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Marine Pollution Bulletin

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https://www.readbyqxmd.com/read/29778407/the-current-status-of-coral-reefs-and-their-vulnerability-to-climate-change-and-multiple-human-stresses-in-the-comoros-archipelago-western-indian-ocean
#1
B Cowburn, M A Samoilys, D Obura
Coral bleaching and various human stressors have degraded the coral reefs of the Comoros Archipelago in the past 40 years and rising atmospheric CO2 levels are predicted to further impact marine habitats. The condition of reefs in the Comoros is poorly known; using SCUBA based methods we surveyed reef condition and resilience to bleaching at sites in Grande Comore and Mohéli in 2010 and 2016. The condition of reefs was highly variable, with a range in live coral cover between 6% and 60% and target fishery species biomass between 20 and 500 kg per ha...
May 16, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29773443/sequential-webcam-monitoring-and-modeling-of-marine-debris-abundance
#2
Shin'ichiro Kako, Atsuhiko Isobe, Tomoya Kataoka, Kei Yufu, Shuto Sugizono, Charlie Plybon, Thomas A Murphy
The amount of marine debris washed ashore on a beach in Newport, Oregon, USA was observed automatically and sequentially using a webcam system. To investigate potential causes of the temporal variability of marine debris abundance, its time series was compared with those of satellite-derived wind speeds and sea surface height off the Oregon coast. Shoreward flow induced by downwelling-favorable southerly winds increases marine debris washed ashore on the beach in winter. We also found that local sea-level rise caused by westerly winds, especially at spring tide, moved the high-tide line toward the land, so that marine debris littered on the beach was likely to re-drift into the ocean...
May 14, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29728262/numerical-simulations-of-debris-drift-from-the-great-japan-tsunami-of-2011-and-their-verification-with-observational-reports
#3
Nikolai Maximenko, Jan Hafner, Masafumi Kamachi, Amy MacFadyen
A suite of five ocean models is used to simulate the movement of floating debris generated by the Great Japan Tsunami of 2011. This debris was subject to differential wind and wave-induced motion relative to the ambient current (often termed "windage") which is a function of the shape, size, and buoyancy of the individual debris items. Model solutions suggest that during the eastward drift across the North Pacific the debris became "stratified" by the wind so that objects with different windages took different paths: high windage items reached North America in large numbers the first year, medium windage items recirculated southwest toward Hawaii and Asia, and low windage items collected in the Subtropical Gyre, primarily in the so-called "garbage patch" area located northeast of Hawaii and known for high concentrations of microplastics...
May 2, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29704949/corrigendum-to-impact-of-intense-rains-and-flooding-on-mercury-riverine-input-to-the-coastal-zone-mar-pollut-bull-127-2018-593-602
#4
Dominika Saniewska, Magdalena Bełdowska, Jacek Bełdowski, Michał Saniewski, Karolina Gębka, Marta Szubska, Agnieszka Wochna
No abstract text is available yet for this article.
April 25, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29653836/port-baseline-biological-surveys-and-seaweed-bioinvasions-in-port-areas-what-s-the-matter-in-the-adriatic-sea
#5
Antonella Petrocelli, Boris Antolić, Luca Bolognini, Ester Cecere, Ivan Cvitković, Marija Despalatović, Annalisa Falace, Stefania Finotto, Ljiljana Iveša, Vesna Mačić, Mauro Marini, Martina Orlando-Bonaca, Fernando Rubino, Benedetta Trabucco, Ante Žuljević
One of the objectives of the BALMAS project was to conduct Port Baseline Biological Surveys of native and non-indigenous benthic flora in 12 Adriatic ports. Samples of macroalgae growing on vertical artificial substrates were collected in spring and autumn 2014 and/or 2015. A total number of 248 taxa, 152 Rhodophyta, 62 Chlorophyta, and 34 Ochrophyta, were identified. Of these, 13 were non-indigenous seaweeds, mainly filamentous macroalgae, that were probably introduced through hull fouling. Some of these taxa had already been described in the study areas, others were recorded for the first time, a few were no longer detected at sites where they had previously been recorded (e...
April 11, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29636186/status-of-faecal-pollution-in-ports-a-basin-wide-investigation-in-the-adriatic-sea
#6
Gian Marco Luna, Elena Manini, Valentina Turk, Tinkara Tinta, Giuseppe D'Errico, Elisa Baldrighi, Vanja Baljak, Donatella Buda, Marina Cabrini, Alessandra Campanelli, Arijana Cenov, Paola Del Negro, Dragana Drakulović, Cinzia Fabbro, Marin Glad, Dolores Grilec, Federica Grilli, Sandra Jokanović, Slaven Jozić, Vesna Kauzlarić, Romina Kraus, Mauro Marini, Josip Mikuš, Stefania Milandri, Marijana Pećarević, Laura Perini, Grazia Marina Quero, Mladen Šolić, Darija Vukić Lušić, Silvia Zoffoli
Ports are subject to a variety of anthropogenic impacts, and there is mounting evidence of faecal contamination through several routes. Yet, little is known about pollution in ports by faecal indicator bacteria (FIB). FIB spatio-temporal dynamics were assessed in 12 ports of the Adriatic Sea, a semi-enclosed basin under strong anthropogenic pressure, and their relationships with environmental variables were explored to gain insight into pollution sources. FIB were abundant in ports, often more so than in adjacent areas; their abundance patterns were related to salinity, oxygen, and nutrient levels...
April 7, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29573811/the-discovery-of-deep-water-seagrass-meadows-in-a-pristine-indian-ocean-wilderness-revealed-by-tracking-green-turtles
#7
N Esteban, R K F Unsworth, J B Q Gourlay, G C Hays
Our understanding of global seagrass ecosystems comes largely from regions characterized by human impacts with limited data from habitats defined as notionally pristine. Seagrass assessments also largely focus on shallow-water coastal habitats with comparatively few studies on offshore deep-water seagrasses. We satellite tracked green turtles (Chelonia mydas), which are known to forage on seagrasses, to a remote, pristine deep-water environment in the Western Indian Ocean, the Great Chagos Bank, which lies in the heart of one of the world's largest marine protected areas (MPAs)...
March 21, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29534833/seasonal-dynamics-of-trace-elements-in-sediment-and-seagrass-tissues-in-the-largest-zostera-japonica-habitat-the-yellow-river-estuary-northern-china
#8
Haiying Lin, Tao Sun, Matthew P Adams, Yi Zhou, Xiaomei Zhang, Shaochun Xu, Ruiting Gu
Trace element accumulation is an anthropogenic threat to seagrass ecosystems, which in turn may affect the health of humans who depend on these ecosystems. Trace element accumulation in seagrass meadows may vary temporally due to, e.g., seasonal patterns in sediment discharge from upstream areas. In addition, when several trace elements are present in sufficiently high concentrations, the risk of seagrass loss due to the cumulative impact of these trace elements is increased. To assess the seasonal variation and cumulative risk of trace element contamination to seagrass meadows, trace element (As, Cd, Cr, Cu, Pb, Hg, Mn and Zn) levels in surface sediment and seagrass tissues were measured in the largest Chinese Zostera japonica habitat, located in the Yellow River Estuary, at three sites and three seasons (fall, spring and summer) in 2014-2015...
March 10, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680573/carapace-asymmetry-a-possible-biomarker-for-metal-accumulation-in-adult-olive-ridleys-marine-turtles
#9
Adriana A Cortés-Gómez, Diego Romero, Marc Girondot
The Olive Ridley marine turtle (Lepidochelys olivacea) is characterized by individual morphological variability in the number and shape of scutes. The influence of pollutants on developmental instability and one of its consequences, the asymmetry of individuals, has been demonstrated in several species, especially invertebrates and some birds. However, the use of this asymmetry as a biomarker of contamination in adult individuals has never been explored. We developed an index to quantify developmental instability (DIx) based on the number and relative size of costal carapace scutes...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680572/the-biogenic-reefs-formed-by-the-alien-polychaete-hydroides-dianthus-serpulidae-annelida-favor-the-polyp-stage-of-aurelia-coerulea-cnidaria-scyphozoa-in-a-coastal-artificial-lake
#10
Zhijun Dong, Tingting Sun, Lei Wang
Blooms of the moon jellyfish Aurelia coerulea frequently occur in coastal waters. The increased availability of substrates for the settlement and proliferation of polyps due to the expansion of artificial structures in coastal areas has been proposed as a possible contributing factor in jellyfish blooms. This paper investigates whether a marine artificial lake (Fenghuang Lake) provides additional substrates for A. coerulea polyps and contributes to jellyfish blooms. High densities of A. coerulea ephyrae were discovered in this lake, with a mean density of 41 individuals/m3 and a maximum measured density of 128 individuals/m3 ...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680571/baseline-levels-of-biochemical-biomarkers-in-the-endobenthic-ragworm-hediste-diversicolor-as-useful-tools-in-biological-monitoring-of-estuaries-under-anthropogenic-pressure
#11
Andrew Barrick, Jean-Marie Marion, Hanane Perrein-Ettajani, Amelie Châtel, Catherine Mouneyrac
Identification of contamination in estuarine ecosystems that are impacted by anthropogenic pressures, such as the Seine estuary, is difficult to determine without considering the role environmental variation plays on the end points selected. Currently, there is interest in identifying methods in which the influence of confounding factors can be described and accounted for. In this context, the aim of this study was to define a baseline assessment criteria (BAC) for enzymatic biomarkers in ragworms (Hediste diversicolor) collected in a reference site (Authie)...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680570/no-evidence-of-damage-to-the-soft-tissue-or-skeletal-integrity-of-mesophotic-corals-exposed-to-a-3d-marine-seismic-survey
#12
Andrew Heyward, Jamie Colquhoun, Edward Cripps, Denise McCorry, Marcus Stowar, Ben Radford, Karen Miller, Ian Miller, Chris Battershill
Scleractinian corals, primarily plate corals in families Agaricidae and Acroporidae, were monitored in situ before, during and after a 3D marine seismic survey. An initial four day seismic run, resulting in a maximum 24 h received sound exposure level (SEL24 ) of 204 dB re 1 μPa2 ·s and received 0-to-peak pressure (PK Pressure) of 226 dB re 1 μPa, had no detectable effect on soft tissues or skeletal integrity. Subsequently, a full marine seismic survey (Maxima 3D MSS), proceeded over two months and included seismic acquisition lines at 240 m spacing over the broader reef lagoon (South Scott Reef), generating maximum received SEL24 of 197 dB re 1 μPa2 ·s and received PK Pressure of 220 dB re 1 μPa at the coral monitoring sites...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680569/a-multi-indicator-approach-for-identifying-shoreline-sewage-pollution-hotspots-adjacent-to-coral-reefs
#13
Leilani M Abaya, Tracy N Wiegner, Steven L Colbert, James P Beets, Kaile'a M Carlson, K Lindsey Kramer, Rebecca Most, Courtney S Couch
Sewage pollution is contributing to the global decline of coral reefs. Identifying locations where it is entering waters near reefs is therefore a management priority. Our study documented shoreline sewage pollution hotspots in a coastal community with a fringing coral reef (Puakō, Hawai'i) using dye tracer studies, sewage indicator measurements, and a pollution scoring tool. Sewage reached shoreline waters within 9 h to 3 d. Fecal indicator bacteria concentrations were high and variable, and δ15 N macroalgal values were indicative of sewage at many stations...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680568/novel-methodology-to-isolate-microplastics-from-vegetal-rich-samples
#14
Alicia Herrera, Paloma Garrido-Amador, Ico Martínez, María Dolores Samper, Juan López-Martínez, May Gómez, Theodore T Packard
Microplastics are small plastic particles, globally distributed throughout the oceans. To properly study them, all the methodologies for their sampling, extraction, and measurement should be standardized. For heterogeneous samples containing sediments, animal tissues and zooplankton, several procedures have been described. However, definitive methodologies for samples, rich in algae and plant material, have not yet been developed. The aim of this study was to find the best extraction protocol for vegetal-rich samples by comparing the efficacies of five previously described digestion methods, and a novel density separation method...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680567/the-unaccountability-case-of-plastic-pellet-pollution
#15
Therese M Karlsson, Lars Arneborg, Göran Broström, Bethanie Carney Almroth, Lena Gipperth, Martin Hassellöv
Plastic preproduction pellets are found in environmental samples all over the world and their presence is often linked to spills during production and transportation. To better understand how these pellets end up in the environment we assessed the release of plastic pellets from a polyethylene production site in a case study area on the Swedish west coast. The case study encompasses; field measurements to evaluate the level of pollution and pathways, models and drifters to investigate the potential spread and a revision of the legal framework and the company permits...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680566/altered-fish-community-and-feeding-behaviour-in-close-proximity-to-boat-moorings-in-an-urban-estuary
#16
Brendan S Lanham, Adriana Vergés, Luke H Hedge, Emma L Johnston, Alistair G B Poore
Coastal urbanization has led to large-scale transformation of estuaries, with artificial structures now commonplace. Boat moorings are known to reduce seagrass cover, but little is known about their effect on fish communities. We used underwater video to quantify abundance, diversity, composition and feeding behaviour of fish assemblages on two scales: with increasing distance from moorings on fine scales, and among locations where moorings were present or absent. Fish were less abundant in close proximity to boat moorings, and the species composition varied on fine scales, leading to lower predation pressure near moorings...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680565/macondo-oil-in-northern-gulf-of-mexico-waters-part-1-assessments-and-forensic-methods-for-deepwater-horizon-offshore-water-samples
#17
James R Payne, William B Driskell
Forensic chemistry assessments documented the presence of Macondo (MC252) oil from the Deepwater Horizon (DWH) spill in offshore water samples collected under Natural Resource Damage Assessment (NRDA) protocols. In ocean depths, oiled water was sampled, observed, photographed, and tracked in dissolved oxygen (DO) and fluorometry profiles. Chemical analyses, sensor records, and observations confirmed the shifting, rising oil plume above the wellhead while smaller, less buoyant droplets were entrapped in a layer at ~1000-1400 m and advected up to 412 km southwest...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680564/status-of-coral-reefs-of-upolu-independent-state-of-samoa-in-the-south-west-pacific-and-recommendations-to-promote-resilience-and-recovery-of-coastal-ecosystems
#18
Maren Ziegler, Gaëlle Quéré, Jean-François Ghiglione, Guillaume Iwankow, Valérie Barbe, Emilie Boissin, Patrick Wincker, Serge Planes, Christian R Voolstra
Coral reef ecosystems worldwide are immediately threatened by the impacts of climate change. Here we report on the condition of coral reefs over 83 km of coastline at the island of Upolu, Samoa in the remote South West Pacific in 2016 during the Tara Pacific Expedition. Despite the distance to large urban centers, coral cover was extremely low (<1%) at approximately half of the sites and below 10% at 78% of sites. Two reef fish species, Acanthurus triostegus and Zanclus cornutus, were 10% smaller at Upolu than at neighboring islands...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680563/limited-impact-of-several-years-of-pretreated-wastewater-discharge-on-fauna-and-vegetation-in-a-mangrove-ecosystem
#19
C Capdeville, K Abdallah, E Buffan-Dubau, C Lin, F Azemar, L Lambs, F Fromard, J L Rols, J Leflaive
It was hypothesized that mangroves, tropical wetlands, could be used for the finishing treatment of domestic wastewaters. Our aim was to determine if a nutrient-stressed mangrove could tolerate long-term discharges of pretreated wastewater (PW). Since 2008, in an in situ experimental system set up in Mayotte Island (Indian Ocean), domestic PW are discharged into two impacted areas (675 m2 ) dominated by different species of mangrove trees. Anthropogenic inputs during > 4.5 years led to an increase in vegetation growth associated with an increase in leaf pigment content, leaf surface and tree productivity...
April 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29680562/microbial-community-and-metagenome-dynamics-during-biodegradation-of-dispersed-oil-reveals-potential-key-players-in-cold-norwegian-seawater
#20
Deni Ribicic, Roman Netzer, Terry C Hazen, Stephen M Techtmann, Finn Drabløs, Odd Gunnar Brakstad
Oil biodegradation as a weathering process has been extensively investigated over the years, especially after the Deepwater Horizon blowout. In this study, we performed microcosm experiments at 5 °C with chemically dispersed oil in non-amended seawater. We link biodegradation processes with microbial community and metagenome dynamics and explain the succession based on substrate specialization. Reconstructed genomes and 16S rRNA gene analysis revealed that Bermanella and Zhongshania were the main contributors to initial n-alkane breakdown, while subsequent abundances of Colwellia and microorganisms closely related to Porticoccaceae were involved in secondary n‑alkane breakdown and beta‑oxidation...
April 2018: Marine Pollution Bulletin
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