Use this URL to cite or link to this record in EThOS:
Title: Late-Glacial coleopteran assemblages from the west coast of the isle of man.
Author: Joachim, M. J.
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 1978
Availability of Full Text:
Access from EThOS:
The Quaternary sedi ments of t he west coast of the Isle of Man include kettlehole deposits of organic mat erial, some of which have been s hown by radioc arbon dating to be Lat egl acial . The general Quaternary stratigraphy of the west coas t near Kirkmichael and Jurby is ~riefl y surveyed , and de tailed descriptions are given of six organic sites i n t he e areas . 1aterial from one site at Jurby and t wo at Kirkmichael has been processed to extract beetle fossils; all t hree loc at i ons yielded rich f aunas . Inferences derived from knowledge of t he present- day ecology of the fossil species suggest that all three deposits accumulated during a peri od of fluctuating climate and associated local environmental changes . n initial very cold period immediately after degl aciation was fol lowed by a sudden climatic amelioration which took less than 100 years ; the subsequent temperate interlude of approximately 1 , 000 years was brought to an end by t wo consecutive periods of cooling , after which temperatures were again similar to those of the earliest post- glaciation stage . omparison of these results with fossil beetle studies from other Late-glacial sites in Britain shows that analogous changes took place el sewhere . Comparisons with palaeobotanical investigations suggest that , during periods of very rapid climatic change , beetles are more reliable t han plant fossils as indicators of prevailing conditions . modified scheme for subdivision of the British Lateglacial is proposed , based on evidence from insect faunas and stratigraphy , and some possibl e causes of Late-glacial climatic change are r eviewed . Computer analysis of some Late-glacia l faunas has been initiated, a nd the methods and some preliminary results are briefly described .
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available