Harbour porpoise responses to pile-driving diminish over time

  • Isla Graham (Creator)
  • Nathan D. Merchant (Creator)
  • Adrian Farcas (Creator)
  • Tim R. Barton (Creator)
  • Barbara Cheney (Creator)
  • Saliza Binti Awang Bono University of Aberdeen (Creator)
  • Paul Thompson (Creator)

Dataset

Description

Data from: Harbour porpoise responses to pile-driving diminish over time

Estimating impacts of offshore windfarm construction on marine mammals requires data on displacement in relation to different noise levels and sources. Using echolocation detectors and noise recorders, we investigated harbour porpoise behavioural responses to piling noise during the 10-month foundation installation of a North Sea windfarm. Current UK guidance assumes total displacement within 26 km of pile driving. In contrast, we recorded a 50 % probability of response within 7.4 km (95 % CI = 5.7 – 9.4) at the first location piled, decreasing to 1.3 km (95 % CI = 0.2 – 2.8) by the final location; representing 28 % (95 % CI = 21 – 35) and 18 % (95 % CI = 13 – 23) displacement of individuals within 26 km. Distance proved as good a predictor of responses as audiogram weighted received levels, presenting a more practicable variable for environmental assessments. Critically, acoustic deterrent device (ADD) use and vessel activity increased response levels. Policy and management to minimise impacts of renewables on cetaceans have concentrated on pile-driving noise. Our results highlight the need to consider trade-offs between efforts to reduce far-field behavioural disturbance and near-field injury through ADD use.

Data type

Readme.txt file for data packages associated with paper on “Harbour porpoise responses to pile-driving diminish over time”.
R code to prepare porpoise responses & construction activity data.
Zip folder with 100 data files on porpoise occurrence.
Data on piling activity by turbine/OTM location.
Data on piling activity by turbine/OTM location & day.
Data on CPOD deployments.
Data on AIS detections within 1km of CPODs.
Data on AIS detections within 500m of CPODs.
Data on the predicted received sound exposure levels.
R code to analyse porpoise responses to construction activity.
Data on porpoise responses (from CPODs) for analyses of responses of porpoises to piling, acoustic deterrent device use and vessel activity.
Data on predicted porpoise responses for the model of 24-h response with distance.

Copyright and Open Data Licencing

This work is licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication license.
Date made available4 Jun 2019
PublisherDryad Digital Repository
Date of data production2019

Research Output

Harbour porpoise responses to pile-driving diminish over time

Graham, I. M., Merchant, N. D., Farcas, A., Candido Barton, T. R., Cheney, B., Bono, S. & Thompson, P. M., Jun 2019, In : Royal Society Open Science. 6, 6, 13 p., 190335.

Research output: Contribution to journalArticle

Open Access
File
  • 8 Citations (Scopus)
    8 Downloads (Pure)

    Cite this

    Graham, I. (Creator), Merchant, N. D. (Creator), Farcas, A. (Creator), Barton, T. R. (Creator), Cheney, B. (Creator), Awang Bono, S. B. (Creator), Thompson, P. (Creator) (4 Jun 2019). Harbour porpoise responses to pile-driving diminish over time. Dryad Digital Repository. 10.5061/dryad.5qg30sd