The BCT/MTUK Bats & Roadside Mammals…

Occurrence dataset published by Bat Conservation Trust

  • 16,098

    Occurrences
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Summary

Full Title

The BCT/MTUK Bats & Roadside Mammals Survey

Description

The distribution of bats and other mammals along roads in selected areas of England, Wales and Scotland.

Temporal coverages

Date range: May 2, 2005 - Sep 28, 2008

Language of Metadata

ENGLISH

Language of Data

ENGLISH

Originator
Bat Conservation Trust Quadrant House SE11 5RD 250 Kennington Lane London 0345 1300 228
Metadata author
Bat Conservation Trust Quadrant House SE11 5RD 250 Kennington Lane London 0345 1300 228
Administrative contact
Philip Briggs

doi:10.15468/39vba0

Published by

Bat Conservation Trust

Publication Date

May 5, 2017

Registration Date

Sep 15, 2010

Hosted by

National Biodiversity Network

Served by

NBN Atlas

Links

Alternative Identifiers

External Data

Metadata Documents

16,098 Georeferenced data

View records

All records | In viewable area

Description

The distribution of records is biased toward those groups who were able to participate in the survey: 2005: Avon, Cardiff & the Vale of Glamorgan, Central Scotland, Clyde, Dorset, Hampshire, Isle of W… more

About

What does this map show?

Other Contacts

Distributor
NBN Atlas Broadway Business Centre, 32a Stoney Street, Lace Market NG1 1LL Nottingham Nottinghamshire United Kingdom

Methodology

Quality control

Surveys were carried out within selected 15km square survey blocks in different counties in Britain. The survey routes were selected by participating volunteers. Bat echolocation calls were analysed by a volunteers, approximately 50% of which were trained by the project coordinator. The remainder were already experienced in sonogram analysis. Some of the records of rarer species were checked by the project coordinator. The dataset has been checked using NBN Record Cleaner.

Method Steps

  1. Time expansion (x10) bat detectors were attached to the rear passenger window of a car moving at 15 mph. The detector was set to sample 320ms of ultrasound every 3.52s. 25-30 mile routes were driven from May to September in 2005 and 2006. Survey routes were selected within pre-defined 15 km squares survey blocks. Surveys began 45 minutes after sunset. Bat calls were analysed by volunteers with some cross-validation or checking of records taking place by the project coordinator. Other visually observed mammals were recorded along the transects.