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Marine Pollution Bulletin

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https://www.readbyqxmd.com/read/28330693/evaluation-of-sediment-contamination-by-monoaromatic-hydrocarbons-in-the-coastal-lagoons-of-gulf-of-saros-ne-aegean-sea
#1
Selma Ünlü, Bedri Alpar
The concentrations and distribution of monoaromatic hydrocarbons (benzene, toluene, ethyl benzene and the sum of m-, p- and o-, xylenes) were determined in the sediments of coastal lagoons of the Gulf of Saros, using a static headspace GC-MS. The total concentrations of BTEX compounds ranged from 368.5 to below detection limit 0.6μgkg(-1) dw, with a mean value of 61.5μgkg(-1) dw. The light aromatic fraction of m-, p-xylene was the most abundant compound (57.1% in average), and followed by toluene (38.1%)>ethylbenzene (4...
March 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28325611/sediment-bound-trace-metals-in-golfe-juan-bay-northwestern-mediterranean-distribution-availability-and-toxicity
#2
Ma Gregoria Joanne Tiquio, Charlotte Hurel, Nicolas Marmier, Mehwish Taneez, Bruno Andral, Norbert Jordan, Patrice Francour
The concentration, potential mobility, cation exchange capacity and toxicity of eight sediment-bound metals in Golfe-Juan Bay, France were examined. Results revealed significant spatial gradient of metal contamination along Golfe-Juan coast. The distribution and concentration of the metals appear to be influenced by the geochemical properties of the sediment, proximity to anthropogenic sources and general water circulation in the bay. The portion of trace metals found in the exchangeable, carbonate, oxidizable and reducible fractions of the sediment constitute 31%-58% of the total sediment-bound trace metal content, suggesting significant potential for remobilization of metals into the water column...
March 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28325610/depositional-history-and-inventories-of-polychlorinated-biphenyls-pcbs-in-sediment-cores-from-an-antarctic-specially-managed-area-admiralty-bay-king-george-island
#3
Tatiane Combi, César C Martins, Satie Taniguchi, Juliana Leonel, Rafael André Lourenço, Rosalinda Carmela Montone
Temporal patterns, fluxes and inventories of polychlorinated biphenyls (PCBs) were assessed in nine sediment cores collected from selected areas of Admiralty Bay off the Antarctic Peninsula. Concentrations of total PCBs were low, but slightly higher in comparison to low-impacted, remote environments in the world, ranging from below the detection limit to 11.9ngg(-1) in dry weight. PCB concentrations and inventories suggest a possible minor influence related to the nearby logistic activities, especially in the sediment core collected close to the Ferraz Station...
March 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28325609/cryptosporidium-species-from-common-edible-bivalves-in-manila-bay-philippines
#4
Edison Jay A Pagoso, Windell L Rivera
Manila Bay is one of the major propagation sites of edible bivalves in the Philippines. Studies have shown that bivalves might be contaminated with human pathogens like the protozoan parasite Cryptosporidium, one of the major causes of gastroenteritis in the world. In this study, Cryptosporidium from four species of edible bivalves were isolated using a combination of sucrose flotation and immunomagnetic separation. Using direct fluorescent antibody test, Cryptosporidium oocysts were found in 67 out of 144 samples collected...
March 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28325608/particulate-waste-outflow-from-fish-farming-cages-how-much-is-uneaten-feed
#5
M Ballester-Moltó, P Sanchez-Jerez, J Cerezo-Valverde, F Aguado-Giménez
Particulate wastes drive benthic organic enrichment from cage fish farming. Differentiation between faeces and uneaten feed estimates at cage level are of great value to both economize the feeding process and reduce waste. This study estimates the particulate waste outflowing cages at different depths and orientations, and the wasted feed component by combining in situ measurements and modelling. Particulate matter flux (PMF) was greater vertically through the cage bottoms (60.89%), but lateral outflow was also substantial (39...
March 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28320509/response-of-the-pearl-oyster-pinctada-margaritifera-to-cadmium-and-chromium-identification-of-molecular-biomarkers
#6
Gueguen Yannick, Saulnier Denis, Santini Adrien, Magre Kevin, Garen Pierre, Bernagout Solène, Nohl Marine, Bouisset Patrick, Helme Herehia, Planes Serge, Le Moullac Gilles
This study was designed to identify in the pearl oyster Pinctada margaritifera, used as a bio-accumulator, molecular biomarkers for the presence of heavy metals in the lagoon environment. Pearl oysters were exposed to 2 concentrations (1 and 10μgL(-1)) of cadmium (Cd) and chromium (Cr) compared to a control. Twelve target genes encoding proteins potentially involved in the response to heavy metal contamination with antioxidant, detoxification or apoptosis activities were selected. P. margaritifera accumulated Cd but not Cr, and mortality was related to the amount of Cd accumulated in tissues...
March 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28318563/characterization-of-enterococcus-species-isolated-from-marine-recreational-waters-by-maldi-tof-ms-and-rapid-id-api%C3%A2-20-strep-system
#7
Ana Paula Guarnieri Christ, Solange Rodrigues Ramos, Rodrigo Cayô, Ana Cristina Gales, Elayse Maria Hachich, Maria Inês Zanoli Sato
MALDI-TOF Mass Spectrometry Biotyping has proven to be a reliable method for identifying bacteria at the species level based on the analysis of the ribosomal proteins mass fingerprint. We evaluate the usefulness of this method to identify Enterococcus species isolated from marine recreational water at Brazilian beaches. A total of 127 Enterococcus spp. isolates were identified to species level by bioMérieux's API® 20 Strep and MALDI-TOF systems. The biochemical test identified 117/127 isolates (92%), whereas MALDI identified 100% of the isolates, with an agreement of 63% between the methods...
March 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28318561/litter-assessment-on-99-cuban-beaches-a-baseline-to-identify-sources-of-pollution-and-impacts-for-tourism-and-recreation
#8
C M Botero, G Anfuso, C Milanes, A Cabrera, G Casas, E Pranzini, A T Williams
Litter presence was assessed on the entire Cuban coastline, and includes 99 beaches from all Cuban regions, during field work carried out in 2012 and 2015. A standard method verified in several countries was applied, which classified beaches for nine types of litter into four grades (A-excellent to D-poor). Almost half of the Cuban beaches obtained excellent cleanliness scores, although many needed to be better managed. In this baseline, the most common types of residue were general litter (8% grade D and 35% grades B/C) and potentially harmful litter (<68% with grade A)...
March 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28318562/mercury-in-suspended-matter-of-the-gulf-of-gda%C3%A5-sk-origin-distribution-and-transport-at-the-land-sea-interface
#9
Agnieszka Jędruch, Urszula Kwasigroch, Magdalena Bełdowska, Karol Kuliński
The coastal regions of inland seas are particularly vulnerable to Hg pollution. An important carrier of toxic Hg in the marine environment is suspended matter originating from multiple sources. The present study was conducted in the Gulf of Gdańsk and its adjoining land in the years 2011-2013. The results indicated that the HgSPM (Hg bound with suspended particulate matter) concentrations varied horizontally and vertically and were dependent on the water dynamics and the composition of organic matter. Conditions favourable for the accumulation of matter and adsorption of reactive gaseous mercury led to increasing HgSPM levels, which are especially hazardous in the case of semi-enclosed areas such as estuaries...
March 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28318559/screening-level-risk-assessment-applied-to-dredging-of-polluted-sediments-from-guanabara-bay-rio-de-janeiro-brazil
#10
Ana Elisa F Silveira, Juliana R Nascimento, Elisamara Sabadini-Santos, Edison D Bidone
Guanabara Bay is characterized by predominant eutrophication and anoxic sediments with a mixture of pollutants. The risk prognosis associated with the dumping of its dredged sediments into the open ocean was addressed by our algorithm. Our algorithm could prioritize areas, characterize major processes related to dredging, measure the potential risk of sediments, and predict the effects of sediment mixing. The estimated risk of dredged sediment was >10-fold than that of ocean sediments. Among metals, mercury represented 50-90% of the total risk...
March 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28318560/revisiting-the-basis-for-us-ballast-water-regulations
#11
Andrew N Cohen, Fred C Dobbs, Peter M Chapman
The transport and release of invasive organisms in ballast water has harmed ecosystems, economic activities and human health. Current US ballast water regulations intended to minimize the discharge of such organisms are based on results reported by a scientific advisory committee in 2011. Using the same methods, we re-analyzed the data evaluated by the committee as well as new data. We find that the committee's analysis was flawed, and that some treatment systems can meet limits that are 10 times (for zooplankton) or 1000 times (for phytoplankton) more stringent than the committee reported...
March 15, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28314615/distinguishing-globally-driven-changes-from-regional-and-local-scale-impacts-the-case-for-long-term-and-broad-scale-studies-of-recovery-from-pollution
#12
S J Hawkins, A J Evans, N Mieszkowska, L C Adams, S Bray, M T Burrows, L B Firth, M J Genner, K M Y Leung, P J Moore, K Pack, H Schuster, D W Sims, M Whittington, E C Southward
Marine ecosystems are subject to anthropogenic change at global, regional and local scales. Global drivers interact with regional- and local-scale impacts of both a chronic and acute nature. Natural fluctuations and those driven by climate change need to be understood to diagnose local- and regional-scale impacts, and to inform assessments of recovery. Three case studies are used to illustrate the need for long-term studies: (i) separation of the influence of fishing pressure from climate change on bottom fish in the English Channel; (ii) recovery of rocky shore assemblages from the Torrey Canyon oil spill in the southwest of England; (iii) interaction of climate change and chronic Tributyltin pollution affecting recovery of rocky shore populations following the Torrey Canyon oil spill...
March 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28302359/footprint-weathering-and-persistence-of-synthetic-base-drilling-mud-olefins-in-deep-sea-sediments-following-the-deepwater-horizon-disaster
#13
Scott A Stout, James R Payne
Olefin-based synthetic-based drilling mud (SBM) was released into the Gulf of Mexico as a result of the Deepwater Horizon (DWH) disaster in 2010. We studied the composition of neat SBM and, using conventional GC-FID, the extent, concentration, and chemical character of SBM-derived olefins in >3600 seafloor sediments collected in 2010/2011 and 2014. SBM-derived (C14-C20) olefins occurred (up to 10cm deep) within a 6.5km(2) "footprint" around the well. The olefin concentration in most sediments decreased an order of magnitude between 2010/2011 and 2014, at least in part due to biodegradation, evidenced by the preferential loss C16 and C18 linear (α- and internal) versus branched olefins...
March 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28302358/elevated-ammonium-reduces-the-negative-effect-of-heat-stress-on-the-stony-coral-pocillopora-damicornis
#14
Zhi Zhou, Guoqing Zhang, Guangmei Chen, Xingzhen Ni, Liping Guo, Xiaopeng Yu, Chunlin Xiao, Yanlai Xu, Xiaowei Shi, Bo Huang
Climate change and environmental pollution have been threatening the survival of corals. In the present study, whole transcriptomes of the coral Pocillopora damicornis were sequenced under high temperature and elevated ammonium. After reads mapping and abundance estimation, differentially expressed genes were obtained in the Control/Heat, Control/Heat_NH4 and Heat/Heat_NH4 comparisons. Five overrepresented GO terms centering the tumor necrosis factor signaling pathway were noted for significantly upregulated genes in the Control/Heat and Control/Heat_NH4 comparisons...
March 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28302357/micro-and-mesoplastics-in-northeast-levantine-coast-of-turkey-the-preliminary-results-from-surface-samples
#15
Sedat Gündoğdu, Cem Çevik
The determination of the microplastic distribution will be beneficial as a measure of the potential effects on the environment. The Mediterranean Sea had a high risk of pollution as it was enclosed by highly populated and industrialized countries. Here, we determined the level of micro- and mesoplastic pollution in Iskenderun and Mersin Bays, located in the Northeastern Levantine coast of Turkey. The average level of both micro- and mesoplastic was determined to be 0.376 item/m(2) at seven stations. The highest level was determined in Mersin Bay at the mouth of the Seyhan river (Station no...
March 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28298248/what-are-the-factors-driving-long-term-changes-of-the-suprabenthos-in-the-seine-estuary
#16
Jean-Philippe Pezy, Alexandrine Baffreau, Jean-Claude Dauvin
A Before/During/After Control-Impact approach is used to assess the effects of Port 2000 on the suprabenthos in the North Channel (NC) of the Seine estuary during the period from September 2001 to October 2015. Since the beginning of Port 2000 construction (2002-2005), the NC is affected by an increase of salinity (marine influence) and input of sand. The suprabenthos changes are mainly characterised by an increase in species richness in the upper part of the NC and a decrease in species density and biomass of the dominant mysid species over time...
March 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28292528/halogenated-organic-pollutants-in-marine-biota-from-the-xuande-atoll-south-china-sea-levels-biomagnification-and-dietary-exposure
#17
Yu-Xin Sun, Yong-Xia Hu, Zai-Wang Zhang, Xiang-Rong Xu, Heng-Xiang Li, Lin-Zi Zuo, Yi Zhong, Hong Sun, Bi-Xian Mai
Six marine biota species were collected from the Xuande Atoll, South China Sea to investigate the bioaccumulation of dichlorodiphenyltrichloroethane (DDT), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE) and dechlorane plus (DP). Pike conger (Muraenesox talabonoides) had the highest concentrations of halogenated organic pollutants (HOPs) among the six marine biota species. DDTs were the predominant HOPs, followed by PCBs and PBDEs, with minor contributions of DBDPE and DP...
March 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28291544/comparison-of-phytoremediation-potential-capacity-of-spartina-densiflora-and-sarcocornia-perennis-for-metal-polluted-soils
#18
Yanina L Idaszkin, Julio L Lancelotti, María P Pollicelli, Jorge E Marcovecchio, Pablo J Bouza
Phytoremediation is considered the most appropriate technique to restore metal polluted soil, given its low cost, high efficiency and low environmental impact. Spartina densiflora and Sarcocornia perennis are perennial halophytes growing under similar environmental conditions in San Antonio marsh (Patagonia Argentina), therefore it is interesting to compare their phytoremediation potential capacity. To this end, we compared concentrations of Pb, Zn, Cu, and Fe in soils and in below- and above-ground structures of S...
March 10, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28285703/biofilm-processes-in-treating-mariculture-wastewater-may-be-a-reservoir-of-antibiotic-resistance-genes
#19
Shuai Li, Shenghua Zhang, Chengsong Ye, Wenfang Lin, Menglu Zhang, Lihua Chen, Jinmei Li, Xin Yu
Antibiotics are heavily used in Chinese mariculture, but only a small portion of the added antibiotics are absorbed by living creatures. Biofilm processes are universally used in mariculture wastewater treatment. In this study, removal of antibiotics (norfloxacin, rifampicin, and oxytetracycline) from wastewater by moving bed biofilm reactors (MBBRs) and the influence of antibiotics on reactor biofilm were investigated. The results demonstrated that there was no significant effect of sub-μg/L-sub-mg/L concentrations of antibiotics on TOC removal...
March 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28284585/marine-environment-status-assessment-based-on-macrophytobenthic-plants-as-bio-indicators-of-heavy-metals-pollution
#20
Tamara Zalewska, Beata Danowska
The main aim of study was to develop the environmental quality standards (EQSMP) for selected heavy metals: Pb, Cd, Hg and Ni bioaccumulated in the tissues of marine macrophytobenthic plants: Chara baltica, Cladophora spp., Coccotylus truncatus, Furcellaria lumbricalis, Polysiphonia fucoides, Stuckenia pectinata and Zanichellia palustris, collected in designated areas of the southern Baltic Sea in period 2008-2015. The calculated concentration ratios (CR), which attained very high values: 10(4)Lkg(-1) for lead, 10(3)Lkg(-1) for nickel and mercury and even 10(5)Lkg(-1) for cadmium formed the basis for the determination of EQSMP values...
March 8, 2017: Marine Pollution Bulletin
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