503 research outputs found
Modelling and mapping regional-scale patterns of fishing impact and fish stocks to support coral-reef management in Micronesia
No full textAim: Use a fishery-independent metric to model and map regional-scale fishing impact, and demonstrate how this metric assists with modelling current and potential fish biomass to support coral-reef management. We also examine the relative importance of anthropogenic and natural factors on fishes at biogeographical scales. Location: Reefs of five jurisdictions in Micronesia. Methods: A subset of 1,127 fish surveys (470 surveys) was used to calculate site-specific mean parrotfish lengths (a proxy for cumulative fishing impact), which were modelled against 20 biophysical and anthropogenic variables. The resulting model was extrapolated to each 1 ha reef cell in the region to generate a fishing impact map. The remaining data (657 surveys) were then used to model fish biomass using 15 response variables, including fishing impact. This model was used to map estimated current regional fish standing stocks and, by setting fishing impact to 0, potential standing stocks. Results: Human population pressure and distance to port were key anthropogenic variables predicting fishing impact. Total fish biomass was negatively correlated with fishing, but the influence of natural gradients of primary productivity, sea surface temperature, habitat quality and larval supply was regionally more important. Main conclusions: Mean parrotfish length appears to be a useful fishery-independent metric for modelling Pacific fishing impact, but considering environmental covariates is critical. Explicitly modelling fishing impact has multiple benefits, including generation of the first large-scale map of tropical fishing impacts that can inform conservation planning. Using fishing impact data to map current and potential fish stocks provides further benefits, including highlighting the relative importance of fishing on fish biomass and identifying key biophysical variables that cause maximum potential biomass to vary significantly across the region. Regional-scale maps of fishing, fish standing stocks and the potential benefits of protection are likely to lead to improved conservation outcomes during reserve network planning
The life and works of Osbert of Clare
No full textOsbert of Clare was an English monastic writer, whose works extended from
the mid-1120s to the mid-1150s. His Latin hagiography reflects a deep admiration for
Anglo-Saxon saints and spirituality, while his letters provide a personal perspective
on his turbulent career. As prior of Westminster Abbey, Osbert of Clare worked to
strengthen the rights and prestige of his monastery. His production of forged or
altered charters makes him one of England's most prolific medieval forgers. At times
his passion for reform put him at odds with his abbots, and he was sent into exile
under both Abbot Herbert (1121-c.1136) and Abbot Gervase (1138-c.1157). Also
Osbert, as one of the first proponents of the Immaculate Conception of Mary, wrote
about the feast, worked to legitimize its celebration, and provided us with the only
significant narration of its introduction to England.
This thesis is divided into two sections. The first section is principally
historical and the second is principally literary. In the first section, I provide an
overview of Osbert of Clare's career and examine in greater detail two of his most
significant undertaking: his promotion of Westminster Abbey and his attempted
canonization of Edward the Confessor. In the second section, I give a philological
study of Osbert Latin style and examine themes that nm throughout his writings, such
as virginity, exile and kingship. Osbert's promotion of the feast of the Immaculate
Conception is included in the second section of the thesis because of its ties to the
themes of virginity and femininity within his writings. There are also two appendices:
the first is a survey of the extant manuscripts of Osbert's writings, and the second is
an edition of Osbert's unpublished Life of St Ethelbert from Gotha,
Forschungsbibliothek MS Memb. i. 8l
Predictive models of cetacean distributions off the west coast of Scotland
No full textThe main purpose of this study was to produce and test the reliability of predictive models of cetacean distributions off the west coast of Scotland. Passive acoustic and visual surveys were carried out from platforms of opportunity between 2003 and 2005. Acoustic identifications were made primarily of harbour porpoises (Phocoena phocoena), delphinids, and sperm whales (Physeter macrocephalus). Generalised Additive Models (GAMs) were used to relate species’ distributions to a range of environmental variables over a range of temporal and spatial scales.
Predictive models of delphinid distributions showed both inter-annual and inter-month variations. Combining all data for all months and years resulted in a model that combined the environmental influences from each monthly and yearly model. Overall, delphinids were found to associate with the deep (> 400m) warm water (10.5°C-12.5°C), and in areas of deep thermocline.
Relationships between sperm whales and environmental variables were consistent over changes in grain size (9 km or 18 km), but not between areas. Although sperm whales were distributed in deep water characterised by weak thermoclines and strong haloclines in the most northerly area (Faroe-Shetland Channel), they were found in deep productive areas with cold surface temperature in the more southerly waters (Rockall Trough).
Within the southern Inner Hebrides, high use areas for harbour porpoises were consistently predicted over time (in years) and with differing survey techniques (acoustic versus visual), but not over space (southern Inner Hebrides versus whole of the Inner Hebrides). Harbour porpoises were mainly distributed in areas with low tidal currents and with higher detection rates during spring tides.
The use of prey as a predictor variable within models of delphinid distribution shows some promise: there were correlations between delphinid and herring (Clupea harengus) in shelf-waters in 2005 but not in 2004. These models can be used in mitigating acoustic threats to cetaceans in predicted high use areas off the west coast of Scotland
An ethnography of tourism and traditional Irish music in Doolin, Ireland
No full textThis thesis is an ethnographic study of the complex interplay between tourism and traditional Irish music based on fourteen months of fieldwork in Doolin, County Clare, Ireland between June 2002 and August 2003. The historical development of traditional Irish music and the localised tourist industry have become conjoined during the last three decades, and as a result the music and the idea of Doolin as a 'place' have become institutionalised and consolidated. This has further led to the development of a complex socioeconomic structure surrounding the music, its performance, and its commercialisation and consumption. The local social structure has also become complicated and internationalised. Specifically, the locale has seen a significant growth in the 'incomer' population, called 'blow-ins'. Blow-ins in this case have in fact become the inheritors and propagators of the local music scene, but this causes surprisingly little cognitive dissonance or tension between locals and incomers. This is despite the fact that the music is the raison d'etre of the local tourism industry. I propose that those incomers who successfully inherit and propagate the local music become assets to the cultural capital of the village, not a drain on it. Moreover, I suggest that the 'authenticity' of the music is not an ascribed quality but interdependently related to social status, seasonality, one’s relationship with the music, context, and phenomenologically inter subjective relations. By means of holistic anthropological research, this thesis attempts to refine our understanding of complex social relations in touristed destinations, the appropriation of musical 'traditions', and sharpen current anthropological theories surrounding the issues of 'authenticity' and globalisation
An annotated catalogue of selected works for clarinet by South African composers
No full textThe dissertation consists of an annotated catalogue of nineteen selected works for clarinet by South African composers. These are presented in chronological order, based on the year of composition. A short biographyof the composer is given before the work is discussed. Of the analysed works, all those for solo clarinet or for clarinet and piano have been graded. A thesis of a similar nature, written in 1989 by L.A. Hartshorne, entitled ""The Compositions for Clarinet by South African Composers"", contains details of twenty-four works written between 1928 and circa 1981. The majority of the compositions analysed in the current dissertation were written from around 1981 onwards, and to some extent, therefore, this research could be seen as complementary to the information contained in the aforementioned thesis. An addendum lists all the South African works featuring solo clarinet that the author was able to trace. These include solo works, cham ber works for up to nineteen instruments and concerto-type works with strings or orchestra
Cryptic Species? Patterns of Maternal and Paternal Gene Flow in Eight Neotropical Bats
No full textPMCID: PMC3144194This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Shipping noise in a dynamic sea : a case study of grey seals in the Celtic Sea
No full textThis study was supported by the EU (via PERSEUS grant FP7-OCEAN-2011-287600 and MyOcean SPA.2011.1.5-01 grant 283367). In addition, C.B. Embling was supported by the 2014 SoMSE Plymouth University Small (grant number 2014-SoMSE) research grant. D.J.F. Russell and D. Thompson were supported by the National Capability funding from the Natural Environment Research Council to the Sea Mammal Research Unit (grant no. SMRU1001). C. Vincent was supported by the Parc naturel marin d'Iroise and Région Poitou – Charentes (grant number 782423).Shipping noise is a threat to marine wildlife. Grey seals are benthic foragers, and thus experience acoustic noise throughout the water column, which makes them a good model species for a case study of the potential impacts of shipping noise. We used ship track data from the Celtic Sea, seal track data and a coupled ocean-acoustic modelling system to assess the noise exposure of grey seals along their tracks. It was found that the animals experience step changes in sound levels up to ~ 20 dB at a frequency of 125 Hz, and ~ 10 dB on average over 10–1000 Hz when they dive through the thermocline, particularly during summer. Our results showed large seasonal differences in the noise level experienced by the seals. These results reveal the actual noise exposure by the animals and could help in marine spatial planning.Peer reviewe
Efficient preservation of young terrestrial organic carbon in sandy turbidity-current deposits
No full text© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Hage, S., Galy, V. V., Cartigny, M. J. B., Acikalin, S., Clare, M. A., Grocke, D. R., Hilton, R. G., Hunt, J. E., Lintern, D. G., McGhee, C. A., Parsons, D. R., Stacey, C. D., Sumner, E. J., & Talling, P. J. Efficient preservation of young terrestrial organic carbon in sandy turbidity-current deposits. Geology, 48(9), (2020): 882-887, doi:10.1130/G47320.1.Burial of terrestrial biospheric particulate organic carbon in marine sediments removes CO2 from the atmosphere, regulating climate over geologic time scales. Rivers deliver terrestrial organic carbon to the sea, while turbidity currents transport river sediment further offshore. Previous studies have suggested that most organic carbon resides in muddy marine sediment. However, turbidity currents can carry a significant component of coarser sediment, which is commonly assumed to be organic carbon poor. Here, using data from a Canadian fjord, we show that young woody debris can be rapidly buried in sandy layers of turbidity current deposits (turbidites). These layers have organic carbon contents 10× higher than the overlying mud layer, and overall, woody debris makes up >70% of the organic carbon preserved in the deposits. Burial of woody debris in sands overlain by mud caps reduces their exposure to oxygen, increasing organic carbon burial efficiency. Sandy turbidity current channels are common in fjords and the deep sea; hence we suggest that previous global organic carbon burial budgets may have been underestimated.We thank C. Johnson, M. Lardie, A. Gagnon, A. McNichol, and the NOSAMS (National Ocean Sciences Accelerator Mass Spectrometry) team (Woods Hole Oceanographic Institution [WHOI], Massachusetts, USA) for their help with ramped oxidation system and isotopes. We thank the captain and crew of CCGS Vector. Support was provided by UK Natural Environment Research Council (NERC) grants NE/M007138/1 (to Cartigny) and NE/L013142/1 (to Talling), NE/P005780/1 and NE/P009190/1 (to Clare); a Royal Society Research Fellowship (to Cartigny); an International Association of Sedimentologists Postgraduate Grant and National Oceanography Centre Southampton–WHOI exchange program funds (to Hage); an independent study award from WHOI (to Galy); the Climate Linked Atlantic Sector Science (CLASS) program (NERC grant NE/R015953/1); and the European Research Council under the European Union’s Horizon 2020 research and innovation program (Grant 725955, to Parsons). We thank François Baudin, Xingqian Cui, editor James Schmitt, and three anonymous reviewers
Music therapy's relevance in a cancer hospital researched through a constructivist lens
No full textDeposited with permission of the author. © 2001 Clare O'Callaghan.A constructivist research paradigm informed an investigation of the relevance of music therapy (MT) in a cancer hospital, that is, (a) what did MT do(?) and (b) did it help? Over three months, criterion sampling was used to elicit interpretations from five sources: 128 patients who participated in MT, 27 patients who overheard or witnessed MT, 41 visitors, 62 staff, and the researcher who was also the MT clinician in this study. The researcher’s interpretations were recorded in a reflexive clinical journal and the respondents’ interpretations were written on anonymous open-ended questionnaires. The MT program was predominantly characterised by the use of patient and visitor selected live music. Thematic analysis, informed by grounded theory (Strauss & Corbin, 1990), and content analyses were performed on the five groups of data with the support of ATLAS/ti (Muhr, 1997) software. Many patients and visitors who experienced MT reported that MT elicited a range of affective responses and altered imaginings. Responses were especially characterised by memories being revisited but also characterised by the respondents’ “transportation” to new spaces or thoughts and physical sensations. Some staff and patients who overheard MT also reported similar experiences. The researcher, and often staff and visitors, also perceived that MT elicited affective and imagined sensations in patients
Neotropical Bats: Estimating Species Diversity with DNA Barcodes
No full textPMCID: PMC3144236This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
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