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A hub and spoke network model to analyse the secondary dispersal of introduced marine species in Indonesia


Azmi, F and Hewitt, CL and Campbell, ML, A hub and spoke network model to analyse the secondary dispersal of introduced marine species in Indonesia, ICES Journal of Marine Science, 72, (3) pp. 1069-1077. ISSN 1054-3139 (2015) [Refereed Article]

Copyright Statement

Copyright 2014 International Council for the Exploration of the Sea

DOI: doi:10.1093/icesjms/fsu150


Indonesia is a biodiversity hotspot threatened with new introductions of marine species. As with many countries, Indonesia has a stratified shipping network of international ports linked to a large suite of domestic ports. We developed a hub and spoke network model to examine the risk associated with the secondary transfer of introduced marine species from the port hub of Tanjung Priok in Jakarta Bay to the 33 Indonesian provinces (including other ports in the Jakarta province). An 11-year shipping dataset was used (vessel next port of call records for maritime vessels that originated in Jakarta Bay and that remained in domestic waters) to derive a province ranking of vulnerability. Fifteen provinces represented almost 94% of the traffic frequency, with East Java and Jakarta provinces dominating. All urban provinces featured within the top seven highest frequency traffic provinces. Traffic patterns reflect an intra-coastal reliance on shipping, with traffic frequency decreasing with distance from Jakarta Bay. Provinces were regionalized into three categories (Lampung to East Java, Makassar Straits, and Malacca Straits) each with different vulnerabilities based on their values.

Item Details

Item Type:Refereed Article
Keywords:dispersal, non-indigenous species, risk management, risk model, shipping, vector, vulnerability
Research Division:Environmental Sciences
Research Group:Environmental management
Research Field:Environmental management
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Marine biodiversity
UTAS Author:Azmi, F (Ms Fauziah Azmi)
UTAS Author:Hewitt, CL (Professor Chad Hewitt)
UTAS Author:Campbell, ML (Associate Professor Marnie Campbell)
ID Code:106768
Year Published:2015
Web of Science® Times Cited:12
Deposited By:IMAS Research and Education Centre
Deposited On:2016-02-19
Last Modified:2016-05-24

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