532,626 research outputs found

    University of Maryland Eastern Shore

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    Found in Princess Anne, MD, UMES offers students the opportunity to earn a BS in Marine Science and/or an MS in several disciplines of Marine Sciences. A five year program is also available where students graduate with a BS and MS in Marine Sciences. Educational levels: High school, Undergraduate lower division, Undergraduate upper division

    Checking in With… Marine Biology Alumnus Bill Geraghty ’78

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    Oyster gardening initiative prompts memories from longtime supporter of Marine and Natural Sciences

    Kiel Data Management Infrastructure for Marine Sciences

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    Impact of climate induced glacial melting on coastal marine systems in the Western Antarctic Peninsula region

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    IMCOAST is an international research program that features a multidisciplinary approach involving geo and biological sciences, field investigations, remote sensing and modeling and knowledge into the hydrographical and biological history of the marine coastal ecosystems of the Western Antarctic Peninsula region

    Dark biological superoxide production as a significant flux and sink of marine dissolved oxygen

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    © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Sutherland, K. M., Wankel, S. D., & Hansel, C. M. Dark biological superoxide production as a significant flux and sink of marine dissolved oxygen. Proceedings of the National Academy of Sciences of the United States of America, 117(7), (2020): 3433-3439, doi:10.1073/pnas.1912313117.The balance between sources and sinks of molecular oxygen in the oceans has greatly impacted the composition of Earth’s atmosphere since the evolution of oxygenic photosynthesis, thereby exerting key influence on Earth’s climate and the redox state of (sub)surface Earth. The canonical source and sink terms of the marine oxygen budget include photosynthesis, respiration, photorespiration, the Mehler reaction, and other smaller terms. However, recent advances in understanding cryptic oxygen cycling, namely the ubiquitous one-electron reduction of O2 to superoxide by microorganisms outside the cell, remains unexplored as a potential player in global oxygen dynamics. Here we show that dark extracellular superoxide production by marine microbes represents a previously unconsidered global oxygen flux and sink comparable in magnitude to other key terms. We estimate that extracellular superoxide production represents a gross oxygen sink comprising about a third of marine gross oxygen production, and a net oxygen sink amounting to 15 to 50% of that. We further demonstrate that this total marine dark extracellular superoxide flux is consistent with concentrations of superoxide in marine environments. These findings underscore prolific marine sources of reactive oxygen species and a complex and dynamic oxygen cycle in which oxygen consumption and corresponding carbon oxidation are not necessarily confined to cell membranes or exclusively related to respiration. This revised model of the marine oxygen cycle will ultimately allow for greater reconciliation among estimates of primary production and respiration and a greater mechanistic understanding of redox cycling in the ocean.This work was supported by NASA Earth and Space Science Fellowship NNX15AR62H to K.M.S., NASA Exobiology grant NNX15AM04G to S.D.W. and C.M.H., and NSF Division of Ocean Sciences grant 1355720 to C.M.H. This research was further supported in part by Hanse-Wissenschaftskolleg Institute of Advanced Study fellowships to C.M.H. and S.D.W. We thank Danielle Hicks for assistance with figures and Community Earth Systems Model (CESM) Large Ensemble Project for the availability and use of its data product. The CESM project is primarily supported by the NSF

    School of Marine Sciences / Darling Marine Center

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    Over the last six years, the University of Maine has made an unprecedented investment in its marine laboratory, the Darling Marine Center to benefit both University faculty and visiting researchers and their students. Facility improvements include many new laboratory and offices spaces, more research instrumentation, and basic support facilities such as a dining hall and new classrooms. The inauguration of a Visiting Investigation Program in 1991, the expansion of educational offerings, and the growth of a large undergraduate internship program, have resulted in a population explosion that shows no sign of abating. To set priorities for improvements, the University has involved visiting investigators and visiting out-of-state colleges in facility planning. Based on their recommendation, housing has been targeted as the greatest facility weakness. The Center\u27s housing is primitive, overcrowed, and woefully inadequate and this deficiency is restricting the growth of both educational and research programs that impact a growing community of visiting faculty and students. The University\u27s Department of Environmental Health & Safety has issued unfavorable reports on the status of much of the Center\u27s housing, mostly due to inadequate fire protection and ADA- access. Most housing is of cottage construction and is restricted to summer use. Some housing lacks both heat and running water. In order to temporarily meet housing demand, every available space has been converted to bunk space throughout 11 separate building. Due to the age and condition of many of these structures, modernization would be largely cost prohibitive. While the Center now has beds for 60 people during the warm weathers months, year-round housing will currently accommodate only 18 students. The Center\u27s growing educational and Visiting Investigator programs are being severely hindered by this housing shortage, resulting in schedule juggling and restrictions on the number of individual s and visiting college classes that can work on site at any given time. In addition, the dining hall, built in 1992, was designed to feed 35 people at a time but now must accommodate twice that number. 20-room dormitory to house visiting faculty and students year round will be constructed. Two previous FSML facility improvements awards to the University have been responsible for stimulating the number of visiting investigators to the Darling Center and making their visits more productive. In addition, the awards have helped immeasurably to encourage additional investments by the University and by local, citizens who support the Center through their private donations

    Research on Marine Sciences under Core University Marine Science Program in the Period of 2001-2005 : The Bibliometrics Approach

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    This research aims to analyze the contribution of collaboration research under Core University Marine Science Program sponsored by Japan Society for Promotion of Sciences (JSPS) over a period of 2001-2005. The data were papers of JSPS seminars. We used co-word technique of bibliometrics methods to identify the research topics. Then we calculated which topics are core and prominence levels based on method of Sujit Battarcharja and Moh’d Taiyab Rashid Khan. In-depth interviews were also carried out to explore problems on Indonesian marine research besides getting confirmation, comments and ideas related to the result of bibliometrics analysis. The informants were experts in marine science from a research institution, a government ministry, and a university. The results of this study could be employed to evaluate the research collaboration program between LIPI and Japanese institutions especially under JSPS program in the future

    Biology/Marine Sciences (BIMS)

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