cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota semarang,
Jawa tengah
INDONESIA
ILMU KELAUTAN: Indonesian Journal of Marine Sciences
Published by Universitas Diponegoro
ISSN : 08537291     EISSN : 24067598     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
ILMU KELAUTAN: Indonesian Journal of Marine Sciences (IJMS) is dedicated to published highest quality of research papers and review on all aspects of marine biology, marine conservation, marine culture, marine geology and oceanography.
Arjuna Subject : -
Articles 763 Documents
 73   74   75   76   77 
Morphometric Features of Noctiluca scintillans from Jakarta Bay Radixa Radhya Ramadhan Haryanto; Meutia Samira Ismet; Adriani Sunuddin; Inna Puspa Ayu; Muhammad Izzat Nugraha; Alfaiz Arselan; Kesha Mufthi Java Tanaya; Dea Fauzia Lestari; Dondy Arafat; Nadya Cakasana; Beginer Subhan
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 2 (2026): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.31.2.133-144

Abstract

Noctiluca scintillans is a mixotrophic dinoflagellate commonly associated with eutrophic coastal systems and bloom dynamics. This study aims to characterize the morphometric variability of N. scintillans in Jakarta Bay, a tropical coastal environment strongly influenced by anthropogenic nutrient enrichment, and to evaluate how cellular morphology reflects functional and ecological responses under eutrophic conditions. Plankton samples were collected in February 2024 and analyzed using high-resolution microscopy to quantify key morphometric traits, including cell diameter, biovolume, aspect ratio, surface area-to-volume (SA:V) ratio, and nucleus-to-cytoplasm (N:C) ratio. Differences between red (RNS) and green (GNS) morphotypes were assessed using non-parametric statistical analyses, and preserved measurements were corrected to estimate live cell size. A total of 121 cells were analyzed, with RNS overwhelmingly dominating the population. RNS exhibited significantly larger cell diameter and volume than GNS, while SA:V ratios differed significantly between morphotypes, indicating functional differences in size-related morphology. In contrast, aspect ratio did not differ significantly, suggesting overall conservation of cell shape across morphotypes. Estimated live cell sizes indicate that N. scintillans populations in Jakarta Bay are dominated by relatively small cells compared to those reported from temperate regions. Variability in the N:C ratio further suggests heterogeneity in cellular physiological states within the population. Overall, these findings establish a morphometric baseline for N. scintillans in Jakarta Bay and highlight the value of morphometric traits as integrative indicators of physiological variability and environmental forcing in tropical eutrophic coastal systems.
Long-Term Monitoring of Carbon Dynamics and Mangrove Health Using Remote Sensing: A Study of Balikpapan Bay, Indonesia A. A. Md. Ananda Putra Suardana; Nanin Anggraini; Nugraheni Setyaningrum; Muhammad Rizki Nandika; Azura Ulfa; Devica Natalia Br Ginting; Kuncoro Teguh Setiawan; Ratih Dewanti Dimyati
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 2 (2026): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.31.2.195-208

Abstract

Mangrove ecosystems provide critical ecological services, including supporting coastal fisheries, protecting shorelines, and functioning as significant carbon sinks within the global carbon cycle. These ecosystems play a substantial role in climate change mitigation, as they are capable of sequestering up to three times more carbon dioxide (CO₂) than terrestrial forests. Given increasing anthropogenic pressures and environmental change, continuous monitoring of mangrove health is essential to sustain these ecological functions and ecosystem services. Remote sensing technology offers a cost-effective and efficient approach for large-scale assessment, spatial analysis, and long-term monitoring of mangrove conditions. This study utilized cloud-free Landsat-8 imagery from 2013 to 2020 to evaluate mangrove health in Balikpapan Bay using the Mangrove Health Index (MHI), which classifies conditions into three categories: excellent, moderate, and poor. Carbon storage was estimated using a model integrating vegetation indices with Above-Ground Carbon (AGC). The results revealed a fluctuating yet overall positive trend in mangrove health, with the “excellent” category increasing by 1.023% (174.78 ha), while the “poor” category decreased by 1.098% (187.67 ha) over the study period. AGC values exhibited a comparable pattern, reaching a peak of 375.54 Mg.ha-1 in 2018 (mean: 125.85 Mg.ha-1). A strong positive correlation (r = 0.994) was observed between estimated mangrove health and AGC values, indicating that healthier mangrove ecosystems possess greater carbon sequestration potential. These findings highlight the importance of sustained monitoring and adaptive management strategies to support mangrove conservation and strengthen their contribution to climate change mitigation at regional and landscape management and policy scales.
Effects of Maternal Tissue Mortality on the Early Development of Acropora tenuis Nurfaida Salam Manibpel Dumato; Christine C. Baran; Maria Vanessa Baria-Rodriguez
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 2 (2026): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.31.2.145-158

Abstract

As coral reefs face persistent compounded pressure from anthropogenic and environmental stressors, there is a need to assess the capacity of existing colonies on the reef to produce viable offspring. This study evaluated the impacts of maternal health, characterized by tissue mortality, on the reproductive outcomes and early development of Acropora tenuis, a vital reef-building species in the Indo-Pacific region. Specifically, this study focused on the fertilization success, larval development, larval survival, and settlement behavior of individually crossed A. tenuis colonies. In April 2024, ten colonies were collected from Caniogan Reef in the Bolinao-Anda Reef Complex, northwestern Philippines. Six colonies were categorized as healthy (0% tissue mortality) while four exhibited varying degrees of tissue mortality (10-40%). On April 27, four healthy and two unhealthy colonies spawned, resulting in three healthy and two unhealthy crosses, respectively. Results showed that Healthy crosses had higher fertilization success and normal larvae than Unhealthy crosses (Two-way ANOVA, P < 0.05), highlighting the influence of maternal fitness on offspring viability. Larval survival of both maternal health conditions did not vary over 10 days. Lastly, although CCA treatments initially improved settlement rates for larvae from both maternal health conditions, further analysis showed no significant differences over time, indicating that maternal health did not directly affect larval settlement during the experiment. These results underscore the vital importance of maternal health in producing viable gametes under compounded environmental and anthropogenic stresses, emphasizing the need to prioritize coral health in sexual propagation for coral culture and restoration. 

Page 77 of 77 | Total Record : 763

 73   74   75   76   77 

Filter by Year

2001 2026


Reset
Filter By Issues
All Issue Vol 31, No 2 (2026): Ilmu Kelautan Vol 31, No 1 (2026): Ilmu Kelautan Vol 30, No 3 (2025): Ilmu Kelautan Vol 30, No 2 (2025): Ilmu Kelautan Vol 30, No 1 (2025): Ilmu Kelautan Vol 29, No 4 (2024): Ilmu Kelautan Vol 29, No 3 (2024): Ilmu Kelautan Vol 29, No 2 (2024): Ilmu Kelautan Vol 29, No 1 (2024): Ilmu Kelautan Vol 28, No 4 (2023): Ilmu Kelautan Vol 28, No 3 (2023): Ilmu Kelautan Vol 28, No 2 (2023): Ilmu Kelautan Vol 28, No 1 (2023): Ilmu Kelautan Vol 27, No 4 (2022): Ilmu Kelautan Vol 27, No 3 (2022): Ilmu Kelautan Vol 27, No 2 (2022): Ilmu Kelautan Vol 27, No 1 (2022): Ilmu Kelautan Vol 26, No 4 (2021): Ilmu Kelautan Vol 26, No 3 (2021): Ilmu Kelautan Vol 26, No 2 (2021): Ilmu Kelautan Vol 26, No 1 (2021): Ilmu Kelautan Vol 25, No 4 (2020): Ilmu Kelautan Vol 25, No 3 (2020): Ilmu Kelautan Vol 25, No 2 (2020): Ilmu Kelautan Vol 25, No 1 (2020): Ilmu Kelautan Vol 24, No 4 (2019): Ilmu Kelautan Vol 24, No 3 (2019): Ilmu Kelautan Vol 24, No 2 (2019): Ilmu Kelautan Vol 24, No 1 (2019): Ilmu Kelautan Vol 23, No 4 (2018): Ilmu Kelautan Vol 23, No 3 (2018): Ilmu Kelautan Vol 23, No 2 (2018): Ilmu Kelautan Vol 23, No 1 (2018): Ilmu Kelautan Vol 22, No 4 (2017): Ilmu Kelautan Vol 22, No 3 (2017): Ilmu Kelautan Vol 22, No 2 (2017): Ilmu Kelautan Vol 22, No 1 (2017): Ilmu Kelautan Vol 21, No 4 (2016): Ilmu Kelautan Vol 21, No 3 (2016): Ilmu Kelautan Vol 21, No 2 (2016): Ilmu Kelautan Vol 21, No 1 (2016): Ilmu Kelautan Vol 20, No 4 (2015): Ilmu Kelautan Vol 20, No 3 (2015): Ilmu Kelautan Vol 20, No 2 (2015): Ilmu Kelautan Vol 20, No 1 (2015): Ilmu Kelautan Vol 19, No 4 (2014): Ilmu Kelautan Vol 19, No 3 (2014): Ilmu Kelautan Vol 19, No 2 (2014): Ilmu Kelautan Vol 19, No 1 (2014): Ilmu Kelautan Vol 18, No 4 (2013): Ilmu Kelautan Vol 18, No 3 (2013): Ilmu Kelautan Vol 18, No 2 (2013): Ilmu Kelautan Vol 18, No 1 (2013): Ilmu Kelautan Vol 17, No 4 (2012): Ilmu Kelautan Vol 17, No 3 (2012): Ilmu Kelautan Vol 17, No 2 (2012): Ilmu Kelautan Vol 17, No 1 (2012): Ilmu Kelautan Vol 16, No 4 (2011): Ilmu Kelautan Vol 16, No 3 (2011): Ilmu Kelautan Vol 16, No 2 (2011): Ilmu Kelautan Vol 16, No 1 (2011): Ilmu Kelautan Vol 15, No 4 (2010): Ilmu Kelautan Vol 15, No 3 (2010): Ilmu Kelautan Vol 15, No 2 (2010): Ilmu Kelautan Vol 15, No 1 (2010): Ilmu Kelautan Vol 14, No 4 (2009): Jurnal Ilmu Kelautan Vol 14, No 3 (2009): Jurnal Ilmu Kelautan Vol 14, No 2 (2009): Jurnal Ilmu Kelautan Vol 14, No 1 (2009): Jurnal Ilmu Kelautan Vol 13, No 4 (2008): Jurnal Ilmu Kelautan Vol 13, No 3 (2008): Jurnal Ilmu Kelautan Vol 13, No 2 (2008): Jurnal Ilmu Kelautan Vol 13, No 1 (2008): Jurnal Ilmu Kelautan Vol 12, No 4 (2007): Jurnal Ilmu Kelautan Vol 12, No 3 (2007): Jurnal Ilmu Kelautan Vol 12, No 2 (2007): Jurnal Ilmu Kelautan Vol 12, No 1 (2007): Jurnal Ilmu Kelautan Vol 11, No 4 (2006): Jurnal Ilmu Kelautan Vol 11, No 3 (2006): Jurnal Ilmu Kelautan Vol 11, No 2 (2006): Jurnal Ilmu Kelautan Vol 11, No 1 (2006): Jurnal Ilmu Kelautan Vol 10, No 4 (2005): Jurnal Ilmu Kelautan Vol 10, No 3 (2005): Jurnal Ilmu Kelautan Vol 10, No 2 (2005): Jurnal Ilmu Kelautan Vol 10, No 1 (2005): Jurnal Ilmu Kelautan Vol 9, No 4 (2004): Jurnal Ilmu Kelautan Vol 9, No 3 (2004): Jurnal Ilmu Kelautan Vol 9, No 2 (2004): Jurnal Ilmu Kelautan Vol 9, No 1 (2004): Jurnal Ilmu Kelautan Vol 7, No 3 (2002): Jurnal Ilmu Kelautan Vol 7, No 2 (2002): Jurnal Ilmu Kelautan Vol 7, No 1 (2002): Jurnal Ilmu Kelautan Vol 6, No 4 (2001): Jurnal Ilmu Kelautan More Issue