scholarly journals Towards modeling the coral reef ecosystem response to multiple environmental factors: development of a coupled coral polyp and hydrodynamic-biogeochemical model

2020 ◽  
Vol 22 (1) ◽  
pp. 45-60
Author(s):  
Takashi NAKAMURA
Keyword(s):  
Coral Reef ◽  
Environmental Factors ◽  
Biogeochemical Model ◽  
Ecosystem Response ◽  
Coral Reef Ecosystem ◽  
Coral Polyp ◽  
Reef Ecosystem

THE COMPOSITION AND DISTRIBUTION OF BENTHIC FORAMINIFERA AT CORAL REEF ECOSYSTEM IN THOUSANDS ISLAND

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Lumban Nauli Lumban Toruan ◽  
Dedi Soedharma ◽  
Kresna Tri Dewi
Keyword(s):  
Coral Reef ◽  
Human Activities ◽  
Close Association ◽  
Mesh Size ◽  
Coral Reef Ecosystem ◽  
Composition Distribution ◽  
Benthic Foraminifers ◽  
High Nutrient ◽  
Binocular Microscope ◽  
Reef Ecosystem

Composition and distribution of foraminifers are affected by human activities and have close association with coral reef ecosystem. The aims of this research were to investigate the benthic foraminifers’ composition and distribution in sediment of coral reef ecosystem. Eleven stations of Karang Bongkok, Pramuka, and Onrust Island were observed in this study. The sediments were taken from surface substrate up to 2 cm under the substrate. Samples were washed on sieve with mesh size 0,063 mm, and then dried in oven with 50°C of temperature  for two hours. After separating from the sediment, the foraminifers were laid on foraminiferal slide and indentified using binocular microscope. The highest composition of symbiont-bearing foraminiferal assemblages which associated with reef ecosystem was in East Pramuka (78.17%) and the lowest was in South Onrust (21,83%). The opportunistic type had the highest composition in South Onrust (38.67%) and the lowest was in South Karang Bongkok. In west Pramuka had the highest composition of heterotrophic type (57.17%) and the lowest was in North Onrust (11.33%). Onrust Island was dominated by opportunistic type, indicating high nutrient. The highest amount of foraminifers’ taxa was found in Karang Bongkok with good coral reef coverage, while the lowest in Onrust facing with Jakarta Bay. Keywords: composition, distribution, benthic foraminifers, coral reef.

Measurement of the trophic level of fish in a coral reef ecosystem using stable isotopes

2013 ◽  
Vol 19 (1) ◽  
pp. 105-115 ◽  
Author(s):  
Guohuan YANG ◽  
Xingli SUN ◽  
Xiuqiong HOU ◽  
Chunliang CHEN
Keyword(s):  
Stable Isotopes ◽  
Coral Reef ◽  
Trophic Level ◽  
Coral Reef Ecosystem ◽  
Reef Ecosystem

Marine reserves, fisheries ban, and 20 years of positive change in a coral reef ecosystem

2021 ◽  
Author(s):  
Peter J. Mumby ◽  
Robert S. Steneck ◽  
George Roff ◽  
Valerie J. Paul
Keyword(s):  
Coral Reef ◽  
Marine Reserves ◽  
Positive Change ◽  
Coral Reef Ecosystem ◽  
Reef Ecosystem

Integrity evaluation and dynamic simulation of Xisha coral reef ecosystem

2021 ◽  
Vol 41 (10) ◽  
Author(s):  
王耕，董瑞，周腾禹，徐惠民，丁德文 WANG Geng
Keyword(s):  
Coral Reef ◽  
Dynamic Simulation ◽  
Coral Reef Ecosystem ◽  
Reef Ecosystem

Terrestrial Nutrients and Dissolved Organic Matter Input to the Coral Reef Ecosystem via Submarine Springs

2021 ◽  
Author(s):  
Dini Adyasari ◽  
Hannelore Waska ◽  
Kirstin Daehnke ◽  
Till Oehler ◽  
Atas Pracoyo ◽  
...  
Keyword(s):  
Organic Matter ◽  
Coral Reef ◽  
Dissolved Organic Matter ◽  
Coral Reef Ecosystem ◽  
Submarine Springs ◽  
Reef Ecosystem ◽  
Organic Matter Input

scholarly journals CONDITION OF CORAL AND REEF FISH IN THE LOCATION OF FISH CATCHING USING DYNAMITE FISHING IN KAPOPOSANG WATER PARK AND THE SURROUNDING SEA

2020 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Mahmudin Mahmudin ◽  
Chair Rani ◽  
Hamzah Hamzah
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Cover ◽  
Low Cost ◽  
Fish Abundance ◽  
Live Coral ◽  
Coral Reef Ecosystem ◽  
Control Location ◽  
Target Fish ◽  
Reef Ecosystem

Dynamite fishing is one of the causes of damage to the coral reef ecosystem in Indonesia. Fishing activities using explosives (dynamite fishing) occur because of the desire of fishermen to get a lot of catch with low cost in a short time. Kapoposang Water Park (WP) is a region rich in marine biological resources. However, dynamite fishing activities which are still found within the area have caused the coral reef ecosystem to be severely damaged. The results showed a lower difference in the percentage of live coral cover at dynamite fishing locations (DF1, DF2) compared to control locations (K1, K2). In addition, the highest average values of coral fish abundance were found at locations K1, DF1, and DF2. Conversely, the results of the analysis found the lowest fish abundance at the K2 location. Different from the average number of reef fish species that were higher at the control location (K1, K2) compared to dynamite fishing locations (DF1, DF2). For the target fish biomass there is no real difference between the control location and dynamite fishing.

scholarly journals KONDISI LINGKUNGAN DAN TERUMBU KARANG DI DAERAH PERLINDUNGAN LAUT PULAU PRAMUKA, KEPULAUAN SERIBU

2017 ◽  
Vol 3 (2) ◽  
pp. 115
Author(s):  
Andri Warsa ◽  
Baiq Ida Purnawati
Keyword(s):  
Coral Reef ◽  
Protected Area ◽  
Marine Protected Area ◽  
Marine Biota ◽  
Environmental Condition ◽  
Coral Reef Ecosystem ◽  
Fishing Activity ◽  
Coastal Resource ◽  
Line Intercept ◽  
Reef Ecosystem

Kawasan Kepulauan Seribu merupakan bagian dari wilayah Daerah Khusus Ibukota Jakarta, terletak pada posisi geografis antara 106°25’-106°40’ BT dan 05°24’-05°45’ LS. Daerah perlindungan laut adalah daerah yang ditutup secara permanen di mana semua kegiatan penangkapan ikan dan kegiatan lain dilarang. Tujuan penelitian ini untuk mengetahui kondisi lingkungan di daerah tersebut pada bulan April dan Juli 2007. Pengamatan kondisi ekosistem terumbu karang dilakukan dengan metode transek garis (line intercept transect) sepanjang 50 m sejajar garis pantai dan pengamatan kondisi oseanografi lima stasiun pengamatan. Hasil penelitian menunjukan kondisi oseanografi di daerah perlindungan laut Pulau Pramuka layak untuk kehidupan biota laut dengan konsentrasi oksigenterlarut berkisar antara 2,55-4,19 mg/L, salinitas berkisar antara 32-32,5o/oo, kecerahan berkisar antara 2-10 m, dan derajat keasaman (pH) berkisar antara 7,85-7,99. Kondisi kesehatan karang adalah sedang dan baik dengan persentase tutupan karang berkisar antara 30-75%. Seribu Islands region located at 106°25’-106°40’ E and 05°24’-05°45’ S which is a part of Jakarta Province. Marine protected area is a closed site permanently where extractive activity is prohibited, mainly fishing activity and the aim of this program is to conserve coastal resource. The aim of this research was to know environmental condition of Pramuka Island marine protected area at Seribu Islands. The research was done at marine protected area of Pramuka Island in April and July 2007. Monitoring of coral reef ecosystem was done with line intercept transect method along 50 m parallel with shore line and oceanography condition at 5 stations. The result of this research shown that oceanography condition at marine protected area of Pramuka Island was suitable for marine biota life with dissolved oxygen between 2.55-4.19 mg/L, salinity between 32-32.5o/oo, transparency between 2- 10 m, and pH between 7.5-7.99. Coral reef healthy condition is medium and good with percent covered between 30-75%.

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