Native and imported Scomber Japonicus were collected from Egypt and found to be infected with the third stage larvae (L3) of Anisakidae. The Anisakidae larvae were found encapsulated tightly coiled in the mesenteries associated with pyloric ceca and the serosal surface of visceral organs and/or uncoiled larvae free in the abdominal cavity of infected S. japonicus. The prevalence, mean intensity, and

This paper aims to improve the understanding of the marine sedimentation of the continental shelf and upper slope off southeast (SE) Brazil during the 20th century through the study of the deposition of natural radionuclides and its relationships with other sedimentological variables in a large set of sediment cores obtained during several oceanographic cruises. The main results of this study were

In the Tropical Atlantic Ocean, we assessed the accuracy of a Lagrangian model (Ichthyop) forced with velocity fields from a hydrodynamical model (CROCO) and two different remote sensing products (GlobCurrent and OSCAR) using trajectories of oceanographic drifters. Additionally, we evaluated the possibility to expand the drifters data using trajectories of GPS-buoy equipped drifting Fish Aggregating

A one-dimensional numerical model that includes the complex life cycle of Phaeocystis antarctica, diatom growth, dissolved iron (dFe) and irradiance controls, and the taxa's response to changes in these variables is used to evaluate the role of different iron sources in supporting phytoplankton blooms in the Ross Sea. Simulations indicate that sea ice melt accounts for 20% of total dFe inputs during

We used more than two decades (1997–2019) of satellite-estimated phytoplankton chlorophyll-a concentration (Chl-a) during September–December time intervals to discern the spatial and temporal changes of phytoplankton biomass in the Indonesian Maritime Continent (IMC) associated with different climatic events. In the IMC coastal areas (except for the northern Malacca Strait) climate changes influenced

The shallow marine environment represents a region of high biological productivity, ecological diversity, and complex oceanographic conditions, and often supports various human activities and industries. Mapping of the seafloor in shallow marine environments reveals seafloor features in detail, shedding light on a range of natural and anthropogenic processes. We present a high-resolution (2-m) multibeam

Many boreal lakes are experiencing an increase in concentrations of terrestrially derived dissolved organic matter (DOM)—a process commonly labeled “browning.” Browning affects microbial and photochemical mineralization of DOM, and causes increased light attenuation and hence reduced photosynthesis. Consequently, browning regulates lake heterotrophy and net CO2‐efflux to the atmosphere. Climate and

The Southern Ocean provides strong contrasts in rates and directions of change in temperature and sea ice between its sectors, but it is unknown how these affect plankton species that are distributed right around Antarctica. Here, we quantify the changing circumpolar distributions of Antarctic krill, based on the CHINARE 2013/14 circum‐Antarctic expedition, plus independent analyses of compiled abundance

High sea surface chlorophyll concentration on the Argentine Continental Shelf frequently extends to the deep ocean in the vicinity of the Brazil/Malvinas Confluence (BMC). The offshore transport of shelf waters likely plays a key role in the biogeochemical balance of the western South Atlantic and promotes the offshore transport of planktonic species. We analyze data from an oceanographic survey carried

The Rockall Trough is one of the main conduits for warm Atlantic Water to the Nordic Seas. Ocean heat anomalies, originating from the eastern subpolar gyre, are known to influence Arctic sea ice extent, marine ecosystems, and continental climate. Knowledge of the transport through this basin has previously been limited to estimates from hydrographic sections which cannot characterise the intra‐annual

Time series of sea level measurements from different instruments deployed around the Haifa Bay area are analyzed. All observations indicate the existence of persistent low frequency oscillations with periods corresponding to approximately one hour and half‐an‐hour. These oscillations are persistent throughout most of the year and reached maximal wave heights of around 30 cm, a comparable value to tidal

This study examines the potential impact of subsurface potential temperature and current conditions on the sea surface temperature (SST) and rainfall over the tropical region using Climate Forecast System Version 2 (CFSv2) ensemble seasonal reforecasts for 1958–2014. The climatological difference of earlier period (1958–78; P58‐78) and later period (1994–2014; P94‐14) in January initialized reforecasts

The residual sand (D > 62.5 μm) transport (RST) refers to the tidally averaged rate of horizontal sand transport. Albeit much smaller than the peak rates, it determines the morphological evolution. The analytical expression for the tide-induced RST has been reported in the condition of one-dimensional tidal currents by van de Kreeke and Robaczewska (1993). Here we extended the analytical solution to

Breaching of coastal causeways and dikes (embankments) is a common method used to restore estuaries and marshes to a more natural state. Here, we reviewed literature pertaining to embankment breaches to assess the effectiveness of this restoration method and to provide practical advice for future breaches. While all methods of embankment breaching can be successful, active measures appear to be more

Macroclimatic changes are expected to radically alter coastal wetland ecosystems in the coming century. The trajectory of the response to climate warming may differ based on other concomitantly changing abiotic variables such as soil salinity and relative humidity. Thus, understanding plant responses to multiple interacting stressors is required to accurately predict coastal wetland shifts under climate

Crangonyx islandicusSvavarsson & Kristjánsson, 2006 is a groundwater amphipod endemic to Iceland and restricted to spring sources at edges of lava fields in the volcanically active zone. Genetic analysis indicate that the amphipod has survived in subglacial refugia in the groundwater in Iceland during past Ice Ages. We investigated the gut bacteria of C. islandicus and compared them with the bacterial

Under cyclic loads, such as wave, earthquake, and traffic load, the direction of the principle stress axis rotates continuously in the soft foundation of embankment dam. However, the research conducted on stress-strain and stiffness characteristics of soft foundation in embankment dam under complex loads considering principal stress rotation was limited. In this paper, the deformation property of natural

The present work provides length‐weight relationships (LWRs) for fish species captured around artificial offshore reef deployed 5 km from Guaxindiba Port, northern Rio de Janeiro, Brazil. The fish were captured during two sampling periods each year between 1996 and 2017 using bottom gill nets (25 mlength × 3 mdepth; 30 mm mesh). The fish were kept on ice and the biometric data, including total length

Length‐to‐weight and length‐to‐length ratios were estimated for six cavefishes including Yunnanilus longibarbatus, Yunnanilus bailianensis, Yunnanilus jinxiensis, Oreonectes polystigmus, Paranemachilus pingguoensis, and Paranemachilus genilepis from the upper reaches of the Pearl River, Guangxi Province, China (between 106.26E, 23.14N and 111.42E, 24.85N). The fish were captured between May and October

Post-Hurricane Sandy research has improved our understanding of coastal resilience during major storm events, accelerated sea level rise, and other climate-related factors, helping to enhance science-based decision-making, restoration, and management of coastal systems. The central question this special section examines is: “looking across the breadth of research, natural resource management actions

The responses of marsh elevation in four National Parks affected by Hurricane Sandy were examined using empirical data from surface elevation tables (SET) and modeling. The parks examined were Fire Island National Seashore and Gateway National Recreational Area in New York; Cape Cod National Seashore, Massachusetts; and Assateague Island National Seashore, Maryland. Observed vertical accretion rates

This collection of papers provides insights into methods and data currently available to quantify the benefits associated with estuarine habitat restoration projects in the northern Gulf of Mexico, USA, with potential applicability to other coastal systems. Extensive habitat restoration is expected to occur in the northern Gulf of Mexico region over the next several decades through funding associated

The frequency and magnitude of storm events is expected to increase with climate warming. Tidal freshwaters may be particularly sensitive to these events owing to their proximity to riverine inputs. Continuous and synoptic water quality data from riverine and tidal freshwater segments of the James, Mattaponi, and Pamunkey Rivers (Virginia, USA) were analyzed to characterize their response to high discharge

Ghost fishing in derelict blue crab traps is ubiquitous and causes incidental mortality which can be reduced by trap removal programs. In an effort to scale the benefits of such removal programs, in the context of restoring the Gulf of Mexico after the Deepwater Horizon oil spill, this paper calculates the ecological benefits of trap removal by estimating the extent of derelict blue crab traps across

Hurricane Harvey heavily impacted Texas in August 2017 due to an extreme amount of rainfall, especially in the large metropolitan area in and around Houston. There was an offshore storm surge associated with Harvey, and while it raised the water level in the bay, possibly prolonging flooding in the Houston area by slowing drainage, it was not responsible for flooding, as water flowed continuously out

Produced water (PW), a large byproduct of offshore oil and gas extraction, is reinjected to formations or discharged to the sea after treatment. The discharges contain dispersed crude oil, polycyclic aromatic hydrocarbons (PAHs), alkylphenols (APs), metals, and many other constituents of environmental relevance. Risk-based regulation, greener offshore chemicals and improved cleaning systems have reduced

Accurate and efficient numerical wave generation and absorption of two-dimensional nonlinear periodic waves traveling on a steady, uniform current were carried out in a potential, fully nonlinear numerical wave tank. The solver is based on the Βoundary Εlement Μethod (ΒΕΜ) with linear singularity distributions and plane elements and on the mixed Eulerian–Lagrangian formulation of the free surface equations

Breaching flow slides result in a turbidity current running over and directly interacting with the eroding, submarine slope surface, thereby promoting further sediment erosion. The investigation and understanding of this current are crucial, as it is the main parameter influencing the failure evolution and fate of sediment during the breaching phenomenon. In contrast to previous numerical studies dealing

The ocean thermal structure (OTS) is a significant element that affects tropical cyclone (TC) intensities, as energy drawn from the ocean fuels TCs. Satellite altimetry can be used to derive the OTS for TC research. The cooling of sea surface temperature (SST) caused by TCs is closely related to the OTS and differs according to differences in the OTS in different regions. However, the accuracy of existing

Pontocaspian ecosystems have deteriorated due to increasing anthropogenic pressures, including shipping activities. We studied the relationships between sedimentology, environmental and shipping variables, and the dinocyst distribution and abundance across the Pontocaspian region. Cyst diversity was characterized by the presence of 36 dinocyst morphotypes. Western Black Sea assemblages were dominated

Two mangrove sediment cores representing middle region of the Panchagangavali Estuary (one each at Chakra Estuary and Halady Estuary) were analysed for sedimentological and geochemical parameters. The data revealed prevalence of uniform violent hydrodynamic energy condition in the Chakra Estuary (core G3), whereas, varying and relatively calm hydrodynamic energy conditions in the Halady Estuary (core

Seer fish (Scomberomorus sierra) and mullet (Mugil cephalus) are some of the most important marine fishery resources along the Colombian Pacific Ocean. The objective of this study was to forecast the landings of seer fish and mullet based on data from time-series annual landings reported by the Food and Agriculture Organization of the United Nations (FAO) from 1971 to 2014. The study considered autoregressive

In this study, levels of 20 trace elements (Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Ag, Cd, Sn, Sb, Ba, Hg, Pb and U) and the respective biota-sediment accumulation factors (BSAF) were assessed for three marine species from the Eastern Mediterranean (Lebanese coast) belonging to different trophic levels in the food chain (algae, bivalves and shrimps). Multivariate analyses showed significant

The Indo-Pacific humpback dolphin (Sousa chinensis) is a species vulnerable to extinction. One population of this species, located in Xiamen Bay, China, has been extensively studied so as to estimate its abundance. However, the demographic dynamics of this population are not fully known. To study survival and the size of this population, monthly photo-identification surveys were conducted from August

Blooms of the dinoflagellate Karenia mikimotoi cause mass mortality of aquaculture fishes and have become a worldwide environmental problem in coastal waters, especially in Asia. One area is Imari Bay, Japan, where blooms have recurrently formed in recent years. This study examines the meteorological and oceanographical conditions causing the recent increase in occurrence. The recent frequency of occurrence

The phytoplankton and zooplankton biomass as well as nutrients in the southern region of Kuroshio Extension (KE) presents obvious decadal variability. Both local and remote links between biomass and physical properties are investigated by comparing satellite observations and the outputs from a biological-physical coupled model. The Regional Ocean Model System (ROMS) and Carbon, Silicate, and Nitrogen

Species distribution modelling (SDM) has been increasingly applied to Southern Ocean case studies over the past decades, to map the distribution of species and highlight environmental settings driving species distribution. Predictive models have been commonly used for conservation purposes and supporting the delineation of marine protected areas, but model predictions are rarely associated with extrapolation

Significant seasonal variations in surface circulation are driven by the East Asian Monsoon in the South China Sea (SCS). Seasonal variations in copepod and hyperiid communities following the monsoon have been reported. The mechanisms controlling these monsoon-driven seasonal variations in hyperiid communities were analyzed using data from the central SCS (CSCS) during 2014–2015. Hyperiids mainly aggregated

Zinc is essential for animal metabolism, but the variation in Zn concentrations within seabird populations has been seldom explored. We collected Blue-footed booby (Sula nebouxii) eggs during 2012 and 2013 and blood samples from nestlings and adults during 2011 and 2012 in Sinaloa, Mexico, to evaluate differences in Zn concentrations among years, ages, sexes, and breeding stages. Zinc concentrations

The invasive bivalve Mytilopsis sallei caused several economic and ecological impacts in Asia. In Brazil, M. sallei was first reported in 2004, and thus far, little is known about its ecological impact on Brazilian estuaries. The present study aims to evaluate the abundance and distribution of M. sallei and to analyse the environmental factors that led to the establishment of this species in a Brazilian

Displacement of fisheries through management has the potential to re-distribute the anthropogenic pressures associated with fishing practices. These anthropogenic pressures occur concurrently with naturally occurring environmental processes, and their combined influences can alter the structure of species assemblages across a region. Spatial variability in the demersal assemblages in the Celtic Sea

More than 30 cold seeps have been discovered on the northern continental slope of the South China Sea (SCS), but only two cold seep sites actively harbor living cold seep communities. One is the Haima cold seep, which is located at a water depth of approximately 1360–1400 m at the northern slope of the SCS. To date, however, the scale of seepage activity, the spatial distribution of seepages, and the

Tropical estuaries are characterised by high spatial and temporal variability in the conditions they provide for living organisms, which in turn may affect their biochemical composition. Anthropogenic contaminants such as nutrients, antibiotics, pesticides and trace metals may also affect the biochemical composition of these coastal organisms, notably with regard to fatty acids (FA), of which optimal

For this study particle flux material collected over 13 years period starting in February 2002 until summer 2015 with the long-term mooring Kiel 276 (33°N, 22°W) in the subtropical Northeast Atlantic was analyzed. Our focus was set on the elemental composition and trace element fluxes which we analyzed with the help of ICP-OES and ICP-MS. The particle flux has a mean of 60 mg m−2 d−1 (range: 1–365 mg m−2 d−1)

The sea-to-air flux of dimethylsulfide (DMS) is potentially an important determinant of regional climate. A nitrogen-based ecosystem model with unidirectional coupling to a sulfur-based biochemical model is used to simulate DMS flux in the Eastern China Marginal Seas (ECMS) (25°N-40°N, 120°E-130°E) during year 2011. Monthly mean of meteorological forcings (sea surface temperature (SST), wind speed

Decadal changes of radiocarbon (14C) of seawater in the eastern tropical Indian Ocean are evaluated by the reoccupation of three stations previously measured by the Geochemical Ocean Sections Study (GEOSECS) and the World Ocean Circulation Experiment (WOCE) expedition in the spring of 2014. The bomb-14C inventory in the whole water column increased by ~56% to a level of 7.7 × 109 atoms /cm2 from 1978

The southern hake, Merluccius australis, is one of the most important marine fishery resources in Chilean Patagonia. However, little is known about its early life history, especially the transport of eggs and larvae and the connectivity between spawning and nursery areas. An individual-based model (IBM) of the early life stages of M. australis, coupled to a hydrodynamic model, was used to track virtual

Plankton composition and density, and domoic acid (DA) content in microplankton and mesozooplankton were assessed over the northern Patagonian coastal shelf in late austral summer 2013. Maximum values of DA in these two plankton fractions as well as maximum densities of both Pseudo-nitzschia spp. (mainly the toxigenic P. australis) and DA potential vectors were only detected on the southern coast of

Knowledge of a population’s abundance is of primary importance for conservation management. However, robust estimates of abundance are often difficult to obtain, especially for cetaceans which spend most of their lives submerged. Cetacean abundance is commonly estimated using aerial or vessel-based line transect surveys and distance sampling methods. During 2012–2014, the first line transect surveys

The São Paulo Ridge (SPR) is a 350 km-long linear geological feature located in the Continental Margin off Brazil (Latitude 28–29°S, Longitude 40–45°W). In 2013, the region was mapped during the SW Atlantic “Iata-Piuná” expedition and explored by a series of deep-sea dives of the manned submersible Shinkai 6500. A digital bathymetric model analyzed for seafloor morphology, delimited four major bathymetric

Over the last decade, glycerol dialkyl glycerol tetraethers (GDGTs) have become one of the most investigated lipid classes in marine and terrestrial organic geochemical research. GDGTs are microbial membrane core lipids biosynthesized as multiple homolog series of isoprenoid or methyl-branched isomers [isoprenoid glycerol dialkyl glycerol tetraethers (isoGDGTs) and Branched GDGTs (brGDGTs), respectively]

Fish skin mucus is an important component of the innate immune mechanism and provides a first barrier against pathogens. Although several studies investigated and demonstrated the antimicrobial properties of skin mucus of fishes, most of them tested antimicrobial properties against marine microbial strains as potential use in aquaculture. Furthermore, most of these studies concerned freshwater species

Areas beyond national jurisdiction (ABNJ) encompass the seabed, subsoil and water column beyond coastal State jurisdiction and marine biodiversity beyond national jurisdiction (BBNJ) is rich and varied. From providing sustenance and supporting livelihoods, to absorbing anthropogenic carbon dioxide emissions, ABNJ ecosystems are vital to the wellbeing of humankind. However, an enhanced understanding

REEFS is a novel multipurpose patented wave energy converter (WEC) that combines electric energy production with shore protection. The device shows some similarities with natural reefs and detached submerged breakwaters. However, unlike previous ones it is installed with an orthogonal alignment relative to coast line and with a greater freeboard. Exterior stay vanes, are another distinct characteristic

In this paper, the instability and three-dimensional (3-D) nonlinear dynamics of a supported pipe subjected concurrently to internal and external axial flows are investigated, for the flow velocity of internal fluid being either steady or pulsatile. For that purpose, a 3-D version of nonlinear governing equations for two perpendicular lateral displacements of the pipe are derived by the use of extended