Subjects -> EARTH SCIENCES (Total: 771 journals)
    - EARTH SCIENCES (527 journals)
    - GEOLOGY (94 journals)
    - GEOPHYSICS (33 journals)
    - HYDROLOGY (29 journals)
    - 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
Journal of Oceanology and Limnology
Journal Prestige (SJR): 0.301
Citation Impact (citeScore): 1
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 2096-5508 - ISSN (Online) 2523-3521
Published by Springer-Verlag Homepage  [2468 journals]
  • Spatial-temporal distribution and fluxes of microplastics in Jiulong River
           basin

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      Abstract: Abstract Microplastics (MPs) pollution has emerged as a critical global environmental issue, for which rivers serve as key conduits for the transport of MPs from land to ocean. There remained a lack of clarity regarding the characteristics and transport patterns of MPs pollution in diverse environmental media and seasons within a river basin. The Jiulong River basin in Fujian, SE China was studied as case, whose spatial-temporal distribution, pollution characteristics, and transport dynamics of MPs in both surface water and groundwater were analyzed. Additionally, the features of MPs in different land use types during the dry season were examined. Results show that in wet season, the abundance of MPs in river water varied from 840 to 12 300 p/m3, with an average of 3 920 p/m3; in groundwater, the range was 740–1 820 p/m3, averaging 1 107 p/m3; and from 68 to 951 p/kg, with an average value of 265 p/kg in the soil (dry weight). In dry season, levels of MPs in river water ranged from 580 to 8 880 p/m3, with an average of 4 034 p/m3; groundwater exhibited a range of 860–14 980 p/m3, averaging 3 453 p/m3. Fibers consistently dominated the morphology of MPs, of which polyethylene terephthalate (PET) was identified as the predominant composition in each environmental medium. Our findings underscore the spatial and temporal variability in distribution and contamination characteristics of MPs across different media. Notably, MPs abundance in river water and groundwater exhibited a seasonal pattern, being higher in levels in dry season than in wet season. The downstream transport of MPs was facilitated by surface runoff, in which MPs in groundwater and surface water could complement to each other. Furthermore, population density and human activities were identified as influential factors on the distribution and abundance of MPs. This study revealed the order of magnitude of difference in annual estimates of MPs entering the sea among different models. Additionally, the interception volume by mangrove forest in the Jiulong River estuary was estimated approximately 1.51×1010 MPs particles per year. Ecological interception shall be considered when estimating the fluxes of MPs into the sea.
      PubDate: 2024-07-06
       
  • Identification and construction of lncRNA-miRNA-mRNA ceRNA networks
           associated with temperature changes in Sebastiscus marmoratus

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      Abstract: Abstract Sebastiscus marmoratus is one of the ideal fish species for offshore breeding, and temperature changes directly affect its physiological process. We performed whole-transcriptome sequencing of the liver tissues of S. marmoratus under heat stress (25 °C), normal condition (20 °C, the control), and cold stress (15 °C). A total of 376 differentially expressed genes (DEGs), 147 differentially expressed lncRNAs (DELs), and 40 differentially expressed miRNAs (DEMis) were detected under heat stress; 59 DEGs, 59 DELs, and 44 DEMis were detected under cold stress. Furthermore, a competing endogenous RNA regulatory network for the functional interaction of lncRNA-miRNA-mRNA was constructed, and GO and KEGG enrichment analyses showed that genes involved in maintaining homeostasis or adjusting to stress and stimulation were strongly activated during heat stress. Including heat-shock protein-related genes Hsp70, FKBP4, and Hspa4a regulated by dre-mir-205-5p; energy metabolism-related genes GCK, g6pca, and RFK regulated by dre-miR-205-5p, dre-miR-145-5p, novel_441, TCONS_00023692, and tcon_00095578; and immune-related genes SCAF, NLRC3, per1b, herc4, MafG, and KLHL29 regulated by dre-miR-456, novel_640, novel_163, TCONS_00079377, TCONS_00063590, and TCONS_000605708. Our findings provide new insights into the adaptation of S. marmoratus to acute temperature changes.
      PubDate: 2024-07-06
       
  • Distribution, abundance, and realized niches of meroplankton by two
           different mesh size nets during spring 2017 in the Southern Yellow Sea,
           China

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      Abstract: Abstract Meroplankton play a crucial role in both benthic and pelagic ecosystems. Existing quantitative research on estimating the quantities of meroplankton groups is both underrepresented and inaccurate. To investigate and evaluate the influence of varying mesh sizes (505 µm and 160 µm) on the sampling efficiency of meroplankton, we conducted an examination using two commonly used plankton nets during the spring season in the Southern Yellow Sea (SYS). Our study revealed a total of 12 meroplankton groups, with 9 groups identified in the 505-µm mesh nets and 11 groups in the 160-µm mesh nets. The results demonstrated the superior collection efficiency of the 160-µm net compared to the 505-µm net across the majority of meroplankton groups. Furthermore, we focused on exploring the abundance, distribution patterns, and realized niches of meroplankton collected by the two mesh size nets, and observed that the distribution of meroplankton closely resembled the distribution of possible benthic adults in the SYS. Correlation analysis of the six dominant groups collected in the 160-µm mesh nets revealed that seawater temperature and salinity emerged as the key environmental factors driving variations in meroplankton abundance within the SYS. This study also found that a smaller mesh size net does not necessarily capture meroplankton more comprehensively. A comprehensive understanding of the ecological characteristics of meroplankton requires the combination of two types of nets for research. Our research significantly advances our understanding of the quantification, abundance, and distribution of meroplankton, serving as a valuable contribution to the broader landscape of detailed quantitative meroplankton studies.
      PubDate: 2024-07-06
       
  • Microplastics in the seawater of the Beibu Gulf, the northern South China
           Sea: occurrence, sources, and ecological risk

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      Abstract: Abstract In this study, the occurrence, sources, and ecological risk of microplastics (>60 µm) in the surface and bottom seawater were investigated in the Beibu Gulf, the northern South China Sea. The average abundance of microplastics in surface and bottom waters was 1.35±0.93 and 0.79±0.50 items/m3, respectively. Microplastics in both surface and bottom waters were predominantly in the form of fragments, and mostly in green. The composition of microplastics in surface water was primarily poly (methyl methacrylate) (PMA), whereas in bottom water, polyethylene (PE) dominated. Positive matrix factorization (PMF) modeling revealed that the primary sources of microplastics were pipeline abrasion, fishing activities, plastic waste, landfill disposal, transportation, aquaculture, and construction activities. The pollution load index (PLI) indicated that the overall risk of microplastic pollution in the Beibu Gulf was low. Conversely, the polymer hazard index (PHI) for microplastics was relatively high. These data underscore the importance of timely and effective reduction of human-intensive activities contributing to microplastic pollution and provide valuable information for further research in microplastic ecotoxicology and biogeochemistry.
      PubDate: 2024-07-06
       
  • Interlinked water and sediment microplastics in the Laizhou Bay of China

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      Abstract: Abstract To explore the relationship of microplastic pollution in different media in marine environment, microplastics in the surface seawater and sediments of Laizhou Bay, Bohai Sea, North China, were studied. Seawater samples were collected using a pre-concentrator equipped with a 20-µm mesh size sieve, and sediment samples were collected by a box sampler. The shape, color, size, and type of microplastics were obtained by a stereomicroscope and a Fourier transform infrared spectrometer (ATR-μ-FT-IR). Results show that the abundance of microplastics in the surface seawater of Laizhou Bay was 858.3±573.2 items/m3, and that of microplastics in sediments was 151.0±77.4 items/kg dry weight (d.w.) The microplastics in seawater and sediments were mainly fibrous. Meanwhile, the microplastics in seawater were mainly transparent, and those in sediments were transparent and blue. The highest proportion of microplastics in seawater was rayon (77.48%), followed by polyethylene terephthalate (PET, 13.17%). The highest proportion of microplastics in sediments was rayon (73.66%), followed by PET (8.90%). The size of microplastics in 1 000–2 000 µm accounted for the largest proportion of 28.54% in seawater, while that in 500–1 000 µm took 27.93% in sediment. Microplastics in seawater and sediment showed medium-level pollution. In seawater, microplastic abundance was higher in offshore and nearshore areas of Weifang. In sediment, microplastic abundance was higher in offshore and nearshore areas of Dongying. The results of the principal component analysis (PCA) indicated that microplastics in sediment exhibited greater stability compared to those in seawater. The microplastics in seawater and sediment show a positive correlation in terms of shape and plastic type, while exhibiting a negative correlation in terms of color. Overall, microplastics in sediments were smaller in size, and those in seawater and sediments had consistent size distribution characteristics in space.
      PubDate: 2024-07-06
       
  • Comparative transcriptomic analysis of ovary and testis reveals
           sex-related genes in roughskin sculpin Trachidermus fasciatus

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      Abstract: Abstract The mechanisms underlying sex determination and differentiation have long intrigued researchers in the fields of development and evolutionary biology. The roughskin sculpin (Trachidermus fasciatus Heckel), displaying sexual dimorphism, provides an ideal model for studying the mechanisms. However, both genetic and genomic information concerning sex determination and differentiation, such as gonadal transcriptome data in roughskin sculpin, are lacking. Here, we present the first gonadal transcriptomes of roughskin sculpin and identify sex-related genes. We identified 8 531 differentially expressed genes (DEGs), among them 4 065 were upregulated in the ovary and 4 466 upregulated in the testis. Several sex-related gene ontology (GO) terms were enriched in ovary-biased genes, including “binding of sperm to zona pellucida”, “egg coat formation”, “positive regulation of acrosome reaction”, “cell division”, and “cell cycle”, while the GO terms such as “spermatogenesis”, “sperm axoneme assembly”, “cilium assembly”, “cilium movement”, and “cilium movement involved in cell motility” were enriched in testis-biased genes. Moreover, six KEGG pathways were significantly enriched in the ovary, whereas only one was enriched in the testis. Of these DEGs, 40 sex-related genes were identified, which including 26 testis-biased genes (such as Dmrtb1, Gsdf, Sox9b, Wnt4b, Tcp11l2, and Efhb), and 14 ovary-biased genes (such as Cyp19a1a, Foxh1, Foxr1, Gdf3, Hsd17b12, and Igf2bp3). This gonadal transcript dataset would broaden our understanding of sex determination and differentiation mechanisms in roughskin sculpin, expand the genomic database, support future studies on sex-related gene functions, and facilitate molecular biology research into roughskin sculpin.
      PubDate: 2024-07-06
       
  • Molecular cloning and functional analysis of two calcium-associated
           cuticular protein genes in Neocaridina denticulata sinensis

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      Abstract: Abstract The body surface of crustaceans is covered with a sturdy shell. The growth and development of crustaceans are realized through molting. Neocaridina denticulata sinensis is a suitable candidate for crustacean scientific research. Two calcium-associated cuticular protein genes, named NdCAP-1 and NdCAP-2, were obtained from N. denticulata sinensis. Molecular docking simulated the binding effect of both proteins and calcium ions. Semi-quantitative reverse transcription PCR results show that NdCAP-1 is expressed in D2–4 stage, NdCAP-2 expressed in D2–4 and A–B stages, and both were significantly expressed in the cephalothorax cuticle and pereiopods. Then, it was revealed that NdCAP-1 and NdCAP-2 are regulated by NdBcR-mediated 20E signaling pathways. Knockdown of NdCAP-1 and NdCAP-2 was observed to cause surface defects. The recombinant proteins (rNdCAP-1 and rNdCAP-2), obtained by prokaryotic expression, had calcium-binding and chitin-binding ability, inhibited formation of calcium carbonate precipitate. These results show that calcium-associated cuticular proteins play important roles in cuticle formation and calcification.
      PubDate: 2024-06-29
       
  • Bacterial communities on microplastics in a wetland ecosystem

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      Abstract: Abstract Microplastics (MPs), a new type of environmental pollutant, can serve as substrates for microbes. Wetland ecosystems support a diverse range of aquatic and terrestrial species, and their ecological functions can be disturbed by inputs of microplastic debris. However, limited studies have focused on the interactions between MPs and microbes in wetland ecosystems. In this study, the bacterial communities on MPs in the wetland ecosystem of Poyang Lake, China’s largest freshwater lake, were investigated based on 16S rRNA sequencing. We found that the bacterial communities on MPs showed a lower richness and diversity but presented a higher number of unique OTUs than the water and sediment bacterial communities. Furthermore, the structure of the bacterial communities on MPs had a higher similarity to the bacterial compositions of the sediment than of the water, indicating that sediments are an important source of bacteria for MPs. It should be noted that the MPs could enhance the exchange of bacteria between water and sediment. The bacterial composition varied significantly among different substrates and at different sampling times; nevertheless, it showed consistency on the surface of MPs at different sampling sites. Proteobacteria dominated as the most abundant bacterial phylum across all samples. At the genus level, Pseudomonas were distinctly enriched in bacterial communities on MPs. In addition, the results of pathway prediction indicated that the pathways of “human disease” from MPs bacterial communities were higher than those from water and sediment. These results illustrate that the surfaces of MPs serve as distinct habitats for specific bacteria. Environmental factors such as nitrate nitrogen, pH, and organic matter were crucial in shaping the bacterial communities. This study provided a new insight into interactions between MPs and microbes in wetland ecosystems and into the associated potential risks to human health.
      PubDate: 2024-06-29
       
  • Wave interaction for a generalized higher-dimensional Boussinesq equation
           describing the nonlinear Rossby waves

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      Abstract: Abstract Based on an algebraically Rossby solitary waves evolution model, namely an extended (2+1)-dimensional Boussinesq equation, we firstly introduced a special transformation and utilized the Hirota method, which enable us to obtain multi-complexiton solutions and explore the interaction among the solutions. These wave functions are then employed to infer the influence of background flow on the propagation of Rossby waves, as well as the characteristics of propagation in multi-wave running processes. Additionally, we generated stereogram drawings and projection figures to visually represent these solutions. The dynamical behavior of these solutions is thoroughly examined through analytical and graphical analyses. Furthermore, we investigated the influence of the generalized beta effect and the Coriolis parameter on the evolution of Rossby waves.
      PubDate: 2024-06-27
       
  • Observing the air-sea turbulent heat flux on the trajectory of tropical
           storm Danas

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      Abstract: Abstract Tropical cyclones constitute a major risk for coastal communities. To assess their damage potential, accurate predictions of their intensification are needed, which requires a detailed understanding of the evolution of turbulent heat flux (THF). By combining multiple buoy observations along the south-north storm track, we investigated the THF anomalies associated with tropical storm Danas (2019) in the East China Sea (ECS) during its complete life cycle from the intensification stage to the mature stage and finally to its dissipation on land. The storm passage is characterized by strong winds of 10–20 m/s and a sea level pressure below 1 000 hPa, resulting in a substantial enhancement of THF. Latent heat (LH) fluxes are most strongly affected by wind speed, with a gradually increasing contribution of humidity along the trajectory. The relative contributions of wind speed and temperature anomalies to sensible heat (SH) depend on the stability of the boundary layer. Under stable conditions, SH variations are driven by wind speed, while under near-neutral conditions, SH variations are driven by temperature. A comparison of the observed THF and associated variables with outputs from the ERA5 and MERRA2 reanalysis products reveals that the reanalysis products can reproduce the basic evolution and composition of the observed THF. However, under extreme weather conditions, temperature and humidity variations are poorly captured by ERA5 and MERRA2, leading to large LH and SH errors. The differences in the observed and reproduced LH and SH during the passage of Danas amount to 26.1 and 6.6 W/m2 for ERA5, respectively, and to 39.4 and 12.5 W/m2 for MERRA2, respectively. These results demonstrate the need to improve the representation of tropical cyclones in reanalysis products to better predict their intensification process and reduce their damage.
      PubDate: 2024-06-27
       
  • Stock appraisal for Atlantic tripletail (Lobotes surinamensis; Bloch,
           1790) in the Bay of Bengal, Bangladesh

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      Abstract: Abstract The Atlantic tripletail (Lobotes surinamensis) is a high revenue-generating fish species predominantly caught by mechanized artisanal fishers community and the most available member of its family in Bangladesh. This is a ground work of fish stock assessment study in the Bay of Bengal region to explore the life history parameters and associated biomass of this species, using three length-based approaches of TropFishR, the length-based Bayesian biomass estimation (LBB), and Froese’s length-based indicators (LBIs). An almost homogenous body growth pattern (b=3.07; R2=0.98) was observed in the length-weight relationship of tripletail. The life history parameters for tripletail, as determined by the von Bertalanffy Growth Function (VBGF) model, were L∞=113.36 cm and k=0.51/a. The length converted catch curve (LCCC) yielded an estimation of the total mortality (Z=1.77/a), with the natural mortality estimated at (M=0.53/a) and the fishing mortality estimated at (F=1.24/a). But, the ratio of mortality (F/M=0.15) by LBB captured the non-fully exploited status of biomass (B/BMSY=2.1). LBI analysis indicated that the tripletail fishery’s spawning stock biomass is greater than the target and limit reference points, indicating a healthy state of biomass.
      PubDate: 2024-06-27
       
  • Effects of aging and temperature on the desorption of polychlorinated
           biphenyls from microplastics in simulated digestive fluids

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      Abstract: Abstract Ingestion of microplastics by various organisms has been widely evidenced. Chemicals associated with microplastics (MPs) may be released to digestive tracts upon ingestion. However, the effect of aging and temperature on the chemical desorption for MPs remains poorly understood. The exposure of polyethylene (PE) particles to UV radiation in dry air, tap water, and sea water was conducted to mimic the aging process of MPs in different environments. Polychlorinated biphenyls (PCBs), as a typical hydrophobic organic contaminant, were preloaded in these aged and pristine PE. The desorption was performed by exposing preloaded PE particles in simulated gastric and gut fluids at 25 °C and 40 °C. After UV aging, the average diameter of PE particles decreased rapidly with aging time, indicating continuously fragmentation of PE under UV exposure. The desorption of PCBs from PE particles under different conditions varied from 7% to 40%, and that from aged PE in gut fluid at 37 °C was significantly higher than those under other conditions (P<0.05). Furthermore, a clear declining trend was observed as lgKow (octanol-water partition coefficient) value increased. The aging process, hydrophobicity of chemicals, and incubation temperature were important factors on the desorption of PCBs from PE. The present study helps understand the desorption of PCBs from microplastics and the potential risks of microplastics ingestion by organisms.
      PubDate: 2024-06-15
       
  • Species composition and distribution of common Crassostrea and Saccostrea
           oysters along the coast of Hainan Island

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      Abstract: Abstract Oyster cultivation is a pivotal economic industry in Hainan Island, South China, where a high oyster species diversity is shown. However, the specific distribution and biodiversity of oyster resources in the island have remained unclear. To elucidate the diversity of oyster species and their distribution there, 307 oyster samples were collected from 29 sites in the intertidal zone around the island, and were identified using both morphological and molecular approaches. A minimum of 12 oyster species were identified in taxonomy, including Crassostrea species (C. gigas angulata, C. sikamea, C. iredalei, C. dianbaiensis, C. talonata, C. ariakensis, and C. hongkongensis), and Saccostrea species (S. malabonensis, S. mordax, S. echinata, S. circumsuta, and S. mordoides). The results revealed a remarkable diversity of oyster species along the coast of the island. Particularly noteworthy are that S. malabonensis and S. mordax constituted 36% and 22% of the collected specimens, respectively. This study provided a comprehensive overview on current state of oyster biodiversity in Hainan, serving as a valuable reference for conservation and research on species distribution and resource dynamics in oyster populations.
      PubDate: 2024-06-15
       
  • Validating the use of ROS-scavenging bacteria as probiotics to increase
           coral resilience to thermal stress

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      Abstract: Abstract Thermal stress causes the overproduction and toxic accumulation of reactive oxygen species (ROS), which seems to be correlated with coral bleaching and, ultimately, death. The reduction of ROS concentration within the coral holobiont could minimize the effects of thermal stress and support efforts to reduce coral decline globally. In the current study, we explored the physiological responses of Pocillopora damicornis to ROS-scavenging bacteria inoculation as well as the microbiome restructuring that correlates with P. damicornis’s resilience to thermal stress after probiotic inoculation. Inoculation of corals with ROS-scavenging bacteria enhanced coral health and reduced ROS concentration. Furthermore, the enhanced coral thermal resistance promoted by ROS-scavenging bacteria was also correlated with an overall coral microbiome restructuring. In addition, the complex network relationships between bacteria and Symbiodiniaceae in corals after ROS-scavenging bacteria inoculation contributed to corals’ resilience to high temperatures. Besides, coral heat tolerance bacterial biomarkers, such as Myxococcota, were enriched in corals with added ROS-scavenging bacteria. Collectively, our findings validate the selected ROS-scavenging bacteria as coral probiotics that could help corals resist thermal stress on a short timescale. Additionally, our data contribute to our understanding of the potential interactions between different members of the coral holobiont and the use of probiotics as tools to aid coral restoration efforts.
      PubDate: 2024-06-15
       
  • Distribution of modified Circumpolar Deep Water and its threat in
           Vincennes Bay, East Antarctica

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      Abstract: Abstract The Antarctic Bottom Water formation site Vincennes Bay, East Antarctica is experiencing a substantial intrusion of modified Circumpolar Deep Water (mCDW), which may inhibit the formation of Dense Shelf Water (DSW) and drive basal melting of the ice shelves. Based on hydrographic data obtained from March to November in 2012, we evaluated the spatial spread of mCDW over the continental shelf region of Vincennes Bay and the associated temporal evolution of water properties, as well as the sea ice formation effect on water column in the coastal polynya. Results show that two branches of mCDW occupied the deep layers of the continental shelf, distinguished by the potential density (smaller than 27.8 kg/m3 or not) when potential temperature θ=−0.5 °C in the θ-salinity space. The warmer and less dense branch observed on the east plateau, accessed the eastern ice shelves in the coastal polynya to drive basal melting of ice shelves. In contrast, the other colder and denser branch in the mid-depression reached the western Underwood Ice Shelf. DSW formation was detectable in the coastal polynya during September–November, proving the occurrence of deep convection. Surface heat loss and brine rejection during the intensive sea ice formation contributed to the destratification of the water column in the coastal polynya. It was estimated that at least 1.11±0.79 TW heat carried by mCDW into the inner part of the polynya.
      PubDate: 2024-06-15
       
  • An axenic strain reveals the responses of Phaeodactylum tricornutum to
           external organic carbon

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      Abstract: Abstract The model diatom Phaeodactylum tricornutum is considered a promising source of various high value bioproducts, and developing cultivation processes is crucial for its commercialization. Although mixotrophy and heterotrophy have been recommended as effective strategies for microalgal cultivation, previous studies on P. tricornutum have yielded conflicting results in terms of cultivating this microalga. To verify the capacity of this microalga utilizing external organic carbon, both heterotrophic and mixotrophic cultivation with varied carbon sources were performed using an axenic strain. The results demonstrate that glycerol was the only organic carbon that substantially stimulated the growth of P. tricornutum in the presence of light. Sodium acetate (NaAc) at low concentrations could also promote growth, while at high concentrations led to severe inhibition under mixotrophic conditions. The addition of glucose imposed no appreciable impact on either cell density or biomass concentration, confirming that P. tricornutum cannot metabolize external glucose. Subsequently, a comparative analysis between mixotrophy and autotrophy was performed to reveal the influences of glycerol on the cellular metabolism based on growth performances, biochemical compositions, and chlorophyll fluorescence parameters. Results also indicate that the addition of glycerol did not have detrimental effects on the capacity of either pigments biosynthesis or photosynthesis, but enhanced the saturated fatty acids and reduced the unsaturated fatty acids.
      PubDate: 2024-06-15
       
  • Spatial and temporal variation of water clarity in typical reservoirs in
           the Beijing-Tianjin-Hebei region observed by GF1-WFV satellite data

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      Abstract: Abstract Rapidly monitoring regional water quality and the changing trend is of great practical and scientific significance, especially for the Beijing-Tianjin-Hebei (BTH) region of China where water resources are relatively scarce and inland water bodies are generally small. The remote sensing data of the GF1 satellite launched in 2013 have characteristics of high spatial and temporal resolution, which can be used for the dynamic monitoring of the water environment in small lakes and reservoirs. However, the water quality remote sensing monitoring model based on the GF1 satellite data for lakes and reservoirs in BTH is still lacking because of the considerable differences in the optical characteristics of the lakes and reservoirs. In this paper, the typical reservoirs in BTH-Guanting Reservoir, Yuqiao Reservoir, Panjiakou Reservoir, and Daheiting Reservoir are taken as the study areas. In the atmospheric correction of GF1-WFV, the relative radiation normalized atmospheric correction was adopted after comparing with other methods, such as 6S and FLAASH. In the water clarity retrieval, a water color hue angle based model was proposed and outperformed other available published models, with the R2 of 0.74 and MRE of 31.7%. The clarity products of the four typical reservoirs in the BTH region in 2013–2019 were produced using the GF1-WFV data. Based on the products, temporal and spatial changes in clarity were analyzed, and the main influencing factors for each water body were discussed. It was found that the clarity of Guanting, Daheiting, and Panjiakou reservoirs showed an upward trend during this period, while that of Yuqiao Reservoir showed a downward trend. In the influencing factors, the water level of the water bodies can be an important factor related to the water clarity changes in this region.
      PubDate: 2024-05-24
       
  • Epiphytic zooplankton community profiles in a typical urban wetland as
           revealed by DNA metabarcoding

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      Abstract: Abstract Zooplankton, a crucial component of urban wetland, are one of the effective bioindicators for monitoring the feeding stocks of organisms at higher trophic levels and assessing the ecological quality of ecosystems. However, information about the characteristics of epiphytic zooplankton community structure resulted from traditional methods is limited and hindered by the large amount of detritus and sludge attached to the macrophytes. We investigated the epiphytic zooplankton communities associated with macrophytes (Vallisneria, Nymphaea, and Thalia dealbata) in a subtropical wetland using as DNA markers of the 18S rRNA gene and the mitochondrial cytochrome c oxidase subunit I (COI) gene. A total of 241 OTUs of zooplankton were obtained from COI amplicons, including 194 OTUs of Rotifera, 22 of Cladocera, and 25 of Copepoda, while only 62 OTUs of zooplankton were obtained from 18S rDNA amplicons including 34 OTUs of Rotifera and 28 of Copepoda. The zooplankton communities associated with the three macrophytes were similar, but they differed significantly from those in the open waters. However, there were no significant temporal differences among the zooplankton communities. Epiphytic zooplankton communities were dominated by littoral zooplankton such as Testudinella, Lecane, and Philodina. Microzooplankton, especially littoral species, utilize macrophytes as food sources and as refuges against predation. This further led to an increase in α and β diversity of zooplankton communities in urban wetlands. Our result suggests that the joint use of multiple molecular markers could improve the taxonomic resolution and generate a comprehensive biodiversity profile of zooplankton.
      PubDate: 2024-05-24
       
  • Erratum to: Transcriptome profiling and RXR gene family identification
           reveals the molecular mechanism of rapid aging after spawning of
           cuttlefish Sepiella japonica

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      PubDate: 2024-05-01
       
  • Erratum to: A nonlinear wake model of a wind turbine considering the yaw
           wake steering

    • Free pre-print version: Loading...

      PubDate: 2024-05-01
       
 
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  Subjects -> EARTH SCIENCES (Total: 771 journals)
    - EARTH SCIENCES (527 journals)
    - GEOLOGY (94 journals)
    - GEOPHYSICS (33 journals)
    - HYDROLOGY (29 journals)
    - 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  
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JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


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