Karizma Fahlevy | Bogor Agricultural University, Indonesia (original) (raw)

Papers by Karizma Fahlevy

Research paper thumbnail of Assessing fish community structure at two different coral reef depths around Seribu Islands, Jakarta

Jurnal Ilmu Kelautan Kepulauan, 2018

Coral reefs structure play important roles for reef fish assemblages. Coral coverage and reef fis... more Coral reefs structure play important roles for reef fish assemblages. Coral coverage and reef fish abundance are associated with the positive relationship. However, the relationship between reef fish abundance and composition and depth variation around Pramuka Island is poorly known. This study was carried out to investigate the biodiversity and the trophic level of fish communities between two different depths (3 and 10 m) around Pramuka Island regions (Pramuka Island and Sekati Island). The hard coral at the depth of 10 m within both study sites in Pramuka island held significantly higher percent cover than the depth of 3 m except in Dock 2 A total of 2620 individual fishes were counted, belonging to 58 species and 13 families. The fish community in 3 and 10 depth was dominated by omnivorous fishes. The multivariate analysis of fish abundance using the Bray Curtis similarity index and non-metric multidimensional scaling (NMDS) clearly showed the clustering of two different depths. The NMDS results showed that at the depth of 10 m are more clustered than 3 m depth. The present study results showed that the biodiversity of reef fishes around Pramuka Island seemed to be linked to the hard coral condition and depth.

Research paper thumbnail of Site and depth influence on reef structure and composition in Seribu Islands, Jakarta

Aceh Journal of Animal Science, 2017

The coral reefs structure and composition are influenced by environmental condition and depth. Th... more The coral reefs structure and composition are influenced by environmental condition and depth. Therefore, this study was conducted to find and examine the influence of site and depth on coral reef structures in Pramuka Island regions, Seribu Islands, located in the northern of Jakarta. The study was carried out from November to December 2016. The data was taken by Line Intercept Transect Method which is laid 20 meters x 3 replicated parallels with shoreline at the depth of 3 and 10 meters. The hard coral at the depth of 3 m within both study sites in Pramuka island held higher percent cover than the depth of 10 m except in North of Pramuka. Coral mortality index varied and ranged from 0.39 to 0.98. West of Pramuka Island dominant has the lowest value of mean number of families, genera, and life form. Percentage of hard coral cover, coral mortality index, mean number of family, genera, and life form differed significantly between sites. The different of depth only affecting the percentage of coral cover and mean number of life form. Corals have a limiting factor which are affected their development and growth.

Conference Presentations by Karizma Fahlevy

Research paper thumbnail of Penilaian struktur komunitas dan keterkaitan ikan terumbu pada terumbu karang di Pulau Tunda, Banten

Prosiding Seminar Nasional Ekosistem Perairan Teluk Lada dan Pulau Tunda, Nov 2017

Terumbu karang merupakan ekosistem yang memiliki peranan biofisik bagi beragam biota laut yang sa... more Terumbu karang merupakan ekosistem yang memiliki peranan biofisik bagi beragam biota laut yang salah satunya adalah ikan terumbu. Penelitian dilakukan pada bulan Mei 2017 di Pulau Tunda, Serang, Banten untuk mengetahui persentase tutupan karang keras dan menilai keterkaitannya dengan komposisi ikan terumbu. Pengamatan dilakukan dengan menggunakan metode Point Intercept Transect (PIT) untuk pengamatan terumbu karang dan Underwater Visual Cencus (UVC) untuk pengamatan ikan terumbu. Persentase tutupan karang terendah terletak di timur Pulau Tunda (36.67±4.06 %) dan tertinggi di Utara Pulau Tunda (58.67±4.26%). Terdapat perbedaan yang signifikan pada tutupan karang terhadap stasiun pengamatan (ANOVA, F=14.00, p<0.05), dan tidak terdapat perbedaan yang signifikan pada kelimpahan ikan dan indeks keanekaragaman terhadap stasiun pengamatan. Nilai korelasi tutupan karang dengan kelimpahan ikan (r=0.95) dan indeks keanekaragaman (r=0.99) di utara Pulau Tunda lebih tinggi daripada bagian timur. Sebanyak total 1004 individu ikan terumbu yang termasuk kedalam 85 spesies dan 22 famili telah teramati dengan jumlah spesies tertinggi ialah famili Pomacentridae (damselfishes) diikuti oleh famili Labridae (wrasses) dan Chaetodontidae (butterflyfishes). Spesies Pomacentrus alexanderae dan Pomacentrus moluccensis (Pomacentridae) berkontribusi di bagian timur, sedangkan di bagian utara adalah Chaetodon octofasciatus (Chaetodontidae) dan Scolopsis bilineata (Nemipteridae). Kelimpahan dan keanakeragaman ikan terumbu di Pulau Tunda memiliki hubungan dengan tutupan terumbu karang

Research paper thumbnail of Assessing fish community structure at two different coral reef depths around Seribu Islands, Jakarta

Jurnal Ilmu Kelautan Kepulauan, 2018

Coral reefs structure play important roles for reef fish assemblages. Coral coverage and reef fis... more Coral reefs structure play important roles for reef fish assemblages. Coral coverage and reef fish abundance are associated with the positive relationship. However, the relationship between reef fish abundance and composition and depth variation around Pramuka Island is poorly known. This study was carried out to investigate the biodiversity and the trophic level of fish communities between two different depths (3 and 10 m) around Pramuka Island regions (Pramuka Island and Sekati Island). The hard coral at the depth of 10 m within both study sites in Pramuka island held significantly higher percent cover than the depth of 3 m except in Dock 2 A total of 2620 individual fishes were counted, belonging to 58 species and 13 families. The fish community in 3 and 10 depth was dominated by omnivorous fishes. The multivariate analysis of fish abundance using the Bray Curtis similarity index and non-metric multidimensional scaling (NMDS) clearly showed the clustering of two different depths. The NMDS results showed that at the depth of 10 m are more clustered than 3 m depth. The present study results showed that the biodiversity of reef fishes around Pramuka Island seemed to be linked to the hard coral condition and depth.

Research paper thumbnail of Site and depth influence on reef structure and composition in Seribu Islands, Jakarta

Aceh Journal of Animal Science, 2017

The coral reefs structure and composition are influenced by environmental condition and depth. Th... more The coral reefs structure and composition are influenced by environmental condition and depth. Therefore, this study was conducted to find and examine the influence of site and depth on coral reef structures in Pramuka Island regions, Seribu Islands, located in the northern of Jakarta. The study was carried out from November to December 2016. The data was taken by Line Intercept Transect Method which is laid 20 meters x 3 replicated parallels with shoreline at the depth of 3 and 10 meters. The hard coral at the depth of 3 m within both study sites in Pramuka island held higher percent cover than the depth of 10 m except in North of Pramuka. Coral mortality index varied and ranged from 0.39 to 0.98. West of Pramuka Island dominant has the lowest value of mean number of families, genera, and life form. Percentage of hard coral cover, coral mortality index, mean number of family, genera, and life form differed significantly between sites. The different of depth only affecting the percentage of coral cover and mean number of life form. Corals have a limiting factor which are affected their development and growth.

Research paper thumbnail of Penilaian struktur komunitas dan keterkaitan ikan terumbu pada terumbu karang di Pulau Tunda, Banten

Prosiding Seminar Nasional Ekosistem Perairan Teluk Lada dan Pulau Tunda, Nov 2017

Terumbu karang merupakan ekosistem yang memiliki peranan biofisik bagi beragam biota laut yang sa... more Terumbu karang merupakan ekosistem yang memiliki peranan biofisik bagi beragam biota laut yang salah satunya adalah ikan terumbu. Penelitian dilakukan pada bulan Mei 2017 di Pulau Tunda, Serang, Banten untuk mengetahui persentase tutupan karang keras dan menilai keterkaitannya dengan komposisi ikan terumbu. Pengamatan dilakukan dengan menggunakan metode Point Intercept Transect (PIT) untuk pengamatan terumbu karang dan Underwater Visual Cencus (UVC) untuk pengamatan ikan terumbu. Persentase tutupan karang terendah terletak di timur Pulau Tunda (36.67±4.06 %) dan tertinggi di Utara Pulau Tunda (58.67±4.26%). Terdapat perbedaan yang signifikan pada tutupan karang terhadap stasiun pengamatan (ANOVA, F=14.00, p<0.05), dan tidak terdapat perbedaan yang signifikan pada kelimpahan ikan dan indeks keanekaragaman terhadap stasiun pengamatan. Nilai korelasi tutupan karang dengan kelimpahan ikan (r=0.95) dan indeks keanekaragaman (r=0.99) di utara Pulau Tunda lebih tinggi daripada bagian timur. Sebanyak total 1004 individu ikan terumbu yang termasuk kedalam 85 spesies dan 22 famili telah teramati dengan jumlah spesies tertinggi ialah famili Pomacentridae (damselfishes) diikuti oleh famili Labridae (wrasses) dan Chaetodontidae (butterflyfishes). Spesies Pomacentrus alexanderae dan Pomacentrus moluccensis (Pomacentridae) berkontribusi di bagian timur, sedangkan di bagian utara adalah Chaetodon octofasciatus (Chaetodontidae) dan Scolopsis bilineata (Nemipteridae). Kelimpahan dan keanakeragaman ikan terumbu di Pulau Tunda memiliki hubungan dengan tutupan terumbu karang