TY - JOUR AU - Pollard E. AB - Pieris brassicae was very abundant in the UK in 1992. The timing of systematic counts, anecdotal reports of exceptional local abundance and frequent counts at a coastal site, cast doubt on the importance of immigration in contributing to the large populations. Emergence within the UK is suggested. BT - Entomologist DA - 1994 DB - CABI - CAB Abstracts IS - 4 LA - English N2 - Pieris brassicae was very abundant in the UK in 1992. The timing of systematic counts, anecdotal reports of exceptional local abundance and frequent counts at a coastal site, cast doubt on the importance of immigration in contributing to the large populations. Emergence within the UK is suggested. PY - 1994 SP - 211 EP - 216 ST - Entomologist T2 - Entomologist TI - Was it a migration - the exceptional abundance of the large white butterfly Pieris brassicae (L.) in 1992. VL - 113 ER -