Analyses of pollen, tephra, mineral input and degree of peat humification from three neighbouring raised peat profiles at Corlea, central Ireland, covering the period of the deposition of a tephra layer dated to just before 2290 cal. BC, and thought to represent Hekla-4 (2310±20 BC), are used to show the problems of relying on data from a single profile when invoking relationships between volcanic activity, climate and ecosys-tem response. While there appears to be a strong correlation between tephra deposition and flooding of the bog surface in one profile, with a short-lived increase in the rate of peat accumulation, comparison with the other two records suggests that peat had already begun a trend to a less humified condition before tephra deposition, and that evidence of local bog surface flooding was neither consistent nor synchronous.
Aaby, B. and Tauber, H.1975: Rates of peat formation in relation to degree of husnification and local environment, as shown by studies of a raised bog in Denmark. Boreas4, 1-14.
2.
Baillie, M.G.L.1989: Hekla 3: how big was it?Endeavour13, 78-81.
3.
Baillie, M.G.L. and Munro, M.A.R.1988: Irish tree rings, Santorini and volcanic dust veils. Nature322, 344-346.
4.
Barber, K.. Chambers, F.M., Maddy, D., Stoneman, R. and Brew, S.1994: A sensitive high-resolution record of late-Holocene climatic change from a raised bog in northern England. The Holocene4, 198-205.
5.
Bennett, K.D.1984: The post glacial history of Pinus sylvestris in the British Isles. Quaternary Science Reviews3, 133-155.
6.
Birks, H.J.B.1994: Did Icelandic volcanic eruptions influence the post-glacial vegetation history of the British Isles?Trends in Ecology and Evolution9, 312-314.
7.
Blackford, J.J. and Chambers, F.M.1993: Determining the degree of peat decomposition in peat-based palaeoclimatic studies. International Peat Journal5, 7-24.
8.
Blackford, J.J., Edwards, K.J., Dugmore, A.D., Cook, G.T. and Buckland, P.C.1992: Icelandic volcanic ash and the mid-Holocene Scots pine (Pinus sylvestris) pollen decline in northern Scotland. The Holocene2, 260-265.
9.
Bridge, M.C., Haggart, B.A. and Lowe, J.J.1990: The history and palaeoclimatic significance of subfossil remains of Pinus sylvestris in blanket peats from Scotland. Journal of Ecology78, 77-99.
10.
Caseldine, C.J. and Hatton, J.M.1996: Early land clearance and wooden trackway construction in the third and fourth millennia BC at Corlea, Co. Longford. Proceedings of the Royal Irish Academy, Biology and Environment96B, 11-19.
11.
Caseldine, C.J., Hatton, J.M. and Caseldine, A.E.1996a: Palaeoecological studies at Corlea (1988-1992). In Raftery, B., editor, Trackwuy excavations in the Mountdillon Bogs, Co. Longford, 1985-1991, Transactions of the Irish Wetland Archaeological Unit 3, 379-392.
12.
Caseldine, C.J., Hatton, J., Huber, U., Chiverrell, R. and Woolley, N.1996b: Palaeoecological work at Corlea (1992-1995). In Raftery, B., editor, Trackway excavations in the Mountdillon Bogs, Co. Longford, 1985-1991, Transactions of the Irish Wetland Archaeological Unit 3, 393-394.
Dugmore, A.D., Cook, G.T., Shore, S., Newton, A.J., Edwards, K.J. and Larsen, G.1995: Radiocarbon dating tephra layers in Britain and Iceland. Radiocarbons37, 379-388.
15.
Gear, A.J. and Huntley, B.1991: Rapid changes in the range limits of Scots pine 4000 years ago. Science251, 544-547.
16.
Grattan, J. and Charman, D.J.1994: Non-climatic factors and the environmental impact of volcanic volatiles: implications of the Laki fissure eruption of AD 1783. The Holocene4, 101-106.
17.
Hall, VA., Pilcher, J.R. and McCormac, F.G.1993: Tephra-dated low-land landscape history of the north of Ireland. New Phytologist125, 193-202.
18.
Hall, VA., Pilcher, J.R. and McCormac, F.G.1994: Icelandic volcanic ash and the mid-Holocene Scots pine (Pinus sylvestris) decline in the north of Ireland: no correlation. The Holocene4, 79-83.
19.
Moloney, A.1993: Survey of the raised bogs of County Longford. Trans-actions of the Irish Archaeological Wetland Unit 1, 120-120 pp.
20.
Nilssen, E. and Vorren, K.-D.1991: Peat humification and climate history. Norsk Geologisk Tidsskrift71, 215-217.
21.
Pearson, G.W. and Stuiver, M.1993: High precision bi-decadal calibration of the radiocarbon time scale, 500-2500 Bc. Radiocarbon35, 25-33.
22.
Pilcher, J.R., Hall, V.A. and McCormac, F.G.1995: Dates of Holocene Icelandic volcanic eruptions from tephra layers in Irish peats. The Holocene5, 103-110.
23.
PiLcher, J.R. and Hall, V.A.1992: Towards a tephrochronology for the Holocene of the north of Ireland. The Holocene2, 255-259.
24.
Raftery, B.1990: Trackways through time. Dublin: Headline Publishing, 75-75 pp.
25.
Stockmarr, J.1971: Tablets with spores used in absolute pollen analysis. Pollen et Spores13, 615-621.
