High-resolution habitat mapping on mud fields: New approach to quantitative mapping of Ocean quahog

During 2009–2012 stocks of the bivalve Arctica islandica (Linnaeus, 1767) (Ocean quahog) in Kandalaksha Bay (the White Sea) has been assessed using a side-scan sonar, grab sampling and underwater photo imaging. Structurally uniform localities were highlighted on the basis of side-scan signal. Each t...

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Bibliographic Details
Published in:Marine environmental research 2014-12, Vol.102, p.36-42
Main Authors: Isachenko, Artem, Gubanova, Yana, Tzetlin, Alexander, Mokievsky, Vadim
Format: Article
Language:English
Subjects:
Algorithms
Animals
Aquatic Organisms
Arctic Regions
Arctica islandica
Biomass
Bivalvia
Communities
Ecosystem
Environmental Monitoring - methods
Geological Phenomena
Habitat mapping
Habitats
Macrobenthos
Mapping
Marine
Marine Biology - methods
Mercenaria
Oceans
Oceans and Seas
Photography - methods
Raw materials
Sampling
Sediments
Side scan sonar
Sonar
Spatial distribution
White Sea
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Summary:During 2009–2012 stocks of the bivalve Arctica islandica (Linnaeus, 1767) (Ocean quahog) in Kandalaksha Bay (the White Sea) has been assessed using a side-scan sonar, grab sampling and underwater photo imaging. Structurally uniform localities were highlighted on the basis of side-scan signal. Each type of a signal reflects combination of sediment type, microtopography and structural characteristics of benthic community. The distribution of A. islandica was the predominant factor in determining community structure. Seabed attributes considered most significant were defined for each type of substrate type. Relations of sonar signal and sediment type were used for landscape mapping based on sonar data. Community characteristics at known localities were reliably interpolated to the area of survey using statistical processing of geophysical data. A method of integrated sonar and sampling data interpretation for high-resolution mapping of A. islandica by biomass groups, benthic faunal groups and associated habitats was developed. •We develop method of side-scan sonar data interpretation.•We create high-resolution map of Arctica islandica settlement by biomass groups.•We create high-resolution benthic habitat map in homogenous condition using side-scan sonar.
ISSN:0141-1136
1879-0291
DOI:10.1016/j.marenvres.2014.05.005