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Marine Pollution Bulletin

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https://www.readbyqxmd.com/read/29331284/effects-of-an-experimental-heat-wave-on-fatty-acid-composition-in-two-mediterranean-seagrass-species
#1
Pedro Beca-Carretero, Freddy Guihéneuf, Lázaro Marín-Guirao, Jaime Bernardeau-Esteller, Rocío García-Muñoz, Dagmar B Stengel, Juan M Ruiz
Global warming is emerging as one of the most critical threats to terrestrial and marine species worldwide. This study assessed the effects of simulated warming events in culture on two seagrass species, Posidonia oceanica and Cymodocea nodosa, which play a key role in coastal ecosystems of the Mediterranean Sea. Changes in fatty acids as key metabolic indicators were assessed in specimens from two geographical populations of each species adapted to different in situ temperature regimes. Total fatty acid (TFA) content and composition were compared in C...
January 10, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29331283/the-influx-of-marine-debris-from-the-great-japan-tsunami-of-2011-to-north-american-shorelines
#2
Cathryn Clarke Murray, Nikolai Maximenko, Sherry Lippiatt
Marine debris is one of the leading threats to the ocean and the Great East Japan Earthquake and tsunami on March 11, 2011 washed away an estimated 5million tons of debris in a single, tragic event. Here we used shoreline surveys, disaster debris reports and ocean drift models to investigate the temporal and spatial trends in the arrival of tsunami marine debris. The increase in debris influx to surveyed North American and Hawaiian shorelines was substantial and significant, representing a 10 time increase over the baseline in northern Washington State where a long term dataset was available...
January 10, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29295741/phytoplankton-diversity-in-adriatic-ports-lessons-from-the-port-baseline-survey-for-the-management-of-harmful-algal-species
#3
Patricija Mozetič, Monica Cangini, Janja Francé, Mauro Bastianini, Fabrizio Bernardi Aubry, Mia Bužančić, Marina Cabrini, Federica Cerino, Marijeta Čalić, Raffaele D'Adamo, Dragana Drakulović, Stefania Finotto, Daniela Fornasaro, Federica Grilli, Romina Kraus, Nataša Kužat, Daniela Marić Pfannkuchen, Živana Ninčević Gladan, Marinella Pompei, Ana Rotter, Irene Servadei, Sanda Skejić
An inventory of phytoplankton diversity in 12 Adriatic ports was performed with the port baseline survey. Particular emphasis was put on the detection of harmful aquatic organisms and pathogens (HAOP) because of their negative impact on ecosystem, human health, and the economy. Phytoplanktonic HAOP are identified as species, either native or non-indigenous (NIS), which can trigger harmful algal blooms (HAB). A list of 691 taxa was prepared, and among them 52 were classified as HAB and five as NIS. Records of toxigenic NIS (Pseudo-nitzschia multistriata, Ostreopsis species including O...
December 30, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29274953/non-indigenous-macrozoobenthic-species-on-hard-substrata-of-selected-harbours-in-the-adriatic-sea
#4
A Spagnolo, R Auriemma, T Bacci, I Balković, F Bertasi, L Bolognini, M Cabrini, L Cilenti, C Cuicchi, I Cvitković, M Despalatović, F Grati, L Grossi, A Jaklin, L Lipej, O Marković, B Mavrič, B Mikac, F Nasi, V Nerlović, S Pelosi, M Penna, S Petović, E Punzo, A Santucci, T Scirocco, P Strafella, B Trabucco, A Travizi, A Žuljević
The intense shipping traffic characterising the Adriatic Sea favours the spread of marine organisms. Yet, a study of 12 Adriatic ports (4 on the western side and 8 on the eastern side of the basin) found that non-indigenous species (NIS) accounted for only 4% of the benthic communities settled on hard substrates. The cirripeds Amphibalanus amphitrite and Balanus trigonus, found in 8 harbours, were the most common invaders followed by Amphibalanus eburneus, the ascidian Styela plicata, and the bivalve Magallana gigas...
December 20, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29273243/mapping-coastal-marine-debris-using-aerial-imagery-and-spatial-analysis
#5
Kirsten Moy, Brian Neilson, Anne Chung, Amber Meadows, Miguel Castrence, Stephen Ambagis, Kristine Davidson
This study is the first to systematically quantify, categorize, and map marine macro-debris across the main Hawaiian Islands (MHI), including remote areas (e.g., Niihau, Kahoolawe, and northern Molokai). Aerial surveys were conducted over each island to collect high resolution photos, which were processed into orthorectified imagery and visually analyzed in GIS. The technique provided precise measurements of the quantity, location, type, and size of macro-debris (>0.05m2), identifying 20,658 total debris items...
December 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29224888/anthropogenic-eutrophication-affects-the-body-size-of-cymodocea-nodosa-in-the-north-aegean-sea-a-long-term-scale-based-approach
#6
Papathanasiou Vasileios, Orfanidis Sotiris
The variation of eleven Cymodocea nodosa metrics was studied along two anthropogenic gradients in the North Aegean Sea, in two separate periods (July 2004 and July 2013). The aim was to specify existing monitoring programs on different kind of human-induced or natural stress for a better decision-making support. Key water variables (N-NO2, N-NO3, N-NH4, P-PO4, Chl-a, attenuation coefficient-K, and suspended solids) along with the stress index MALUSI were also estimated in each sampling effort. All metrics (except one) showed significant differences (p<0...
December 7, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29221592/ecosystem-features-determine-seagrass-community-response-to-sea-otter-foraging
#7
Margot Hessing-Lewis, Erin U Rechsteiner, Brent B Hughes, M Tim Tinker, Zachary L Monteith, Angeleen M Olson, Matthew Morgan Henderson, Jane C Watson
Comparing sea otter recovery in California (CA) and British Columbia (BC) reveals key ecosystem properties that shape top-down effects in seagrass communities. We review potential ecosystem drivers of sea otter foraging in CA and BC seagrass beds, including the role of coastline complexity and environmental stress on sea otter effects. In BC, we find greater species richness across seagrass trophic assemblages. Furthermore, Cancer spp. crabs, an important link in the seagrass trophic cascade observed in CA, are less common...
December 5, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29137813/reasons-for-seagrass-optimism-local-ecological-knowledge-confirms-presence-of-dugongs
#8
Leanne C Cullen-Unsworth, Benjamin L Jones, Rachel Seary, Rhian Newman, Richard K F Unsworth
Dugongs (Dugong dugon) depend on seagrass meadows for food. As such seagrass and dugong conservation should go hand in hand. Assessing dugong populations is notoriously challenging. In the most resource dependent communities Local Ecological Knowledge (LEK) is generally high and can provide an alternative to the use of expensive ecological surveys to understand dugong populations and support associated resource management decisions. Residents of the Wakatobi National Park (WNP), SE Sulawesi, Indonesia are highly dependent on marine resources for livelihoods and correspondingly LEK is high...
November 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29137812/crowdsourcing-conservation-the-role-of-citizen-science-in-securing-a-future-for-seagrass
#9
Benjamin L Jones, Richard K F Unsworth, Len J McKenzie, Rudi L Yoshida, Leanne C Cullen-Unsworth
Seagrass meadows are complex social-ecological systems. Understanding seagrass meadows demands a fresh approach integrating "the human dimension". Citizen science is widely acknowledged for providing significant contributions to science, education, society and policy. Although the take up of citizen science in the marine environment has been slow, the need for such methods to fill vast information gaps is arguably great. Seagrass meadows are easy to access and provide an example of where citizen science is expanding...
November 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29129321/distribution-sources-and-ecological-risk-assessment-of-quinotone-antibiotics-in-the-surface-sediments-from-jiaozhou-bay-wetland-china
#10
Ke Liu, Xiaofei Yin, Daolai Zhang, Dongyun Yan, Lijuan Cui, Zhigang Zhu, Li Wen
The distribution, sources, and risk assessment of eight quinotone antibiotics (QNs) in the surface sediments from the wetland in Jiaozhou Bay were investigated. The results showed that QNs were detected in all samples, and the total concentrations of QNs in the sediments ranged from 0.276 to 5.229ng/g. The highest concentration occurred at the entrance to the Yang River wetland. Principal component analysis suggested that the QNs mainly originated from sewage discharges from hospitals, human and aquaculture industries...
November 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29129320/an-evaluation-of-cumulative-risks-from-offshore-produced-water-discharges-in-the-bass-strait
#11
T F Parkerton, M Bok, A W Ireland, C M Prosser
Chemical analyses and toxicity testing using six marine species were used to characterize the hazard of produced waters (PW) to marine life from twelve Australian offshore platforms. Hazard data were used in conjunction with platform-specific plume discharge dilution and species sensitivity distribution modeling to estimate cumulative risks by calculating the multiple substance potentially affected fraction of species in the local marine environment. Results provided two independent lines of evidence demonstrating that cumulative risks to marine life from these discharges meet intended 95% species protection goals at the edge of the mixing zone...
November 9, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29126560/assessment-of-fecal-pollution-in-lake-pontchartrain-louisiana
#12
Jia Xue, Siyu Lin, Frederica G Lamar, Jennifer G Lamori, Samendra Sherchan
Water quality in Lake Pontchartrain was deteriorating and recreational activities along the beach were restricted by the end of the 20th Century. A microbial source tracking (MST) study was conducted to determine the fecal contamination sources at public beach of the lake, so that effective pollution control strategies can be developed. Water samples were collected over an eight-month period at ten locations along the lake in 2016 and 2017. E. coli and Enterococcus were detected in 90.6% (culture) and 97.5% (qPCR), 95...
November 7, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29108740/distribution-of-heavy-metals-in-seafloor-sediments-on-the-east-china-sea-inner-shelf-seasonal-variations-and-typhoon-impact
#13
Yunhai Li, Yunpeng Lin, Liang Wang
Based on concentrations and distributions of heavy metals, grain size and loss on ignition (LOI) in the seafloor sediments acquired during three surveys in winter and in summer (before and after typhoon Morakot) in the mud deposition center off the Fujian-Zhejiang coast, East China Sea, the seasonal and typhoon-induced variations of heavy metals in seafloor sediments are discussed. It is found that different concentrations of heavy metals occurred in seafloor sediments, but their distribution patterns were similar, gradually decreasing from near-shore to offshore...
November 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29108739/status-of-vulnerable-cystoseira-populations-along-the-italian-infralittoral-fringe-and-relationships-with-environmental-and-anthropogenic-variables
#14
F P Mancuso, E M A Strain, E Piccioni, O De Clerck, G Sarà, L Airoldi
We analyzed the occurrence and status of infralittoral fringe populations of Cystoseira spp. (Fucales) at thirteen rocky sites around the Italian coastline, and explored the relationships with relevant environmental and anthropogenic variables. We found Cystoseira populations at 11 sites: most were scattered and comprised monospecific stands of C. compressa, and only 6 sites also supported sparse specimens of either C. amentacea var. stricta or C. brachycarpa. Coastal human population density, Chlorophyll a seawater concentrations, sea surface temperature, annual range of sea surface temperature and wave fetch explained most of the variation of the status of C...
November 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29108738/characterization-and-flux-of-marine-oil-snow-settling-toward-the-seafloor-in-the-northern-gulf-of-mexico-during-the-deepwater-horizon-incident-evidence-for-input-from-surface-oil-and-impact-on-shallow-shelf-sediments
#15
Scott A Stout, Christopher R German
Sediment trap samples from the shelf edge area (400-450m water depth), 58km northeast of the failed Macondo well, were collected before, during and after the Deepwater Horizon oil spill. Detailed chemical analyses of particulates revealed that fluxes of spill-derived TPH (2356μg/m(2)/day), total PAH (5.4μg/m(2)/day), and hopane (0.89μg/m(2)/day) settling to the seafloor directly beneath the surface-plume were 19- to 44-times higher during the active spill than pre- and post-spill background values. The oil was variably biodegraded, evaporated and photo-oxidized indicating that it derived from the sinking of surface oil...
November 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29108737/seasonal-and-diel-patterns-in-cetacean-use-and-foraging-at-a-potential-marine-renewable-energy-site
#16
Hanna K Nuuttila, Chiara M Bertelli, Anouska Mendzil, Nessa Dearle
Marine renewable energy (MRE) developments often coincide with sites frequented by small cetaceans. To understand habitat use and assess potential impact from development, echolocation clicks were recorded with acoustic click loggers (C-PODs) in Swansea Bay, Wales (UK). General Additive Models (GAMs) were applied to assess the effects of covariates including month, hour, tidal range and temperature. Analysis of inter-click intervals allowed the identification of potential foraging events as well as patterns of presence and absence...
November 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29103659/development-of-a-storm-surge-driven-water-quality-model-to-simulate-spills-during-hurricanes
#17
Amin Kiaghadi, Hanadi S Rifai, Daniel W Burleson
Hurricanes can cause widespread environmental pollution that has yet to be fully articulated. This study develops a predictive water quality model to forecast potential contamination resulting from buckled or ruptured storage tanks in coastal industrialized areas when subjected to storm surge. The developed EFDC-Storm Surge model (EFDC-SS) couples EPA's EFDC code with the SWAN-ADCIRC hurricane simulation model. EFDC-SS is demonstrated using the Houston Ship Channel in Texas as a testbed and hurricane Ike as a model hurricane...
November 2, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29103658/using-numerical-modelling-in-the-simulation-of-mass-fish-death-phenomenon-along-the-central-coast-of-vietnam
#18
Doan Quang Tri, Nguyen Thi Mai Linh, Nguyen Cao Don
A two-dimensional model was used to reconstruct scenarios related to the mass fish death phenomenon that occurred along the Central Coast of Vietnam. First, a Weather Research Forecasting model was used to simulate the wind field during April 2016, and was then used as an input to the two-dimensional (2D) model. Second, the calibration of the 2D model showed high conformity in both the phases and amplitude between the simulated and observed water levels. The simulation results of two scenarios, S1 and S2, were highly recommended for explaining the mass fish death phenomenon that occurred along the coast from Ha Tinh Province to Thua Thien-Hue Province...
November 2, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29100638/presence-concentrations-and-risk-assessment-of-selected-antibiotic-residues-in-sediments-and-near-bottom-waters-collected-from-the-polish-coastal-zone-in-the-southern-baltic-sea-summary-of-3years-of-studies
#19
Grzegorz Siedlewicz, Anna Białk-Bielińska, Marta Borecka, Aleksandra Winogradow, Piotr Stepnowski, Ksenia Pazdro
Concentrations of selected antibiotic compounds from different groups were measured in sediment samples (14 analytes) and in near-bottom water samples (12 analytes) collected in 2011-2013 from the southern Baltic Sea (Polish coastal zone). Antibiotics were determined at concentration levels of a few to hundreds of ng g(-1) d.w. in sediments and ng L(-1) in near-bottom waters. The most frequently detected compounds were sulfamethoxazole, trimethoprim, oxytetracycline in sediments and sulfamethoxazole and trimethoprim in near-bottom waters...
October 31, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29100637/perturbation-of-seafloor-bacterial-community-structure-by-drilling-waste-discharge
#20
Tan T Nguyen, Sabine K J Cochrane, Bjarne Landfald
Offshore drilling operations result in the generation of drill cuttings and localized smothering of the benthic habitats. This study explores bacterial community changes in the in the upper layers of the seafloor resulting from an exploratory drilling operation at 1400m water depth on the Barents Sea continental slope. Significant restructurings of the sediment microbiota were restricted to the sampling sites notably affected by the drilling waste discharge, i.e. at 30m and 50m distances from the drilling location, and to the upper 2cm of the seafloor...
October 31, 2017: Marine Pollution Bulletin
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