Islamic Azad University, Bandar Abbas Branchhttp://hdl.handle.net/1834/178002024-03-28T10:15:57Z2024-03-28T10:15:57ZDiversity of Coral Reef Fishes in Larak Island, Persian GulfKhatami, S.Valinassab, T.Tavakoli-Kolour, P.Yahyavi, M.Behzadi, S.http://hdl.handle.net/1834/404392021-07-24T02:12:54Z2012-01-01T00:00:00ZDiversity of Coral Reef Fishes in Larak Island, Persian Gulf
Khatami, S.; Valinassab, T.; Tavakoli-Kolour, P.; Yahyavi, M.; Behzadi, S.
The coral reefs are one of the most important and rich ecosystems in the world and are considered as major habitat for different species group of fishes. Fourteen islands are found in the northern Persian Gulf including Larak Island of which the coral regions around this island were determined and then for sampling, 6 stations were randomly selected by Manta Tow method in July to December 2010. The identification was conducted using Visual Census technique in 6 stations. A total of 54 species belong to 41 genera and 23 families were identified and amongst them the abundant species group belonged to Pomacentridae family with 11 species. The results indicated that however the stations were far from urban area; the species diversity has been higher.
2012-01-01T00:00:00ZMass coral bleaching in the northern Persian Gulf, 2012Kavousi, J.Tavakoli-Kolour, P.Mohammadizadeh, M.Bahrami, A.Barkhordari, A.http://hdl.handle.net/1834/404012021-07-24T02:09:14Z2014-09-01T00:00:00ZMass coral bleaching in the northern Persian Gulf, 2012
Kavousi, J.; Tavakoli-Kolour, P.; Mohammadizadeh, M.; Bahrami, A.; Barkhordari, A.
Coral bleaching events due to elevated temperatures are increasing in both frequency and magnitude worldwide. Mass bleaching was recorded at five sites in the northern Persian Gulf during August and September 2012. Based on available seawater temperature data from field, satellite and previous studies, we suggest that the coral bleaching threshold temperature in the northern Persian Gulf is between 33.5 and 34°C, which is about 1.5 to 2.5°C lower than that in the southern part. To assess the bleaching effects, coral genera counted during 60-minute dives were categorized into four groups including healthy, slightly bleached (<50% bleached tissue), mostly bleached (>50% bleached tissue) and fully bleached colonies. The anomalously high sea surface temperature resulted in massive coral bleaching (~84% coral colonies affected). Acropora spp. colonies, which are known as the most vulnerable corals to thermal stress, were less affected by the bleaching than massive corals, such as Porites, which are among the most thermo-tolerant corals. Turbid waters, suggested as coral refugia against global warming, did not protect corals in this study since most affected corals were found in the most turbid waters. The 2012 bleaching in the northern Persian Gulf was relatively strong from the viewpoint of coral bleaching severity. Long-term monitoring is needed to understand the actual consequences of the bleaching event on the coral reefs and communities.
2014-09-01T00:00:00ZOutbreak of growth anomalies in coral communities of Qeshm Island, Persian GulfTavakoli-Kolour, P.Kavousi, J.Rezai, H.http://hdl.handle.net/1834/404002021-07-24T02:09:08Z2015-01-01T00:00:00ZOutbreak of growth anomalies in coral communities of Qeshm Island, Persian Gulf
Tavakoli-Kolour, P.; Kavousi, J.; Rezai, H.
Reports on the outbreaks of coral diseases are on the rise, stating that diseases are considered to be one of the main drives in the decline of global coral reefs. In this study, the outbreak of growth anomalies (GAs) in coral communities of the south of Qeshm Island in the Persian Gulf is reported. Despite a previous report on the localized GAs on a few colonies, this is the first report of GA outbreak from the Persian Gulf, in which 28 ± 11 % (±SE) and 21 ± 13 % of P. daedalea and Porites colonies contracted GAs in July 2012. A year later, we recorded GAs on 37 ± 07 % of P. daedalea and 23 ± 12 % of Porites colonies. Pearson’s correlation test showed a strong positive relationship between coral colony size and the number of GAs (r = 0.907, p\0.05). Further investigation is needed to understand the cause of GAs, their progress trend, and prospective impacts on the coral communities at our studied site.
2015-01-01T00:00:00ZIdentification, distribution and species richness goby fishes (Perciformes: Gobiidae) in coastal water at Larak Island (Persian Gulf)Tavakoli-Kolour, ParvizValinassab, T.Khatami, S.Yhyavi, M.Behzadi, S.http://hdl.handle.net/1834/403992021-07-24T02:09:02Z2012-05-22T00:00:00ZIdentification, distribution and species richness goby fishes (Perciformes: Gobiidae) in coastal water at Larak Island (Persian Gulf)
Tavakoli-Kolour, Parviz; Valinassab, T.; Khatami, S.; Yhyavi, M.; Behzadi, S.
2012-05-22T00:00:00Z