Showing 2 results for Oman Sea.
Dr Siamak Behzadi, Dr Hadi Kouhkan, Dr Ali Salarpouri, Dr Mohmmad Darvishi, Dr Reza Dehghani,
Volume 13, Issue 4 (12-2023)
Abstract
Coastal areas represent the most vulnerable regions of the ocean. Thus, the identification and estimation of sedimentation rates in the sensitive coastal habitats of Qeshm and Lark islands were conducted during 2022-2023. The diving team identified three habitats consisting of natural structures in the north of Larak Island, characterized by the predominance of Acropora sp., and one habitat featuring flora and fauna originating from human-made structures (Doha Qeshm Jetty). These habitats, resembling those on Larak Island but on a smaller scale, were mapped using ArcGIS software 10.1. Three sediment traps were placed at 500-meter intervals in each station to cover each habitat comprehensively. The minimum and maximum sedimentation rates were measured at Larak Islands (St3) with 28 and Doha Qeshm Jetty with 196 (g/m2/day), respectively. Additionally, the minimum and maximum concentrations of suspended substances in the water column, ranging from 9.44 to 21.31 (mg/lit), were observed at these two stations during autumn. The freshness of Acropora sp. served as an indicator in all four habitats, potentially reflecting either the negligible impact of sedimentation rates on communities or the resilience of these communities to sedimentation during the study period
Dr Siamak Behzadi, Dr Ali Salarpouri, Dr Hadi Kouhkan, Dr Mohammadsedigh Mortazawi, Researcher Gholamali Akbarzadeh Chamachaei,
Volume 14, Issue 4 (2-2025)
Abstract
A promising approach for restoring fish stocks is the creation of artificial reefs (A.Rs). An important factor in site selection for these reefs is the study of Total Suspended Solids (TSS) and sedimentation rates, which offers valuable insights for the future of fish populations in the area. This study focused on three stations, with three repetitions at each, located in the eastern and western basins of the Cape of Jask, areas designated for artificial reef construction. Data was collected during the summer and winter seasons of 2023. The minimum and maximum sedimentation rates were observed at the fourth station in the eastern basin (winter 2023), with a mean of 10.98 (±0.8) g/m²/day, and at the third station in the western basin (summer 2023), with a mean of 17.34 (±0.92) g/m²/day. The average sedimentation rate in the eastern basin was 12.44 (±1.02) g/m²/day, while the western basin had a higher average of 15.77 (±0.81) g/m²/day, indicating greater sedimentation in the western basin. The highest sedimentation rate in the eastern basin was measured at station 5 during the summer of 2023 (76.4%), and the highest rate in the western basin occurred at station 4 in the winter of 2023 (86.5%). These sedimentation rates and TSS levels are crucial for both the future of settled and mobile aquatic communities (biotic future) and the longevity of the artificial reefs themselves (abiotic future). In later stages, these factors will play a key role in determining the success of the A.Rs.
