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Title: Aspects of shingle ecology with particular reference to lichen and mite populations.
Author: Barlow, Stephen Leonard.
Awarding Body: Royal Holloway, University of London
Current Institution: Royal Holloway, University of London
Date of Award: 1989
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(1) Transect data from the Lydd-on-Sea area at Dungeness establishes the detail of the primary shingle succession. This culminates in what is, probably, a climax community about 2 km inland in the RSPB reserve. (2) A pH gradient was found at the Lydd-on-Sea site, and this was shown to be correlated with the age of the ridges (F-14.78, P < 0.001). concentrations of "total" elements in the humic soils of the shingle ridges, are not correlated with ridge age but are shown to be correlated with concentrations in sea water (r2• 0.526, F-20.04, P < 0.001). (3) Lichens are seen as playing no significant part in the early succession on the ridges at Lydd-on-Sea, but do compete successfully with higher plants in the mid- to late-succession communities. (4) A quantitative and, to a degree qualitative, assessment of mite populations was made on seven lichen species of the late succession communities at Dungeness. No specific mite numbers/lichen species association was found, but a single cyclic, bi-modal response curve was obtained for total mite numbers on the seven lichen species sampled (F - 25.01, P < 0.001). (5) A range of climatic parameters were assessed, both in relation to the ecology of Dungeness, and in particular to the mite populations on lichens. Only temperature was shown to be correlated (negatively) with mite numbers (F-6.3, p < 0.05), whilst rainfall and humidity were not significantly correlated (F- 3.99, P > 0.05, and F - 0.52, P > 0.4 respectively).
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Ecology