Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Articles 1021 - 1050 of 1481

Full-Text Articles in Entire DC Network

Event Satisfaction And Behavioural Intentions: Examining The Impact Of The London 2012 Olympic Games On Participation In Sport, Graham Brown, Stephen Essex, Guy Assaker, Andrew Smith Mar 2017

Event Satisfaction And Behavioural Intentions: Examining The Impact Of The London 2012 Olympic Games On Participation In Sport, Graham Brown, Stephen Essex, Guy Assaker, Andrew Smith

School of Geography, Earth and Environmental Sciences

esearch question: Does event satisfaction influence future intentions to attend events and participate in sport? The research addressed this question by focussing on participation in swimming and the influence of watching the London 2012 Olympic Games; an event which sought to create a legacy of mass sport participation. Research methods: Surveys were conducted at the Olympic Aquatics Centre (n = 185) and at a Leisure Centre in Plymouth in south-west England (n = 135) making it possible to test for differences between people who experienced the London Olympic Games as a live event and those who watched the event on …


Agricultural Productivity Growth And The Role Of Capital In South Asia (1980–2013), A Anik, S Rahman, J Sarker Mar 2017

Agricultural Productivity Growth And The Role Of Capital In South Asia (1980–2013), A Anik, S Rahman, J Sarker

School of Geography, Earth and Environmental Sciences

The study assessed agricultural sustainability in South Asia (i.e., Bangladesh, Pakistan, India and Nepal) by computing multi-lateral multi-temporal Total Factor Productivity (TFP) indices and their six finer components (technical change, technical-, scale- and mix-efficiency changes, residual scale and residual mix-efficiency changes) and examined the role of capital in driving TFP growth covering a 34-year period (1980-2013). Results revealed that all countries sustained agricultural productivity growth at variable rates with Bangladesh experiencing highest rate estimated @1.05% p.a. followed by India (0.52%), Pakistan (0.38%) and Nepal (0.06% p.a.). There were little or no variation in technical and scale efficiency changes among the …


Krillbase: A Circumpolar Database Of Antarctic Krill And Salp Numerical Densities, 1926–2016, Angus Atkinson, Simeon L. Hill, Evgeny A. Pakhomov, Volker Siegel, Ricardo Anadon, Sanae Chiba, Kendra L. Daly, Rod Downie, Sophie Fielding, Peter Fretwell, Laura Gerrish, Graham W. Hosie, Mark J. Jessopp, So Kawaguchi, Bjørn A. Krafft, Valerie Loeb, Jun Nishikawa, Helen J. Peat, Christian S. Reiss, Robin M. Ross, Langdon B. Quetin, Katrin Schmidt, Deborah K. Steinberg, Roshni C. Subramaniam, Geraint A. Tarling, Peter Ward Mar 2017

Krillbase: A Circumpolar Database Of Antarctic Krill And Salp Numerical Densities, 1926–2016, Angus Atkinson, Simeon L. Hill, Evgeny A. Pakhomov, Volker Siegel, Ricardo Anadon, Sanae Chiba, Kendra L. Daly, Rod Downie, Sophie Fielding, Peter Fretwell, Laura Gerrish, Graham W. Hosie, Mark J. Jessopp, So Kawaguchi, Bjørn A. Krafft, Valerie Loeb, Jun Nishikawa, Helen J. Peat, Christian S. Reiss, Robin M. Ross, Langdon B. Quetin, Katrin Schmidt, Deborah K. Steinberg, Roshni C. Subramaniam, Geraint A. Tarling, Peter Ward

School of Geography, Earth and Environmental Sciences

Abstract. Antarctic krill (Euphausia superba) and salps are major macroplankton contributors to Southern Ocean food webs and krill are also fished commercially. Managing this fishery sustainably, against a backdrop of rapid regional climate change, requires information on distribution and time trends. Many data on the abundance of both taxa have been obtained from net sampling surveys since 1926, but much of this is stored in national archives, sometimes only in notebooks. In order to make these important data accessible we have collated available abundance data (numerical density, no. m−2) of postlarval E. superba and salp individual (multiple species, and whether …


Hydrothermal Cooling Of The Ocean Crust: Insights From Odp Hole 1256d, Michelle Harris, Rosalind M. Coggon, Martin Wood, Christopher E. Smith-Duque, Timothy J. Henstock, Damon A.H. Teagle Mar 2017

Hydrothermal Cooling Of The Ocean Crust: Insights From Odp Hole 1256d, Michelle Harris, Rosalind M. Coggon, Martin Wood, Christopher E. Smith-Duque, Timothy J. Henstock, Damon A.H. Teagle

School of Geography, Earth and Environmental Sciences

No abstract provided.


Rural Citizenship, Rb Yarwood Mar 2017

Rural Citizenship, Rb Yarwood

School of Geography, Earth and Environmental Sciences

No abstract provided.


Distributions Of The Arctic Sea Ice Biomarker Proxy Ip25 And Two Phytoplanktonic Biomarkers In Surface Sediments From West Svalbard, Lukas Smik, Simon T. Belt Mar 2017

Distributions Of The Arctic Sea Ice Biomarker Proxy Ip25 And Two Phytoplanktonic Biomarkers In Surface Sediments From West Svalbard, Lukas Smik, Simon T. Belt

School of Geography, Earth and Environmental Sciences

No abstract provided.


Crude Geopolitics: Territory And Governance In Post-Peak Oil Imaginaries, Nichola Harmer Mar 2017

Crude Geopolitics: Territory And Governance In Post-Peak Oil Imaginaries, Nichola Harmer

School of Geography, Earth and Environmental Sciences

No abstract provided.


Class Type Separation Of The Polar And Apolar Components Of Petroleum, William J. Robson, Paul A. Sutton, Paul Mccormack, Neil P. Chilcott, Steven J. Rowland Mar 2017

Class Type Separation Of The Polar And Apolar Components Of Petroleum, William J. Robson, Paul A. Sutton, Paul Mccormack, Neil P. Chilcott, Steven J. Rowland

School of Geography, Earth and Environmental Sciences

Identification of the heteroatom (nitrogen, sulfur, and oxygen)-containing compounds of petroleum is of key importance when considering industrial and environmental issues associated with crude oil production. The more commonly performed methods of crude oil fractionation are often insufficient in the extent to which they separate oils, not allowing defined “molecular” fractions to be obtained. Methods capable of performing a class type separation are uncommon and are often extensive and resource and time intensive. Here we report a method for the separation of crude oils into discrete compound classes. The method utilizes both ion exchange and normal phase chromatography to generate …


Particulate Phases Are Key In Controlling Dissolved Iron Concentrations In The (Sub)Tropical North Atlantic, Angela Milne, Christian Schlosser, Bronwyn D. Wake, Eric P. Achterberg, Rosie Chance, Alex R. Baker, Alex Forryan, Maeve C. Lohan Mar 2017

Particulate Phases Are Key In Controlling Dissolved Iron Concentrations In The (Sub)Tropical North Atlantic, Angela Milne, Christian Schlosser, Bronwyn D. Wake, Eric P. Achterberg, Rosie Chance, Alex R. Baker, Alex Forryan, Maeve C. Lohan

School of Geography, Earth and Environmental Sciences

No abstract provided.


Examining Student's Night-Time Activity Spaces: Identities, Performances And Transformations, Mark Holton Mar 2017

Examining Student's Night-Time Activity Spaces: Identities, Performances And Transformations, Mark Holton

School of Geography, Earth and Environmental Sciences

No abstract provided.


Climate, Agroecology And Socio-Economic Determinants Of Food Availability From Agriculture In Bangladesh, (1948–2008), S Rahman Mar 2017

Climate, Agroecology And Socio-Economic Determinants Of Food Availability From Agriculture In Bangladesh, (1948–2008), S Rahman

School of Geography, Earth and Environmental Sciences

The paper examines the impacts of prices, resources, technology, education, public investments, climatic variables and agroecology on Food Availability (FA) from domestic agriculture in Bangladesh using a panel data of 17 regions covering a 61-year period (1948–2008) by utilising a dynamic agricultural supply response framework and Generalised Methods of Moments (GMM) estimator. Results revealed that FA has increased at the rate of 1.32% p.a. with significant regional variations. Significant regional differences exist with respect to climatic variables, resources, Green Revolution (GR) technology and education. Among the output prices, rise in the prices of rice, vegetables and pulses significantly increase FA …


Creep Of Mafic Dykes Infiltrated By Melt In The Lower Continental Crust (Seiland Igneous Province, Norway), Alessandrini G Degli, L. Menegon, N. Malaspina, A. H. Dijkstra, M. W. Anderson Mar 2017

Creep Of Mafic Dykes Infiltrated By Melt In The Lower Continental Crust (Seiland Igneous Province, Norway), Alessandrini G Degli, L. Menegon, N. Malaspina, A. H. Dijkstra, M. W. Anderson

School of Geography, Earth and Environmental Sciences

No abstract provided.


Biomarker-Based H-Print Quantifies The Composition Of Mixed Sympagic And Pelagic Algae Consumed By Artemia Sp., Thomas A. Brown, Simon T. Belt Mar 2017

Biomarker-Based H-Print Quantifies The Composition Of Mixed Sympagic And Pelagic Algae Consumed By Artemia Sp., Thomas A. Brown, Simon T. Belt

School of Geography, Earth and Environmental Sciences

No abstract provided.


Drivers Of Production And Efficiency Of Onion Cultivation In Bangladesh, Ar Anik, Ma Salam, S Rahman Feb 2017

Drivers Of Production And Efficiency Of Onion Cultivation In Bangladesh, Ar Anik, Ma Salam, S Rahman

School of Geography, Earth and Environmental Sciences

The study identifies the drivers of production and technical efficiency in onion cultivation based on a survey of 300 farmers from three different major onion growing districts in Bangladesh by applying a stochastic production frontier approach. Results reveal that land is the most important driver of production (elasticity value 0.33) followed by labour (0.24) and seed (0.18). Use of modern seed significantly improves production. A constant returns to scale exists in onion production. The mean technical efficiency is estimated at 67% implying that output can be increased substantially by 49% by eliminating inefficiencies in production. Extension contact, use of recommended …


Stability Of Dissolved And Soluble Fe(Ii) In Shelf Sediment Pore Waters And Release To An Oxic Water Column, Jk Klar, Wb Homoky, Pj Statham, Aj Birchill, Et Al Feb 2017

Stability Of Dissolved And Soluble Fe(Ii) In Shelf Sediment Pore Waters And Release To An Oxic Water Column, Jk Klar, Wb Homoky, Pj Statham, Aj Birchill, Et Al

School of Geography, Earth and Environmental Sciences

Shelf sediments underlying temperate and oxic waters of the Celtic Sea (NW European Shelf) were found to have shallow oxygen penetrations depths from late spring to late summer (2.2-5.8 mm below seafloor) with the shallowest during/after the spring-bloom (mid-April to mid-May) when the organic carbon content was highest. Sediment porewater dissolved iron (dFe, <0.15 µm) mainly (>85%) consisted of Fe(II) and gradually increased from 0.4 to 15 µM at the sediment surface to ~100-170 µM at about 6 cm depth. During the late spring this Fe(II) was found to be mainly present as soluble Fe(II) (>85% sFe, <0.02 µm). Sub-surface dFe(II) maxima were enriched in light isotopes (d56Fe -2.0 to -1.5‰), which is attributed to dissimilatory iron reduction (DIR) during the bacterial decomposition of organic matter. As porewater Fe(II) was oxidised to insoluble Fe(III) in the surface sediment layer, residual Fe(II) was further enriched in light isotopes (down to -3.0‰). Ferrozine-reactive Fe(II) was found in surface porewaters and in overlying core top waters, and was highest in the late spring period. Shipboard experiments showed that depletion of bottom water oxygen in late spring can lead to a substantial release of Fe(II). Reoxygenation of bottom water caused this Fe(II) to be rapidly lost from solution, but residual dFe(II) and dFe(III) remained (12 and 33 nM) after >7 h. Iron(II) oxidation experiments …


Reciprocal Elucidation: A Student-Led Pedagogy In Multidisciplinary Undergraduate Research Conferences, H Walkington, J Hill, Pe Kneale Feb 2017

Reciprocal Elucidation: A Student-Led Pedagogy In Multidisciplinary Undergraduate Research Conferences, H Walkington, J Hill, Pe Kneale

School of Geography, Earth and Environmental Sciences

There is no previous study of the benefits of attending a national multidisciplinary conference dedicated to undergraduate researchers, despite the growing number of such conferences internationally. This paper addresses the gap in knowledge of the learning gains from these conferences, and reveals a student driven learning process, a multidisciplinary signature pedagogy. It presents the results of 90 in-depth interviews with student conference participants conducted over three consecutive years of a multidisciplinary National Conference of Undergraduate Research (2012–2014). This paper uniquely captures the student voice on their perceived learning gains from this experience. The results reveal that some students co-create a …


“It Was Amazing To See Our Projects Come To Life!” Developing Affective Learning During Geography Fieldwork Through Tropophilia, Mark Holton Feb 2017

“It Was Amazing To See Our Projects Come To Life!” Developing Affective Learning During Geography Fieldwork Through Tropophilia, Mark Holton

School of Geography, Earth and Environmental Sciences

No abstract provided.


Successional Changes Of Epibiont Fouling Communities Of The Cultivated Kelp Alaria Esculenta: Predictability And Influences, Am Walls, Md Edwards, Lb Firth, Mp Johnson Feb 2017

Successional Changes Of Epibiont Fouling Communities Of The Cultivated Kelp Alaria Esculenta: Predictability And Influences, Am Walls, Md Edwards, Lb Firth, Mp Johnson

School of Geography, Earth and Environmental Sciences

There has been an increase in commercial-scale kelp cultivation in Europe, with fouling of cultivated kelp fronds presenting a major challenge to the growth and development of the industry. The presence of epibionts decreases productivity and impacts the commercial value of the crop. Several abiotic and biotic factors may influence the occurrence and degree of fouling of wild and cultivated fronds. Using a commercial kelp farm on the SW coast of Ireland, we studied the development of fouling communities on cultivated Alaria esculenta fronds over 2 typical growing seasons. The predictability of community development was assessed by comparing mean occurrence-day. …


Social Memory And The Resilience Of Communities Affected By Land Degradation, Geoff A. Wilson, Claire L. Kelly, Helen Briassoulis, Agostino Ferrara, Gianni Quaranta, Rosanna Salvia, Vassilis Detsis, Michiel Curfs, Artemio Cerda, Ahmed El-Aich, Honghu Liu, Costas Kosmas, Concepción L. Alados, Anton Imeson, Ruta Landgrebe-Trinkunaite, Luca Salvati, Sandra Naumann, Hu Danwen, Theodoros Iosifides, Thanassis Kizos, Giuseppe Mancino, Angelo Nolè, Min Jiang, Pingcang Zhang Feb 2017

Social Memory And The Resilience Of Communities Affected By Land Degradation, Geoff A. Wilson, Claire L. Kelly, Helen Briassoulis, Agostino Ferrara, Gianni Quaranta, Rosanna Salvia, Vassilis Detsis, Michiel Curfs, Artemio Cerda, Ahmed El-Aich, Honghu Liu, Costas Kosmas, Concepción L. Alados, Anton Imeson, Ruta Landgrebe-Trinkunaite, Luca Salvati, Sandra Naumann, Hu Danwen, Theodoros Iosifides, Thanassis Kizos, Giuseppe Mancino, Angelo Nolè, Min Jiang, Pingcang Zhang

School of Geography, Earth and Environmental Sciences

Based on evidence collected in 22 village communities from nine study sites situated in Spain, Italy, Greece, Morocco and China, this study analyses the complex interlinkages between social memory, community resilience and land degradation. Social memory is seen as an important explanation regarding the ability of a local community to manage and cope with land degradation. Emphasis is placed on the importance of three components of social memory—rites, traditions and social learning processes—for shaping community resilience in coping with land degradation processes. The study argues that although there are subtle differences between the 22 village communities, the loss of social …


A Substantial Fraction Of Phytoplankton-Derived Don Is Resistant To Degradation By A Metabolically Versatile, Widely Distributed Marine Bacterium, L Polimene, D Clark, S Kimmance, P Mccormack Feb 2017

A Substantial Fraction Of Phytoplankton-Derived Don Is Resistant To Degradation By A Metabolically Versatile, Widely Distributed Marine Bacterium, L Polimene, D Clark, S Kimmance, P Mccormack

School of Geography, Earth and Environmental Sciences

The capacity of bacteria for degrading dissolved organic nitrogen (DON) and remineralising ammonium is of importance for marine ecosystems, as nitrogen availability frequently limits productivity. Here, we assess the capacity of a widely distributed and metabolically versatile marine bacterium to degrade phytoplankton-derived dissolved organic carbon (DOC) and nitrogen. To achieve this, we lysed exponentially growing diatoms and used the derived dissolved organic matter (DOM) to support an axenic culture of Alteromonas sp.. Bacterial biomass (as particulate carbon and nitrogen) was monitored for 70 days while growth dynamics (cell count), DOM (DOC, DON) and dissolved nutrient concentrations were monitored for up …


Subsequent Biotic Crises Delayed Marine Recovery Following The Late Permian Mass Extinction Event In Northern Italy, William J. Foster, Silvia Danise, Gregory D. Price, Richard J. Twitchett Feb 2017

Subsequent Biotic Crises Delayed Marine Recovery Following The Late Permian Mass Extinction Event In Northern Italy, William J. Foster, Silvia Danise, Gregory D. Price, Richard J. Twitchett

School of Geography, Earth and Environmental Sciences

No abstract provided.


Faunal Response To Sea-Level And Climate Change In A Short-Lived Seaway: Jurassic Of The Western Interior, Usa, S Danise, Sm Holland Feb 2017

Faunal Response To Sea-Level And Climate Change In A Short-Lived Seaway: Jurassic Of The Western Interior, Usa, S Danise, Sm Holland

School of Geography, Earth and Environmental Sciences

Understanding how regional ecosystems respond to sea-level and environmental perturbations is a main challenge in palaeoecology. Here we use quantitative abundance estimates, integrated within a sequence stratigraphic and environmental framework, to reconstruct benthic community changes through the 13 myr history of the Jurassic Sundance Seaway in the western United States. Sundance Seaway communities are notable for their low richness and high dominance relative to most areas globally in the Jurassic, and this probably reflects steep temperature and salinity gradients along the 2000 km length of the Seaway that hindered colonization of species from the open ocean. Ordination of samples shows …


The Cold Climate Geomorphology Of The Eastern Cape Drakensberg: A Reevaluation Of Past Climatic Conditions During The Last Glacial Cycle In Southern Africa, S. C. Mills, T. T. Barrows, M. W. Telfer, L. K. Fifield Feb 2017

The Cold Climate Geomorphology Of The Eastern Cape Drakensberg: A Reevaluation Of Past Climatic Conditions During The Last Glacial Cycle In Southern Africa, S. C. Mills, T. T. Barrows, M. W. Telfer, L. K. Fifield

School of Geography, Earth and Environmental Sciences

No abstract provided.


A Place For Sharing: The Emotional Geographies Of Peer-Sharing In Uk University Halls Of Residences, Mark Holton Feb 2017

A Place For Sharing: The Emotional Geographies Of Peer-Sharing In Uk University Halls Of Residences, Mark Holton

School of Geography, Earth and Environmental Sciences

No abstract provided.


Combined Sea-Level And Climate Controls On Limestone Formation, Hiatuses And Ammonite Preservation In The Blue Lias Formation, South Britain (Uppermost Triassic – Lower Jurassic), Graham P Weedon, Hugh C Jenkyns, Kevin N Page Jan 2017

Combined Sea-Level And Climate Controls On Limestone Formation, Hiatuses And Ammonite Preservation In The Blue Lias Formation, South Britain (Uppermost Triassic – Lower Jurassic), Graham P Weedon, Hugh C Jenkyns, Kevin N Page

School of Geography, Earth and Environmental Sciences

Lithostratigraphic and magnetic-susceptibility logs for four sections in the Blue Lias Formation are combined with a re-assessment of the ammonite biostratigraphy. A Shaw plot correlating the West Somerset coast with the Devon/Dorset coast at Lyme Regis, based on 63 common biohorizon picks, together with field evidence, demonstrate that intra-formational hiatuses are common. Compared to laminated shale deposition, the climate associated with light marl is interpreted as both drier and stormier. Storm-related non-deposition favoured initiation of limestone formation near the sediment–water interface. Areas and time intervals with reduced water depths had lower net accumulation rates and developed a greater proportion of …


The Application Of Geomorphic Indices In Terrain Analysis For Ground Engineering Practice, M. R. Geach, M. Stokes, A. Hart Jan 2017

The Application Of Geomorphic Indices In Terrain Analysis For Ground Engineering Practice, M. R. Geach, M. Stokes, A. Hart

School of Geography, Earth and Environmental Sciences

No abstract provided.


Predicting Copper Speciation In Estuarine Waters – Is Dissolved Organic Carbon A Good Proxy For The Presence Of Organic Ligands?, Holly B.C. Pearson, Sean D.W. Comber, Charlotte Braungardt, Paul J. Worsfold Jan 2017

Predicting Copper Speciation In Estuarine Waters – Is Dissolved Organic Carbon A Good Proxy For The Presence Of Organic Ligands?, Holly B.C. Pearson, Sean D.W. Comber, Charlotte Braungardt, Paul J. Worsfold

School of Geography, Earth and Environmental Sciences

No abstract provided.


Bulk-Carbonate And Belemnite Carbon-Isotope Records Across The Pliensbachian-Toarcian Boundary On The Northern Margin Of Gondwana (Issouka, Middle Atlas, Morocco), Fatima Zahra Ait-Itto, Gregory D. Price, Addi A Ait, Driss Chafiki, Imane Mannani Jan 2017

Bulk-Carbonate And Belemnite Carbon-Isotope Records Across The Pliensbachian-Toarcian Boundary On The Northern Margin Of Gondwana (Issouka, Middle Atlas, Morocco), Fatima Zahra Ait-Itto, Gregory D. Price, Addi A Ait, Driss Chafiki, Imane Mannani

School of Geography, Earth and Environmental Sciences

No abstract provided.


New Multiproxy Record Of The Jenkyns Event (Also Known As The Toarcian Oceanic Anoxic Event) From The Mecsek Mountains (Hungary): Differences, Duration And Drivers, Tamás Müller, Gregory D. Price, Dávid Bajnai, Anita Nyerges, Dóra Kesjár, Béla Raucsik, Andrea Varga, Katalin Judik, József Fekete, Zoltán May, József Pálfy Jan 2017

New Multiproxy Record Of The Jenkyns Event (Also Known As The Toarcian Oceanic Anoxic Event) From The Mecsek Mountains (Hungary): Differences, Duration And Drivers, Tamás Müller, Gregory D. Price, Dávid Bajnai, Anita Nyerges, Dóra Kesjár, Béla Raucsik, Andrea Varga, Katalin Judik, József Fekete, Zoltán May, József Pálfy

School of Geography, Earth and Environmental Sciences

No abstract provided.


Interplay Between Stress Permutations And Overpressure To Cause Strike-Slip Faulting During Tectonic Inversion, David C.P. Peacock, Enrico Tavarnelli, Mark W. Anderson Jan 2017

Interplay Between Stress Permutations And Overpressure To Cause Strike-Slip Faulting During Tectonic Inversion, David C.P. Peacock, Enrico Tavarnelli, Mark W. Anderson

School of Geography, Earth and Environmental Sciences

No abstract provided.