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Marine Pollution Bulletin

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https://www.readbyqxmd.com/read/28818605/anthropogenic-pbde-and-naturally-produced-meo-pbde-brominated-compound-levels-in-bizerte-lagoon-clams-ruditapes-decussatus-levels-and-human-health-risk-assessment
#1
Yassine El Megdiche, Walid Ben Ameur, Hammami Bèchir, Sihem Ben Hassine, Barhoumi Badreddine, Soufiane Touil, Mohamed Ridha Driss, Ethel Eljarrat, Damia Barceló
Information on the occurrence of organobrominated compounds in bivalves from Tunisia is scarce. To the best of our knowledge, this is the first report of these compounds in clams from Tunisia. The aim of this study is to measure natural and synthetic organobrominated compound concentrations and evaluate congener distribution and pollution sources in a clam species (Ruditapes decussatus) from three sites of the Bizerte Lagoon. Total synthetic organobrominated pollutant levels in clam ranged from 34.8 to 188ngg(-1)lw...
August 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28818604/newly-discovered-seagrass-beds-and-their-potential-for-blue-carbon-in-the-coastal-seas-of-hainan-island-south-china-sea
#2
Zhijian Jiang, Songlin Liu, Jingping Zhang, Chunyu Zhao, Yunchao Wu, Shuo Yu, Xia Zhang, Chi Huang, Xiaoping Huang, Manoj Kumar
Eight new seagrass beds were discovered along the coastline of Hainan Island in South China Sea with an area of 203.64ha. The leaf N content of all seagrasses was above the median value, indicative of N limitation, with their C:N ratio recorded significantly lower than the limiting criteria. This suggested that N is not limiting but in replete status. Further, the lower C content observed in the seagrass leaves was accompanied by higher nutrient concentration. The mean seagrass biomass C was 0.23±0.16MgCha(-1), while the average sediment organic carbon (SOC) stock was 7...
August 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28818603/effects-of-suspended-sediments-and-nutrient-enrichment-on-juvenile-corals
#3
Adriana Humanes, Artur Fink, Bette L Willis, Katharina E Fabricius, Dirk de Beer, Andrew P Negri
Three to six-month-old juveniles of Acropora tenuis, A. millepora and Pocillopora acuta were experimentally co-exposed to nutrient enrichment and suspended sediments (without light attenuation or sediment deposition) for 40days. Suspended sediments reduced survivorship of A. millepora strongly, proportional to the sediment concentration, but not in A. tenuis or P. acuta juveniles. However, juvenile growth of the latter two species was reduced to less than half or to zero, respectively. Additionally, suspended sediments increased effective quantum yields of symbionts associated with A...
August 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28818602/operational-modelling-of-bigeye-tuna-thunnus-obesus-spatial-dynamics-in-the-indonesian-region
#4
P Lehodey, I Senina, T A Wibawa, O Titaud, B Calmettes, A Conchon, B Tranchant, P Gaspar
With INDESO, Indonesia has implemented a system for the monitoring and management of its tuna resources. Despite increasing catch, very few is known about the dynamics and real abundance of tuna species in the Indonesian waters and adjacent oceanic regions. The SEAPODYM model was implemented in an operational chain of production for the Indonesian region to simulate tuna spatial dynamics in realtime. This challenging objective imposed developing a global scale model at coarse resolution to provide initial and boundaries conditions of the regional model...
August 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28811037/effects-of-metal-contamination-on-the-gene-expression-profile-of-two-benthic-species-cerastoderma-edule-and-ruditapes-philippinarum
#5
Raquel Rodrigues, Joana Lourenço, Patrícia Pereira, Susana Carvalho, Sonia Mendo
This study aimed to identify new biomarkers for metal exposure in two bivalve species. Suppressive Subtractive Hybridization (SSH) was employed to evaluate the transcriptomic response of Cerastoderma edule and Ruditapes philippinarum to metal pollution. Protein synthesis and catalytic activity were the most affected metabolic processes in C. edule and R. philippinarum, respectively. Also, different genes responded to the effect of contamination in each species. The different response observed in both species reinforces the importance of including more than one bioindicator species in risk assessment studies...
August 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28807422/assessment-of-heavy-metal-pollution-in-surficial-sediments-from-a-tropical-river-estuary-shelf-system-a-case-study-of-kelantan-river-malaysia
#6
Ai-Jun Wang, Chui Wei Bong, Yong-Hang Xu, Meor Hakif Amir Hassan, Xiang Ye, Ahmad Farid Abu Bakar, Yun-Hai Li, Zhi-Kun Lai, Jiang Xu, Kar Hoe Loh
To understand the source-to-sink of pollutants in the Kelantan River estuary and the adjacent shelf area in Malaysia, a total of 42 surface sediment samples were collected in the Kelantan River-estuary-shelf system to analyze for grain size, total organic carbon (TOC) content, Al and heavy metals (Cr, Ni, Cu, Zn, Cd and Pb). The surficial sediments were mainly composed of clayey silt and the TOC content in sediments decreased from the river to the shelf. The surficial sediments experienced Pb pollution; Cr only showed a certain level of pollution in the coastal area of the estuary but not in other areas, and Ni, Cu, Zn, and Cd showed no pollution...
August 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28807421/seagrass-science-is-growing-a-report-on-the-12th-international-seagrass-biology-workshop
#7
Edward J Hind-Ozan, Benjamin L Jones
This conference report describes the programme of the 12th International Seagrass Biology Workshop, its highlights, areas of growth for the workshop, and potential future directions for the workshop series. The report is written with an eye toward where it fits within the field of seagrass research.
August 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28807420/how-the-dispersant-corexit-impacts-the-formation-of-sinking-marine-oil-snow
#8
Uta Passow, Julia Sweet, Antonietta Quigg
The vertical transport of sinking marine oil snow (MOS) and oil-sediment aggregations (OSA) during the Deepwater Horizon (DwH) spill contributed appreciably to the unexpected, and exceptional accumulation of oil on the seafloor. However, the role of the dispersant Corexit in mediating oil-sedimentation is still controversial. Here we demonstrate that the formation of diatom MOS is enhanced by chemically undispersed oil, but inhibited by Corexit-dispersed oil. Nevertheless, the sedimentation rate of oil may at times be enhanced by Corexit application, because of an elevated oil content per aggregate when Corexit is used...
August 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28807419/a-method-to-assess-the-evolution-and-recovery-of-heavy-metal-pollution-in-estuarine-sediments-past-history-present-situation-and-future-perspectives
#9
Javier F Bárcena, Inigo Claramunt, Javier García-Alba, María Luisa Pérez, Andrés García
A methodology to assess the historical evolution and recovery of heavy metal pollution in estuarine sediments was developed and is presented here. This approach quantifies the distribution of heavy metals in sediment cores, and investigates the influence of anthropogenic activities and/or core locations on the heavy metal pollution, by proposing and using sediment quality indices and polynomial regressions. The method has been applied to the Suances Estuary confirming its suitability as a comprehensive and practical management tool...
August 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28807418/assessment-of-metallic-trace-elements-in-the-muscles-and-fins-of-four-landed-elasmobranchs-from-kuala-terengganu-waters-malaysia
#10
Meng Chuan Ong, Shi Ling Gan
A study had been carried out to determine Cu, Zn, Cd, Hg and Pb concentrations in the muscle and fins of four elasmobranchs species namely spot-tail sharks, milk sharks, whitespotted bamboo sharks and whitespotted guitarfish from Pulau Kambing LKIM Fishery Complex, Kuala Terengganu, Malaysia. Zinc level was found to have the highest concentration whereas Cd had the lowest concentration in both organs. By comparing both organs, metals concentrations in fins of all elasmobranchs species were higher than muscle...
August 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28807417/fate-and-stability-of-polyamide-associated-bacterial-assemblages-after-their-passage-through-the-digestive-tract-of-the-blue-mussel-mytilus-edulis
#11
Katharina Kesy, Alexander Hentzsch, Franziska Klaeger, Sonja Oberbeckmann, Stephanie Mothes, Matthias Labrenz
We examined whether bacterial assemblages inhabiting the synthetic polymer polyamide are selectively modified during their passage through the gut of Mytilus edulis in comparison to the biopolymer chitin with focus on potential pathogens. Specifically, we asked whether bacterial biofilms remained stable over a prolonged period of time and whether polyamide could thus serve as a vector for potential pathogenic bacteria. Bacterial diversity and identity were analysed by 16S rRNA gene fingerprints and sequencing of abundant bands...
August 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28807416/phthalates-heavy-metals-and-pahs-in-an-overpopulated-coastal-region-inferences-from-abruzzo-central-italy
#12
Francesco Stoppa, Mariangela Schiazza, Jacopo Pellegrini, Francesco Antonio Ambrosio, Gianluigi Rosatelli, Maria R D'Orsogna
Phthalates are an emerging class of environmental pollutants whose distribution and effects in aquatic environments are not well characterized. We analyzed intertidal and emerged beach sediments from the Abruzzo coastline, along the Adriatic Sea, finding significant phthalate concentrations in marine sediments. Phthalate baseline levels in the intertidal environment, marked by substantial interplay of sediment, water and air, were determined. We used statistical rank methods to select representative phthalate compositions, for which we derived risk levels for ingestion, dermal absorption and inhalation...
August 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28807415/the-impact-of-seismic-air-gun-exposure-on-the-haemolymph-physiology-and-nutritional-condition-of-spiny-lobster-jasus-edwardsii
#13
Quinn P Fitzgibbon, Ryan D Day, Robert D McCauley, Cedric J Simon, Jayson M Semmens
There is a critical knowledge gap regarding the impacts of seismic air gun signals on the physiology of adult crustaceans. We conducted four controlled field experiments to examine the impact of seismic acoustic signals on spiny lobster, Jasus edwardsii. Seismic air gun exposure suppressed total haemocyte count (THC) for up to 120days post-exposure, suggesting a chronic negative impact of immune competency. THC levels after 365days post-exposure, were elevated two fold, potentially indicating an immune response to infection...
August 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28802660/heavy-metal-distribution-in-blood-liver-and-kidneys-of-loggerhead-caretta-caretta-and-green-chelonia-mydas-sea-turtles-from-the-northeast-mediterranean-sea
#14
Mustafa Yipel, İbrahim Ozan Tekeli, Cafer Tayer İşler, Muhammed Enes Altuğ
The aim of the present study was to determine the concentrations of the most investigated environmentally relevant heavy metals in two highly endangered sea turtle species (Caretta caretta and Chelonia mydas) from the important nesting area on the Northeast Mediterranean Sea. The highest mean concentration was of Fe, while Hg and Pb were lowest. All tissue concentrations of Al, As, Fe and Mn were significantly different between the species. In particular, As, Cd, Cu, Mn, Ni, Se, Zn concentrations were lower in Caretta caretta and Cd, Hg, Mn, Zn concentrations were lower in Chelonia mydas than those reported in other parts of the world...
August 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28802659/hypoxia-off-the-changjiang-yangtze-river-estuary-and-in-the-adjacent-east-china-sea-quantitative-approaches-to-estimating-the-tidal-impact-and-nutrient-regeneration
#15
Zhuo-Yi Zhu, Hui Wu, Su-Mei Liu, Ying Wu, Da-Ji Huang, Jing Zhang, Guo-Sen Zhang
Large areas of hypoxia have been reported off The Changjiang Estuary and in the East China Sea. Five cruises, covering winter, spring, and summer, were carried out from 2007 to 2013 in this region, and in August 2013 (summer), an extensive hypoxic event (11,150km(2)) was observed, which was characterized by an estimated bulk oxygen depletion of 5.1 million tons. A strong tidal impact was observed associated with the bottom oxygen depletion, with the periodicity of diel variations in dissolved oxygen being 12h (i...
August 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28802658/detecting-long-term-temporal-trends-in-sediment-bound-metals-in-the-western-adriatic-mediterranean-sea
#16
Marilia Lopes-Rocha, Leonardo Langone, Stefano Miserocchi, Patrizia Giordano, Roberta Guerra
Major and trace metal concentrations were determined in western Adriatic sediment cores. Based on sediment chronology, the earliest anthropogenic influence appeared as a Zn and Pb increase in the Po River prodelta starting from ~1914. The increasing contamination signal of these trace metals propagated southward as far as 450km with a growing delay, taking ~10years to reach the south Adriatic Sea. Although greater inventories of excess trace metals in the northern sector pointed to the influence of the intense human activities in the Po River drainage basin and Venice lagoon system, we observed a reduction of excess trace metals from mid-1980s, related to the implementation of stricter environmental regulations on chemical wastewaters...
August 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28802657/occurrence-of-pharmaceuticals-and-uv-filters-in-riverine-run-offs-and-waters-of-the-german-baltic-sea
#17
Kathrin Fisch, Joanna J Waniek, Detlef E Schulz-Bull
The occurrence of pharmaceuticals and personal care products (PPCPs) in the marine environment is of great concern. This study was done to determine the emergence of eight pharmaceuticals and eleven ultraviolet filters (UV-Filters) in 5 rivers/streams discharging into the Baltic Sea. Furthermore, a focus was put on the influence of wastewater treatment plant as indirect source and the occurrence of the PPCPs in close beach proximity. Two pharmaceuticals (sulfamethoxazole, salicylic acid) and two UV-filters (2-phenylbenzimidazole-5-sulfonic acid, octocrylene) were detected in all analyzed water samples, with concentration ranging from 0...
August 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28800911/distribution-profiles-of-per-and-poly-fluoroalkyl-substances-pfass-and-their-re-regulation-by-ocean-currents-in-the-east-and-south-china-sea
#18
Hongyuan Zheng, Feng Wang, Zhen Zhao, Yuxin Ma, Haizhen Yang, Zhibo Lu, Minggang Cai, Minghong Cai
We investigated the distribution of 17 individual per- and polyfluoroalkyl substances (PFASs) in 42 surface water samples collected from the East and South China Seas (7.0-36.0°N, 110.0°N-123.0°E). Concentrations of 7 individual PFASs, including perfluorobutane sulfonate (PFBS), perfluorohexane sulfonate (PFHxS), perfluoropentanoic acid (PFPA), perfluorohexanoate (PFHxA), perfluoroheptanoate (PFHpA), perfluorooctanoic acid (PFOA), and perfluorooctane sulfonamide (FOSA), were quantified in the East China Sea, but only concentrations of PFOA and FOSA were quantified in the South China Sea...
August 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28800910/chronology-of-anthropogenic-impacts-reconstructed-from-sediment-records-of-trace-metals-and-pb-isotopes-in-todos-os-santos-bay-ne-brazil
#19
R L B Andrade, V Hatje, P Masqué, C M Zurbrick, E A Boyle, W P C Santos
The evolution of the impacts of anthropogenic activities in Todos os Santos Bay was evaluated by profiles of trace metals and Pb isotopes determined in sediment cores. Fluxes of metals increased up to 12, 4 and 2 times for Cu, Pb, and Zn, respectively, compared to those recorded in the beginning of the 20(th) century. Stable Pb isotopes identified a decommissioned lead smelter and burning of fossil fuels as the main sources of Pb. Most metals showed minor to moderate enrichment factors (EF<4), but Cu and Pb were highly enriched (EF=28 and 6, respectively) at the Aratu harbor...
August 8, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28797542/modulation-of-spartina-densiflora-plant-growth-and-metal-accumulation-upon-selective-inoculation-treatments-a-comparison-of-gram-negative-and-gram-positive-rhizobacteria
#20
Karina I Paredes-Páliz, Enrique Mateos-Naranjo, Bouchra Doukkali, Miguel A Caviedes, Susana Redondo-Gómez, Ignacio D Rodríguez-Llorente, Eloísa Pajuelo
Metal contamination of estuaries is a severe environmental problem, for which phytoremediation is gaining momentum. In particular, the associations between halophytes-autochthonous rhizobacteria have proven useful for metal phytostabilization in salt marshes. In this work, three bacterial strains (gram-negative and gram-positive) were used for Spartina densiflora inoculation. All three bacteria, particularly Pantoea strains, promoted plant growth and mitigated metal stress on polluted sediments, as revealed from functionality of the photosynthetic apparatus (PSII) and maintenance of nutrient balance...
August 8, 2017: Marine Pollution Bulletin
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