Remotely sensed hydroacoustics and observation data for predicting fish habitat suitability

Monk, J., Ierodiaconou, D., Bellgrove, A., Harvey, E. and Laurenson, L. 2011, Remotely sensed hydroacoustics and observation data for predicting fish habitat suitability, Continental shelf research, vol. 31, no. 2, Supplement 1, pp. S17-S27, doi: 10.1016/j.csr.2010.02.012.

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Title Remotely sensed hydroacoustics and observation data for predicting fish habitat suitability
Author(s) Monk, J.ORCID iD for Monk, J.
Ierodiaconou, D.ORCID iD for Ierodiaconou, D.
Bellgrove, A.ORCID iD for Bellgrove, A.
Harvey, E.
Laurenson, L.ORCID iD for Laurenson, L.
Journal name Continental shelf research
Volume number 31
Issue number 2
Season Supplement 1
Start page S17
End page S27
Total pages 11
Publisher Pergamon
Place of publication London, England
Publication date 2011-02-15
ISSN 0278-4343
Keyword(s) Ecological-Niche Factor Analysis
Marine protected area
Towed video
Marine mapping
Multi-beam echo-sounder

This paper investigates the use of using remotely sensed observation and full coverage hydroacoustic datasets to quantify habitat suitability for a marine demersal fish, the blue-throated wrasse. Because of issues surrounding the detection of species using remotely sensed video techniques, the application of presence-only techniques are well suited for modeling demersal fish habitat suitability. Ecological-Niche Factor Analysis is used to compare analyses conducted using seafloor variables derived from hydroacoustics at three spatial scales; fine (56.25 m2), medium (506.25 m2) and coarse (2756.25 m2), to determine which spatial scale was most influential in predicting blue-throated wrasse habitat suitability. The coarse scale model was found to have the best predictive capabilities with a Boyce Index of 0.80±0.26. The global marginality and specialization values indicated that, irrespective of spatial scale, blue-throated wrasse prefer seafloor characteristics that are different to the mean available within the study site, but exhibit a relatively wide niche. Although variable importance varied over the three spatial scale models, blue-throated wrasse showed a strong preference for regions of shallow water, close to reef, with high rugosity and maximum curvature and low HSI-B values. Generally the spatial patterns in habitat suitability were well represented in the Marine National Park compared to adjacent waters. However, some significant differences in spatial patterns were observed. Interspersion and Juxtaposition Indexes for unsuitable and highly suitable habitat were significantly smaller inside the Marine National Park, while the Mean Shape Index of unsuitable habitat in the Marine National Park was significantly larger.

Notes Available online 3 March 2010.
Language eng
DOI 10.1016/j.csr.2010.02.012
Field of Research 050211 Wildlife and Habitat Management
Socio Economic Objective 960507 Ecosystem Assessment and Management of Marine Environments
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2011
Copyright notice ©2010, Published by Elsevier Ltd.
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