Habitat suitability of Scapharca subcrenata (Lischke) in the shallow water of the Xiaoheishan Island

The habitat suitability index (HSI) model was used to identify potential sites for sustainable restoration of ark shell, Scapharca subcrenata (Lischke), in the shallow water of Xiaoheishan Island, using a geographic information system framework. The seven input variables of the HSI model were sedime...

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Bibliographic Details
Published in:Acta oceanologica Sinica 2016-12, Vol.35 (12), p.51-57
Main Authors: Zhou, Jian, Song, Jingjing, Bai, Qianling, Liu, Chengyue, Zhang, Zhipeng, Tang, Haitian
Format: Article
Language:English
Subjects:
Ammonia
Climatology
Composition
Decision making
Dissolved oxygen
Earth and Environmental Science
Earth Sciences
Ecology
Engineering Fluid Dynamics
Environmental Chemistry
Environmental restoration
Geographic information systems
Geographical information systems
Habitats
Information systems
Marine
Marine & Freshwater Sciences
Oceanography
Remote sensing
Restoration
Scapharca subcrenata
Seasonal variation
Seasonal variations
Sediment
Sediment composition
Shallow water
Sustainability
Water depth
Water temperature
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Summary:The habitat suitability index (HSI) model was used to identify potential sites for sustainable restoration of ark shell, Scapharca subcrenata (Lischke), in the shallow water of Xiaoheishan Island, using a geographic information system framework. The seven input variables of the HSI model were sediment composition, water temperature, salinity, dissolved oxygen, water depth, pH, and ammonia. A non-linear suitability function for each variable factor was used to transform the value into a normalized quality index ranging from 0 (nonsuitability) to 1 (best suitability). In present study, the analysis of habitat suitability was conducted for four seasons respectively. The majority of the study area has a high HSI value (>0.6) year round, which implies a strong suitability for restoration, with the optimal habitat located on the eastern side of the island. Correspondence analysis indicated that water temperature was the main factor causing seasonal variation, while sediment composition and water depth were the two major reasons for the differences in sites. The results of this work could provide support for restoration decision making through identification of potential sites for sustainable establishment of S. subcrenata .
ISSN:0253-505X
1869-1099
DOI:10.1007/s13131-016-0958-y