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Marine Pollution Bulletin | Page 2

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https://read.qxmd.com/read/31179996/on-relaxation-of-the-influences-of-treated-sewage-effluent-on-an-adjacent-seaweed-farm-in-a-tidal-strait
#21
Xu Zhang, Yusuke Uchiyama, Akihiko Nakayama
An Eulerian passive tracer model coupled with a quadruple-nested 3D circulation model was used to assess the coastal dispersal of treated wastewater effluent from a sewage treatment plant and the associated impacts on an adjacent seaweed farm using three different operational scenarios. When the discharged volume and source effluent fluxes were decreased by ~16.7%, the accumulated effluent in the farm was reduced by ~25.4%. A tracer flux budget analysis revealed the apparent predominance of the transient component that accounts for the nonlinear interactions primarily from tidal currents and eddies...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179995/use-of-standard-test-organisms-for-sound-validation-of-uv-based-ballast-water-treatment-systems
#22
Kim Lundgreen, Henrik Holbech, Knud Ladegaard Pedersen, Gitte Ingelise Petersen, Rune Røjgaard Andreasen, Christaline George, Guillaume Drillet, Martin Andersen
To challenge ballast water treatment system (BWTS) efficacy for organisms in the size-class 10-50 μm, intake concentration during tests must reach certain minimum requirements. Often, natural concentrations are too low to meet intake requirements and standard test organisms (STOs) are added. We tested the robustness of Tetraselmis suecica and Odontella sp. to a range of UV-treatments to explore fluences needed to meet the IMO discharge standard (<10 org. ml-1 ) evaluated using two viability assessment methods...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179994/occurrence-and-bioaccumulation-of-persistent-toxic-substances-in-sediments-and-biota-from-intertidal-zone-of-abu-ali-island-arabian-gulf
#23
Seo Joon Yoon, Seongjin Hong, Taewoo Kim, Junghyun Lee, Bong-Oh Kwon, Ahmed A Allam, Abdulaziz A Al-Khedhairy, Jong Seong Khim
North Abu Ali Island is contaminated by crude oil from exogenous sources with a variety of persistent toxic substances (PTSs) being input into intertidal sediments. We detected an array of PTSs in sediments and benthic biota off north Abu Ali Island (Arabian Gulf), including 35 polycyclic aromatic hydrocarbons (PAHs), 6 alkylphenols (APEOs), 10 styrene oligomers (SOs), and tributyltin. The PTS concentrations were generally greater than those reported in other areas of Arabian Gulf. PAHs mainly originated from petrogenic sources, and APEOs and SOs seem to be of recent origin...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179993/input-of-plastic-debris-in-an-urban-tropical-river-system
#24
Anne Bauer-Civiello, Kay Critchell, Mia Hoogenboom, Mark Hamann
Land-based sources contribute approximately 80% of anthropogenic debris in marine environments. A main pathway is believed to be rivers and storm-water systems, yet this input is rarely quantified. We aimed to quantify the abundance of land-based debris entering a river system through storm drains in an urban area of tropical Australia. To account for seasonal variability, debris was quantified pre, post and during the wet season from 2014 to 2017. Plastic items within the river were compared to those in adjacent parks to assess similarities in debris composition...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179992/ingestion-of-microplastics-by-fish-and-other-prey-organisms-of-cetaceans-exemplified-for-two-large-baleen-whale-species
#25
P Burkhardt-Holm, A N'Guyen
Knowledge on microplastic (MP) ingestion by cetaceans is difficult to obtain. We infer the potential for MP uptake by cetaceans from the occurrence of MP in prey species. First, we reviewed information on whale prey species, focussing on common minke (Balaenoptera acutorostrata) and sei whale (B. borealis), for which the most comprehensive quantitative datasets exist. Second, evidence of MP ingestion by their prey species was reviewed. We found common minke whales forage opportunistically on fish from various families: Ammodytidae, Clupeidae, Gadidae, Engraulidae and Osmeridae...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179991/using-lead-isotopes-and-potentially-toxic-elements-to-trace-pollutant-sources-in-the-northern-region-of-guanabara-bay-southeastern-brazil
#26
Guilherme Loriato Potratz, Mauro Cesar Geraldes, Sávio Bizzi, Leandro Nogueira, Maria Virginia Alves Martins
Guanabara Bay (southeastern Brazil) is located in the metropolitan region of the Rio de Janeiro State and is being affected by high levels of anthropization. This work analyzes not only the concentrations of potentially toxic elements (PTEs), but also Pb stable isotopes to trace possible anthropogenic and natural sources of pollutants in the northern region of Guanabara Bay and the Suruí and Magé rivers. The Governador Island Channel, the regions to the north of Governador Island, north and west of Paquetá Island, and the Magé coast are most affected by PTEs...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179990/acoustic-characterization-of-sensors-used-for-marine-environmental-monitoring
#27
Emma Cotter, Paul Murphy, Christopher Bassett, Benjamin Williamson, Brian Polagye
Active acoustic sensors are widely used in oceanographic and environmental studies. Although many have nominal operating frequencies above the range of marine mammal hearing, they can produce out-of-band sound that may be audible to marine mammals. Acoustic emissions from four active acoustic transducers were characterized and compared to marine mammal hearing thresholds. All four transducers had nominal operating frequencies above the reported upper limit of marine mammal hearing, but produced measurable sound below 160 kHz...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179989/a-feedback-controlling-digital-microfluidic-fluorimetric-sensor-device-for-simple-and-rapid-detection-of-mercury-ii-in-costal-seawater
#28
Qian Zhang, Xingcai Zhang, Xiaolin Zhang, Lan Jiang, Jingmei Yin, Peng Zhang, Shuang Han, Yunhua Wang, Guoxia Zheng
By combination of miniaturization potential of digital microfluidics (DMF) and sensitivity of fluorescence probe, an integrated sensor device has been initially constructed for mercury detection in coastal waters. The actuation feature of the detecting target, seawater droplet, which remains unclear, was basically explored. To overcome a potential risk of driven failure, induced by diversity ion ingredients in seawater, a feedback control loop was included into control system. Analyzing method for coastal waters was well established on DMF, which showed satisfied stability and selectivity in Hg sensing under high salinity condition, with the sensitivity of Hg2+ at the parts per billion level and total testing time less than 20s...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179988/differences-in-symbiodiniaceae-communities-and-photosynthesis-following-thermal-bleaching-of-massive-corals-in-the-northern-part-of-the-south-china-sea
#29
Sanqiang Gong, Lijia Xu, Kefu Yu, Fengli Zhang, Zhiyong Li
Although many achievements have been made in studies on the relationship between Symbiodiniaceae and coral bleaching, there is little information on the responses of Symbiodiniaceae to coral thermal bleaching in the South China Sea (SCS). In this study, Symbiodiniaceae communities and the effective quantum yield (ФPSII ) of healthy and bleached massive corals from the SCS were compared. The results indicated that the Symbiodiniaceae communities and ФPSII values showed coral bleaching-dependent variations...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179987/sediment-associated-with-algal-turfs-inhibits-the-settlement-of-two-endangered-coral-species
#30
Kelly E Speare, Alain Duran, Margaret W Miller, Deron E Burkepile
Populations of Acropora palmata and Orbicella faveolata, two important reef-building corals, have declined precipitously across the Caribbean region since at least the 1970s. Recruitment failure may be limiting population recovery, possibly due to lack of suitable settlement habitat. Here, we examine the effects of algal turfs and algal turfs + sediment, two widely abundant substrate types across the Florida Keys, on the settlement of these two ecologically-important species. We show that sediment significantly impedes coral settlement, reducing settlement 10- and 13-fold for A...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179986/tissue-distribution-of-organic-contaminants-in-stranded-pregnant-sperm-whale-physeter-microcephalus-from-the-huizhou-coast-of-the-south-china-sea
#31
Fengping Zhan, Xinjian Yu, Xiyang Zhang, Laiguo Chen, Xian Sun, Ri-Qing Yu, Yuping Wu
Twelve persistent organic pollutants (POPs) were measured in 11 tissue samples from a pregnant sperm whale stranded on the Huizhou coast of the South China Sea, China, in March 2017. POPs were found to be more concentrated in the irrigated tissues such as placenta, ovary, mammary gland, and liver than the less irrigated tissues such as epidermis. High POP levels detected in the placenta might result in abnormal hormone secretion in the placenta, which would affect the unborn offspring. We hypothesized that ovary is potentially vulnerable to the exposure of higher contaminant levels...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179985/the-different-responses-of-growth-and-photosynthesis-to-nh-4-enrichments-between-gracilariopsis-lemaneiformis-and-its-epiphytic-alga-ulva-lactuca-grown-at-elevated-atmospheric-co-2
#32
Zhiwei Ji, Dinghui Zou, Jingyu Gong, Chunxiang Liu, Changpeng Ye, Yuning Chen
We investigated how elevated CO2 affects the responses of Gracilariopsis lemaneiformis and Ulva lactuca to NH4 + enrichments. All algae were incubated under four nutritional conditions (zero addition, 100, 500, and 2500 μM NH4 + ), and two CO2 levels (390 ppm and 1000 ppm). The growth, photosynthesis, and soluble protein contents of both species increased under the eutrophication condition (100 μM NH4 + ). However, the growth and carotenoid contents of the two species declined when NH4 + concentration increased...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179984/contamination-and-ecological-risk-assessment-of-heavy-metals-pollution-from-the-shalateen-coastal-sediments-red-sea-egypt
#33
Hamdy E Nour, Abdelbaset S El-Sorogy, Mohamed Abd El-Wahab, El Said Nouh, Mahmoud Mohamaden, Khaled Al-Kahtany
To assess the contamination and ecological risk assessment of the Shalateen coastal sediments, Red Sea, Egypt, 35 samples were collected to analyze Cu, Sr, Zn, Cd, Pb, Fe, Co, Ni, Mn, and total organic matter with an atomic absorption spectrophotometer. Several indices were calculated to estimate the contamination levels. The results indicated the following order of metal concentrations: Fe > Sr > Mn > Zn > Ni > Pb > Cu > Co > Cd, and revealed that the investigated sediments are highly enriched and contaminated with Sr, Cd, Pb and Zn...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179983/helicopter-borne-nmr-for-detection-of-oil-under-sea-ice
#34
S A Altobelli, Mark S Conradi, E Fukushima, J Hodgson, T J Nedwed, D A Palandro, A Peach, N J Sowko, H Thomann
Mobile nuclear magnetic resonance (NMR) operating in Earth's magnetic field is adapted to detect leaked or spilled oil trapped in or under sea ice without the need to place any personnel on the ice. A helicopter placed a 6-meter diameter NMR coil system weighing approximately 1000 kg on 92 cm-thick ice surrogate and detected the equivalent of 1 cm thick oil under the ice surrogate in 3-1/2 min.
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179982/carbon-and-nitrogen-stable-isotope-signatures-linked-to-anthropogenic-toxic-substances-pollution-in-a-highly-industrialized-area-of-south-korea
#35
Seongjin Hong, Yeonjung Lee, Seo Joon Yoon, Junghyun Lee, Sujin Kang, Eun-Ji Won, Jin Hur, Jong Seong Khim, Kyung-Hoon Shin
Sources of organic matter in a polluted coastal embayment (Lake Sihwa) indicated that δ13 C and δ15 N of suspended particulate matter (SPM) and sediments could be distinguished by land-use type and surrounding activities. Specifically, low δ15 N occurred in inland creeks near industrial complex, where severe contamination by persistent toxic substances (PTSs) is evidenced. To identify the sources of 15 N-depleted organic matter and PTSs, the SPM and/or sediments were collected along ~8 km of the Singil Creek and in stormwater drainage pipes that carried pollutants to the creeks from upland areas...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179981/can-the-input-of-biocides-and-polymeric-substances-from-antifouling-paints-into-the-sea-be-reduced-by-the-use-of-non-toxic-hard-coatings
#36
B Watermann, B Eklund
Antifouling coatings are used to protect boat hulls from fouling organisms. The paints are designed to release biocides and by this prevent fouling organisms to attach. Until now the simultaneous release of the bulk plastic material has been over-looked. In this study the amount of antifouling paints on ships and leisure boats in Scandinavian countries and Germany has been compared and a calculation of the release of micro plastics has been performed. The result shows that use of a biocide-free hard coating will completely reduce outlet of biocides and the input of polymers will dramatically be reduced from at the most 5% in comparison to traditional paints where the release rate of plastics is estimated to be 70-85%...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179980/phthalates-and-organophosphorus-insecticide-residues-in-shrimp-determined-by-liquid-gas-chromatography-tandem-mass-spectrometry-and-a-health-risk-assessment
#37
Hong-You Chang, Wei-Cheng Yang, Yi-Jing Xue, Ming-Yang Tsai, Jiann-Hsiung Wang, Geng-Ruei Chang
Shrimps are the most widely and increasingly cultured crustaceans in land-based ponds in Taiwan. However, few studies have investigated the phthalate contamination of and insecticide residues in shrimp. In this study, we applied a validated method to analyze the phthalate and 18 insecticides residues in shrimp. A total of 46 samples of whiteleg, grass, or giant river shrimp were collected from aquafarms and production areas in Taiwan. We detected 0.02-0.70 mg/kg of di-2-ethylhexyl phthalate (DEHP) in three shrimps; 0...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179979/debris-ingestion-by-carnivorous-consumers-does-the-position-in-the-water-column-truly-matter
#38
Ana Paula Madeira Di Beneditto, Ariane da Silva Oliveira
The hypothesis that carnivorous consumers associated with the seabed are more likely to ingest marine debris was tested based on stomach content analysis of fish (Trichiurus lepturus and species of Ariidae) and cetaceans (Sotalia guianensis and Pontoporia blainvillei). Among 596 stomach contents, only 22 (3.7%) contained debris. The debris was flexible plastic, nylon yard, paper, latex, styrofoam and cigarette filter. The proportion of stomach contents with debris varied among species: P. blainvillei (pelagic demersal consumer) presented the highest frequency of ingestion (15...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179978/sorption-of-tonalide-musk-xylene-galaxolide-and-musk-ketone-by-microplastics-of-polyethylene-and-polyvinyl-chloride
#39
Xiaofeng Dong, Minggang Zheng, Lingyun Qu, Lei Shi, Ling Wang, Yu Zhang, Xiaowen Liu, Ying Qiu, Huihui Zhu
The effects of time, temperature, and salinity on the adsorption of Tonalide (AHTN), Musk Xylene (MX), Galaxolide (HHCB), and Musk Ketone (MK) by microplastics of polyethylene (PE) and polyvinyl chloride (PVC) are studied. Results indicate that the equilibrium sorption time was about 10 h and the adsorption kinetics model conformed to the first-order adsorption kinetic model and pseudo-second order kinetic model, this indicates that the main adsorption mechanism might be chemical adsorption and physical absorption...
July 2019: Marine Pollution Bulletin
https://read.qxmd.com/read/31179977/assessing-the-risk-of-marine-litter-accumulation-in-estuarine-habitats
#40
Inés Mazarrasa, Araceli Puente, Paula Núñez, Andrés García, Ana J Abascal, José A Juanes
Rivers and estuaries are among the main entrances of litter to the marine environment. This study characterizes marine litter deposits in three estuaries of the Gulf of Biscay, assesses its potential impact in estuarine habitats based on expert elucidation, and develops a methodology to estimate the associated environmental risk. Litter was ubiquitous in the estuaries of study, mostly represented by plastic debris and sanitary waste. High marsh communities acted as litter traps, showing significantly higher litter densities than adjacent habitats...
July 2019: Marine Pollution Bulletin
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