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Marine Pollution Bulletin

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https://www.readbyqxmd.com/read/28109656/beyond-negative-perceptions-the-role-of-some-marine-invasive-species-as-trophic-subsidies
#1
LETTER
Pedro A Quijón, Paula Tummon Flynn, Cristian Duarte
No abstract text is available yet for this article.
January 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28109655/the-use-of-rockfish-sebastiscus-marmoratus-as-a-sentinel-species-to-assess-petroleum-hydrocarbons-pollution-a-case-study-in-quanzhou-bay-china
#2
Jun Bo, Ronghui Zheng, Weiming Kuang, Fukun Hong, Qing Xie, Yusheng Zhang
To monitor the biological effects of marine pollution, choosing a native fish species and establishing suitable biomarkers are required. In this study, the full-length cDNA of cyp1a1 was cloned from Sebastiscus marmoratus (SM-CYP1A1). Then the dose-response and time-course induction of hepatic CYP1A1 mRNA by the crude oil water-soluble fraction (WSF) were determined. Subsequently, SM-CYP1A1 mRNA was applied to investigate the biological effect of petroleum hydrocarbon pollution in Quanzhou Bay, China. The transcription levels of hepatic CYP1A1 were significantly elevated in fish caged in the polluted sites for 2weeks compared with those of the reference site, which were correlated with the concentrations of petroleum hydrocarbon and polycyclic aromatic hydrocarbon (PAH) in the surface seawaters...
January 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28109654/spatial-and-temporal-variation-of-macro-meso-and-microplastic-abundance-on-a-remote-coral-island-of-the-maldives-indian-ocean
#3
Hannes K Imhof, Robert Sigl, Emilia Brauer, Sabine Feyl, Philipp Giesemann, Saskia Klink, Kathrin Leupolz, Martin G J Löder, Lena A Löschel, Jan Missun, Sarah Muszynski, Anja F R M Ramsperger, Isabella Schrank, Susan Speck, Sebastian Steibl, Benjamin Trotter, Isabel Winter, Christian Laforsch
Plastic debris is ubiquitous in the marine environment and the world's shores represent a major sink. However, knowledge about plastic abundance in remote areas is scarce. Therefore, plastic abundance was investigated on a small island of the Maldives. Plastic debris (>1mm) was sampled once in natural long-term accumulation zones at the north shore and at the high tide drift line of the south shore on seven consecutive days to quantify daily plastic accumulation. Reliable identification of plastic debris was ensured by FTIR spectroscopy...
January 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28108016/can-benthic-quality-assessment-be-impaired-by-uncertain-species-sensitivities
#4
Romualda Chuševė, Darius Daunys
This study tested robustness of mathematically defined species sensitivity with manipulation of disturbance gradient coverage by datasets on two different pressures and two depth zones of the central Baltic Sea. The results indicate large differences of sensitivity values for the same species when depth range changed. After addition of samples from impacted sites to the control datasets, estimated sensitivity values decreased for half of analysed species. Sensitivity of tolerant species appeared to be highly dependent on the coverage of disturbance gradient by the dataset, while sensitive species were highly robust to this effect...
January 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28108015/seasonal-variation-of-polycyclic-aromatic-hydrocarbons-in-the-surface-sediments-of-the-southern-caspian-sea
#5
Mehrnaz Baniemam, Ali Mashinchian Moradi, Alireza Riyahi Bakhtiari, Mohammad Reza Fatemi, Keivan Ejlali Khanghah
The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) were determined in sediments from the southern Caspian Sea in fall 2015 and winter 2016. The sum of 16 PAH (ΣPAH) concentrations varied from 17.3±3.05 to 926.7±157.37ngg(-1) dry weight and 14.3±0.58 to 85.8±4.41ngg(-1) dry weight in fall and winter, respectively. There was no significant correlation between PAH and total organic carbon contents (p>0.05). PAH source identification showed that the PAHs in the sediments originated from petroleum and petroleum combustion...
January 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28104230/first-evidence-of-persistent-organic-contaminants-as-potential-anthropogenic-stressors-in-the-barndoor-skate-dipturus-laevis
#6
Kady Lyons, Douglas H Adams
Although exploited populations of elasmobranchs may be able to recover from fishing pressure, there is little information regarding the Barndoor Skate's ability to cope with other anthropogenic stressors such as organic contaminants (OCs). Legacy OCs were measured in liver, muscle and ova from fourteen Barndoor Skates with mature skates having significantly greater mean concentrations of OCs than immature skates, demonstrating bioaccumulation with age. Using Toxic Equivalency Factors, skates were found to have levels of PCBs that have been shown to elicit negative physiological responses in other fishes and these results highlight the need for future studies to investigate the potential impacts that bioaccumulated organic contaminants have on the recovery and conservation of this vulnerable species...
January 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28100401/modelling-the-long-term-evolution-of-worst-case-arctic-oil-spills
#7
Hauke Blanken, Louis Bruno Tremblay, Susan Gaskin, Alexander Slavin
We present worst-case assessments of contamination in sea ice and surface waters resulting from hypothetical well blowout oil spills at ten sites in the Arctic Ocean basin. Spill extents are estimated by considering Eulerian passive tracers in the surface ocean of the MITgcm (a hydrostatic, coupled ice-ocean model). Oil in sea ice, and contamination resulting from melting of oiled ice, is tracked using an offline Lagrangian scheme. Spills are initialized on November 1st 1980-2010 and tracked for one year. An average spill was transported 1100km and potentially affected 1...
January 15, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28094042/responses-of-the-rotifer-brachionus-plicatilis-to-flame-retardant-bde-47-stress
#8
Xiaoyang Jian, Xuexi Tang, Ningning Xu, Jingjing Sha, You Wang
A series of short-term toxicological tests were conducted on the rotifer Brachionus plicatilis to assess the toxicity of the flame retardant 2,2',4,4'-tetrabrominated biphenyl ether (BDE-47). BDE-47 increased mortality, morphological damage, and altered population dynamics and fecundity of rotifer. Antioxidant enzymes were differentially changed to maintain the balance between antioxidant and pro-oxidant activity. However, with increases in the concentration of BDE-47, the metabolic and antioxidant activity decreased...
January 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28094041/superstars-assessing-nutrient-thresholds-for-enhanced-larval-success-of-acanthaster-planci-a-review-of-the-evidence
#9
Kennedy Wolfe, Alexia Graba-Landry, Symon A Dworjanyn, Maria Byrne
Crown-of-thorns starfish, Acanthaster planci (COTS), predation is a major cause of coral reef decline, but the factors behind their population outbreaks remain unclear. Increased phytoplankton food resulting from eutrophication is suggested to enhance larval survival. We addressed the hypothesis that larval success is associated with particular chl-a levels in tightly controlled larval:algal conditions. We used chl-a conditions found on coral reefs (0.1-5.0μgchl-aL(-1)), including nominal threshold levels for disproportionate larval success (≥1...
January 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28089553/plastic-debris-straps-on-threatened-blue-shark-prionace-glauca
#10
Ana I Colmenero, Claudio Barría, Elisabetta Broglio, Salvador García-Barcelona
Juveniles of blue shark Prionace glauca caught in pelagic longlines targeting tuna and swordfish in the Atlantic Ocean and the Mediterranean Sea were found entangled with plastic straps around their gill region. The plastic debris were identified as strapping bands and caused several degrees of injuries on the dorsal musculature and pectoral fins. They were also obstructing the gill slits probably causing breathing issues. These records were uploaded in the web site seawatchers.org, and highlight the potential of citizen science in revealing the occurrence of such problems which could help to measure the effects of plastic debris on marine life...
January 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28089552/plankton-resting-stages-in-recent-sediments-of-haifa-port-israel-eastern-mediterranean-distribution-viability-and-potential-environmental-consequences
#11
Fernando Rubino, Manuela Belmonte, Bella S Galil
Resting stages of plankton were sampled in the surficial sediments in the port of Haifa, Israel, on the eve of a major port enlargement project. We recorded the structure of the assemblages and examined their relationship with different environments within the port. Our findings reveal a remarkably high diversity coupled with low density and the highest number of oligotrich ciliate cyst types recorded from marine sediments. Near the eutrophic and highly polluted zone of the Kishon estuary ciliates were more abundant than elsewhere in the port, whereas dinoflagellates' abundance was reduced, and these trends held true both for full and empty cysts...
January 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28089551/seasonal-circulation-assessments-of-the-northern-arabian-persian-gulf
#12
Y Alosairi, T Pokavanich
Due to the continuous human activities linked to economic expansion in the Arabian Gulf area (also known as Persian Gulf), various activities have had an adverse impact on the coastal environment. Furthermore, reduction of precipitation and river flows has resulted in alterations to the hydro-environment regime at various levels. The current study uses a detailed numerical model that was validated with recent field measurements to determine the comprehensive seasonal circulations of the Northern Arabian/Persian Gulf (NAG)...
January 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28089550/assessment-of-microplastic-sorbed-contaminant-bioavailability-through-analysis-of-biomarker-gene-expression-in-larval-zebrafish
#13
Victoria A Sleight, Adil Bakir, Richard C Thompson, Theodore B Henry
Microplastics (MPs) are prevalent in marine ecosystems. Because toxicants (termed here "co-contaminants") can sorb to MPs, there is potential for MPs to alter co-contaminant bioavailability. Our objective was to demonstrate sorption of two co-contaminants with different physicochemistries [phenanthrene (Phe), log10Kow=4.57; and 17α-ethinylestradiol (EE2), log10Kow=3.67] to MPs; and assess whether co-contaminant bioavailability was increased after MP settlement. Bioavailability was indicated by gene expression in larval zebrafish...
January 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28088370/predator-prey-interaction-between-muricid-gastropods-and-mussels-under-ocean-acidification
#14
X-Y Xu, K R Yip, P K S Shin, S G Cheung
Predation of the muricid gastropod Thais clavigera on two-sized groups of the mussel Brachidontes variabilis was studied under three pCO2 levels, 380, 950, and 1250μatm. At 950μatm pCO2 level, the prey handling time decreased significantly and large-sized B. variabilis were preferred by T. clavigera. However, the prey consumption rate was independent of pCO2 levels, although the prey searching time increased significantly at elevated pCO2. These findings indicated that the predator-prey interaction between T...
January 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28088369/assessment-of-human-induced-change-and-biological-risk-posed-by-contaminants-in-estuarine-harbour-sediments-sydney-harbour-estuary-australia
#15
G F Birch
A rapid, simple yet scientifically sound scheme providing two important types of information used in assessment of estuarine sediments is presented. The mean enrichment quotient (MEQ) (fine contemporary sediment metal concentration/fine fraction background metal concentration) for Cu, Pb and Zn provides the magnitude of human-induced change, (deviation from the pristine condition), while sediment quality guidelines (SQGs) assess the risk posed by sedimentary contaminants to the benthic community. Maximum metal enrichment for sediment in Sydney estuary (Australia) is >100 times for Cu, Pb and Zn and the MEQ is >10 times for most of the estuary...
January 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28088368/pollutants-and-biomarker-responses-in-two-reef-fish-species-haemulon-aurolineatum-and-ocyurus-chrysurus-in-the-southern-gulf-of-mexico
#16
Gerardo Gold-Bouchot, J Rubio-Piña, J Montero-Muñoz, N Ramirez-Miss, A Echeverría-García, V Patiño-Suarez, C A Puch-Hau, O Zapata-Pérez
The environmental quality differences between two groups of reefs in the Veracruz Reef System were evaluated. The North group of reefs is very close to Veracruz, an urban and port zone, whereas the South group is more isolated, with minor anthropogenic disturbances. To prove the hypothesis that the North group is more affected by anthropogenic activities, the concentrations of hydrocarbons in liver, metals and metalloids such as Se, As, Ba, Cd, Hg and V in muscle, and PAH metabolites in bile were evaluated, and related to biomarkers (transcript abundance of cytochrome P4501A, Vitellogenin, and Glutathione-S-transferase) in two species of fish: Haemulon aurolineatum and Ocyurus chysurus...
January 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28087050/state-of-the-art-review-and-future-directions-in-oil-spill-modeling
#17
REVIEW
Malcolm L Spaulding
A review of the state of the art in oil spill modeling, focused on the period from 2000 to present is provided. The review begins with an overview of the current structure of spill models and some lessons learned from model development and application and then provides guiding principles that govern the development of the current generation of spill models. A review of the basic structure of spill models, and new developments in specific transport and fate processes; including surface and subsurface transport, spreading, evaporation, dissolution, entrainment and oil droplet size distributions, emulsification, degradation, and sediment oil interaction are presented...
January 10, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28081958/texas-and-louisiana-coastal-vulnerability-and-shelf-connectivity
#18
Kristen M Thyng, Robert D Hetland
A numerical study of connectivity between the continental shelf and coast in the northwestern Gulf of Mexico using a circulation model and surface-limited numerical drifters shows that despite seasonal changes in winds, the overall connectivity of the shelf with the coastline is similar in the winter and summer, though it extends more offshore in Texas in summer. However, there is a spatial pattern to the connectivity: more of the inner shelf is connected with the coast in Texas as compared with Louisiana. Subsets of the coast do have seasonal variability: the coast near both Galveston and Port Aransas has more connectivity from upcoast in the winter and from offshore and downcoast in the summer...
January 10, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28081960/determination-of-radioactivity-levels-and-heavy-metal-concentrations-in-seawater-sediment-and-anchovy-engraulis-encrasicolus-from-the-black-sea-in-rize-turkey
#19
Hasan Baltas, Erkan Kiris, Murat Sirin
Seawater, sediment and fish (anchovy) samples consumed in the Rize province of the Eastern Black Sea region of Turkey were collected from five different stations. The radioactivity levels ((226)Ra, (232)Th, (40)K and (137)Cs) were determined in all the samples using a high-purity germanium detector. While (226)Ra, (232)Th and (40)K radionuclides were detected in all samples, the radionuclide concentration of (137)Cs, except for the sediment samples (mean activity is 9±1.4Bqkg(-1)), was not detected for the seawater and fish samples...
January 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28081959/trace-element-accumulation-and-elutriate-toxicity-in-surface-sediment-in-northern-tunisia-tunis-gulf-southern-mediterranean
#20
Walid Oueslati, Noureddine Zaaboub, Mohamed Amine Helali, Rym Ennouri, Maria Virgínia Alves Martins, Amel Dhib, Francois Galgani, Monia El Bour, Ayed Added, Lotfi Aleya
Metal concentrations in sediments were investigated in the Gulf of Tunis, Tunisia, in relation to anthropic activities along the Mejerda River and Ghar El Melh Lagoon, with effluents discharged into the gulf. Distribution of grain size showed that the silty fraction is dominant with 53%, while sand and clay averages are 34 and 12% respectively. Zn concentration increased in the vicinity of the Mejerda River while Pb was at its highest levels at the outlet of Ghar El Mehl Lagoon. Sediment elutriate toxicity, as measured by oyster embryo bioassays, ranged from 10 to 45% abnormalities after 24h, but no relation was found between metal concentration and sediment toxicity...
January 9, 2017: Marine Pollution Bulletin
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