The global invasive species, Spartina alterniflora has caused significant damage to coastal wetland ecosystems in China. This study evaluated the effectiveness and ecological impacts of two S. alterniflora management strategies in the Yangtze River estuary: Haloxyfop-R-methyl application and repeated mowing (once at the early flowering stage and once nine weeks later). The effectiveness of S. alterniflora

Urbanization driven by population growth, development and tourism increasingly threatens even remote areas, potentially impacting biodiversity. This is particularly concerning given the ecological and economic importance of biodiversity, especially for island nations, where ecotourism plays a crucial role in the economy. This study examines urban-driven degradation effects on the nurseries of lemon

Bivalves are often used as sentinel organisms for assessing microplastic (MP) pollution in marine ecosystems. However, MP contamination in estuaries remains under-studied despite their high vulnerability to this type of pollution. This study aimed at evaluating MP contamination in Scrobicularia plana from two estuaries in SW Spain (Guadiana and Guadalquivir), subjected to different levels of human

Excessive inputs of nitrate from land-based sources can lead to coastal eutrophication, and accurate identification of nitrate sources is an important prerequisite for the effective control of eutrophication. In this study, we selected Jiaozhou Bay, a typical eutrophic bay, as the case study area. Using nitrate concentration, nitrogen and oxygen stable isotope data, along with analytical techniques

A hypoxic water mass in Mikawa Bay, a semi-enclosed coastal area in Japan, dissipated significantly on August 20, 2020. Observational data suggest that the dissipation resulted from the advection of oxygen-rich water masses from the bay mouth and/or the open sea. However, the precise mechanism driving the dissipation of hypoxia remains unclear. In this study, using an ecological hydrodynamic model

This study investigates the dispersion of floating plastic from Recife-PE harbor using a particle tracking model and examines contaminants in fishing nets collected from Brazilian beaches. Simulations were conducted for both dry and rainy seasons. Fishing nets were collected from eight beaches for analysis. The plastic movement simulation showed particles dispersed 0.41 km southward during the dry

This study aimed to examine the validity of benthic foraminifera-based indices – Foraminiferal Stress Index (FSI), diversity index Exp(H'bc), and Ecological Quality Ratio (EQR) – for evaluating estuarine environmental conditions and supporting palaeoecological reconstructions, focusing on the Sado estuary (southwest Portugal). Located near heavily industrialized urban areas and designated as a Nature

Storm-petrels are among the seabird species with the highest frequencies of marine plastic ingestion, owing to their surface pick-up foraging behavior. However, there has been little assessment of plastic-related pollutants in these birds. Tristram's storm-petrels (Hydrobates tristrami), in particular, inhabit the North Pacific Central Gyre, one of the most polluted marine regions in the world. This

This study evaluates the degradation and detoxification of okadaic acid (OA), a marine biotoxin, through UV-assisted photochemical processes using environmentally relevant OA concentrations. Experiments were conducted in distilled water (DW) and artificial seawater (ASW), applying two UV sources: UV-LED (λmax = 275 nm) and low-pressure mercury lamp (LP-Hg; λ = 254 nm), combined with hydrogen peroxide

Mangrove ecosystems are vital for maintaining biodiversity, purifying water, sequestering carbon, and mitigating climate change in coastal regions. The geographical distribution of mangrove forests has been severely affected by global warming; therefore, it must be predicted under future climate scenarios to provide a scientific basis for conservation and restoration. In this study, we employed the

Assessing long-term trends in zooplankton community structure is essential for the monitoring of aquatic systems. However, there is paucity of information on zooplankton community structure in Lake Tana's northern gulf. Therefore, this study aimed to provide baseline information on the spatio-temporal variations in zooplankton assemblages in Lake Tana's northern gulf, focusing on water quality parameters

Contamination by organic pollutants, even in remote regions, poses a growing threat to wildlife, including seabirds. However, for many seabirds breeding at high latitudes, both the extent and nature of contaminant exposure remain largely unknown. This study aimed to identify the persistent organic pollutants (POPs) present in the Svalbard Atlantic puffin Fratercula arctica at the northern limit of

Despite the significant ecological and human health risks posed by microplastic (MP) pollution in estuarine environments, documentation of their distribution remains absent in most water quality analyses. This study evaluated the distribution and characteristics of MPs in surface waters of Narragansett Bay, RI, the largest estuary in New England, which exhibits a strong north-to-south human population

Significant amount of microplastics (< 5 mm) were transported into the South China Sea via Pearl River Estuary. However, comprehensive studies on the occurrence and retention of microplastics in this estuarine system were still limited. To fill this gap, we investigated the distribution of microplastics in still-water ecosystems and running water ecosystems in the west bank of the Pearl River Estuary

We consider appropriate indices for hazardous, sharp or toxic, litter items. It is demonstrated that a previously published hazardous items index for litter beach monitoring is dependent on the study area and so cannot be compared across different studies with different study areas. We suggest two alternative indices, based on the number of hazardous items per unit area and the percentage of total

Microplastics pose a serious threat to marine ecosystems. Their presence in deep-sea sediments has been well-documented. Sediment gravity flows (SGFs) can transport microplastics to the deep sea. The transport mechanisms of microplastics carried by sand-laden SGFs have been investigated experimentally, however, these mechanisms differ from transport processes within clay-laden SGFs due to the differences

The formation of ‘seawater-in-oil’ emulsions reduces the effectiveness of current oil spill response operations such as the physical recovery of oil with skimmers, or oil dispersion with chemical dispersants, due to increases in volume and viscosity. This becomes even more acute in cold regions because of the potential for below-freezing temperatures and floating ice. Low temperatures increase oil

Landsat images reveal that the lagoon outlet periodically closes for short periods, impacting heavy metal concentrations, foraminiferal ecology and distribution. Strong northern winds induce oblique waves toward the coast, causing the lagoon mouth to close intermittently. The relationship between heavy metal concentrations and benthic foraminiferal species was examined during both lagoon mouth closure

This study investigates the effects of Stokes drift, wind drift factor and angle on oil transport using the MEDSLIK-II model, focusing on the 2019 P-53 platform spill in Brazilian waters. Model accuracy was assessed by the difference in distances between simulated and observed trajectories from Synthetic Aperture Radar. Sixteen simulations tested different wind drift angles (10°–45°), drift factors

Thirty-four persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and pesticides, were comprehensively analyzed using GC–MS/MS across 260 samples. The chromatographic analysis included hospital wastewater, effluent and influent from a wastewater treatment plant, coastal seawater, sediments, and marine biota, specifically seagrass

Seagrass beds ecosystems, which are critical yet declining blue carbon ecosystems worldwide, play crucial roles in terms of biodiversity and carbon sequestration. Free-living marine nematodes are useful biological indicators of various environmental disturbances. The functional traits and community structure of free-living marine nematodes were studied in seagrass beds (SG) and the neighboring unvegetated

Pile driving noise has emerged as a major anthropogenic stressor in marine ecosystems, yet its effects on microalgae remain largely unexplored. This study investigated the morphological and physiological responses of three marine microalgae species (Isochrysis galbana, Dunaliella tertiolecta, and Phaeodactylum tricornutum) to simulated pile driving noise. The analysis included assessments of growth

The accumulation of marine litter in the oceans has generated increasing concern within the scientific community due to its significant impact on ecosystems. Most research has focused on coastal areas and surface waters, leaving a gap in knowledge regarding deep-sea environments. This study aimed to assess the presence, composition, and distribution of marine litter in deep waters of the Colombian

This study assesses polycyclic aromatic hydrocarbon (PAH) concentrations in yellowfin tuna (Thunnus albacares) collected from bycatch off southern Taiwan. Twenty juvenile tuna were analyzed for body weight, total length, and condition factor (K) values, ranging between 1.11 and 1.50, indicating good health. Muscle tissues were extracted, freeze-dried, and analyzed via gas chromatography–mass spectrometry

Marine sand and gravel extraction alters seabed structure and biodiversity, but recovery dynamics after cessation remain less understood. This study investigates the recovery of macrobenthic communities and morpho-sedimentary characteristics in two areas after cessation of aggregate extraction in a tidal sandbank environment. By combining long-term monitoring data, including multibeam echosounder surveys

The Bohai Sea, a semi-enclosed marginal sea in northeastern China, plays a critical role in regional coastal ecotourism and marine biodiversity. However, intensifying industrialization and urban expansion have raised significant environmental concerns, particularly regarding trace metal contamination in coastal sediments that threaten both ecosystem services and the long-term viability of ecotourism

Living in potentially burdened waters and prey on loaded species, marine mammals are sentinels for microplastic (MP) pollution. Here, seven different species of cetaceans were investigated covering baleen (Mysticeti) and toothed (Odontoceti) whales stranded along the German coast between 2016 and 2021. Intestinal and faecal samples of 12 sperm whales, three minke whales, two dolphin species, one long-finned

Seaweeds are a promising dietary resource because they contain essential trace elements. Meristotheca senegalensis and Hypnea musciformis are two economically important seaweeds in the coastal regions of Senegal. However, they can bioaccumulate potentially toxic trace elements, such as arsenic (As), cadmium (Cd), and lead (Pb), posing potential health risks. This study analyzed the elemental composition

Microplastics are pervasive in marine environments, posing potential risks to aquatic life and human health. This study investigates the trophic transfer of microplastics in marine invertebrates, focusing on the predator Asterias rubens and the filter-feeder Mytilus edulis. Conducted at the White Sea Biological Station, the experiment used polyethylene microspheres (40—48 μm) to trace microplastic

Hybrid ocean thermal energy conversion (H-OTEC) power plants are an emerging source of renewable energy, necessitating research on their environmental impact to support their wider implementation. Benthic communities are highly sensitive to ammonia–nitrogen (NH₄-N) stress; however, studies on the effects of NH₄-N from OTEC operations on coastal ecosystems remain limited. This study evaluated the influence

The OSPAR litter program was promoted to investigate the abundance and types of the most common macro-litter items on European beaches. This baseline analyses the data collected under the program on the North Atlantic Iberian coast between 2002 and 2020. The dataset includes surveys conducted on 25 beaches along the entire continental Portuguese coastline, as well as the shores of the Galicia and Andalusia

This study investigates the impact of elevated salinity levels on the growth and photosynthetic efficiency of the coral endosymbiont Symbiodinium sp. isolated from Platygyra daedalea in the coral reefs of Qatar. Cultures were exposed to a range of salinities (30–70 psu) over a 11-day incubation period under controlled laboratory conditions. Results revealed a significant decline in cell density and

This study investigated the distribution and biomagnification pathways of total mercury (THg) concentrations in three mesopelagic species in the Tasman Sea: two fish (Diaphus hudsoni, Metelectrona ventralis) and one predatory squid (Lycoteuthis lorigera). THg concentrations in muscle tissue ranged from 0.06 to 0.26 μg g−1 dry weight (DW) and were consistently higher in liver tissue (0.15–0.96 μg g−1

Anthropogenic pressure and climate change have severely impacted coastal ecosystems. Coastal environmental issues have become a major concern worldwide. The ecological stability of coastal waters requires the establishment of a scientific and systematic conservation program. This paper explores the relationships between riverine inputs and the nutrient structure of the coastal waters of Dalian. It

The Gulf of Khambhat (GoKh), India is impacted by chemical pollution from industrial and anthropogenic activities. This study assesses the presence and bioaccumulation of persistent organic pollutants (POPs) in coastal waters, sediments, and benthic macroinvertebrates (Polychaeta, Gastropoda, Malacostraca). Four POPs groups such as polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls

Offshore wind farms (OWFs) are a key technology for renewable energy production. In the context of increased deployment of offshore energy infrastructure, it is important to estimate the potential chemical impacts of OWFs on the environment. These include emissions from galvanic anodes made of AlZnIn alloys, which may also contain other elements like Ga, Cd and Pb. The mussel Mytilus edulis is both

Oil spill response (OSR) techniques are traditionally evaluated based on their ability to remove oil from the environment and to reduce the environmental consequences of the released oil. The objective of this study was to quantify the climate effect of different OSR techniques so this can be included in the evaluation of the different techniques.

Paint fragments, often linked to ship paint, contribute to more than half of the microplastic pollution in the ocean and waterways. This case study analyses the upstream impact on microplastic pollution in the shipbuilding industry. We evaluate the supply chain activities and decisions related to ship paint and examine how these can impact microplastic pollution. This study is the first to document

The rapid development of mariculture would cause a considerable impact on the coastal carbon cycle. For investigating the source and contribution of mariculture to sedimentary organic matter, the composition of sediment cores in Haizhou Bay were analyzed, including 210Pbex activity, sedimentary total organic carbon (TOC), total nitrogen (TN), the stable carbon (δ13C) and nitrogen (δ15N) isotopic composition

Environmental DNA (eDNA) metabarcoding has emerged as a powerful method for assessing the environmental impacts of marine Atlantic salmon aquaculture by identifying bacterial bioindicators and inferring biotic indices. However, because this approach relies on the PCR amplification of 16S rRNA gene fragments, it may introduce errors that compromise bioindicator reliability. In contrast, metagenomic

Microplastics (MPs) were surveyed in the fjords of Tunu (East Greenland), contributing important information to the scarce database on plastics in the Arctic. A total of 18 subsurface water samples were collected at eight stations along the northeast coast of Kalaallit Nunaat (Greenland) in August 2022. Sampling of the MPs was optimized and validated using traceable metal-doped model MPs. Recovery

The 29,000 km coastline of British Columbia (B.C.), Canada, is an area with increasing industrial and shipping activity. Pollution Tracker is the first coast-wide marine pollution monitoring program, generating high resolution contaminant data for sediment samples. Surficial sediment samples were collected as part of the Pollution Tracker Program from 51 sites between 2015 and 2017. Polycyclic aromatic

Plastic pellets form the second largest source of microplastics in the marine environment and are found around the world. The origin of plastic pellet pollution is often linked to land-based industrial sites and transportation. However, recent spills resulting from accidents with ships have highlighted the significance of maritime shipping as a source of plastic pellet pollution. In addition, plastic

Petrochemical industrial zone wastewater is a complex source of pollutants. This study used a One Health framework to investigate the impact of typical petrochemical industrial zone wastewater discharge on adjacent bay. An analysis was conducted on the content and distribution characteristics of heavy metals (HMs) and total petroleum hydrocarbons (TPHs) in the seawater, sediment, and organisms. The

Remote sensing plays a crucial role in the detection and monitoring of oil spills at sea, aiding in emergency response planning and monitoring routines. Despite significant progress in this field, estimating oil thickness remains challenging, impacting response efficacy and liability determination. Traditional methods like the Bonn Agreement Oil Appearance Code (BAOAC) are commonly used operationally

This study explores the intersection of sustainable coastal tourism and the Blue Economy by examining the impacts of fishing-tourism, pleasure-fishing, and Pescatourism in Algeria's coastal regions, with a focus on the province of Jijel. We look at how these activities help protect the environment, grow the economy, and improve the health of the community using a mix of research methods, such as surveys

Iron is an important trace metal in regulating the ocean biogeochemical cycle. Through in situ field measurements using reverse flow dual-injection analysis (rFDIA), we demonstrate a significant spatial heterogeneity in iron distribution in the water column in three Chinese seagrass beds. Fe2+ concentrations ranged from 2.38 to 10.82 nM and dFe from 10.44 to 18.35 nM across 26 sampling stations. The

The transport and deposition of particle-bound pollutants in estuarine systems remain poorly constrained due to dynamic hydrological complexities. Particle-reactive radionuclides (7Be, 210Pb, and 234Th) are effective tracers for studying particle transport. Two coordinated sampling cruises were conducted in the Jiulong J Estuary under normal hydrological conditions in both the wet (July 2014) and dry

Polycyclic Aromatic Hydrocarbons (PAHs) are bioaccumulative and highly toxic, posing a significant threat to the security of marine ecosystems. Bivalves are still one of the marine invertebrates with high species diversity despite experiencing environmental pollution. In this paper, we focused on the detoxification metabolism and toxicological impacts of a representative mixture of PAHs (Phenanthrene:

Microplastics (MPs) have emerged as a major environmental concern in marine ecosystems, ranking among the most significant contaminants. However, their effects on the early life stages of marine fish remain poorly understood. In this study, we examined the impact of fluorescent low-density polyethylene (LDPE) microspheres on the hatching success, mortality, ingestion, growth, and excretion in eggs

The thick-shelled mussel, Mytilus coruscus, plays a vital role in marine ecosystems but is vulnerable to pollutants. Polyamide microplastics (PA-MPs), such as nylon, can adsorb harmful bacteria like Vibrio parahaemolyticus, posing threats to bivalves and economic risks to aquaculture. In this study, M. coruscus was exposed to four treatments over 14 days: (1) control, (2) PA microplastics (50 particles/L)

With the increased global focus on environmental protection, green ships have emerged as the cornerstone to the maritime industry's long-term development. Based on the knowledge graph method, this paper uses bibliometric analysis to examine the research progress of green ships in a multidimensional perspective. Firstly, sort out the definition and connotation of green ships, and clarify their greening

Marine debris mostly originates from land, but the wide variety of sources, types, and transport pathways make understanding of their flow and fate difficult. Vietnam is a developing country with high production and emission of plastic to the sea, and better understanding of shoreline areas as sources, sinks or ephemeral storage areas is needed to inform management. Using the city of Nha Trang, Vietnam

Concentrations of metals (Cu, Cd, Cr, and Pb) were assessed in the skeleton (sCu, sCd, sCr, and sPb) and tissue (sCu, sCd, sCr, and sPb) of the scleractinian coral Mussismilia hispida, alongside pesticide (organophosphate and organochlorine) concentrations and biomarker (Ca-ATPase and carbonic anhydrase) responses in tissue samples. Corals were collected from four sites at varying distances (2.0–9

Submarine groundwater discharge (SGD) significantly affects groundwater dynamics and the transport of dissolved nutrients and organic matter in coastal zones. This study characterizes SGD processes in Daya Bay, China, by analyzing sea surface temperatures (SST) retrieved from seventeen Landsat 8 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) images collected between 2013 and 2020

A river plume indicates the dispersion and transport path of pollutants from runoff, monitoring the spatiotemporal variation of river plume distribution from space is crucial for marine environmental governance. This study focuses on the Pearl River Plume (PRP), and takes the Pearl River Delta coastal waters, China as study area. We developed a machine learning-based sea surface salinity (SSS) estimation

In the age of anthropocene, elevated temperatures and pesticide pollution represent critical environmental challenges with profound ecological implications. As crucial bio-indicator, meiobenthic organisms play a pivotal role to assess the impacts of these disturbances on ecosystem health. Despite their ecological significance, the combined impacts of these stressors on meiobenthic community structures

Quantifying greenhouse gas (GHG) emissions from coastal environments is essential for understanding their role in climate change. Ports and harbors, which are semi–enclosed coastal systems, often experience nutrient accumulation from human activities, leading to GHG emissions. Jeju Island, with numerous ports and harbors along its coast, provides an ideal location for studying GHG emissions in these

Surface sediments play a crucial role in freshwater ecosystems as sinks for harmful pollutants and indicators of aquatic health. While localized studies have provided insights into pollution levels, a global assessment of freshwater sediments has been lacking. This study addresses this gap by analyzing data from 149 freshwater sites across 32 nations using multivariate statistical methods (PCA and

The Bohai Sea Rim is densely populated and highly industrialized, facing threats from large-scale land reclamation, riverine pollutant discharge, and other anthropogenic activities. Aiming to improve seawater quality, the optimal allocation of land-based total nitrogen (TN) loads among four major rivers around the Bohai Sea has been studied before. However, the individual and combined impacts of coastline