A C Stevenson
Biographic Data
| ID | 5601286 |
|---|---|
| NAME | A C Stevenson |
| GIVEN NAMES | A C |
| FAMILY NAME | Stevenson |
| SIGNATURE | STEVENSON A C |
| AFFILIATIONS | Queen's University Belfast |
| VERIFIED | No |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 24 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1955 |
| LATEST PUBLICATION YEAR | 2022 |
| H-INDEX | 3 |
Volunteering for All – Scotland’s national framework
The International Journal of Integrated Care (IJIC) is an online, open-access, peer-reviewed scientific journal that publishes original articles in the field of integrated care on a continuous basis.IJIC has an Impact Factor of 5.120 (2020 JCR, received in June 2021)The IJIC 20th Anniversary Issue was published in 2021
Testing the Use of Bomb Radiocarbon to Date the Surface Layers of Blanket Peat
The recently formed surface layers of peatlands are archives of past environmental conditions and can have a temporal resolution considerably greater than deeper layers. The low density and conditions of fluctuating water table have hindered attempts to construct chronologies for these peats. We tested the use of the radiocarbon bomb pulse to date recently accumulated peat in a blanket mire. The site was chosen because the peat profiles contained…
The temperature of Europe during the Holocene reconstructed from pollen data
The Holocene forest history of the Montes Universales, Teruel, Spain
A radiocarbon-dated peat core from Ojos del Tremedal, Montes Universales, Spain, provides insights into the dynamics of high montane forest communities in Central Iberia from the Lateglacial to the late Holo cene. The Lateglacial landscape was characterized by grassland dominated by Gramineae, Cyperaceae and Artemisia, together with Juniperus, which was invaded from c. 9600 cal. BP by Betula and Pinus as climate conditions improved. Given the red…
Effects of burning and grazing on carbon sequestration in a Pennine blanket bog, UK
Terrestrial ecosystems contain large amounts of carbon (C) and have the potential to significantly increase atmospheric carbon dioxide (CO 2 ) concentrations. Peatlands are particularly important for C storage, although little is known about the effects of anthropogenic activities on C balance in these ecosystems. Sheep-grazing and rotational burning are widely practised on blanket peat moorlands in the United Kingdom. The effects of these activi…
Sedimentary records of the extent and impact of atmospheric contamination from a remote Siberian highland lake
The Central Asian Khamar Daban Mountain Range (SE Siberia) is a remote region with softwater lakes that probably receive atmospheric pollution from local industry as well as via long-distance transport. Palaeolimnological evidence of the impact of atmospheric pollution at one isolated and otherwise undisturbed highland site in the Khamar Daban, Lake Kholodnoye, was obtained. Short sediment cores were analysed for radio-isotopes, to establish a se…
The palaeosalinity and vegetational history of Garaet el Ichkeul, northwest Tunisia
Palaeoecological studies of a 14 C-dated, 6 m Livingstone core collected from Lac Ichkeul, N. Tunisia have allowed a palaeosalinity and vegetational history record for the last 3000 years to be derived from pollen, chemical and faunal evidence. The lake has been the subject of at least three different salinity regimes; saline (c. 3000 BP-c. 2000 BP), then brackish - fresh (c. 2000 BP-c. 1500 BP), and finally saline (c. 1500 BP-present). These cha…
Long-term changes in the extent of heather moorland in upland Britain and Ireland
On the basis of pollen analysis of 210 Pb-dated lake and loch sediment cores from across upland Britain and Ireland we show that heather cover has declined in c. 90% of sites over the last 200 years. Our analysis covers the time from AD 1400 to the present with a resolution of decades. Major losses commenced during the seventeenth to nineteenth centuries, and were greatest in regions with high grazing pressures from sheep. Subsequently, extensive…
Ancient Forests in Spain
Five pollen diagrams from two mires in the province of Huelva in south-west Spain are re-evaluated in the light of 15 radiocarbon dates, and multivariate numerical analyses of modern and fossil pollen samples in the region. The results of these analyses suggest that managed woodland of dehesa type can be detected in pollen diagrams, and can be interpreted within the archaeological sequence known from the area
Diatoms and pH reconstruction
Palaeolimnological diatom data comprise counts of many species expressed as percentages for each sample. Reconstruction of past lake-water pH from such data involves two steps; (i) regression, where responses of modern diatom abundances to pH are modelled and (ii) calibration where the modelled responses are used to infer pH from diatom assemblages preserved in lake sediments. In view of the highly multivariate nature of diatom data, the strongly…
Retinoblastoma
Frequency of Epiloia in Northern Ireland
Records of Deaf Mutism in Northern Ireland
A recent survey of deaf mutism in Northern Ireland has produced strong evidence that about a quarter of all born deaf mutes in the population are deaf because of non-hereditary causes (Stevenson and Cheeseman, in press). Lancaster (1951, 1954) has drawn attention to epidemics of deaf mutism in Australia, New Zealand, and Iceland, and has advanced presumptive, but nevertheless convincing, evidence that four out of five epidemics in Australia were …
Effects of burning and grazing on carbon sequestration in a Pennine blanket bog, UK
Terrestrial ecosystems contain large amounts of carbon (C) and have the potential to significantly increase atmospheric carbon dioxide (CO 2 ) concentrations. Peatlands are particularly important for C storage, although little is known about the effects of anthropogenic activities on C balance in these ecosystems. Sheep-grazing and rotational burning are widely practised on blanket peat moorlands in the United Kingdom. The effects of these activi…
Ancient Forests in Spain
Five pollen diagrams from two mires in the province of Huelva in south-west Spain are re-evaluated in the light of 15 radiocarbon dates, and multivariate numerical analyses of modern and fossil pollen samples in the region. The results of these analyses suggest that managed woodland of dehesa type can be detected in pollen diagrams, and can be interpreted within the archaeological sequence known from the area
Testing the Use of Bomb Radiocarbon to Date the Surface Layers of Blanket Peat
The recently formed surface layers of peatlands are archives of past environmental conditions and can have a temporal resolution considerably greater than deeper layers. The low density and conditions of fluctuating water table have hindered attempts to construct chronologies for these peats. We tested the use of the radiocarbon bomb pulse to date recently accumulated peat in a blanket mire. The site was chosen because the peat profiles contained…
The Holocene forest history of the Montes Universales, Teruel, Spain
A radiocarbon-dated peat core from Ojos del Tremedal, Montes Universales, Spain, provides insights into the dynamics of high montane forest communities in Central Iberia from the Lateglacial to the late Holo cene. The Lateglacial landscape was characterized by grassland dominated by Gramineae, Cyperaceae and Artemisia, together with Juniperus, which was invaded from c. 9600 cal. BP by Betula and Pinus as climate conditions improved. Given the red…
The palaeosalinity and vegetational history of Garaet el Ichkeul, northwest Tunisia
Palaeoecological studies of a 14 C-dated, 6 m Livingstone core collected from Lac Ichkeul, N. Tunisia have allowed a palaeosalinity and vegetational history record for the last 3000 years to be derived from pollen, chemical and faunal evidence. The lake has been the subject of at least three different salinity regimes; saline (c. 3000 BP-c. 2000 BP), then brackish - fresh (c. 2000 BP-c. 1500 BP), and finally saline (c. 1500 BP-present). These cha…
Long-term changes in the extent of heather moorland in upland Britain and Ireland
On the basis of pollen analysis of 210 Pb-dated lake and loch sediment cores from across upland Britain and Ireland we show that heather cover has declined in c. 90% of sites over the last 200 years. Our analysis covers the time from AD 1400 to the present with a resolution of decades. Major losses commenced during the seventeenth to nineteenth centuries, and were greatest in regions with high grazing pressures from sheep. Subsequently, extensive…
Records of Deaf Mutism in Northern Ireland
A recent survey of deaf mutism in Northern Ireland has produced strong evidence that about a quarter of all born deaf mutes in the population are deaf because of non-hereditary causes (Stevenson and Cheeseman, in press). Lancaster (1951, 1954) has drawn attention to epidemics of deaf mutism in Australia, New Zealand, and Iceland, and has advanced presumptive, but nevertheless convincing, evidence that four out of five epidemics in Australia were …
Frequency of Epiloia in Northern Ireland
Retinoblastoma
Diatoms and pH reconstruction
Palaeolimnological diatom data comprise counts of many species expressed as percentages for each sample. Reconstruction of past lake-water pH from such data involves two steps; (i) regression, where responses of modern diatom abundances to pH are modelled and (ii) calibration where the modelled responses are used to infer pH from diatom assemblages preserved in lake sediments. In view of the highly multivariate nature of diatom data, the strongly…
Ancient Forests in Spain
Five pollen diagrams from two mires in the province of Huelva in south-west Spain are re-evaluated in the light of 15 radiocarbon dates, and multivariate numerical analyses of modern and fossil pollen samples in the region. The results of these analyses suggest that managed woodland of dehesa type can be detected in pollen diagrams, and can be interpreted within the archaeological sequence known from the area
The palaeosalinity and vegetational history of Garaet el Ichkeul, northwest Tunisia
Palaeoecological studies of a 14 C-dated, 6 m Livingstone core collected from Lac Ichkeul, N. Tunisia have allowed a palaeosalinity and vegetational history record for the last 3000 years to be derived from pollen, chemical and faunal evidence. The lake has been the subject of at least three different salinity regimes; saline (c. 3000 BP-c. 2000 BP), then brackish - fresh (c. 2000 BP-c. 1500 BP), and finally saline (c. 1500 BP-present). These cha…
Long-term changes in the extent of heather moorland in upland Britain and Ireland
On the basis of pollen analysis of 210 Pb-dated lake and loch sediment cores from across upland Britain and Ireland we show that heather cover has declined in c. 90% of sites over the last 200 years. Our analysis covers the time from AD 1400 to the present with a resolution of decades. Major losses commenced during the seventeenth to nineteenth centuries, and were greatest in regions with high grazing pressures from sheep. Subsequently, extensive…
Sedimentary records of the extent and impact of atmospheric contamination from a remote Siberian highland lake
The Central Asian Khamar Daban Mountain Range (SE Siberia) is a remote region with softwater lakes that probably receive atmospheric pollution from local industry as well as via long-distance transport. Palaeolimnological evidence of the impact of atmospheric pollution at one isolated and otherwise undisturbed highland site in the Khamar Daban, Lake Kholodnoye, was obtained. Short sediment cores were analysed for radio-isotopes, to establish a se…
The Holocene forest history of the Montes Universales, Teruel, Spain
A radiocarbon-dated peat core from Ojos del Tremedal, Montes Universales, Spain, provides insights into the dynamics of high montane forest communities in Central Iberia from the Lateglacial to the late Holo cene. The Lateglacial landscape was characterized by grassland dominated by Gramineae, Cyperaceae and Artemisia, together with Juniperus, which was invaded from c. 9600 cal. BP by Betula and Pinus as climate conditions improved. Given the red…
Effects of burning and grazing on carbon sequestration in a Pennine blanket bog, UK
Terrestrial ecosystems contain large amounts of carbon (C) and have the potential to significantly increase atmospheric carbon dioxide (CO 2 ) concentrations. Peatlands are particularly important for C storage, although little is known about the effects of anthropogenic activities on C balance in these ecosystems. Sheep-grazing and rotational burning are widely practised on blanket peat moorlands in the United Kingdom. The effects of these activi…
The temperature of Europe during the Holocene reconstructed from pollen data
Testing the Use of Bomb Radiocarbon to Date the Surface Layers of Blanket Peat
The recently formed surface layers of peatlands are archives of past environmental conditions and can have a temporal resolution considerably greater than deeper layers. The low density and conditions of fluctuating water table have hindered attempts to construct chronologies for these peats. We tested the use of the radiocarbon bomb pulse to date recently accumulated peat in a blanket mire. The site was chosen because the peat profiles contained…
Volunteering for All – Scotland’s national framework
The International Journal of Integrated Care (IJIC) is an online, open-access, peer-reviewed scientific journal that publishes original articles in the field of integrated care on a continuous basis.IJIC has an Impact Factor of 5.120 (2020 JCR, received in June 2021)The IJIC 20th Anniversary Issue was published in 2021
Geology and Paleoclimatology Research (8 works) · Archaeology (6 works) · Ecology (6 works) · Geography (6 works) · Geology (6 works) · Biology (5 works) · Holocene (5 works) · Chemistry (4 works) · Environmental Science (4 works) · Physical geography (4 works)