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Marine Pollution Bulletin

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https://www.readbyqxmd.com/read/28233527/characterization-of-emissions-and-residues-from-simulations-of-the-deepwater-horizon-surface-oil-burns
#1
Brian K Gullett, Johanna Aurell, Amara Holder, William Mitchell, Dale Greenwell, Michael Hays, Robyn Conmy, Dennis Tabor, William Preston, Ingrid George, Joseph P Abrahamson, Randy Vander Wal, Edith Holder
The surface oil burns conducted by the U.S. Coast Guard from April to July 2010 during the Deepwater Horizon disaster in the Gulf of Mexico were simulated by small scale burns to characterize the pollutants, determine emission factors, and gather particulate matter for subsequent toxicity testing. A representative crude oil was burned in ocean-salinity seawater, and emissions were collected from the plume by means of a crane-suspended sampling platform. Emissions included particulate matter, aromatic hydrocarbons, polychlorinated dibenzodioxins/dibenzofurans, elements, and others, the sum of which accounted for over 92% by mass of the combustion products...
February 20, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28233526/before-after-analysis-of-the-trophic-network-of-an-experimental-dumping-site-in-the-eastern-part-of-the-bay-of-seine-english-channel
#2
Jean-Philippe Pezy, Aurore Raoux, Stella Marmin, Pierre Balay, Nathalie Niquil, Jean-Claude Dauvin
An experimental study was conducted to assess the physical and biological impacts of muddy fine sand dredged material dumped on a medium sand site Machu offshore the Seine Estuary. Complementary trophic web modelling tools were applied to the Machu ecosystem to analyse the effects of dumping operations. Results show that, after the dumping operations, the biomass of fish increased while invertebrate biomass remained relatively stable through time. Nevertheless, the biomasses of benthic invertebrates, omnivores/scavengers and predators showed some increases, while non-selective deposit feeders and filter feeders decreased...
February 20, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28228240/modeling-spreading-of-oil-slicks-based-on-random-walk-methods-and-voronoi-diagrams
#3
İsmail Durgut, Mark Reed
We introduce a methodology for representation of a surface oil slick using a Voronoi diagram updated at each time step. The Voronoi cells scale the Gaussian random walk procedure representing the spreading process by individual particle stepping. The step length of stochastically moving particles is based on a theoretical model of the spreading process, establishing a relationship between the step length of diffusive spreading and the thickness of the slick at the particle locations. The Voronoi tessellation provides the areal extent of the slick particles and in turn the thicknesses of the slick and the diffusive-type spreading length for all particles...
February 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28222865/simulated-oil-release-from-oil-contaminated-marine-sediment-in-the-bohai-sea-china
#4
Lingling Yuan, Longxi Han, Wenjie Bo, Hua Chen, Wenshen Gao, Bo Chen
There is a high degree of heavy oil partitioning into marine sediments when an oil spill occurs. Contaminated sediment, as an endogenous pollution source, can re-pollute overlying water slowly. In this study, a static oil release process and its effects in marine sediment was investigated through a series of experiments with reproductive heavy oil-contaminated marine sediment. The oil release process was accurately simulated with a Lagergren first-order equation and reached equilibration after 48h. The fitted curve for equilibrium concentration (C0) and first-order rate constant (k1) for sediment pollution levels exhibited a first-order log relationship...
February 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28222864/effects-of-micro-and-nanoplastics-on-aquatic-ecosystems-current-research-trends-and-perspectives
#5
Yooeun Chae, Youn-Joo An
Contamination by bulk plastics and plastic debris is currently the one of the most serious environmental problems in aquatic ecosystems. In particular, small-scale plastic debris such as microplastics and nanoplastics has become leading contributors to the pollution of marine and freshwater ecosystems. Studies are investigating the impacts of micro-and nanoplastics on aquatic organisms and ecosystems worldwide. This review covers 83 studies that investigated the distribution of microplastics and the ecotoxicity of micro- and nanoplastics in marine and freshwater ecosystems...
February 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28222863/tributyltin-exposure-increases-mortality-of-nodavirus-infected-japanese-medaka-oryzias-latipes-larvae
#6
Shin-Ichi Kitamura, Masaki Akizuki, Jun-Young Song, Kei Nakayama
We investigated the effect of combined exposure to nodavirus infection and TBT on medaka (Oryzias latipes). Medaka larvae were infected by immersion in medium containing nodavirus at titers of 10(2.5), 10(3.5), or 10(4.5) TCID50/mL. Infected fish then were exposed to TBT at 0, 0.17, 0.52, 1.6, or 4.7μg/L. Of the 12 groups exposed to both stressors, the mortalities of 6 (10(2.5) TCID50/mL+0.52, 1.6, or 4.7μg/L, 10(3.5) TCID50/mL+4.7μg/L and 10(4.5) TCID50/mL+1.6 or 4.7μg/L) were significantly higher than that of each TBT control...
February 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28222862/commercially-important-species-associated-with-horse-mussel-modiolus-modiolus-biogenic-reefs-a-priority-habitat-for-nature-conservation-and-fisheries-benefits
#7
Flora E A Kent, James M Mair, Jason Newton, Charles Lindenbaum, Joanne S Porter, William G Sanderson
Horse mussel reefs (Modiolus modiolus) are biodiversity hotspots afforded protection by Marine Protected Areas (MPAs) in the NE Atlantic. In this study, horse mussel reefs, cobble habitats and sandy habitats were assessed using underwater visual census and drop-down video techniques in three UK regions. Megafauna were enumerated, differences in community composition and individual species abundances were analysed. Samples of conspicuous megafauna were also collected from horse mussel reefs in Orkney for stable isotope analysis...
February 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28222861/flow-cytometry-detection-of-planktonic-cells-with-polycyclic-aromatic-hydrocarbons-sorbed-to-cell-surfaces
#8
Maria I Cerezo, Matthew Linden, Susana Agustí
Polycyclic aromatic hydrocarbons are very important components of oil pollution. These pollutants tend to sorb to cell surfaces, exerting toxic effects on organisms. Our study developed a flow cytometric method for the detection of PAHs sorbed to phytoplankton by exploiting their spectral characteristics. We discriminated between cells with PAHs from cells free of PAHs. Clear discrimination was observed with flow cytometer provided with 375 or 405nm lasers in addition to the standard 488nm laser necessary to identify phytoplankton...
February 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28215556/toward-a-better-guard-of-coastal-water-safety-microbial-distribution-in-coastal-water-and-their-facile-detection
#9
REVIEW
Yunxuan Xie, Ning Qiu, Guangyi Wang
Prosperous development in marine-based tourism has raised increasing concerns over the sanitary quality of coastal waters with potential microbial contamination. The World Health Organization has set stringent standards over a list of pathogenic microorganisms posing potential threats to people with frequent coastal water exposure and has asked for efficient detection procedures for pathogen facile identification. Inspection of survey events regarding the occurrence of marine pathogens in recreational beaches in recent years has reinforced the need for the development of a rapid identification procedure...
February 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28215555/intertidal-pool-fish-girella-laevifrons-kyphosidae-shown-strong-physiological-homeostasis-but-shy-personality-the-cost-of-living-in-hypercapnic-habitats
#10
S Benítez, C Duarte, T Opitz, N A Lagos, J M Pulgar, C A Vargas, M A Lardies
Tide pools habitats are naturally exposed to a high degree of environmental variability. The consequences of living in these extreme habitats are not well established. In particular, little it is known about of the effects of hypercanic seawater (i.e. high pCO2 levels) on marine vertebrates such as intertidal pool fish. The aim of this study was to evaluate the effects of increased pCO2 on the physiology and behavior in juveniles of the intertidal pool fish Girella laevifrons. Two nominal pCO2 concentrations (400 and 1600μatm) were used...
February 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28215554/diversity-of-bacteria-and-fungi-associated-with-tarballs-recent-developments-and-future-prospects
#11
REVIEW
Varsha Laxman Shinde, V Suneel, Belle Damodara Shenoy
Tarballs are formed by weathering of crude oil in marine environment. They are transported from open ocean to the shores by sea currents and waves. Tarball pollution is a major concern to global marine ecosystem. Microbes such as bacteria and fungi are known to be associated with tarballs. They presumably play an important role in tarball degradation and some are potential human and animal pathogens. This paper highlights the recent studies on tarball-associated bacteria and fungi. Future perspectives on diversity, ecology and possible applications of tarball-associated microbes in bioremediation of beached tarballs have been discussed...
February 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28215613/examining-the-utility-of-coral-ba-ca-as-a-proxy-for-river-discharge-and-hydroclimate-variability-at-coiba-island-gulf-of-chirqu%C3%A3-panam%C3%A3
#12
Logan D Brenner, Braddock K Linsley, Robert B Dunbar
Panamá's extreme hydroclimate seasonality is driven by Intertropical Convergence Zone rainfall and resulting runoff. River discharge (Q) carries terrestrially-derived barium to coastal waters that can be recorded in coral. We present a Ba/Ca record (1996-1917) generated from a Porites coral colony in the Gulf of Chiriquí near Coiba Island (Panamá) to understand regional hydroclimate. Here coral Ba/Ca is correlated to instrumental Q (R=0.67, p<0.001), producing a seasonally-resolved Reduced Major Axis regression of Ba/Ca (μmol/mol)=Q (m(3)/s)×0...
February 15, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28214011/widespread-microplastic-ingestion-by-fish-assemblages-in-tropical-estuaries-subjected-to-anthropogenic-pressures
#13
A L Vendel, F Bessa, V E N Alves, A L A Amorim, J Patrício, A R T Palma
Our aim was to quantify microplastic ingestion by fish assemblages in two tropical Brazilian estuaries and to evaluate whether biological and ecological factors influence the ingestion of microplastics by fish species. Of 2233 fish from both estuaries (from 69 species) examined in this study, 9% of the individuals (24 species) had microplastics in their gut contents. Microplastic ingestion occurred irrespective of fish size and functional group. The diet of fish species was analyzed based on prey items identified in the fish's full stomach contents and five feeding guilds were defined...
February 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28214010/associations-between-metal-exposure-and-lesion-formation-in-offshore-gulf-of-mexico-fishes-collected-after-the-deepwater-horizon-oil-spill
#14
Jennifer E Granneman, David L Jones, Ernst B Peebles
The objectives of this study were to: (1) examine patterns of short- and long-term metal exposure within the otoliths of six offshore fish species in varying states of health, as indicated by the presence of external skin lesions, and (2) determine if there was a change in otolith metal concentrations concurrent with the Deepwater Horizon (DWH) oil spill. Otoliths collected from 2011 to 2013 in the Gulf of Mexico (GOM) were analyzed for a suite of trace metals known to be associated with DWH oil. We found that lesioned fish often had elevated levels of otolith (60)Ni and (64)Zn before, during, and after the DWH oil spill...
February 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28214009/trophic-magnification-of-dechlorane-plus-in-the-marine-food-webs-of-fildes-peninsula-in-antarctica
#15
Guangshui Na, Yao Yao, Hui Gao, Ruijing Li, Linke Ge, Ivan A Titaley, Lisandra Santiago-Delgado, Staci L Massey Simonich
The food web composition, assimilation efficiency of Dechlorane Plus (DP) in food web components, and even extrinsic conditions can affect the trophic biomagnification potentials of DP isomers in food webs. Antarctica ecological system is characterized by the presence of few consumers and simple trophic levels (TLs), which are crucial in discussing the behavior of contaminants. To assess the biomagnification potential of DP in the Antarctic food web, nine representative species were sampled and analyzed from the Fildes Peninsula...
February 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28214008/recovery-of-salt-marsh-vegetation-after-removal-of-storm-deposited-anthropogenic-debris-lessons-from-volunteer-clean-up-efforts-in-long-beach-ny
#16
Kaitlin M Ehl, Steve M Raciti, Jason D Williams
Recovery of vegetation on a Long Island, NY salt marsh was investigated after the removal of hurricane-deposited large wooden debris through managed clean-ups involving volunteers. Two years after the removal of the debris, vegetation cover and species composition were not significantly different from controls. There was no significant difference in vegetation recovery among fall and spring debris removal treatments. Initial vegetation cover of the experimental and control plots was 95.8% and 1.2%, respectively; after two growing seasons cover was 78...
February 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28209363/origin-and-distribution-of-hydrocarbons-and-organic-matter-in-the-surficial-sediments-of-the-sfax-kerkennah-channel-tunisia-southern-mediterranean-sea
#17
Hatem Zaghden, Marc Tedetti, Sami Sayadi, Mohamed Moncef Serbaji, Boubaker Elleuch, Alain Saliot
We investigated the origin and distribution of aliphatic and polycyclic aromatic hydrocarbons (AHs and PAHs) and organic matter (OM) in surficial sediments of the Sfax-Kerkennah channel in the Gulf of Gabès (Tunisia, Southern Mediterranean Sea). TOC, AH and PAH concentrations ranged 2.3-11.7%, 8-174μgg(-1)sed.dw and 175-10,769ngg(-1)sed.dw, respectively. The lowest concentrations were recorded in the channel (medium sand sediment) and the highest ones in the Sfax harbor (very fine sand sediment). AHs, PAHs and TOC were not correlated for most of the stations...
February 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28209362/relative-influence-of-sediment-variables-on-mangrove-community-assembly-in-leizhou-peninsula-china
#18
Jing Liu, Keming Ma, Laiye Qu
Effective conservation of mangroves requires a complete understanding of vegetation structure and identification of the variables most important to their assembly. Using canonical correspondence analysis (CCA) combined with variation partition, we determined the independent and joint effects of sediment variables, including physicochemical characteristics and heavy metals, on mangrove community assemblies in the overstory and understory in Leizhou Peninsula, China. The results indicated that the contributions of sediment physicochemical variables to community assembly were greater than were those of heavy metals, particularly in overstory vegetation...
February 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28209361/a-multivariate-approach-to-analyzing-functional-redundancy-of-marine-periphytic-ciliates-during-the-colonization-process-for-bioassessment-in-coastal-ecosystems
#19
Guangjian Xu, Xiaoxiao Zhong, Alan Warren, Henglong Xu
Functional redundancy is a useful tool for determining functional compensation and for reducing "signal to noise" ratios of full-species datasets in community-based monitoring programs. The functional redundancy of marine periphytic ciliate communities during the colonization process in coastal waters of the Yellow Sea, China, was analyzed using a peeling procedure (BVSTEP). Four response units (RUs) with trophic-functional equivalents were identified from the full 77-species dataset. These RUs, which comprised four, seven, six and six species respectively, represented a clear variation in trophic-functional structures across the levels of functional redundancy...
February 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28202282/trends-in-nitrogen-isotope-ratios-of-juvenile-winter-flounder-reflect-changing-nitrogen-inputs-to-rhode-island-usa-estuarine-systems
#20
Richard J Pruell, Bryan K Taplin, Kenneth M Miller
Nitrogen isotope ratios (δ(15)N) in juvenile winter flounder, Pseudopleuronectes americanus, were used to examine changes in nitrogen inputs to several Rhode Island, USA estuarine systems. Fish were collected over two three-year periods with a ten-year interval between sampling periods (2002-2004 and 2012-2014). During that interval numerous changes to nutrient management practices were initiated in the watersheds of these estuarine systems including the upgrade of several major wastewater treatment facilities that discharge to Narragansett Bay, which significantly reduced nitrogen inputs...
February 12, 2017: Marine Pollution Bulletin
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