Pollenanalytischer Nachweis eines Schwermetallrasens in Wales

Post-Neolithic Vegetation Changes in the Western Rhinogau, Gwynedd, North-West Wales

“…The laboratory method used for the processing of organic samples followed Erdtman's acetolysis and has been described by Faegri and Iversen (1975). For Pont-Scethin, contiguous samples, 0o5 cm in thickness, were extracted in the laboratory from a peat monolith collected in the field, but only alternate samples were used for pollen counting.…”

“…No soil-pollen data has previously been published for Meirionnydd, whilst evidence from peat sites is restricted to Dolfrwynog (SH 748256; Ernst, 1969), Carneddau Hengwm (SH 628222; Moore, 1973) and Bwlch-y-Fign (SH 823183;Taylor, 1973).…”

“…i) (Taylor, 1973) and dated to A.D. 1400-I450 by medieval shoe remains. Further evidence of early medieval pastoral activity, post-dating the Wars of 1272-1307, has been indicated for Dolfrwynog in the Vale of Trawsfynydd (Ernst, 1969). This interference phase can be related partly to the pastoral enterprises (predominantly cattle) of the Cistercians at Cymer Abbey (Richards, 1959;Williams, 1969;Hughes et al, 1973).…”

High bioassay values inTerminalia alata leaves: indication of Cu mineralisation in Malanjkhand Granitoid, Central India

“…Biogeochemical exploration techniques involving chemical analysis of plants have been used in many parts of the world to identify mineral deposits buried under a thick cover of post-mineralisation material such as: (a) glacial till and undecomposed humus in temperate climates and (b) thick soil (resulting from the strong physical, chemical, and biological action of natural agents) in hot, humid tropical climates (Nesvetaylova, 1961;Davigneaud and Denaeyer-De Smet, 1963;Nicolls et al, 1965;Ernst, 1969;HowardWilliams, 1970;Chaffe and Hessin, 1971;Cole, 1971;Chaffee and Gale, 1976;Brooks and Redford, 1978;Malaisse et al, 1978;Cole and Leroex, 1978;Brooks et al, 1979b;Farago et al, 1980;Brooks andCrooks, 1980 andOlwell, 1986).…”

Copper tolerance in a population of Silene vulgaris ssp. maritima (A. & D. Love) at Dolfrwynog Bog near Dolgellau, North Wales

“…Present address : Department of Animal and Plant Sciences, PO Box 601, University of Sheffield S10 2UQ, England. community, and Ernst (1969) showed that the copper indicative species Minuartia verna (vernal sandwort) and Armeria maritima (sea pink) have been present since at least as early as the twelfth century. However, there appears to have been a marked decline in their numbers following turf cutting in the early part of the nineteenth century.…”