Article Per Year (5 Year)
p-Index From 2020 - 2025
1.288
P-Index
This Author published in this journals
All Journal Biotropika Jurnal Biologi Tropis Jurnal Pengabdian Magister Pendidikan IPA Jurnal Pendidikan dan Pengabdian Masyarakat Al-Aqlu : Jurnal Matematika, Teknik dan Sains REFORM : JURNAL PENDIDIKAN, SOSIAL DAN BUDAYA
Denianto Yoga Sativa
Fakultas Perikanan Universitas 45 Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

Published : 9 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Jurnal Biologi Tropis

 1 
Benthic Habitat Mapping Using Sentinel-2A Satellite Imagery in Serewe Bay Denianto Yoga Sativa; I Gede Nano Septian; Febrian Kusuma Atmanegara
Jurnal Biologi Tropis Vol. 22 No. 1 (2022): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i1.3157

Abstract

Serewe Bay is an important area for sustainable fisheries. This information on benthic habitats is important to know for sustainable management. However, at the moment there is no information on the distribution of benthic habitats in Serewe Bay. The research utilizes Sentinel 2A satellite imagery where the image used is obtained through the earthexplorer.usgs.gov website. Image data will be analyzed through several correction analysis processes, namely reflectance correction, sunglint, and water column or Lyzenga in order to obtain an image display that can be used to identify benthic habitats in Serewe Bay. In addition, a field data survey was also carried out to test the accuracy of the results of processing the Sentinel 2A satellite image of Serewe Bay. Image processing results show that there are 3 categories of benthic habitats, namely Seagrass, Sand and Mixed habitats in which there are macroalgae, dead coral, and coral fractures. The results of the field survey and accuracy calculations show that the accuracy of sentinel 2A image processing in Serewe Bay reaches 63.41% with the dominant benthic distribution consisting of seagrass, mixed benthic habitat and sand. Meanwhile, the calculation of the area of important benthic habitats such as seagrass beds in Serewe Bay can reach 156 Ha.
Growth and Survival Performance of Transplanted Acropora Fragment in a Nursery Floating Hamid; Lalu Samsul Rizal; Denianto Yoga Sativa
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4486

Abstract

The status of the condition of Indonesia's coral reefs is mostly categorized as moderate and damaged. Relatively inexpensive and easy-to-implement rehabilitation methods need to involve the participation of many stakeholders. The method of transplanting coral fragments by hanging (floating) from the surface of the water will be more efficient, especially in their maintenance. This study aims to investigate the most suitable water depth to support the growth and survival of the transplanted coral fragments. A non-factorial Completely Randomized Design (CRD) field experiment with 3 (three) treatments, namely different seedbed depths, 2 m, 4 m, and 6 m respectively. Each treatment was repeated 4 (four) times. The results of analysis of variance showed that the absolute growth rate of coral fragments transplanted by hanging from the surface of the water at different depths (2 m, 4 m, 6 m) showed no significant difference (P-value > 0.05). This shows that the environmental conditions at a depth of 2 m-6 m are relatively the same, so that on average all coral fragments have almost the same growth potential (0.29 cm/month). Meanwhile, the survival rate obtained is also very high (> 90%). These results confirm that the method of transplanting corals by hanging from the sea surface is technically feasible and gives good results. This will help many stakeholders to be involved in optimizing the economic potential value of coral reefs, as well as increasing participation in the conservation and rehabilitation of coral reefs.
Co-Authors Ahmad Fauzi Ardiana Rusianto Aryani Rahmawati Febrian Kusuma Atmanegara HAMID Hamid Hamid L. Achmad TanTilar W.S.K. Lalu Samsul Rizal Lalu Samsul Rizal Lalu Samsul Rizal, Lalu Samsul Luh Gede Sumahiradewi Mita Ayu Liliyanti Naning Dwi Sulystyaningsih Raismin Kotta Septian, I Gede Nano