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Site condition monitoring of lamprey in the Endrick Water SSSI and SAC, 2012

Dataset homepage

Citation

NatureScot (2023). Site condition monitoring of lamprey in the Endrick Water SSSI and SAC, 2012. Occurrence dataset https://doi.org/10.15468/iye6yf accessed via GBIF.org on 2023-09-22.

Description

Brook lamprey (Lampetra planeri) and river lamprey (L. fluviatilis) are primary qualifying features of the Endrick Water Special Area of Conservation (SAC) and are notified features of the Endrick Water Site of Special Scientific Interest (SSSI). The data documents a lamprey survey conducted in 2012 as part of the Site Condition Monitoring programme for the designated site.

Purpose

The purpose of this survey was to build upon the results of previous surveys undertaken (Forth Fisheries Foundation, 2004; Loch Lomond Fishery Trust, 2005; Hume, 2011; Watt et al., 2011) to determine the condition of the lamprey populations in the Endrick Water SSSI and SAC by providing a detailed description of the distribution and density of brook and river lamprey. This and the previous surveys also provided information on the presence of sea lamprey in the Endrick Water.

Sampling Description

Quality Control

There is a high degree of confidence - sampling was by experienced surveyors. River and brook lamprey larvae cannot be reliably differentiated (Gardiner, 2003) and are identified only to genus in the dataset.

Method steps

  1. Twenty-five sites were sampled across the Endrick Water (n = 19) and Blane Water (n = 6). The survey consisted of electrofishing optimal or sub-optimal habitat within 100 m long stretches of river (Harvey & Cowx, 2003). When sufficient optimal habitat was present at a site a total of 4 m2 was electrofished using fully-quantitative methods and quadrat frames (see section 2.3). At sites where the size of habitat patches was limited or a mix of optimal and sub-optimal habitat was present, both habitats types were electrofished using fully-quantitative methods and quadrats and the results for each habitat type were recorded separately. When no optimal habitat was present at a site, a fully-quantitative survey of sub-optimal habitat was undertaken using quadrats. Where, due to obstructions on the channel bed or bank, it was not possible to use quadrats, semi-quantitative timed electrofishing of a measured area of substrate was undertaken. Larval lamprey were identified, counted, measured under anaesthetic, and returned to the sample area.

Taxonomic Coverages

Geographic Coverages

The records in this dataset relate to the Endrick Water SSSI and SAC in west central Scotland.

Bibliographic Citations

Contacts

originator
NatureScot
Great Glen House, Leachkin Road
INVERNESS
IV3 8NW
Telephone: 01463 725000
homepage: https://www.nature.scot/
metadata author
NatureScot
Great Glen House, Leachkin Road
INVERNESS
IV3 8NW
Telephone: 01463 725000
homepage: https://www.nature.scot/
distributor
NBN Atlas
Unit F, 14 - 18 St Mary's Gate, Lace Market
Nottingham
NG1 1PF
Nottinghamshire
GB
email: admin@nbnatlas.org
Colin McLeod
administrative point of contact
email: Colin.McLeod@nature.scot
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