Recovery of the medicinal leech Hirudo medicinalis in Scotland - Phase II

Records of medicinal leech Hirudo medicinalis, horse leech Haemopis sanguisuga and amphibians from the three primary sites identified in 1995 as having populations of H. medicinalis, sites within 1 km of these sites and five sites with previous records of H. medicinalis. This dataset contains zero abundance records. These were collected as part of a structured survey using the methodology described below.