“…Although, as stated above, the Quaternary sediments of the chalk downlands of southern England are generally characterized by poor pollen preservation, a number of palynological studies have focused on sites bordering this area (Thorley, 1981;Scaife, 1982;Waton, 1982a;Bush, 1988Bush, , 1993Thomas and Rackham, 1996;Bennett and Preece, 1998;Waller and Hamilton, 2000). While it is debatable just how much of the pollen from these sites is derived from chalk downland, as opposed to extra-local or long-distance sources, such pollen data provide better proxy indicators of regional vegetation, and therefore environment, in comparison to molluscan evidence from dry valleys.…”