The engagement of the fishers and other stakeholders in the management of the resources is considered the key ingredient for a good fishery governance. The stalked barnacle Pollicipes pollicipes can be considered the most important economic resource on rocky shores of northern Spain and continental Portugal. This species is highly prized as food and it is heavily exploited. The main objective of the

The emerging of organotins (OTs) have adverse effect toward marine organisms and expose health problem through dietary uptake of contaminated seafood. While the booster biocide creates significant environmental risks mainly on the base of the marine food chain. The present study reported on the baseline data on the level and distribution of organotin and booster biocide in the primary producers (Ulva

Nitrogen fixation is one of the key biogeochemical processes that regulate the availability of biologically active nitrogen to the natural environments; however, ecological control of this process is still unknown. This study reports the variations of N2 fixation rate in the water and sediment environments of an estuary (southwest coast, India) as a function of environmental factors controlling this

Developing countries may face many obstacles in managing their resources and in assigning conservation status to certain groups or species. One of the main obstacles is the lack of basic and reliable information on habitat of species or ecosystems. Sustainable species management is difficult to attain without this information. A key piece of information about any resource is their distribution and

Stand structure and aboveground biomass dynamics of overcrowded Kandelia obovata forest under self-thinning were investigated at Manko Wetland. Self-thinning process was accompanied by changes in aboveground biomass dynamics and stand structure. Aboveground biomass was not completely constant as the stand grew because death and growth of trees occurred at the same time. However, the values of Spearman’s

To determine the effects of water depths on taxonomic breadth of biofilm-dwelling ciliates in marine ecosystems, (1-month) baseline survey was conducted in coastal waters of the Yellow Sea, northern China. Utilizing glass slides as artificial substrates, samples were collected at four depths of 1, 2, 3.5 and 5 m after a 14-day exposure period. Taxonomic patterns and taxonomic distinctness measures

Decreased salinity is one of the main abiotic factors causing macrobenthic degradation in reclaimed intertidal wetlands. However, our knowledge of the mechanism(s) underpinning this degradation remains surprisingly scanty. To fill this gap, here we used the crab Chiromantes dehaani as a study subject. First, we investigated differences between C. dehaani populations in fully- and semi-enclosed wetlands

Intertidal molluscs are keystone species in intertidal rocky ecosystems often used as biological indicators of human-driven perturbations. The increasing levels of harvesting pressure on these intertidal grazers, due to the expansion of human population on coastal areas, is known to affect negatively the exploited populations by altering population size-structure and decreasing abundance. A comparative

An onsite survey was conducted between June and December 2017 to characterise recreational spearfishing in the Canary Islands. This activity takes place throughout the entire year with higher catches in the summer and autumn months. The total estimated effort in 2017 was 658,798 fishing journeys; 34.5% of these journeys had no captures. The average catch per fisherman was 0.654 kg/h. It has been estimated

Small-scale fisheries (SSF) in southeast Asia contribute more food fish for human consumption than industrial fisheries and in Indonesia, employ almost 85% of the total fisheries employees. Grouper and snapper are commercially important species highly targeted, including by small-scale fishers. We estimate the spawning potential ratios (SPRs) of high-value species in a small-scale fishery in Saleh

The present study aimed to evaluate the biometric and hematological indices in Mugil curema collected in two Neotropical estuaries in the south coast of Brazil, and to investigate if such variables can be influenced by seasonality and degree of anthropogenic influence. Differences between seasons and estuarine systems were observed, where the dissolved oxygen and salinity, together with the historical

Sea urchin grazing can damage corals, but little is known how such damage can be remediated. We conducted three caging experiments in the field to determine the relationships among the portunid crab Thalamita prymna, the long-spined sea urchin Diadema setosum and the massive coral Platygyra carnosa. Experiment 1 showed that urchins caused coral tissue loss and reduced coral weight, and such effects

Enteric viruses represent a public health risk since they are involved in foodborne and waterborne outbreaks. The aim of this study was to investigate the circulation of select human enteric viruses hepatitis A virus (HAV), noroviruses (NoVGI and NoVGII), adenovirus (AdV), rotavirus (RV), astrovirus (AsV), sapovirus (SaV) and aichivirus (AiV)in wastewater and in environmental samples (groundwater,

The influences of environmental forces under different tidal and monsoonal settings on the variability of temperature and salinity, nutrient concentrations, and phytoplankton biomass (chlorophyll-a) in a shallow and narrow Setiu Lagoon were studied during the southwest monsoon, wet period of northeast monsoon, and dry period of northeast monsoon. Vertical profiles of temperature and salinity were measured

Mangroves are plants with high tolerance to salinity, tidal variation, temperature and moisture which grow in the intertidal zone. The high productivity of mangroves creates a suitable living habitat for aquatic and terrestrial organisms, including bivalves. Several bivalve species are collected as food for humans. Despite the insufficient information regarding the interaction between mangroves and

Geometric morphometrics analysis provides evidence from the adaptive character of fish to the aquatic environment resulting from an evolutionary process. Thus, phenotypic variations among individuals are primarily due to heritability of genetic factors modulated by the surrounding environment. Analyses of body morphometry can provide important information on fish population structure, an essential

Larimichthys polyactis is an economically important species in the Northwestern Pacific. In this study, characters of candidate microsatellite markers for L. polyactis were profiled and 24 polymorphic loci were developed using high-throughput sequencing method. A total of 6.085G raw data was obtained, and 7490 microsatellite-rich fragments were examined. Among them, 4199 dinucleotide, 2519 trinucleotide

Since the end of the last century, the number of new macrophytic algae introduced in the Mediterranean basin is steadily increasing. Among them, Caulerpa cylindracea is now locally established, and considered invasive. In this study, we hypothesized that the presence of C. cylindracea on hard substrates may influence macrozoobenthos communities; to test it we used a multivariate model to compare several

The extreme south of Brazil, Southwestern Atlantic, presents a vast and interesting history of elasmobranchs occurrence records. This is a transition zone between warm tropical waters cold regions, which reflects in the great species diversity, including rare occurrences and endemism. Therefore, the aim of this study is to describe the composition and conservation status of elasmobranchs that occurs

The worldwide degradation of coral reefs due to local and global threats has, in the past decade, sparked the diffusion of active coral restoration programs which aim at supporting the natural process of recovery. Yet, most coral restoration projects limit monitoring to few ecological factors. The ability of measuring the effectiveness of these projects, including their socio-economic dimensions, could

Fishery-independent surveys serve as an important data source for research, assessment and management of fishery resources. It is important to carry out some comparative studies on sampling designs so as to get the optimal design. In this study, we used computer simulations to evaluate the performance of five sampling designs to assess population densities of various fishery groups (total fishery species

Recent reports indicate that microplastics (MPs) show both temporal and spatial variations therefore, regional data collection and environmental dynamics are vital aspects of understanding the underlying sources and factors that influence the abundance and dispersion of the plastic particles. This paper presents a baseline report on the abundance of microplastics across three tidal waterlines (high

During the past decades, the São Francisco River basin encountered substantial changes due to intensive human activities such as river regularization and damming, and more recently, climate change. As a result, a decrease of streamflow in the lower São Francisco River sector has received considerable attention due to its drastic geomorphological and hydrodynamic changes. This study presents a detailed

The success of the lionfish invasion in the western Atlantic can be explained by its rapid dispersion rate, as well as a rapid population growth due to its high fecundity. The adequate invasion control measures may vary between (sub) populations of the wider Caribbean region with differences in ecological and environmental conditions. Lionfish growth studies have been conducted in several places in

With annual catches that have exceeded 1 million tons, the Argentine shortfin squid (Illex argentinus) is among the most important fisheries in the Southwest Atlantic Ocean. The objective of this study was to assess the statolith multi-elemental signature as a tool to delimit I. argentinus stocks on the Patagonian shelf and slope (Argentina) during summer 2019. Squids were caught from the Southpatagonic

Coastal and maritime areas have significant natural resources and are of great financial significance. However, the intense and reckless exploitation of natural resources has led to a degradation of the marine environment. This degradation has led countries worldwide to take into account International Agreements and Actions on the protection, conservation and sustainable management of the marine environment

It is essential from both the consumer perspective and the environmental sustainability aspect, to delve more deeply into the specific traits and conditions of fish reared in a pisciculture setting. Among the many factors that affect the latter, one of the most important is the cycling of chemical compounds in intensive rearing systems. For this reason, we analysed the stomach contents and trace metal

Meiofauna organisms play an important role in ecological and sedimentary processes in estuarine ecosystems. Recently, the application of environmental DNA (eDNA) for investigating meiofauna in different environments, improved the accessibility to its diversity and composition in a scale, frequency and depth previously unattainable. Nevertheless, little attention has been given to the description of

This study involves monitoring both benthic and planktonic abundances of the toxic dinoflagellate Ostreopsis fattorussoi in 5 stations along the Lebanese coast (Eastern Mediterranean); it extended from June 2014 to July 2016 and aims to study the dynamics of its development. Results revealed its presence year round along the coast, presenting seasonal blooms, both epiphytic and planktonic. A major

Metal concentrations were measured for Al, As, Cd, Cr, Hg, Sr, Ni, Pb and Zn in sediments throughout nine sites over two periods (dry and rainy), as well as within organism tissues for the dry period in the Mamanguape River estuary in Brazil. The potential metal bioaccumulation in tissues was evaluated using the bioaccumulation factor (BAF). The estuary suffers from great anthropogenic pressure, mainly

New fish species are being reported outside the frontiers of their natural territory. The Bay of Bengal with its adjacent coastal waters is an ideal habitat for diversified fish species. Recently, two dragonet species belonging to the Callionymidae family were discovered from the inshore coastal waters in the southern region of the Bay of Bengal, constituting a new record in the territorial waters

Phenological study of mangrove ecosystems through the collection of litterfall using litter traps is crucial to assessing mangrove productivity, management, and restoration under conditions of climate change. We investigated the phenological patterns (both vegetative and reproductive) of Xylocarpus mekongensis Pierre using litterfall in the Sundarbans, Bangladesh, over a period of 2 years. Leaf litterfall

The State Oceanic Administration (SOA) of China announced the start of a nation-wide coastal remediation project at the National Maritime Work Conference in 2016. This project is called the Blue Bay Remediation Project (BBPP), with aims and goals that all coastal provinces and municipalities need to follow. This Project can be regarded as the first comprehensive coastal remediation project in China

The goal of this study was to analyse the presence, abundance, types, size and colours of microplastics (MPs) in the soft tissue of the golden mussel Limnoperna fortunei in the freshwater-mixohaline tidal zone of Río de la Plata estuary. 240 mussels were analysed and the MPs were observed in the 96% of samples, being more abundant in the mussels that settled down close to the main sewage discharges

Composed of three channels, a bay and an extensive mangrove area, the Santos-São Vicente-Bertioga estuarine complex, which is located in São Paulo, Brazil, is one of the most important water resources for the region. It hosts the activities of the largest Brazilian port and is used for recreational and subsistence activities. Due to its complexity and different forms of use, the study of its hydrodynamics

Retention and dispersion of virtual fish larvae were compared in four regions of the Mesoamerican Barrier Reef System: Gulf of Honduras, Turneffe Atoll, southern coast of Mexico (Xcalak/Chinchorro channel) and northern Chinchorro Bank. The results indicated that in the Gulf of Honduras, 20 % of the surface particles can be retained for up to 40 days, this retention was longer at 50 m depth. The area

The main aim of this study was to improve knowledge regarding the spatial distribution of cetaceans (Balaenoptera spp.) using opportunistic sightings from purse seiners targeting tuna in tropical areas of the Atlantic Ocean (Atlantic, Eastern Central, FAO major fishing area 34) between January 2003 and December 2016. Each sighting datum collected by observers on board fishing vessels targeting tropical

Estuarine hydrodynamics is a key factor for altering the inlet and its adjacent morphodynamics. Sediment transport in estuaries is controlled by the hydrodynamic action of wind, wave, tide, currents and river runoff. Sediment transport rate near a tropical estuary i.e., Rushikulya, east coast of India was assessed based on field surveys carried out during 2008 and 2009, covering both southwest and

There is a vital necessity to provide more biological data on rays and sharks to promote efficient conservation. In this study, we assembled a database of weekly sightings to describe temporal (seasonal) patterns in the presence of elasmobranchs within an urban, semi-enclosed, landscape (Las Canteras beach, Gran Canaria Island, eastern Atlantic). Data also provided insight into their habitat use and

The food web structure prior to and following the construction of artificial reefs (ARs) in the sea area around Xiaoheishan Island was established and a comparative study was conducted using stable isotopes. A total of 49 common marine animal samples were collected and used to construct the food web. Four types of food sources were detected in this area. Following construction of the reefs, the total

The pool of particulate organic matter driven by primary production in western boundary continental margins is known to be smaller than the highly eutrophic upwelling systems of eastern margins. Its production and export, however, can be high compared to productive ocean environments due to inherent specific physical dynamics such as mesoscale instabilities driven by the boundary current. To investigate

The Bons Sinais Estuary, located in the central Mozambique, with the highest tidal range in the Western Indian Ocean, is shallow (∼10m), long (∼28km) and receives freshwater only during the wet season. These characteristics give the Estuary distinctive hydrodynamics and ecological features. Current measurements and longitudinal CTD profiling were carried out during dry season, July 2011 and November

Onshore barrier in the intertidal area is reported to influence coastal geomorphology, sediment dynamics, and erosion and accretion processes. The present study describes sediment texture and deposition pattern, and shore profile of a tidal mudflat located in the Kutubdia Island of Bangladesh. A physical barrier in the form of concrete ring structure was placed on the mudflat of experimental site and

Studying the diet of crustaceans based on the direct visual inspection of the gut contents can be difficult because they can ingest only a portion of the prey and further crush it into very small pieces, making a very few food items identifiable. Here, the usefulness of molecular methods to identify the species present in the gut contents of two crustaceans, the shore crab Carcinus maenas and the brown

Singular spectrum analysis (SSA), among other methods of decomposition based on empirical orthogonal functions (EOF), expands opportunities for statistical analysis of data fields. The authors suggest using two-dimensional version of SSA (2D-SSA) for processing in-situ hydrological data and prove that this method is applicable for this purpose. The authors consider key features and advantages of this

The phytoplankton composition in the Atlantic Ocean off the coast of Lagos were investigated between May 2015 and April 2017. Ten sampling stations were established 15 km away from the shore along the shoreline to cover the entire length of Lagos state in the Atlantic Ocean. Phytoplankton samples were collected monthly at each sampling station for twenty-four months, using a 55μm mesh size standard

Monsoon-driven changes of environmental factors have been reported to be significantly variable and affects the phytoplankton community in tropical waters. This study examined the monsoonal changes of environmental parameters and the coastal phytoplankton community, including potential harmful algal bloom species, in the waters of Kota Kinabalu, Sabah, Malaysia. Bi-weekly observations were conducted

This paper explores that whether exist the threshold effect of financial development in Chinese marine economic growth. The result confirms that a single-threshold effect does exist and show an U-shape relation between these two variables. Financial development enhances marine economic growth only after exceeding a distinct threshold levels of initial financial sector development, which is different

The coastal zone is defined as the area where the land meets the sea. Though of significant resource and ecological value, it is ecologically vulnerable to human activities and natural disasters.In the past 70 years, the coastal wetlands of China have experienced ecological problems such as wetland degradation, coastal erosion, environmental pollution and alien species invasion due to natural and man-made

Recognizing genetic stocks can guide efficient management efforts for fisheries. This would guarantee sustainable exploitation of present fisheries, assist the recovery of depleted ones, and ensure the maintenance of different genetic lineages for the target species. The swimming crab Callinectes danae Smith, 1869 is an economically important species for several local western Atlantic coastal populations

The present study aimed to analyse the influence of physico-chemical properties on zooplankton assemblages and species diversity in a lagoon system. The study was carried out in coral reef lagoon of Kavaratti Island, Lakshadweep Archipelago, India during the monsoon of the year 2017. Zooplankton assemblages, distributed among 56 taxonomic units, were found to be dominated by copepods (63.27%, 34 taxa)

Polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in sediment cores of the microtidal coastline of Lagos lagoon were investigated for the occurrence, sources and depositional contamination history. Sediment core samples were collected using the Wildco @ hand corer (50 cm) SS kit and extracted using a 40 mL mixture of hexane and acetone (1:1), and cleaned-up using 10 mm ID

The past few decades have seen a massive increase in global coastal eutrophication, for which nitrogen enrichment is usually the primary causative agent. Based on field monitoring data from coastal waters during dry, wet, and normal flow seasons in 2016, the distribution characteristics of dissolved inorganic nitrogen (DIN) and its influencing factors were studied. The level of DIN pollution was evaluated

In recent decades, maritime traffic has been increasing globally. Introduction vectors involving ships, hull fouling and ballast water are often cited as having high risk for introducing marine non-indigenous species (NIS) worldwide. Due to its geographical location, Madeira Island (Portugal) had a significant role in past maritime connections, with the ability to serve as a “port of call” facility

Methylmercury (MeHg) concentrations in three different species from different trophic levels with different amounts of Hg exposures were determined for the first time in the EEZ of Qatar. Sampling was conducted during autumn 2017 in two nearshore (Palm Tree and Al-Besheriya Islands) and two offshore locations (Sherawoo and Ishat Islands). Fish muscle and liver tissues were analyzed according to the

In temperate regions, macroalgae are naturally abundant habitat builders for many organisms of ecological and economic importance. Hence, macroalgae are good targets for monitoring studies based on colonization processes as, through them, it is possible to sample the epifauna that uses them as habitat. Nevertheless, macroalgae collection may not be sustainable, can compromise the survival of the target

Marine litter (ML) survey was conducted on 10 beaches along the Bulgarian Black Sea coast in summer period 2017. The distribution of most common Single-use plastics (SUPs) and Fishing gear containing plastics was evaluated, with SUPs representing 28.3% and Fishing gear — 3.4% of the total ML, as well as items from Fishing activities being 5.5% of the total ML.Top three of the SUPs were: Cigarette butts