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. </br>
This dataset contains zero abundance records. These were collected as part of a structured survey using the methodology described below.
The objectives of the study were to: (i) refine the habitat management guidelines, (ii) develop a draft monitoring protocol, and (iii) develop a draft translocation protocol.
High: Survey was carried out by an experienced contractor, using approved methodology.
Three field visits were made during 1996 to the three primary sites previously identified as having populations of Hirudo medicinalis, and two visits other sites surveyed. Standard sampling was carried out at all sites, at each visit, using several methods: (i) disturbance, (ii) reed bundles, (iii) amphibian hosts, (iv) shore stones, (v) stones in deep water, and (vi) cocoon searches. Nine sites were revisited in March 1997 and amphibians examined for the presence of leeches. </br>
Preliminary results of a 2012 survey, confirming the continued presence of H. medicinalis at the two general locations where found in 1996, are also included. Full details of the 2012 survey will be supplied when available.
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