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Quantification of spatial and thematic uncertainty in the application of underwater video for benthic habitat mapping

Rattray, A, Ierodiaconou, D, Monk, J, Laurenson, L.J.B and Kennedy, P 2014, Quantification of spatial and thematic uncertainty in the application of underwater video for benthic habitat mapping, Marine geodesy, vol. 37, no. 3, pp. 315-336, doi: 10.1080/01490419.2013.877105.

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Title Quantification of spatial and thematic uncertainty in the application of underwater video for benthic habitat mapping
Author(s) Rattray, A
Ierodiaconou, D
Monk, J
Laurenson, L.J.B
Kennedy, P
Journal name Marine geodesy
Volume number 37
Issue number 3
Start page 315
End page 336
Total pages 21
Publisher Taylor & Francis
Place of publication London, Eng.
Publication date 2014
ISSN 0149-0419
1521-060X
Keyword(s) Habitat mapping
observer bias
spatial uncertainty
underwater video
USBL
Science & Technology
Physical Sciences
Technology
Geochemistry & Geophysics
Oceanography
Remote Sensing
LAND-COVER CHANGE
GROUND REFERENCE DATA
ACCURACY ASSESSMENT
MULTIBEAM BACKSCATTER
CLASSIFICATION
ECOLOGY
ERROR
MAPS
UK
Summary This study presents an analysis of the application of underwater video data collected for training and validating benthic habitat distribution models. Specifically, we quantify the two major sources of error pertaining to collection of this type of reference data. A theoretical spatial error budget is developed for a positioning system used to co-register video frames to their corresponding locations at the seafloor. Second, we compare interpretation variability among trained operators assessing the same video frames between times over three hierarchical levels of a benthic classification scheme. Propagated error in the positioning system described was found to be highly correlated with depth of operation and varies from 1.5m near the surface to 5.7m in 100m of water. In order of decreasing classification hierarchy, mean overall observer agreement was found to be 98% (range 6%), 82% (range 12%) and 75% (range 17%) for the 2, 4, and 6 class levels of the scheme, respectively. Patterns in between-observer variation are related to the level of detail imposed by each hierarchical level of the classification scheme, the feature of interest, and to the amount of observer experience. © 2014 Copyright © Taylor & Francis Group, LLC.
Language eng
DOI 10.1080/01490419.2013.877105
Field of Research 060205 Marine and Estuarine Ecology (incl Marine Ichthyology)
Socio Economic Objective 960507 Ecosystem Assessment and Management of Marine Environments
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069900

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