Wales Otter Survey Database
As part of a scheme to monitor the distribution of otters throughout the UK, four Welsh otter survey have been carried out covering the years 1977-78, 1984-85, 1991 and 2002 (funded by the Nature Conservation Council, The Vincent Wildlife Trust - 1984-5 & 1991 - and the Environment Agency respectively). This database is currently only made up of the 1991 and 2002 surveys. Sites were selected by accessibility and likelihood of finding signs of otter activity - typically road bridges and the confluences of watercourses. The number of sites visited per hydrometric region varied. No attempt was made to randomise the sampling effort, but there was some site variability due different issues when the surveys were undertaken - 1008 sites have been consistently monitored over the four surveys. The number of spraints was recorded. Mink were recorded in this survey. There are also Otter Survey databases for Scotland, England and Northern Ireland following the same protocol at differing resolutions.
dataset
https://registry.nbnatlas.org/public/show/dr928
name: dr928
5d973561-15fd-4b42-8e53-5aa0532e2ea8
eng
biota
Freshwater
Terrestrial
UK Biodiversity
Mink
Otter
Wales
-5.46
-2.5
53.5
51.35
1977
2002
publication
2004-11-16
Four surveys were conducted following a standard protocol. This protocol was to search up to 600m of one bank of a water body from a starting point (grid referenced), either all in one direction or split between two directions. Searching stopped as soon as signs of activity were noted in the 1977-79 and 2000-02 surveys, the full 600m being surveyed in the intervening surveys.
Comma Separated Values
Unknown
Released under the Open Government Licence v3.0
No limitations
Digital and Data Solutions, JNCC
distributor
Digital and Data Solutions, JNCC
pointOfContact
2018-05-17