• Cosmogenic 7Be deposition in North Wales: 7Be concentrations in sheep faeces in relation to altitude and precipitation

      Salisbury, Russell T.; Cartwright, John H. (Elsevier, 2005-03)
      This article discusses if there is any relationship between 7Be concentrations, altitude and precipitation by measuring 7Be activity within sheep faeces in an area of North Wales.
    • Grike-roclimates

      Burek, Cynthia V.; Legg, Colin; Chester College of Higher Education (English Nature, 1999-07)
      This journal article discusses data collected at two north Wales sites that demonstrates that the direction of grikes makes a significant difference on the biodiversity of limestone pavements.
    • An investigation into the numerical determinants of secondary sex ratio

      Lewis, Stephen J.; Glenn, Janine; Chester College of Higher Education (2000)
      Data from the North Wales parishes of Hawarden and Northop were found previously to show seasonality for birth rate. In keeping with values reported in other studies, the annual secondary sex ratio of 105.3% was found. This sex ratio was also found to vary throughout the year in a cyclical way with a peak occuring in late summer. When male and female birth rates were investigated separately, it was found that females showed a more pronounced cyclicity than males with the peaks for both sexes occuring in the spring. A significant negative correlation between sex ratio at birth and mean day lenght (hours between sunrise and sunset) of the putative month of conception was observed. Sex ratio is a useful but derived parameter and has no independant existence upon which natural selection can be said to exert a direct influence. Therefore, the behaviour of the determinants of sex ratio should not be overlooked.
    • Metacarpophalangeal pattern profile analysis of a sample drawn from a North Wales population

      Lewis, Stephen J.; Chester College of Higher Education (Taylor & Francis, 2001)
      Sexual dimorphism and population differences were investigated using metacarpophalangeal pattern profile (MCPP) analysis. Although it is an anthropmetric technique, MCPP analysis is more frequently used in genetic syndrome analysis and has been under-used in the study of human groups. The present analysis used a series of hand radiographics from Gwynedd, North Wales, to make comparisons, first, between the sexes within the sample and then with previously reported data from Japan. The Welsh sexes showed MCPP analyses that indicated size and shape differences but certain similarities in shape were also evident. Differences with the Japanese data were more marked. MCPP anlysis is a potentially useful anthropmetric technique but requires further statistical development.
    • Microclimate & limestone pavement biodiversity: A pilot project to look at the longterm effects of grike orientation on microclimate and biodiversity in North Wales

      Burek, Cynthia V.; Legg, Colin; Chester College of Higher Education (Countryside Council for Wales/Cyngor Cefn Gwlad Cymru, 1999-07)
      A long-term project (two years initially) was set up to produce a valuable database of microclimate data across two complete seasonal changes through two winter and summer soltices. The results of the project to date are: grike orientation has the potential to greatly affect the vegetation within the grikes and influence both the timing of its germination, growth and development; the bottom of the grike sufferts less temperatire fluctuation than the surface; there is a significant difference in the solar ration at 57 cm depth between the winter solstice and Mid February 1999; the range of bottom temperatures is significatnly higher in the north-south grikes during the winter months; north-south grikes suffer lower minumum temperatures during the autumn months. Grikes at Y Taranau and Bryn Pydew nature reserve were analysed.
    • Pavement pleasures

      Burek, Cynthia V.; Deacon, Joanna; University College Chester (English Nature, 1998-06)
      This journal article discusses limestone pavements in north Wales.
    • Seasonality in birth rate in two 19th century North Wales parishes

      Lewis, Stephen J.; Glenn, Janine; Chester College of Higher Education (2000)
      An understanding of the basic patterns in the seasonality of birth rate may be useful in certain fertility techniques. The use of artificial birth control, however, has had the effect of masking the influence of underlying biometeriological factors. To elucidate trends in birth seasonality in the absence of current social factors, a study useing nineteenth-century parish records was undertaken. Analysis of 5,905 births recorded in the baptismal records of the parishes of Hawarden and Northop between the years 1837 and 1886 revealed significant seasonal trend with a peak occuring in the spring. Further analysis showed a significant positive correlation occuring between the (standardized) numbers of births in each month and the mean day length (hours between sunrise and sunset) of the pulative month of conception.
    • Stimulating public interest in our urban environment in Wales / Ennyn diddirdeb y cyhoedd yn ein hamgylchedd trefol yng Nghymru

      Burek, Cynthia V.; University College Chester (Cadw, 2005-01-01)
      This book chapter discusses urban geology trails in Wales and how they can act as an inexpensive method of increasing public awareness of local geology.
    • The use and abuse of RIGS sites

      Burek, Cynthia V.; Chester College of Higher Education (Association of UK RIGS Groups (UKRIGS), 2000)
      The classification of geological sites for conservation management purposes can lead to, what some people might regard as abuse of sites. The difference between true abuse of geologically conserved sites and percieved abuse is explored in order to encourage a holistic approach to site management and conservation. Examples are taken from RIGS sites in north Wales.