All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
Dedication This book is dedicated to those people who were affected by the 26 December 2004 earth... more Dedication This book is dedicated to those people who were affected by the 26 December 2004 earthquakes and tsunamis. Their lives will have changed forever and they will all need the help and compassion that the world can provide to recover. This book is also dedicated to the ...
Reef Complex (KRC) of the Gulf of Mannar, southeast coast of India were taken for this study to e... more Reef Complex (KRC) of the Gulf of Mannar, southeast coast of India were taken for this study to estimate the biophysical status of the coral reef ecosystems. This study was conducted between the years 2006 and 2008. About 25 sites all around the islands were chosen for this study. Among them, good Live Coral (LC) cover was recorded in fourteen sites. The other categories like Dead coral with algae, Exposed reef and Rubble, Seagrass, Algal assem-this study. The estimated sedimentation rate of this area was higher in seaward sides than the shoreward sides.
Gulf of Mannar in the southeast coast of India extends from Rameswaram Island in the north to Kan... more Gulf of Mannar in the southeast coast of India extends from Rameswaram Island in the north to Kanyakumari in the south. It has a chain of 21 islands stretching from Mandapam to Tuticorin to a distance of 140 km along the coast. Each one of the islands is located anywhere between 2 and 10 km from the mainland. The Gulf of Mannar Biosphere Reserve was set up on 18th February 1989 jointly by the Government of India and the state of Tamilnadu. The government of Tamilnadu in G.O. M.S. No 962 dated 10th September 1986 notified under section 35(1) of the Wildlife (Protection) Act 1972 the intention to declare the 21 islands as Marine National Park for the purpose of protecting marine wildlife and its environment including depths of 3.5 fathoms on the bay side to 5 fathoms on the seaward side. The compilation of all available scientific literature in the form of an annotated bibliography of the Gulf of Mannar biosphere reserve has brought to light the existence of nearly 3,000 publications ...
Encrusting form of coral Montipora sp. belonging to the family Acroporidae, was found to settle o... more Encrusting form of coral Montipora sp. belonging to the family Acroporidae, was found to settle on vertically submerged biofouling test panels installed at Pudhumadam coastal waters in the Gulf of Mannar. No other types of corals were found to settle on these test panels. The recruitment and growth of the coral occurred during March and November. Only 2 % of the total number of test panels showed coral attachment. A range of 7-15 % of the surface area of the panels was covered by the coral growth. Out of four different types of test panels employed, the one which was made of concrete, showed no coral settlement.
Settlement inducing protein complex from Balanus amphitrite plays a vital role in their settlemen... more Settlement inducing protein complex from Balanus amphitrite plays a vital role in their settlement. Recently the protein sequence of this complex has been elucidated. However the three dimensional structure of this protein complex has not been elucidated yet. In this study, the three dimensional structure of a modeled SIPC using bioinformatics tools was discussed. Further the importance of Canonical and non-canonical interactions in the structural stability of this modeled protein was also studied. The study reveals that the number of conventional hydrogen bonding is higher than non-conventional hydrogen bonding to the structural stability of the proteins. Among all the amino acids in CH...OC, NH...OC and OH...O interactions, percentage contribution is higher in main chain-main chain interactions only. Among the cation-π interactions of modeled SIPC, Lys-Phe pair shows the highest cationπ interaction energy of –5.56 kcal/mol, however more number cation-π interactions are formed betw...
The Sharm Obhur reefs have predominantly been populated by soft corals. Notably, the highest soft... more The Sharm Obhur reefs have predominantly been populated by soft corals. Notably, the highest soft coral percentages were observed in the central region of the creek at Site 9 and Site 6, where anthropogenic activities are higher. Among the scleractinian corals, more non-acroporid corals such as Porites and Goniastrea were found at all study sites and were commonly observed in the creek entrance area. More acroporid corals were found at Site 7. The sedimentation rate of Sharm Obhur strongly influences the reef ecosystem. Site 9 continuously receives murky water from stormwater drainage channels and has the highest sedimentation rate in the creek, which kills most of the corals in the vicinity. Similarly, the dead end of Sharm Obhur (Site 8) also receives drainage water from the Wadi Al Kura channel, which makes this the second highest sedimentation zone of the creek. Although anthropogenic disturbances are higher in the creek, the diversity of the scleractinian corals is found to be remarkable. In this pilot study, 13 families, 34 genera and 66 species of scleractinian corals were identified.
Abstract The Andaman and Nicobar Islands are one of the Union Territories of India, located in th... more Abstract The Andaman and Nicobar Islands are one of the Union Territories of India, located in the eastern part of the Bay of Bengal. In 2010 summer, the increment in sea surface water temperature (up to 34° C) resulted in the bleaching of about 74% to 77% of corals in the South Andaman. During this event, coral species such as Acropora cerealis, A. humilis, Montipora sp., Favia pallida, Diploastrea sp., Goniopora sp. Fungia concinna, Gardineroseries sp., Porites sp., Favites abdita and Lobophyllia robusta were severely ...
ABSTRACT In this study we assessed the current status of coral reefs along the Saudi Arabian coas... more ABSTRACT In this study we assessed the current status of coral reefs along the Saudi Arabian coast of the Red Sea. Among the three growth forms of Acroporid corals, the branching forms were found to dominate in the Farassan Islands (44.55%±11.10% cover) followed by tabular forms in the Doga Islands (ranging between 18%±6.47% and 18.30%±9.47% cover). Digitate forms were rarely found along the coast except at Maqna. Among the five growth forms of non-Acroporid corals, we observed maximum cover of branching forms in the Yanbu offshore area (58.89%±15.11% cover) followed by the Jeddah coast (24.76%±14.04% cover). The Millepora spp., a non-Scleractinian coral, was abundant at all the near-shore sites, such as Jeddah (10.70%±8.21%) and Al-Wajh (9.81%±6.69%). The live coral cover (including both Scleractinian and non-Scleractinian corals) of Saudi Red Sea coast was seen to be higher in the north and gradually decrease towards the south. Principal Component analysis showed that the contribution of Acroporid corals was greater in the southern region than in the northern and middle regions, but vice-versa in the case of non-Acroporid corals. Bray-Curtis cluster analysis categorized all the study sites into two major clusters with 60% similarity. Among them, one cluster-forming sites from Maqna to Masturah (Northern region) and the second one comprised the middle and southern regions (Jeddah to Farassan Islands), and one outlier Rabigh.
Three species of sponges and a tunicate were collected from Obhur creek of Jeddah coast for this ... more Three species of sponges and a tunicate were collected from Obhur creek of Jeddah coast for this bioactivity study. In order to assess the antifouling efficacy of selected marine organisms, methanolic extracts of these organisms were tested against different fouling bacterial forms and II-instar stage of the barnacle, Balanus amphitrite. Antibiosis, bioactivity and followed by multivariate analyses were carried out to check the efficacy of antifouling effect of the selected marine organisms. Principal component analysis revealed the exemplary antifouling efficacy of the sponge extracts of Stylissa sp. observed followed by Hyrtios sp. against bacterial forms in the laboratory study. De-trended correspondence analysis confirmed that the contribution of antifouling efficacy of the selected sponge extracts was observed to be more towards Bacillus sp., Vibrio sp. and Alteromonas sp. Moreover, the efficacy of Hyrtios sp. extract (20.430 μg mL−1) followed by Stylissa sp. (30.945 μg mL−1) showed higher against barnacle instar compared with other extracts in the bioactivity assay. Bray-Curtis cluster analysis under paired linkage categorized all the sponge extracts into one major cluster with 75% similarity, and one outlier tunicate. More than 80% similarity observed between Hyrtios sp. and Stylissa sp. Fourier transform infrared spectroscopy (FTIR) showed that the contribution of major peaks found in the marine organisms were towards sulfones, sulfoxides, cyanates and ketones.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
Dedication This book is dedicated to those people who were affected by the 26 December 2004 earth... more Dedication This book is dedicated to those people who were affected by the 26 December 2004 earthquakes and tsunamis. Their lives will have changed forever and they will all need the help and compassion that the world can provide to recover. This book is also dedicated to the ...
Reef Complex (KRC) of the Gulf of Mannar, southeast coast of India were taken for this study to e... more Reef Complex (KRC) of the Gulf of Mannar, southeast coast of India were taken for this study to estimate the biophysical status of the coral reef ecosystems. This study was conducted between the years 2006 and 2008. About 25 sites all around the islands were chosen for this study. Among them, good Live Coral (LC) cover was recorded in fourteen sites. The other categories like Dead coral with algae, Exposed reef and Rubble, Seagrass, Algal assem-this study. The estimated sedimentation rate of this area was higher in seaward sides than the shoreward sides.
Gulf of Mannar in the southeast coast of India extends from Rameswaram Island in the north to Kan... more Gulf of Mannar in the southeast coast of India extends from Rameswaram Island in the north to Kanyakumari in the south. It has a chain of 21 islands stretching from Mandapam to Tuticorin to a distance of 140 km along the coast. Each one of the islands is located anywhere between 2 and 10 km from the mainland. The Gulf of Mannar Biosphere Reserve was set up on 18th February 1989 jointly by the Government of India and the state of Tamilnadu. The government of Tamilnadu in G.O. M.S. No 962 dated 10th September 1986 notified under section 35(1) of the Wildlife (Protection) Act 1972 the intention to declare the 21 islands as Marine National Park for the purpose of protecting marine wildlife and its environment including depths of 3.5 fathoms on the bay side to 5 fathoms on the seaward side. The compilation of all available scientific literature in the form of an annotated bibliography of the Gulf of Mannar biosphere reserve has brought to light the existence of nearly 3,000 publications ...
Encrusting form of coral Montipora sp. belonging to the family Acroporidae, was found to settle o... more Encrusting form of coral Montipora sp. belonging to the family Acroporidae, was found to settle on vertically submerged biofouling test panels installed at Pudhumadam coastal waters in the Gulf of Mannar. No other types of corals were found to settle on these test panels. The recruitment and growth of the coral occurred during March and November. Only 2 % of the total number of test panels showed coral attachment. A range of 7-15 % of the surface area of the panels was covered by the coral growth. Out of four different types of test panels employed, the one which was made of concrete, showed no coral settlement.
Settlement inducing protein complex from Balanus amphitrite plays a vital role in their settlemen... more Settlement inducing protein complex from Balanus amphitrite plays a vital role in their settlement. Recently the protein sequence of this complex has been elucidated. However the three dimensional structure of this protein complex has not been elucidated yet. In this study, the three dimensional structure of a modeled SIPC using bioinformatics tools was discussed. Further the importance of Canonical and non-canonical interactions in the structural stability of this modeled protein was also studied. The study reveals that the number of conventional hydrogen bonding is higher than non-conventional hydrogen bonding to the structural stability of the proteins. Among all the amino acids in CH...OC, NH...OC and OH...O interactions, percentage contribution is higher in main chain-main chain interactions only. Among the cation-π interactions of modeled SIPC, Lys-Phe pair shows the highest cationπ interaction energy of –5.56 kcal/mol, however more number cation-π interactions are formed betw...
The Sharm Obhur reefs have predominantly been populated by soft corals. Notably, the highest soft... more The Sharm Obhur reefs have predominantly been populated by soft corals. Notably, the highest soft coral percentages were observed in the central region of the creek at Site 9 and Site 6, where anthropogenic activities are higher. Among the scleractinian corals, more non-acroporid corals such as Porites and Goniastrea were found at all study sites and were commonly observed in the creek entrance area. More acroporid corals were found at Site 7. The sedimentation rate of Sharm Obhur strongly influences the reef ecosystem. Site 9 continuously receives murky water from stormwater drainage channels and has the highest sedimentation rate in the creek, which kills most of the corals in the vicinity. Similarly, the dead end of Sharm Obhur (Site 8) also receives drainage water from the Wadi Al Kura channel, which makes this the second highest sedimentation zone of the creek. Although anthropogenic disturbances are higher in the creek, the diversity of the scleractinian corals is found to be remarkable. In this pilot study, 13 families, 34 genera and 66 species of scleractinian corals were identified.
Abstract The Andaman and Nicobar Islands are one of the Union Territories of India, located in th... more Abstract The Andaman and Nicobar Islands are one of the Union Territories of India, located in the eastern part of the Bay of Bengal. In 2010 summer, the increment in sea surface water temperature (up to 34° C) resulted in the bleaching of about 74% to 77% of corals in the South Andaman. During this event, coral species such as Acropora cerealis, A. humilis, Montipora sp., Favia pallida, Diploastrea sp., Goniopora sp. Fungia concinna, Gardineroseries sp., Porites sp., Favites abdita and Lobophyllia robusta were severely ...
ABSTRACT In this study we assessed the current status of coral reefs along the Saudi Arabian coas... more ABSTRACT In this study we assessed the current status of coral reefs along the Saudi Arabian coast of the Red Sea. Among the three growth forms of Acroporid corals, the branching forms were found to dominate in the Farassan Islands (44.55%±11.10% cover) followed by tabular forms in the Doga Islands (ranging between 18%±6.47% and 18.30%±9.47% cover). Digitate forms were rarely found along the coast except at Maqna. Among the five growth forms of non-Acroporid corals, we observed maximum cover of branching forms in the Yanbu offshore area (58.89%±15.11% cover) followed by the Jeddah coast (24.76%±14.04% cover). The Millepora spp., a non-Scleractinian coral, was abundant at all the near-shore sites, such as Jeddah (10.70%±8.21%) and Al-Wajh (9.81%±6.69%). The live coral cover (including both Scleractinian and non-Scleractinian corals) of Saudi Red Sea coast was seen to be higher in the north and gradually decrease towards the south. Principal Component analysis showed that the contribution of Acroporid corals was greater in the southern region than in the northern and middle regions, but vice-versa in the case of non-Acroporid corals. Bray-Curtis cluster analysis categorized all the study sites into two major clusters with 60% similarity. Among them, one cluster-forming sites from Maqna to Masturah (Northern region) and the second one comprised the middle and southern regions (Jeddah to Farassan Islands), and one outlier Rabigh.
Three species of sponges and a tunicate were collected from Obhur creek of Jeddah coast for this ... more Three species of sponges and a tunicate were collected from Obhur creek of Jeddah coast for this bioactivity study. In order to assess the antifouling efficacy of selected marine organisms, methanolic extracts of these organisms were tested against different fouling bacterial forms and II-instar stage of the barnacle, Balanus amphitrite. Antibiosis, bioactivity and followed by multivariate analyses were carried out to check the efficacy of antifouling effect of the selected marine organisms. Principal component analysis revealed the exemplary antifouling efficacy of the sponge extracts of Stylissa sp. observed followed by Hyrtios sp. against bacterial forms in the laboratory study. De-trended correspondence analysis confirmed that the contribution of antifouling efficacy of the selected sponge extracts was observed to be more towards Bacillus sp., Vibrio sp. and Alteromonas sp. Moreover, the efficacy of Hyrtios sp. extract (20.430 μg mL−1) followed by Stylissa sp. (30.945 μg mL−1) showed higher against barnacle instar compared with other extracts in the bioactivity assay. Bray-Curtis cluster analysis under paired linkage categorized all the sponge extracts into one major cluster with 75% similarity, and one outlier tunicate. More than 80% similarity observed between Hyrtios sp. and Stylissa sp. Fourier transform infrared spectroscopy (FTIR) showed that the contribution of major peaks found in the marine organisms were towards sulfones, sulfoxides, cyanates and ketones.
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