Habitat Suitability Modeling of Asian-Moon Scallop (Amusium pleuronectes) in Brebes District Waters, Central Java, Indonesia  

Achmad Sahri , Sutrisno Anggoro , Jusup Suprijanto
Master Program of Coastal Resources Management, Diponegoro University, Semarang, Indonesia
Author    Correspondence author
International Journal of Marine Science, 2014, Vol. 4, No. 61   doi: 10.5376/ijms.2014.04.0061
Received: 03 Mar., 2014    Accepted: 11 Sep., 2014    Published: 28 Oct., 2014
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This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Sahri et al., 2014, Habitat Suitability Modeling of Asian-Moon Scallop (Amusium pleuronectes) in Brebes District Waters, Central Java, Indonesia, International Journal of Marine Science, Vol.4, No.61 1-13 (doi: 10.5376/ijms.2014.04.0061)

Abstract

The purpose of this study was to analyze the characteristics of the environment that determines the bottom habitat of the scallop from Brebes District and to map the potential habitat of scallop using spatial modeling. Research areas include the waters covering 806.03 km2 of Brebes District extending 12 miles outward the sea. Habitat suitability mapping was conducted using Ecological Niche Factor Analysis (ENFA). Kolmogorov-Smirnov test was used to test differences in each environment occupied by scallop with the overall study area.

ENFA results showed that the scallop required habitats with very different conditions from the mean habitat conditions existing in all study areas (p <0.05). The suitable habitat for scallop Amusium pleuronectes in Brebes District waters were the bottom water column with high plankton density (11,001-14,500 ind/L), between 18-31 m of water depth, low total suspended solids (<3.61 mg/L), soft sediments substrate (mud, φ ≥ 6) and a relative distant from estuary (> 5 km). In addition, the scallop also required bottomwatershabitat with current velocity and high salinity (> 0.06 m/sec; 31.85-32.65 ‰) and low temperature of the bottom waters (29.92-30.06 °C), while towards the pH level of the bottom waters, scallop were relatively more tolerant (7.3-7.4). Based on spatial modeling of habitat suitability in the study area, there were three categories obtained: 1) “suitable habitat” area of ​​4,629.01 ha (5.8%), 2) “marginal habitat” area of 9,291.09 ha (11.5%), and 3) “unsuitable habitat” for scallops covering an area of ​​66,682.68 ha (82.7%).

Keywords
Amusium pleuronectes; ENFA; Habitat modeling; GIS; Scallop
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