observed within 10 days of incubation. Graphical
      PubDate: 2024-06-18
       
  • Length-Based Fishery Status of Indian White Prawn (Penaeus Indicus,
           Milne-Edwards, 1837) in the Northern Waters of the Oman Sea (Iran)

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      Abstract: Abstract Population dynamics parameters and exploitation ratio of the Indian white prawn (Penaeus indicus) were studied from August 2019 to February 2022 and data collected from three landing places (Konark, Pozem and Gowatar). During the duration of the study, 504 specimens of shrimp were analyzed in the laboratory. The mean carapace length of male and female shrimp was 36 ± 22 and 40 ± 25 mm, individually, while the mean weight of male and female shrimp was 43 ± 26 and 51 ± 29 g, respectively. The range of male and female shrimp carapace length was (30–58) and (32–70) mm individually. The result of relationship among length and weight of male shrimp carapace was W = 0.0003×CL3.07 (n = 204, R2 = 0.82, 95% C.I of b = 2.52–3.61) and female shrimp carapace W = 0.0001 ×CL3.18 (n = 300, R2 = 0.86, 95% C.I of b = 2.63–3.72). The population dynamics indices of Indian white prawn of females and males were carapace infinite length (Linf) 73 and 69 mm, natural mortality (M) 1.47 and 1.70 per year, growth coefficient (K) 1.14 and 1.39 per year, total mortality (Z) 1.93 ± 0.55 (95% C.I = 1.38–2.48) and 1.99 ± 0.02 (95% C.I = 1.97–2.01), fishing mortality (F) 0.46 and 0.29 per year, exploitation coefficient (E) 0.24 and 0.15, respectively. Exploitation rate (U), yearly overall stock at beginning of the year were calculated as 0.2 and B0 = 1430 T respectively, Yearly normal standing stock, Bt= 635 T were estimated. The exploitation ratio maximum sustainable yield, EMSY = 0.50, 0.52, fishing mortality maximum sustainable yield, FMSY=1.5, 1.9. Value of F/Fmsy was less than 1 which shows considered desirable. According to the calculated parameters, this species is not overfishing pressure (Healthy stock /under fished stock).
      PubDate: 2024-06-18
       
  • Surgeonfishes (Teleostei: Acanthuridae) of the Socotra Archipelago:
           Diversity and Distributional Biogeography, with Two New Records

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      Abstract: Abstract An updated account of the exceptional diversity of surgeonfishes from the Socotra Archipelago is provided. Thirty species of four genera (Acanthurus, Ctenochaetus, Naso and Zebrasoma) are reported, including 25 species positively recorded based on underwater observations and photographs, and partly by samples. Acanthurus bariene and A. xanthopterus are recorded from the Archipelago for the first time. Additional five species are reported based on visual observations, pending further documentation. With likely 30 species the Archipelago hosts about the entire surgeonfish diversity of wider Arabia (31 species). The 25 documented species still exceed by far the richness of any other Arabian ecoregion. A species account, accompanied by photographs, provides distinctive characters and distribution details, including records from the Arabian region. The distributional biogeography of the family pertinent to the Socotra Archipelago and the Arabian region is analysed in the context of the Western Indian Ocean. Two main Arabian units are identified: a ‘Red Sea unit’, and a ‘Gulfs-eastern Arabia unit’. Both units do form a discrete “pan-Arabian” cluster opposite to a wider northern and western Indian Ocean cluster. The Socotra Archipelago is excluded from pan-Arabia, yet represents also an outgroup within the other cluster, underscoring its transitional biogeographic position. Accordingly, the Archipelago hosts eight species whose ranges are restricted to either main cluster, Arabia (3) or the adjacent northern and western Indian Ocean (5). The Acanthuridae thus strongly contrast overall distributional patterns of coastal and reef fishes in Arabia, and do not conform to major biogeographic schemes.
      PubDate: 2024-06-18
       
  • Understanding the Spread of Round Goby (Neogobius melanostomus) (Pallas
           1814) Along the Southeastern Black Sea Coastline

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      Abstract: Abstract From 2010 to 2014, a seasonal study on round goby (Neogobius melanostomus) population dynamics was undertaken in the Southeastern Black Sea and Western Black Sea (Sakarya Shelf and Thrace littoral region). The population of N. melanostomus was highest (mean 23.8 kg/km2) in the coastal shelf regions where there is large river discharge, compared to the 30–60 m and 60 m and deeper depths of the littoral region, during the five-year monitoring period. On the other hand, biomass was found to decrease gradually over the time-series. When a longer time-scale is accounted for their abundances as part of the benthic-pelagic community are shown to have increased over the past three decades, from 0.09% in the 1990s, to 0.14% in the 2000s, to and 0.34% in the 2010s in this study. As benthic and other top predators have been depleted in the Southern Black Sea especially in the 2000s, the round goby population has significantly increased in response, likely due to a reduction of predators. This increase in round goby population, an important opportunistic species with a wide environmental niche is an important indicator for the macro faunal change in the South Black Sea ecosystem.
      PubDate: 2024-06-15
       
  • Estimating Length-Weight Relationship and Condition Factor of Tripletail,
           Lobotes surinamensis Using a Linear Mixed-Effects Modelling Approach

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      Abstract: Abstract Estimating the length-weight relationship and condition factor in fish relies on the quantitative traits in length and weight, with the expression of the two not only influenced by genetics but also heavily influenced by environmentally-linked variables. Yet, the conventional estimation of the length-weight parameters typically does not incorporate such information about the individuals. In the present study, we estimated length-weight relationship and the condition factor of Lobotes surinamensis using a linear mixed-effects modelling approach. Length and weight data were collected between 2019 and 2021 from Malindi-Ungwana Bay region in different seasons. A total of six models, including a generalised linear model (GLM), a linear regression model (LM), and four linear mixed-effects models (LMMs), with the latter incorporating the spatio-temporal information for the individuals, were evaluated. The LMM with intercepts and slopes randomly varying among fishing grounds was selected based on AIC values. For the overall dataset, the model estimated a (intercept) = 0.032, with a 95% confidence interval (CI) of 0.010–0.101, and b (slope) = 2.814 (CI: 2.526–3.098), indicating isometric growth. Samples from the small-scale fishery (SSF) and semi-industrial fishery (SIF) had isometric and negative allometry growths, respectively. The b value of the combined dataset estimated using the default LM indicated negative allometry. The overall dataset had a condition factor, K = 1.631 (CI: 1.595–1.667). The present results provide a basic description of the length-weight relationship and condition factor of L. surinamensis within Kenya and highlight the usefulness of LMMs in parameter estimations.
      PubDate: 2024-06-13
       
  • A Small Collection of Brachyuran Crabs (Crustacea: Decapoda) from Lamongan
           Waters, East Java, Indonesia

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      Abstract: Abstract The brachyuran crabs are one of the most diverse groups in the crustacean fauna, and their highest diversity has been confirmed to be occur at the Western Pacific Region, including Indonesia. Lamongan is located in East Java, Indonesia, and this regency has been acknowledged as the main source of the fisheries catch from East Java. However, information about the diversity of the marine crabs in this location is scarce, due to the main studies on crabs in this region were only focus on commercial crabs, such as Portunus pelagicus. Therefore, this study aims to provide preliminary data on the diversity of crabs in Lamongan waters, East Java, Indonesia. A short survey in September 2022, was conducted to observe and explore the crab biodiversity in this area. As a result, a total of six species of brachyuran crabs from four families (Eriphidae, Menippidae, Portunidae dan Vanuridae) were found in the intertidal and reef zone of this water, Eriphia ferox (Koh and Ng Raffles Bull Zool 56(2):327'355, 2008); E. sebana (Shaw and Nodder Naturalist's Miscellany: 15, 589'612, 1803), Myomenippe hardwickii (Gray In: The Zoological Miscellany, 1831), Thalamita crenata (Rüppell Br'nner HL, 1830); T. danae (Stimpson Proc Acad Nat Sci Philadelphia 10:31'40, 1858) and Varuna litterata (Fabricius Proft et Storck, 1798). The result of this study may fill the gap about in information about the diversity of crabs in Lamongan water, East Java, Indonesia, as only 20 species of the marine crabs were previously recorded.
      PubDate: 2024-06-12
       
  • Diadema setosum Chemical Compounds with GC-MS Analysis as a Triple
           Inhibitor Antiviral Covid-19

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      Abstract: Abstract Marine echinoderms, specifically the sea urchin species Diadema setosum, may hold promise in the medical field as potential sources of antiviral agents for Covid-19. Recent research focused on identifying the compounds within their extracts and their effectiveness as inhibitors for the 3CLpro, RdRp, and ACE2 proteins through in silico modelling. This research begin with extraction and GC-MS analysis to identify the contents of the extract; the identified compounds were analyzed by molecular docking to determine their potential as antivirals. A compound exhibited a favourable Lipinski profile and low toxicity prediction, suggesting its potential as a viable antiviral candidate. The results showed that there was one compound, namely 5 H-Isoindole[1,2-b][3]benzazepine-5-one, 7,8,13,13a-tetrahydro-10-hydroxy-3,4,12-trimethoxy- which has the potential to as an antiviral with the support of druglikeness profile and prediction of its toxicity. While additional research is necessary to comprehend its therapeutic potential fully, the study’s findings showcase the compound’s potency as a promising antiviral agent.
      PubDate: 2024-06-12
       
  • Biological Monitoring of the Northern Shores of the Persian Gulf by
           Examining Sea Water, Sediment and Two Species of Fish

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      Abstract: Abstract One of Iran’s most significant coasts, the northern Persian Gulf coasts is constantly subject to pollution. The biological monitoring of these coasts using three components—seawater, sediments, and two fish species—Liza subviridis and Sphyraena jello—was the aim of this study. In this study, multiple measurement indicators were used to assess contamination. Several measuring indicators were included in this investigation to evaluate contamination. According to the findings, the majority of metals had Target Hazard Quotients (THQ) of less than 1. For both fish species, sulphur (S) metal had the highest Estimated Daily Intake (EDI) of any metal. All sampling areas were shallow regarding Risk index (RI) in class A and the degree of contamination. In certain places, the Geoaccumulation Index (Igeo) also revealed moderate to high Pb concentrations. Overall, the data show that environmental pollution has decreased, particularly in the sediments of these regions, and that the levels of metals in the muscle of both fish species were below World Health Organization standards. Future research looking into the trend of pollution in this area may greatly benefit from this study.
      PubDate: 2024-06-10
       
  • Analyzing Recreational Angling and Spearfishing for White Grouper
           (Epinephelus aeneus) in the North-Eastern Mediterranean Using YouTube Data
           

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      Abstract: Abstract In terms of sustainable fisheries management, there are serious problems in monitoring and collecting data on recreational fishing activities. Therefore, as a digital data source, the use of citizen science based on social media has become more important. This study aims to explore the harvest patterns of recreational angling and spearfishing of the white grouper (Epinephelus aeneus) in the north-eastern Mediterranean using existing knowledge that is publicly available on YouTube. For this purpose, a total of 591 white grouper individuals were identified from 571 YouTube videos uploaded between 2018 and 2022. Results showed that most videos were uploaded from the Northern Levant Sea Region (62%). A significant portion (88%) were videos of angling activities. Additionally, the majority of these angling videos (90%) were recorded on boats. In angling activities, artificial bait was used significantly more often than natural bait (p < 0.05). The majority of videos were published during the autumn season. During angling activities, 25% of the individuals were released back to the sea. The results of this study highlights the potential of YouTube as a complementary data source to monitor recreational fishing activities.
      PubDate: 2024-06-07
       
  • Correction to: Importance of Copepods in the Diet of Sardina pilchardus
           and Sardinella aurita : Preliminary Investigation in Bou Ismail Bay
           (Algerian Basin - SW Mediterranean Sea

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      PubDate: 2024-06-01
       
  • New Record of Ribbed Mitter, Vexillum interruptum (Anton, 1838), from
           India (Costellariidae: Neogastropoda)

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      Abstract: Abstract A species of gastropod Vexillum interruptum has been documented for the first time in Chota Balu, South Andaman, situated within the Andaman Islands along the Southeast of mainland India. Specimens were discovered in association with surface vegetation of the seaweed Halimeda opuntia (Linnaeus) Lamouroux, 1816, collected during low tide from the intertidal region. This species is characterized by uniquely intersected short brown parallel lines in the lower part of the ribs, setting it apart from other Vexillum species. The paper provides a brief description, illustration, and outlines the geographical distribution of this species worldwide. The findings highlight the significance of the Andaman Islands in hosting unique marine species and emphasize the need for continued research and conservation efforts in this ecologically rich region.
      PubDate: 2024-06-01
       
  • Analysis of Metal Accumulation in Some Marine Organisms Obtained from the
           Northern Sea of Marmara, Türkiye

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      Abstract: Abstract The aim of this study was to investigate the accumulation of elements (Se, As, Hg, Cr, Cd, Pb, Cu, Zn, Ni, Mn, Al, Fe, Co and V) in some marine organisms [Eriphia verrucosa (Forskål, 1775), Solea solea (Linnaeus, 1758), Mytilus galloprovincialis Lamarck, 1819, and Ulva lactuca Linnaeus, 1753] collected from the northern Sea of Marmara (Büyükçekmece, Silivri, Tekirdağ, and Şarköy) in 2019. For this purpose, element accumulation was measured using ICP-MS (Inductively Couple Plasma-Mass Spectrometer). The lowest and highest element concentrations in marine organisms are Fe (0.00 –7499.78 µg g−1 dw); Pb (0.00–31.12 µg g−1 dw); Cd (0.00–9.93 µg g−1 dw); Cu (2.98–775.63 µg g−1 dw); Cr (0.24–26.19 µg g−1 dw); Mn (1.53–427.60 µg g−1 dw); Al (0.00– 13,788.4 µg g−1 dw); Ni (0.00–56.26 µg g−1 dw); Hg (0.03–3.37 µg g−1 dw); Zn (0.00–1554.23 µg g−1 dw); As (0.00– 1.84 µg g−1 dw); Se (0.00–0.04 µg g−1 dw); V (0.13–72.54 µg g−1 dw); and Co (0.00–10.98 µg g−1 dw), respectively. According to these element values, Pb, Cd and Hg values were found to be higher in mussels than in crabs and exceeded the limits of the Turkish Food Codex. This study shows that more caution should be exercised when consuming marine organisms that exceed the limits of the Turkish Food Codex.
      PubDate: 2024-06-01
       
  • Assessing the Impact of Various Controlling Factors on Chlorophyll
           Concentration in the Arabian Sea Using Remotely Sensed Observations

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      Abstract: Abstract Present work examines a long-term trend (2003–2020) of the chlorophyll-a concentration and impact of various controlling factors on it in the Arabian Sea using robust non-parametric Man Kendall analysis, two-way ANOVA statistical test, and two-stage least square regression technique. Climatological means and interannual variations of chlorophyll-a (Chl_a) concentration and other controlling factors viz. Sea surface temperature (SST), Aerosol optical depth (AOD) and sea surface wind (SSW) have been analysed. From the seasonal variation of Chl_a and AOD it is observe that the highest Chl_a (1.4 mg/m3) is observed during July, August, September and October, and the highest AOD (0.8) is observed during June, July, August and September over the Arabian Sea. There was a two-month delay in the peak concentration of Chl_a/AOD, SSW; however, one month delay is observed in the peak concentration of Chl_a/SST in the Arabian Sea. A long-term trend of Chl_a concentration and SSW shows a decreasing trend, whereas SST and AOD show an increasing trend in the Arabian Sea. From ANOVA and two-stage least square regression it is observed that SST plays a significant role in influencing the decreasing trend of Chl_a in comparison to the other two controlling factors (AOD and SSW). A rise of 1% in SST results into a decrease of 0.138 percentage point in Chl_a concentration that is statistically significant at 1% significance level. The present work helps to understand the impact of various controlling factors on the ocean's primary productivity and the effect of climate change on the marine ecosystem.
      PubDate: 2024-06-01
       
  • Otolith Morphometrics and Variations Between Two Populations of Sillago
           sinica (Perciformes, Sillaginidae) in the East China Sea and the Yellow
           Sea

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      Abstract: Abstract Chinese sillago (Sillago sinica) is a newly recorded fish species from coastal waters of China. The calcified otolith locating within the inner ear of teleost is an important source of ecological information, and mastering the morphologic features of the otolith is fundamental to fisheries biology. However, the otolith morphology of S. sinica has not been thoroughly studied yet, thus the lack of adequate biological data seriously hampers sustainable utilization and scientific management of this species. This study aimed to explore the otolithic dimensions of S. sinica so as to detect the correlation between otolith morphology and fish body size, as well as compare the otolith shapes between two populations in the East China Sea (ECS) and the Yellow Sea (YS) so as to quantify the phenotypic variations to discriminate the southern and northern S.sinica populations. The variations of left and right otoliths were detected and significant differences were found in otolith shape except for the otolith weight (OW), area (A) and the minimum radius (Rmin). The regression relationship between body length (BL) and otolith weight (OW) was described with a linear function, with the expression of \(OW = 0.212 \times BL - 14.225,{R^2} = 0.876\) , while the optimal power function of body weight (BW) and otolith weight (OW) was \(OW=4.061\times B{W^{0.443}},{R^2}=0.787\) . In principal component analysis (PCA) based on shape indices, it showed that the cumulative contribution ratios of the first three principal components of bilateral otoliths reached 88.746% and 89.448%, respectively. Fourier analysis indicated that the first seven Fourier harmonics could separately explain 91.471% and 93.563% of the morphological characteristics. The discriminant accuracy rates reached up to over 95% both in the ECS and the YS populations. The obvious differentiation between these two sea areas was detected in the scattergram of the first two principal components, which might be related to local environmental conditions and living habits. The otolith shape variability could be used as a useful tool for population identification of S. sinica. The results contributed to the database on the otolith morphometric data of S. sinica in China and provided references for fishery management of Sillaginidae fishes.
      PubDate: 2024-06-01
       
 
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  Subjects -> EARTH SCIENCES (Total: 771 journals)
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OCEANOGRAPHY (88 journals)

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Hydrobiology     Open Access   (Followers: 39)
Deep Sea Research Part II: Topical Studies in Oceanography     Hybrid Journal   (Followers: 28)
Limnology and Oceanography     Hybrid Journal   (Followers: 26)
Estuaries and Coasts     Hybrid Journal   (Followers: 25)
Deep Sea Research Part I : Oceanographic Research Papers     Hybrid Journal   (Followers: 23)
Journal of Physical Oceanography     Hybrid Journal   (Followers: 21)
New Zealand Journal of Marine and Freshwater Research     Hybrid Journal   (Followers: 19)
Journal of Marine Biology & Oceanography     Hybrid Journal   (Followers: 19)
Progress in Oceanography     Hybrid Journal   (Followers: 18)
Coastal Engineering     Hybrid Journal   (Followers: 16)
Advances in Oceanography and Limnology     Open Access   (Followers: 16)
Maritime Studies     Open Access   (Followers: 13)
Journal of Oceanography     Hybrid Journal   (Followers: 12)
Advances in Statistical Climatology, Meteorology and Oceanography     Open Access   (Followers: 10)
Bulletin of Marine Science     Full-text available via subscription   (Followers: 9)
Atmospheric and Oceanic Science Letters     Open Access   (Followers: 9)
Fisheries Oceanography     Hybrid Journal   (Followers: 8)
Physical Oceanography     Hybrid Journal   (Followers: 6)
Open Journal of Marine Science     Open Access   (Followers: 6)
Limnology and Oceanography: Fluids and Environments     Full-text available via subscription   (Followers: 6)
Journal of Oceanography and Marine Science     Open Access   (Followers: 6)
Oceanography : Open Access     Open Access   (Followers: 6)
Limnology and Oceanography: Methods     Hybrid Journal   (Followers: 6)
Paleoceanography and Paleoclimatology     Full-text available via subscription   (Followers: 5)
Marine Science     Open Access   (Followers: 5)
Journal of Oceanology and Limnology     Hybrid Journal   (Followers: 4)
Journal of Coastal Development     Open Access   (Followers: 4)
Journal of Marine Science and Engineering     Open Access   (Followers: 4)
Ocean Yearbook Online     Hybrid Journal   (Followers: 4)
Limnology and Oceanography Letters     Open Access   (Followers: 4)
African Journal of Marine Science     Hybrid Journal   (Followers: 3)
Journal of Marine Science and Application     Hybrid Journal   (Followers: 3)
Oceanology     Hybrid Journal   (Followers: 3)
Journal of Operational Oceanography     Hybrid Journal   (Followers: 3)
Journal of Aquatic Sciences     Full-text available via subscription   (Followers: 3)
Journal of Ocean Engineering and Marine Energy     Hybrid Journal   (Followers: 3)
Limnology and Oceanography e-Lectures     Open Access   (Followers: 3)
Development and Applications of Oceanic Engineering     Open Access   (Followers: 2)
Regional Studies in Marine Science     Hybrid Journal   (Followers: 2)
Limnology and Oceanography: Bulletin     Hybrid Journal   (Followers: 2)
Journal of Ocean University of China (English Edition)     Hybrid Journal   (Followers: 1)
Scientia Marina     Open Access   (Followers: 1)
Western Indian Ocean Journal of Marine Science     Open Access   (Followers: 1)
Journal of Ocean Engineering and Science     Open Access   (Followers: 1)
Ocean Life     Open Access   (Followers: 1)
Acta Aquatica : Aquatic Sciences Journal     Open Access   (Followers: 1)
Journal of Ocean Engineering and Technology     Open Access   (Followers: 1)
Tropical Oceanography     Open Access   (Followers: 1)
Marine Systems & Ocean Technology     Hybrid Journal   (Followers: 1)
Marine Life Science & Technology     Hybrid Journal   (Followers: 1)
Asian Journal of Fisheries and Aquatic Research     Open Access  
Thalassas : An International Journal of Marine Sciences     Hybrid Journal  
Oceans     Open Access  
Journal of Agricultural and Marine Sciences     Open Access  
Turkish Journal of Maritime and Marine Sciences     Open Access  
Scientific Drilling     Open Access  
Oceanologia     Open Access  
Revista de Gestão Costeira Integrada     Open Access  
Revista Ciencias Marinas y Costeras     Open Access  
Egyptian Journal of Aquatic Research     Open Access  
China Ocean Engineering     Hybrid Journal  
Revista de Biología Marina y Oceanografía     Open Access  
Latin American Journal of Aquatic Research     Open Access  
Acta Oceanologica Sinica     Hybrid Journal  
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School of Mathematical and Computer Sciences
Heriot-Watt University
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