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Articles 2191 - 2220 of 2984
Full-Text Articles in Entire DC Network
Measurement Uncertainty Associated With Shipboard Sample Collection And Filtration For The Determination Of The Concentration Of Iron In Seawater, Robert Clough, Geerke H. Floor, Christophe R. Quétel, Angela Milne, Maeve C. Lohan, Paul J. Worsfold
Measurement Uncertainty Associated With Shipboard Sample Collection And Filtration For The Determination Of The Concentration Of Iron In Seawater, Robert Clough, Geerke H. Floor, Christophe R. Quétel, Angela Milne, Maeve C. Lohan, Paul J. Worsfold
School of Geography, Earth and Environmental Sciences
No abstract provided.
Response To Gottesfeld And Jacobs 2016, Andrew Turner, Emily R. Kearl, Kevin R. Solman
Response To Gottesfeld And Jacobs 2016, Andrew Turner, Emily R. Kearl, Kevin R. Solman
School of Geography, Earth and Environmental Sciences
No abstract provided.
Variability In Drift Ice Export From The Arctic Ocean To The North Icelandic Shelf Over The Last 8000 Years: A Multi-Proxy Evaluation, Patricia Cabedo-Sanz, Simon T. Belt, Anne E. Jennings, John T. Andrews, Áslaug Geirsdóttir
Variability In Drift Ice Export From The Arctic Ocean To The North Icelandic Shelf Over The Last 8000 Years: A Multi-Proxy Evaluation, Patricia Cabedo-Sanz, Simon T. Belt, Anne E. Jennings, John T. Andrews, Áslaug Geirsdóttir
School of Geography, Earth and Environmental Sciences
No abstract provided.
Predicting Bee Community Responses To Land-Use Changes: Effects Of Geographic And Taxonomic Biases, Palma A De, Stefan Abrahamczyk, Marcelo A. Aizen, Matthias Albrecht, Yves Basset, Adam Bates, Robin J. Blake, Céline Boutin, Rob Bugter, Stuart Connop, Leopoldo Cruz-López, Saul A. Cunningham, Ben Darvill, Tim Diekötter, Silvia Dorn, Nicola Downing, Martin H. Entling, Nina Farwig, Antonio Felicioli, Steven J. Fonte, Robert Fowler, Markus Franzén, Dave Goulson, Ingo Grass, Mick E. Hanley, Stephen D. Hendrix, Farina Herrmann, Felix Herzog, Andrea Holzschuh, Birgit Jauker, Michael Kessler, M. E. Knight, Andreas Kruess, Patrick Lavelle, Féon V Le, Pia Lentini, Louise A. Malone, Jon Marshall, Eliana Martínez Pachón, Quinn S. Mcfrederick, Carolina L. Morales, Sonja Mudri-Stojnic, Guiomar Nates-Parra, Sven G. Nilsson, Erik Öckinger, Lynne Osgathorpe, Alejandro Parra-H, Carlos A. Peres, Anna S. Persson, Theodora Petanidou, Katja Poveda, Eileen F. Power, Marino Quaranta, Carolina Quintero, Romina Rader, Miriam H. Richards, Tai Roulston, Laurent Rousseau, Jonathan P. Sadler, Ulrika Samnegård, Nancy A. Schellhorn, Christof Schüepp, Oliver Schweiger, Allan H. Smith-Pardo, Ingolf Steffan-Dewenter, Jane C. Stout, Rebecca K. Tonietto, Teja Tscharntke, Jason M. Tylianakis, Hans A.F. Verboven, Carlos H. Vergara, Jort Verhulst, Catrin Westphal, Hyung Joo Yoon, Andy Purvis
Predicting Bee Community Responses To Land-Use Changes: Effects Of Geographic And Taxonomic Biases, Palma A De, Stefan Abrahamczyk, Marcelo A. Aizen, Matthias Albrecht, Yves Basset, Adam Bates, Robin J. Blake, Céline Boutin, Rob Bugter, Stuart Connop, Leopoldo Cruz-López, Saul A. Cunningham, Ben Darvill, Tim Diekötter, Silvia Dorn, Nicola Downing, Martin H. Entling, Nina Farwig, Antonio Felicioli, Steven J. Fonte, Robert Fowler, Markus Franzén, Dave Goulson, Ingo Grass, Mick E. Hanley, Stephen D. Hendrix, Farina Herrmann, Felix Herzog, Andrea Holzschuh, Birgit Jauker, Michael Kessler, M. E. Knight, Andreas Kruess, Patrick Lavelle, Féon V Le, Pia Lentini, Louise A. Malone, Jon Marshall, Eliana Martínez Pachón, Quinn S. Mcfrederick, Carolina L. Morales, Sonja Mudri-Stojnic, Guiomar Nates-Parra, Sven G. Nilsson, Erik Öckinger, Lynne Osgathorpe, Alejandro Parra-H, Carlos A. Peres, Anna S. Persson, Theodora Petanidou, Katja Poveda, Eileen F. Power, Marino Quaranta, Carolina Quintero, Romina Rader, Miriam H. Richards, Tai Roulston, Laurent Rousseau, Jonathan P. Sadler, Ulrika Samnegård, Nancy A. Schellhorn, Christof Schüepp, Oliver Schweiger, Allan H. Smith-Pardo, Ingolf Steffan-Dewenter, Jane C. Stout, Rebecca K. Tonietto, Teja Tscharntke, Jason M. Tylianakis, Hans A.F. Verboven, Carlos H. Vergara, Jort Verhulst, Catrin Westphal, Hyung Joo Yoon, Andy Purvis
School of Biological and Marine Sciences
No abstract provided.
Brexit: Surname Diversity And Voting Patterns, Mario Cortina Borja, Julian Stander, Valle L Dalla
Brexit: Surname Diversity And Voting Patterns, Mario Cortina Borja, Julian Stander, Valle L Dalla
School of Engineering, Computing and Mathematics
No abstract provided.
Reconstructing Ancient Mediterranean Crossroads In Deronectes Diving Beetles, David García-Vázquez, David T. Bilton, Rocío Alonso, Cesar J. Benetti, Josefina Garrido, Luis F. Valladares, Ignacio Ribera
Reconstructing Ancient Mediterranean Crossroads In Deronectes Diving Beetles, David García-Vázquez, David T. Bilton, Rocío Alonso, Cesar J. Benetti, Josefina Garrido, Luis F. Valladares, Ignacio Ribera
School of Biological and Marine Sciences
No abstract provided.
Bird Pollinators, Seed Storage And Cockatoo Granivores Explain Large Woody Fruits As Best Seed Defense In Hakea, Byron B. Lamont, Mick E. Hanley, Philip K. Groom, Tianhua He
Bird Pollinators, Seed Storage And Cockatoo Granivores Explain Large Woody Fruits As Best Seed Defense In Hakea, Byron B. Lamont, Mick E. Hanley, Philip K. Groom, Tianhua He
School of Biological and Marine Sciences
Nutrient-impoverished soils with severe summer drought and frequent fire typify many Mediterranean-type regions of the world. Such conditions limit seed production and restrict opportunities for seedling recruitment making protection from granivores paramount. Our focus was on Hakea, a genus of shrubs widespread in southwestern Australia, whose nutritious seeds are targeted by strong-billed cockatoos. We assessed 56 Hakea species for cockatoo damage in 150 populations spread over 900 km in relation to traits expected to deter avian granivory: dense spiny foliage; large, woody fruits; fruit crypsis via leaf mimicry and shielding; low seed stores; and fruit clustering. We tested hypothesises centred …
Spatially Resolved Mid-Ir Spectra From Meteorites; Linking Composition, Crystallographic Orientation And Spectra On The Micro-Scale, Nr Stephen
School of Geography, Earth and Environmental Sciences
Spectral data from spacecraft are often used to infer the surface mineralogy of a body by unmixing the bulk spectrum into constituent components and comparing these to spectral databases [e.g. 1, 2]. It is widely accepted that mineral spectra derived from meteorites can provide a more accurate match to their parent body than terrestrial databases alone [3, 4]. Recent work has sought to resolve mid-IR spectra in Martian pyroxenes in terms of crystallographic orientation [3] and zonation [5], and more generally for Martian meteorites using the increased spatial resolution of synchrotron-source µFT-IR [6]. Linking these studies together, one can extract …
Estimates Of Global, Regional, And National Incidence, Prevalence, And Mortality Of Hiv, 1980–2015: The Global Burden Of Disease Study 2015, Gbd 2015 Hiv Collaborators
Estimates Of Global, Regional, And National Incidence, Prevalence, And Mortality Of Hiv, 1980–2015: The Global Burden Of Disease Study 2015, Gbd 2015 Hiv Collaborators
Peninsula Medical School
BACKGROUND: Timely assessment of the burden of HIV/AIDS is essential for policy setting and programme evaluation. In this report from the Global Burden of Disease Study 2015 (GBD 2015), we provide national estimates of levels and trends of HIV/AIDS incidence, prevalence, coverage of antiretroviral therapy (ART), and mortality for 195 countries and territories from 1980 to 2015. METHODS: For countries without high-quality vital registration data, we estimated prevalence and incidence with data from antenatal care clinics and population-based seroprevalence surveys, and with assumptions by age and sex on initial CD4 distribution at infection, CD4 progression rates (probability of progression from …
Functional And Territorial Jurisdictions: Regulating A Globalized Shipping Industry, Ke Howell, S Bhattacharya
Functional And Territorial Jurisdictions: Regulating A Globalized Shipping Industry, Ke Howell, S Bhattacharya
Plymouth Business School
Globalization undermines the effectiveness of state-based regulation and implies the need for alternative mechanisms. Regulatory control exercised by international or European institutions provides scope for understanding functionalist rationales when comprehending the construction of ‘ocean space’. This paper contributes to appreciating effective functional forms of regulation by investigating the enforcement practices and control in the international maritime tanker industry. Through a study of shipping we explore the extent that functional regulation has been implemented and how this may inform regulatory formation in other industries/sectors affected by global variables. In general, the study suggests that in the context of the shipping industry …
Geometry Of Holocene Tidal Notches – Sea Level Markers At Perachora Peninsula, Gulf Of Corinth, Greece, S Schneiderwind, M Kázmér, S Boulton, I Papanikolaou, K Reicherter
Geometry Of Holocene Tidal Notches – Sea Level Markers At Perachora Peninsula, Gulf Of Corinth, Greece, S Schneiderwind, M Kázmér, S Boulton, I Papanikolaou, K Reicherter
School of Geography, Earth and Environmental Sciences
Tidal notches are a generally accepted sea level indicator that, when different from mean sea level, witness tectonic activity at or near coastlines. However, how to infer related information is controversial since tectonic uplift from a single seismic event is not likely to exceed several decimetres. High resolution laser scanning offers the availability of close-up views on exposures and to detect evidence for multiple sea level indicators in between major emergence. Statistically representative profiles along exposure were analysed in order to prove for already described tidal notches and to highlight similar shapes in consistent geometries along coastal cliffs of Perachora …
Using Video Games For Volcanic Hazard Education And Communication: An Assessment Of The Method And Preliminary Results, Lara Mani, Paul D. Cole, Iain Stewart
Using Video Games For Volcanic Hazard Education And Communication: An Assessment Of The Method And Preliminary Results, Lara Mani, Paul D. Cole, Iain Stewart
School of Geography, Earth and Environmental Sciences
Abstract. This paper presents the findings from a study aimed at understanding whether video games (or serious games) can be effective in enhancing volcanic hazard education and communication. Using the eastern Caribbean island of St. Vincent, we have developed a video game – St. Vincent's Volcano – for use in existing volcano education and outreach sessions. Its twin aims are to improve residents' knowledge of potential future eruptive hazards (ash fall, pyroclastic flows and lahars) and to integrate traditional methods of education in a more interactive manner. Here, we discuss the process of game development including concept design through to …
Characterization Of The In Situ Magnetic Architecture Of Oceanic Crust (Hess Deep) Using Near-Source Vector Magnetic Data, M Tominaga, Ma Tivey, Cj Macleod, A Morris, Cj Lissenberg, Dj Shillington, V Ferrini
Characterization Of The In Situ Magnetic Architecture Of Oceanic Crust (Hess Deep) Using Near-Source Vector Magnetic Data, M Tominaga, Ma Tivey, Cj Macleod, A Morris, Cj Lissenberg, Dj Shillington, V Ferrini
School of Geography, Earth and Environmental Sciences
No abstract provided.
Natural Connections Demonstration Project, 2012- 2016: Final Report, S Waite, R Passy, M Gilchrist, A Hunt, I Blackwell
Natural Connections Demonstration Project, 2012- 2016: Final Report, S Waite, R Passy, M Gilchrist, A Hunt, I Blackwell
Plymouth Institute of Education
This report presents the key findings from the Natural Connections Demonstration Project, that aimed to encourage teachers to take curricular learning outdoors. The project was commissioned by DEFRA, Natural England and Historic England, and delivered by a team at Plymouth University. 125 schools contributed to the evaluation which found that: 1. schools most likely to engage with outdoor learning displayed strong leadership and were open-minded about trying new things 2. schools reported a statistically-significant increase in the amount of time spent on outdoor learning activity across the project 3. Schools adopted many different models of outdoor learning 4. Schools invested …
Restoration Of The External Scandinavian Caledonides, A. Hugh N. Rice, Mark W. Anderson
Restoration Of The External Scandinavian Caledonides, A. Hugh N. Rice, Mark W. Anderson
School of Geography, Earth and Environmental Sciences
Three models are evaluated for restoring basement rocks coring tectonic windows (Window-Basement) in the Scandinavian Caledonides; parautochthonous (Model I) and allochthonous (models II/III), with initial imbrication of the Window-Basement post-dating or pre-dating, respectively, that in the external imbricate zone (Lower Allochthon). In Model I, the Window-Basement comes from the eastern margin of the basin now imbricated into the Lower Allochthon, while in models II/III it comes from the western margin. In Model II, the Window-Basement formed a basement-high between Tonian and Cryogenian sediments imbricated into the Middle and Lower allochthons; in Model III deposition of the Lower Allochthon sediments commenced …
The Winter Olympics: Driving Urban Change, 1924-2022, Sj Essex, Jiska De Groot
The Winter Olympics: Driving Urban Change, 1924-2022, Sj Essex, Jiska De Groot
School of Geography, Earth and Environmental Sciences
No abstract provided.
Police Funding Arrangements In Engand And Wales: Report To The Nrcn, Ajs Gibson, S Asthana
Police Funding Arrangements In Engand And Wales: Report To The Nrcn, Ajs Gibson, S Asthana
Peninsula Medical School
No abstract provided.
Atlanta Ariejansseni, A New Species Of Shelled Heteropod From The Southern Subtropical Convergence Zone (Gastropoda, Pterotracheoidea), D Wall-Palmer, Ak Burridge, Ktca Peijnenburg
Atlanta Ariejansseni, A New Species Of Shelled Heteropod From The Southern Subtropical Convergence Zone (Gastropoda, Pterotracheoidea), D Wall-Palmer, Ak Burridge, Ktca Peijnenburg
School of Geography, Earth and Environmental Sciences
The Atlantidae (shelled heteropods) is a family of microscopic aragonite shelled holoplanktonic gastropods with a wide biogeographical distribution in tropical, sub-tropical and temperate waters. The aragonite shell and surface ocean habitat of the atlantids makes them particularly susceptible to ocean acidification and ocean warming, and atlantids are likely to be useful indicators of these changes. However, we still lack fundamental information on their taxonomy and biogeography, which is essential for monitoring the effects of a changing ocean. Integrated morphological and molecular approaches to taxonomy have been employed to improve the assessment of species boundaries, which give a more accurate picture …
Seasonal Sea Ice Variability In Eastern Fram Strait Over The Last 2000 Years, P Cabedo-Sanz, St Belt
Seasonal Sea Ice Variability In Eastern Fram Strait Over The Last 2000 Years, P Cabedo-Sanz, St Belt
School of Geography, Earth and Environmental Sciences
We present a high-resolution (ca. 50 years) biomarker-based reconstruction of seasonal sea ice conditions for the West Svalbard continental margin covering the last ca. 2k years. Our reconstruction is based on the distributions of sea ice algal (IP25) and phytoplankton (brassicasterol and HBI III) lipids in marine sediment core MSM5/5-712-1 retrieved in 2007. The individual and combined (PIP25) temporal profiles, together with estimates of spring sea ice concentration [SpSIC (%)] based on a recent calibration, suggest that sea ice conditions during the interval ca. 50–1700 AD may not have been as variable as described in previous reconstructions, with SpSIC generally …
The Comparison Of Friedel-Crafts Alkylation And Acylation As A Means To Synthesise Alkyl Xylenes, Penny Whalley
The Comparison Of Friedel-Crafts Alkylation And Acylation As A Means To Synthesise Alkyl Xylenes, Penny Whalley
The Plymouth Student Scientist
The aim of this project was to synthesise and characterise an alkyl xylene using both a Friedel-Crafts alkylation and a Friedel-Crafts acylation. The literature stated that whilst alkylation raised many issues with polyalkylation, transalkylation, dealkylation and rearrangement of the electrophile, acylation with subsequent reduction of the carbonyl provided a far less problematic route. Firstly, Friedel-Crafts alkylation of m-xylene was performed using t-butyl chloride. The product was purified by vacuum distillation and rotary evaporation. Analysis using IR, GC-FID, GC-MS and NMR allowed the conclusion of a 1,3,5-trisubstituted benzene product. Secondly, Friedel-Crafts acylation of m-xylene was performed using butyryl chloride. Analysis using …
Geomorphic And Geological Constraints On The Active Normal Faulting Of The Gediz (Alaşehir) Graben, Western Turkey., E. Kent, S. J. Boulton, I. S. Stewart, A. C. Whittaker, Mc Alcicek
Geomorphic And Geological Constraints On The Active Normal Faulting Of The Gediz (Alaşehir) Graben, Western Turkey., E. Kent, S. J. Boulton, I. S. Stewart, A. C. Whittaker, Mc Alcicek
School of Geography, Earth and Environmental Sciences
The Gediz (Alaşehir) Graben is located in the highly tectonically active region of Western Turkey. Extension due to regional geodynamic controls has resulted in a broadly two-phase evolution of the graben; firstly, low-angle normal faulting relating to the exhumation of the Menderes Massif metamorphic core complex took place between 16 - 2.6 Ma. Secondly, high-angle normal faulting initiated ~ 2 Ma forming the Gediz and other E-W trending grabens in the region. Here we quantify the throw rate along the fault array over the last 2.6, 2 and 0.7 Ma using structural and geological constraints, along with analysis of topographic …
Impact Of Uk And Australian Transnational Higher Education In Malaysia, N Arunasalam
Impact Of Uk And Australian Transnational Higher Education In Malaysia, N Arunasalam
School of Nursing and Midwifery
This study investigated outcomes of the provision, by one Australian and two U.K. universities, of bridging programs that allow registered Malaysian nurses to upgrade their diploma qualifications to degree level. The study was informed by current literature on Transnational Higher Education (TNHE) programs. Not sufficiently explored in the literature are nurses’ lived experiences of such programs and how far they apply TNHE theory in clinical practice. Using hermeneutic phenomenology, interviews were conducted with 18 Malaysian nurses who completed these TNHE programs. The data were analyzed using thematic analysis. The findings were that personal and professional development did occur but it …
Farm Characteristics And Farmer Perceptions Associated With Bovine Tuberculosis Incidents In Areas Of Emerging Endemic Spread, J. M. Broughan, D. Maye, P. Carmody, L. A. Brunton, A. Ashton, W. Wint, N. Alexander, R. Naylor, K. Ward, A. V. Goodchild, S. Hinchliffe, R. D. Eglin, P. Upton, R. Nicholson, G. Enticott
Farm Characteristics And Farmer Perceptions Associated With Bovine Tuberculosis Incidents In Areas Of Emerging Endemic Spread, J. M. Broughan, D. Maye, P. Carmody, L. A. Brunton, A. Ashton, W. Wint, N. Alexander, R. Naylor, K. Ward, A. V. Goodchild, S. Hinchliffe, R. D. Eglin, P. Upton, R. Nicholson, G. Enticott
School of Geography, Earth and Environmental Sciences
No abstract provided.
Medium Moderates The Message. How Users Adjust Their Communication Trajectories To Different Media In Collaborative Task Solving, K Lisiecka, A Rychwalska, K Samson, K Łucznik, Et Al
Medium Moderates The Message. How Users Adjust Their Communication Trajectories To Different Media In Collaborative Task Solving, K Lisiecka, A Rychwalska, K Samson, K Łucznik, Et Al
School of Geography, Earth and Environmental Sciences
Rapid development of information and communications technologies (ICT) has triggered profound changes in how people manage their social contacts in both informal and professional contexts. ICT mediated communication may seem limited in possibilities compared to face-to-face encounters, but research shows that puzzlingly often it can be just as effective and satisfactory. We posit that ICT users employ specific communication strategies adapted to particular communication channels, which results in a comparable effectiveness of communication. In order to maintain a satisfactory level of conversational intelligibility they calibrate the content of their messages to a given medium's richness and adjust the whole conversation …
After The Ice Age: The Impact Of Post-Glacial Dispersal On The Phylogeography Of A Small Mammal, Muscardinus Avellanarius, Fraser J. Combe, Jonathan S. Ellis, Kirsty L. Lloyd, Bradley Cain, C. Philip Wheater, W. Edwin Harris
After The Ice Age: The Impact Of Post-Glacial Dispersal On The Phylogeography Of A Small Mammal, Muscardinus Avellanarius, Fraser J. Combe, Jonathan S. Ellis, Kirsty L. Lloyd, Bradley Cain, C. Philip Wheater, W. Edwin Harris
School of Biological and Marine Sciences
No abstract provided.
Measurements Of Hydrogen, Oxygen And Carbon Isotope Variability In Sphagnum Moss Along A Micro-Topographical Gradient In A Southern Patagonian Peatland, N. J. Loader, F. A. Street-Perrott, D. Mauquoy, T. P. Roland, Bellen S Van, T. J. Daley, D. Davies, P. D.M. Hughes, V. O. Pancotto, G. H.F. Young, M. J. Amesbury, D. J. Charman, G. Mallon, Z. C. Yu
Measurements Of Hydrogen, Oxygen And Carbon Isotope Variability In Sphagnum Moss Along A Micro-Topographical Gradient In A Southern Patagonian Peatland, N. J. Loader, F. A. Street-Perrott, D. Mauquoy, T. P. Roland, Bellen S Van, T. J. Daley, D. Davies, P. D.M. Hughes, V. O. Pancotto, G. H.F. Young, M. J. Amesbury, D. J. Charman, G. Mallon, Z. C. Yu
School of Geography, Earth and Environmental Sciences
Peat archives offer a diverse range of physical and chemical proxies from which it is possible to study past environmental and ecological changes. Direct numerical calibration and verification is difficult so process-based and mechanistic studies are therefore required to establish and quantify links between environmental changes and their associated proxy-responses. Traditional ‘space-for-time’ calibrations provide a solution to this calibration problem, but are often unable to isolate a single environmental variable from other potentially confounding variables. In this study, we explored the potential of a site-specific ‘space-for-time’ approach applied to a hummock-hollow transect on an ombrotrophic raised bog in Patagonia, southern …
The 8.2-Ka Bp Event In North-Eastern North America: First Combined Oxygen And Hydrogen Isotopic Data From Peat In Newfoundland, T. J. Daley, K. E. Barber, P. D.M. Hughes, N. J. Loader, M. Leuenberger, F. A. Street-Perrott
The 8.2-Ka Bp Event In North-Eastern North America: First Combined Oxygen And Hydrogen Isotopic Data From Peat In Newfoundland, T. J. Daley, K. E. Barber, P. D.M. Hughes, N. J. Loader, M. Leuenberger, F. A. Street-Perrott
School of Geography, Earth and Environmental Sciences
No abstract provided.
The Relationship Between Eruptive Activity, Flank Collapse, And Sea Level At Volcanic Islands: A Long-Term (>1 Ma) Record Offshore Montserrat, Lesser Antilles, M Coussens, D Wall-Palmer, Pj Talling, Et Al
The Relationship Between Eruptive Activity, Flank Collapse, And Sea Level At Volcanic Islands: A Long-Term (>1 Ma) Record Offshore Montserrat, Lesser Antilles, M Coussens, D Wall-Palmer, Pj Talling, Et Al
School of Geography, Earth and Environmental Sciences
Hole U1395B, drilled southeast of Montserrat during Integrated Ocean Drilling Program Expedition 340, provides a long (>1 Ma) and detailed record of eruptive and mass-wasting events (>130 discrete events). This record can be used to explore the temporal evolution in volcanic activity and landslides at an arc volcano. Analysis of tephra fall and volcaniclastic turbidite deposits in the drill cores reveals three heightened periods of volcanic activity on the island of Montserrat (~930 to ~900 ka, ~810 to ~760 ka, and ~190 to ~120 ka) that coincide with periods of increased volcano instability and mass-wasting. The youngest of …
From Ether To Acid: A Plausible Degradation Pathway Of Glycerol Dialkyl Glycerol Tetraethers, Xiao Lei Liu, Daniel Birgel, Felix J. Elling, Paul A. Sutton, Julius S. Lipp, Rong Zhu, Chuanlun Zhang, M Konneke, Jörn Peckmann, Steven J. Rowland, Roger E. Summons, Kai Uwe Hinrichs
From Ether To Acid: A Plausible Degradation Pathway Of Glycerol Dialkyl Glycerol Tetraethers, Xiao Lei Liu, Daniel Birgel, Felix J. Elling, Paul A. Sutton, Julius S. Lipp, Rong Zhu, Chuanlun Zhang, M Konneke, Jörn Peckmann, Steven J. Rowland, Roger E. Summons, Kai Uwe Hinrichs
School of Geography, Earth and Environmental Sciences
Glycerol dialkyl glycerol tetraethers (GDGTs) are ubiquitous microbial lipids with extensive demonstrated and potential roles as paleoenvironmental proxies. Despite the great attention they receive, comparatively little is known regarding their diagenetic fate. Putative degradation products of GDGTs, identified as hydroxyl and carboxyl derivatives, were detected in lipid extracts of marine sediment, seep carbonate, hot spring sediment and cells of the marine thaumarchaeon Nitrosopumilus maritimus. The distribution of GDGT degradation products in environmental samples suggests that both biotic and abiotic processes act as sinks for GDGTs. More than a hundred newly recognized degradation products afford a view of the stepwise degradation …
From Ether To Acid: A Plausible Degradation Pathway Of Glycerol Dialkyl Glycerol Tetraethers, X-L Liu, D Birgel, Fj Elling, Pa Sutton, Et Al
From Ether To Acid: A Plausible Degradation Pathway Of Glycerol Dialkyl Glycerol Tetraethers, X-L Liu, D Birgel, Fj Elling, Pa Sutton, Et Al
School of Geography, Earth and Environmental Sciences
Glycerol dialkyl glycerol tetraethers (GDGTs) are ubiquitous microbial lipids with extensive demonstrated and potential roles as paleoenvironmental proxies. Despite the great attention they receive, comparatively little is known regarding their diagenetic fate. Putative degradation products of GDGTs, identified as hydroxyl and carboxyl derivatives, were detected in lipid extracts of marine sediment, seep carbonate, hot spring sediment and cells of the marine thaumarchaeon Nitrosopumilus maritimus. The distribution of GDGT degradation products in environmental samples suggests that both biotic and abiotic processes act as sinks for GDGTs. More than a hundred newly recognized degradation products afford a view of the stepwise degradation …