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https://www.readbyqxmd.com/read/28651325/design-of-marine-macroalgae-photobioreactor-integrated-into-building-to-support-seagriculture-for-biorefinery-and-bioeconomy
#1
Alexander Chemodanov, Arthur Robin, Alexander Golberg
Seagriculture, which can provide offshore grown macroalgae biomass would play a significant role in bioeconomy. Nevertheless, seagriculture development has been hindered by the lack of laboratory photobioreactors that enable fundamental and pilot scale macroalgae research. In this work, a macroalgae photobioreactor (MPBR) was developed and integrated into the building. The MPBR operation was demonstrated for 6months with cultivation of Cladophora sp., Ulva compressa and Ulva rigida green macroalgae species isolated from 3 sites at the Eastern Mediterranean coast...
June 13, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28648312/the-emerging-role-of-patient-reported-outcomes-pros-in-clinical-trials-an-indian-perspective
#2
Amit Dang, Raju Kanukula, Chirag Shah, Veena Shetye
In an attempt to reduce costs of clinical trials and increase recruitments, pharmaceutical companies have been shifting their trials to offshore locations in Asia, Africa, the Middle East, Eastern Europe, and Latin America. Hence, methods for conducting clinical trials need to be adapted to the varying languages, cultures, ethnicities, and socioeconomic groups of these regions. This is of prime importance in the collection of patient-reported outcome (PRO) data. To ensure correct capturing of PRO data from multiregional sites, it is important that the tools for data collection are adapted to the respective cultures, and the data collected have the same interpretation across cultures (cross-cultural equivalence)...
May 2017: Value in Health Regional Issues
https://www.readbyqxmd.com/read/28646796/organic-matter-drives-high-interannual-variability-in-methylmercury-concentrations-in-a-subarctic-coastal-sea
#3
A L Soerensen, A T Schartup, A Skrobonja, E Björn
Levels of neurotoxic methylmercury (MeHg) in phytoplankton are strongly associated with water MeHg concentrations. Because uptake by phytoplankton is the first and largest step of bioaccumulation in aquatic food webs many studies have investigated factors driving seasonal changes in water MeHg concentrations. Organic matter (OM) is widely accepted as an important driver of MeHg production and uptake by phytoplankton but is also known for strong interannual variability in concentration and composition within systems...
June 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28646131/insights-on-the-drivers-of-genetic-divergence-in-the-european-anchovy
#4
Gaetano Catanese, Romain Watteaux, Iratxe Montes, Marco Barra, Paola Rumolo, Diego Borme, Bruno Buongiorno Nardelli, Vincenzo Botte, Maria Grazia Mazzocchi, Simona Genovese, Iole Di Capua, Mikel Iriondo, Andone Estonba, Paolo Ruggeri, Valentina Tirelli, Vincenzo Caputo-Barucchi, Gualtiero Basilone, Angelo Bonanno, Daniele Iudicone, Gabriele Procaccini
Anchovies represent the largest world's marine fish catches and the current threats on their populations impose a sustainable exploitment based on sound scientific information. In the European anchovy (Engraulis encrasicolus), the existence of several populations has been proposed but a global view is missing. Using a multidisciplinary approach, here we assessed the divergence among different ecotypes and its possible causes. SNPs have revealed two functionally distinct ecotypes overlapping in the Central Mediterranean, with one ecotype confined near the river estuaries...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28640341/carbonate-buildups-in-the-pernambuco-basin-ne-brazil
#5
Bruno V Buarque, José A Barbosa, Jefferson T C Oliveira, José R G Magalhães, Osvaldo J Correia
The Pernambuco Basin represents one of the most prominent regions for deep water oil and gas exploration off the Brazilian coast. This study aims to identify and describe the occurrence of carbonate buildups in the offshore regions of the basin. The study was based on an analysis of a set of 143 2D time-migrated seismic sections that cover the offshore region of the Pernambuco Basin. An interpretation of the seismic dataset was used to define the main seismic sequences related to the main regional pulses of deposition and to identify three main groups of carbonate buildups: 1) shelf margin reefs, 2) patch reefs, and 3) isolated carbonate buildups...
April 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28633947/occurrence-and-spatial-distribution-of-organophosphorus-flame-retardants-and-plasticizers-in-the-bohai-and-yellow-seas-china
#6
Mingyu Zhong, Jianhui Tang, Lijie Mi, Fei Li, Runmei Wang, Guopei Huang, Huifeng Wu
Seawater samples from 50 sites in the BS and YS were collected to investigate the spatial distribution of 7 OPs. Concentrations of the total OPs (ƩOPs) in the BS and YS ranged from 8.12ngL(-1) to 98.04ngL(-1) with a geometric mean (GM) of 23.70ngL(-1). Tris(1-chloro-2-propyl) phosphate (TCPP) was the dominant compound, followed by tris(2-chloroethyl) phosphate (TCEP) and triphenylphosphine oxide (TPPO). The ƩOPs together with the most commonly detected individual OPs (TCPP, TCEP, tris(1,3-dichloro-2-propyl) phosphate (TDCPP), tri-iso-butyl phosphate (TiBP), triphenyl phosphate (TPhP), and TPPO) tended to decrease from nearshore to offshore and from the surface to the bottom seawaters, indicating major land-based sources...
June 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28626905/genome-architecture-enables-local-adaptation-of-atlantic-cod-despite-high-connectivity
#7
Julia M I Barth, Paul R Berg, Per R Jonsson, Sara Bonanomi, Hanna Corell, Jakob Hemmer-Hansen, Kjetill S Jakobsen, Kerstin Johannesson, Per Erik Jorde, Halvor Knutsen, Per-Olav Moksnes, Bastiaan Star, Nils Chr Stenseth, Henrik Svedäng, Sissel Jentoft, Carl André
Adaptation to local conditions is a fundamental process in evolution; however, mechanisms maintaining local adaptation despite high gene flow are still poorly understood. Marine ecosystems provide a wide array of diverse habitats that frequently promote ecological adaptation even in species characterized by strong levels of gene flow. As one example, populations of the marine fish Atlantic cod (Gadus morhua) are highly connected due to immense dispersal capabilities but nevertheless show local adaptation in several key traits...
June 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28624357/an-estimation-of-the-average-residence-times-and-onshore-offshore-diffusivities-of-beached-microplastics-based-on-the-population-decay-of-tagged-meso-and-macrolitter
#8
Hirofumi Hinata, Keita Mori, Kazuki Ohno, Yasuyuki Miyao, Tomoya Kataoka
Residence times of microplastics were estimated based on the dependence of meso- and macrolitter residence times on their upward terminal velocities (UTVs) in the ocean obtained by one- and two-year mark-recapture experiments conducted on Wadahama Beach, Nii-jima Island, Japan. A significant linear relationship between the residence time and UTV was found in the velocity range of about 0.3-0.9ms(-1), while there was no significant difference between the residence times obtained in the velocity range of about 0...
June 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28619941/recurring-and-triggered-slow-slip-events-near-the-trench-at-the-nankai-trough-subduction-megathrust
#9
Eiichiro Araki, Demian M Saffer, Achim J Kopf, Laura M Wallace, Toshinori Kimura, Yuya Machida, Satoshi Ide, Earl Davis
The discovery of slow earthquakes has revolutionized the field of earthquake seismology. Defining the locations of these events and the conditions that favor their occurrence provides important insights into the slip behavior of tectonic faults. We report on a family of recurring slow-slip events (SSEs) on the plate interface immediately seaward of repeated historical moment magnitude (Mw) 8 earthquake rupture areas offshore of Japan. The SSEs continue for days to several weeks, include both spontaneous and triggered slip, recur every 8 to 15 months, and are accompanied by swarms of low-frequency tremors...
June 16, 2017: Science
https://www.readbyqxmd.com/read/28618818/passive-bottom-reflection-loss-estimation-using-ship-noise-and-a-vertical-line-array
#10
Lanfranco Muzi, Martin Siderius, Christopher M Verlinden
An existing technique for passive bottom-loss estimation from natural marine surface noise (generated by waves and wind) is adapted to use noise generated by ships. The original approach-based on beamforming of the noise field recorded by a vertical line array of hydrophones-is retained; however, additional processing is needed in order for the field generated by a passing ship to show features that are similar to those of the natural surface-noise field. A necessary requisite is that the ship position, relative to the array, varies over as wide a range of steering angles as possible, ideally passing directly over the array to ensure coverage of the steepest angles...
June 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28610205/-i-rhinobatos-i-i-austini-i-n-sp-a-new-species-of-guitarfish-rhinopristiformes-%C3%A2-rhinobatidae-from-the-southwestern-indian-ocean
#11
David A Ebert, Ofer Gon
Rhinobatos austini sp. n. is described from the southwestern Indian Ocean based on four specimens collected from the KwaZulu-Natal Province, South Africa and from Mozambique. The new species, with one exception, can be distinguished from all other members of this genus by a prominent teardrop-shaped dark blotch on the ventral surface of its snout. Its closest congener, R. holcorhynchus, also has a prominent teardrop-shaped blotch on its snout, but the new species differs from it by a lack of prominent thorns and tubercles on it dorsal disc surface and a very striking dorsal surface colour pattern of paired spots, some forming darker transverse bands across its back...
June 11, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610116/additions-of-new-species-to-i-thelepus-i-thelepodidae-with-description-of-a-new-i-terebellides-i-trichobranchidae-from-taiwan
#12
Pan-Wen Hsueh, Kuo-Rong Li
Following a recent report on two new species of Thelepus for the Taiwan, we describe two more new species, T. hemeiensis sp. nov. and T. wuchiensis sp. nov., for the genus. In addition, a new species of the Family Trichobranchidae is also described, Terebellides baliensis sp. nov., which was collected from an offshore monitoring survey in northwestern Taiwan. The genus Terebellides as well as the Family Trichobranchidae are reported for the first time from Taiwanese waters.
March 20, 2017: Zootaxa
https://www.readbyqxmd.com/read/28603671/spatial-variation-in-coral-reef-fish-and-benthic-communities-in-the-central-saudi-arabian-red-sea
#13
Maha T Khalil, Jessica Bouwmeester, Michael L Berumen
Local-scale ecological information is critical as a sound basis for spatial management and conservation and as support for ongoing research in relatively unstudied areas. We conducted visual surveys of fish and benthic communities on nine reefs (3-24 km from shore) in the Thuwal area of the central Saudi Arabian Red Sea. Fish biomass increased with increasing distance from shore, but was generally low compared to reefs experiencing minimal human influence around the world. All reefs had a herbivore-dominated trophic structure and few top predators, such as sharks, jacks, or large groupers...
2017: PeerJ
https://www.readbyqxmd.com/read/28597336/design-features-of-offshore-oil-production-platforms-influence-their-susceptibility-to-biocorrosion
#14
Kathleen E Duncan, Irene A Davidova, Heather S Nunn, Blake W Stamps, Bradley S Stevenson, Pierre J Souquet, Joseph M Suflita
Offshore oil-producing platforms are designed for efficient and cost-effective separation of oil from water. However, design features and operating practices may create conditions that promote the proliferation and spread of biocorrosive microorganisms. The microbial communities and their potential for metal corrosion were characterized for three oil production platforms that varied in their oil-water separation processes, fluid recycling practices, and history of microbially influenced corrosion (MIC). Microbial diversity was evaluated by 16S rRNA gene sequencing, and numbers of total bacteria, archaea, and sulfate-reducing bacteria (SRB) were estimated by qPCR...
June 8, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28594833/diet-and-trophic-ecology-of-the-tiger-shark-galeocerdo-cuvier-from-south-african-waters
#15
Matthew L Dicken, Nigel E Hussey, Heather M Christiansen, Malcolm J Smale, Nomfundo Nkabi, Geremy Cliff, Sabine P Wintner
Knowledge of the diet and trophic ecology of apex predators is key for the implementation of effective ecosystem as well as species-based management initiatives. Using a combination of stomach content data and stable isotope analysis (δ15N and δ13C) the current study provides information on size-based and sex-specific variations in diet, trophic position (TP) and foraging habitat of tiger sharks (Galeocerdo cuvier) caught in the KwaZulu-Natal Sharks Board bather protection program. This study presents the longest time-series and most detailed analysis of stomach content data for G...
2017: PloS One
https://www.readbyqxmd.com/read/28592668/nineteenth-century-collapse-of-a-benthic-marine-ecosystem-on-the-open-continental-shelf
#16
Adam Tomašových, Susan M Kidwell
The soft-sediment seafloor of the open continental shelf is among the least-known biomes on Earth, despite its high diversity and importance to fisheries and biogeochemical cycling. Abundant dead shells of epifaunal suspension-feeding terebratulid brachiopods (Laqueus) and scallops on the now-muddy mainland continental shelf of southern California reveal the recent, previously unsuspected extirpation of an extensive offshore shell-gravel ecosystem, evidently driven by anthropogenic siltation. Living populations of attached epifauna, which formerly existed in a middle- and outer-shelf mosaic with patches of trophically diverse muds, are restricted today to rocky seafloor along the shelf edge and to the sandier shelves of offshore islands...
June 14, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28588261/persistent-effects-of-the-yellow-river-on-the-chinese-marginal-seas-began-at-least-880%C3%A2-ka-ago
#17
Zhengquan Yao, Xuefa Shi, Shuqing Qiao, Qingsong Liu, Selvaraj Kandasamy, Jianxing Liu, Yanguang Liu, Jihua Liu, Xisheng Fang, Jingjing Gao, Yanguang Dou
The Yellow River (or Huanghe and also known as China's Sorrow in ancient times), with the highest sediment load in the world, provides a key link between continental erosion and sediment accumulation in the western Pacific Ocean. However, the exact age of its influence on the marginal sea is highly controversial and uncertain. Here we present high-resolution records of clay minerals and lanthanum to samarium (La/Sm) ratio spanning the past ~1 million years (Myr) from the Bohai and Yellow Seas, the potential sedimentary sinks of the Yellow River...
June 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28584081/postglacial-response-of-arctic-ocean-gas-hydrates-to-climatic-amelioration
#18
Pavel Serov, Sunil Vadakkepuliyambatta, Jürgen Mienert, Henry Patton, Alexey Portnov, Anna Silyakova, Giuliana Panieri, Michael L Carroll, JoLynn Carroll, Karin Andreassen, Alun Hubbard
Seafloor methane release due to the thermal dissociation of gas hydrates is pervasive across the continental margins of the Arctic Ocean. Furthermore, there is increasing awareness that shallow hydrate-related methane seeps have appeared due to enhanced warming of Arctic Ocean bottom water during the last century. Although it has been argued that a gas hydrate gun could trigger abrupt climate change, the processes and rates of subsurface/atmospheric natural gas exchange remain uncertain. Here we investigate the dynamics between gas hydrate stability and environmental changes from the height of the last glaciation through to the present day...
June 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28578670/-location-is-surprisingly-a-lot-more-important-than-you-think-a-critical-thematic-analysis-of-push-and-pull-factor-messaging-used-on-caribbean-offshore-medical-school-websites
#19
Jeffrey Morgan, Valorie A Crooks, Carla Jackie Sampson, Jeremy Snyder
BACKGROUND: Offshore medical schools are for-profit, private enterprises located in the Caribbean that provide undergraduate medical education to students who must leave the region for postgraduate training and also typically to practice. This growing industry attracts many medical students from the US and Canada who wish to return home to practice medicine. After graduation, international medical graduates can encounter challenges obtaining residency placements and can face other barriers related to practice...
June 2, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28577383/transport-of-terrigenous-polycyclic-aromatic-hydrocarbons-affected-by-the-coastal-upwelling-in-the-northwestern-coast-of-south-china-sea
#20
Miaolei Ya, Yuling Wu, Yongyu Li, Xinhong Wang
Coastal upwelling prevails in the coast of Hainan Island, the northern South China Sea (SCS) during summer. We studied the influences of the upwelling on the horizontal and vertical transport of terrigenous polycyclic aromatic hydrocarbons (PAHs). PAHs in dissolved and suspended particulate phase of water samples were determined in the upper (depth < 1 m) and water column (depth > 10 m). PAH levels decreased sharply from inshore to offshore to open sea. The results showed that terrestrial input was the main source of coastal PAHs...
May 31, 2017: Environmental Pollution
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