Document Type : Original Article
Authors
1
Department of biology,Marine Environment Research center,Chabahar Branch,Islamic Azad University,Chabahar,Iran
2
Department of Marine Biology, Faculty of Science, Shahid Bahonar University, Kerman
3
Deputy of Marine Environment and Wetlands, Iranian Department of Environment
4
Department of Biology, Marine Environment Research Center, Chabahar Branch, Islamic Azad University, Chabahar, Iran
Abstract
Larak Island has a high biological diversity due to its topographic characteristics, Mahor hills, and coastal types. However, in recent years, various factors have caused the coastal habitats of this island to be threatened. Therefore, in this study, the cumulative stress rating of the inter- and sub-island habitats of Larak Island was evaluated using the Invest HRA model. The evaluation of the results of the Invest HRA model output chart shows that the factors of human structure and irresponsible tourism as the main stressors in the intertidal zone and the increase in water surface temperature, maritime transport, trawl fishing, marine mining, oil spills, desalination, gillnet fishing, traditional coastal fishing are considered as stressors with different degrees in the sub tidal zone. The average cumulative stress rating was recorded in the intertidal zone as 8.5 and in the sub tidal zone as 15. The results show that the amount of cumulative risk is high in the sub tidal waters of the northern, northeastern, and eastern coasts of Larak Island. Coral and algae habitats in this area are under a lot of stress and threat. The stress rating in the intertidal zone on the west coast of Larak Island is in the high range. Applying environmental management programs based on development plans and proportional to the level of threats in the coastal parts of Lark Island is suggested.
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