NARRS Data 2007 - 2013
Data collected under the National Amphibian and Reptile Recording Scheme (NARRS) between its inception in 2007 and 2011. Registered volunteers survey random squares to agreed, repeatable protocols in order to generate national estimates of site occupancy for all widespread amphibian and reptile species. Absences (negative results) are also recorded (e.g. a NARRS amphibian survey where no amphibians were found will show in the dataset as no amphibians recorded at that location in that year). A longer description of the protocols can be found at www.narrs.org.uk.
United Kingdom. Sparsely populated areas show poorer coverage. Surveys are conducted within assigned 1km OSGB national grid squares which should be taken as the gross resolution of the survey data.
Confidence in the data is high. These data were collected to agreed, robust protocols collected by registered volunteers (usually) trained and experienced in the techniques.
See www.narrs.org.uk for details. Amphibian data is captured using (i) visual survey, (ii) netting (iii) night torching and (iv) bottle trapping where experienced and appropriate. Reptile data is captured using (i) visual survey and (ii) surveys of existing and artificial refugia. Four survey visits are recommended to each survey square within a given year in order to have high confidence of true absences.
Amphibian and Reptile Conservation Trust, 2016.
Looking up... the number of records that can be accessed through the NBN Atlas. This resource was last checked for updated data on 21 Nov 2016. The most recent data was published on 21 Nov 2016.Click to view records for the NARRS Data 2007 - 2013 resource.
Metadata last updated on 2017-06-16 14:42:55.0