a205707b-8dba-458f-ba27-2f340eecf46b urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2026-02-12T09:01:47 creation ISO 19115 2016 Bicheno region urchin barrens from AUV imagery a205707b-8dba-458f-ba27-2f340eecf46b This data set consists of a scored time-series of Autonomous Underwater Vehicle (AUV) images from the Bicheno region on the east coast of Tasmania. Surveys were conducted between 2011 and 2016 within the Governor Island Marine Reserve and nearby sites outside the reserve. Governor Island was surveyed in 2011, 2013, 2014 and 2016. The outside sites of Trap Reef, Cape Lodi and Butlers Point were surveyed in 2011, 2013 and 2016. Imagery across all surveys was scored for the presence of Centrostephanus rodgersii urchin barrens across rocky reef at each site. Prior to analysis the data was subsetted to every fifth image to avoid overlapping images. The data set also contains depth information for each image and a measure of rugosity (Vector Rugosity Measure) computed in ArcGIS software from a one metre resolution bathymetric map covering the survey sites. Analysis was conducted to examine the trend in the presence of barrens through time and to compare the occurrence of barrens inside the Governor Island Marine Reserve with sites outside the reserve. A spatio-temporal model incorporating both spatial and temporal correlation in the time-series of data was used. This data set contains the scored data used in the analysis. Further details of the methods used and results are contained in the following article. Please cite any use of the data or code by citing this article: Perkins NR, Hosack GR, Foster SD, Monk J, Barrett NS (2020) Monitoring the resilience of a no-take marine reserve to a range extending species using benthic imagery. PLOS ONE 15(8): e0237257. https://doi.org/10.1371/journal.pone.0237257 {"type": "Polygon", "coordinates": [[[148.290893555, -41.9753637545], [148.403503418, -41.9753637545], [148.403503418, -41.8404562694], [148.290893555, -41.8404562694], [148.290893555, -41.9753637545]]]} 148.290893555 148.403503418 -41.9753637545 -41.8404562694 Centrostephanus rodgersii Depth Marine protected area status Temperate Reef Vector rugosity measure autonomous underwater vehicle benthic imagery climate change ecosystem resilience marine protected areas marine reserves SHAPE-ZIP documentDigital DATA ACCESS - urchin barren scoring from AUV imagery [Shapefile download] WFS DATA ACCESS - urchin barren scoring from AUV imagery [CSV download] documentDigital CSV imas:NESP_NPerkins_AUV_urchinbarrens documentDigital MAP - AUV image locations scored for presence/absence urchin barrens WMS ANALYSIS CODE - R-INLA code to run the analyses outlined In Perkins et al. (2020) [readme included in file] documentDigital HTML View and download this data through the interactive IMAS Data Portal. documentDigital HTML ORCID ID documentDigital HTML ORCID ID documentDigital HTML ORCID ID documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML