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Journal of Earth Kingdom
Published by Institute for Advanced Science, Social, and Sustainable Future
ISSN : -     EISSN : 30249821     DOI : -
Core Subject : Science, Social,
Earth & Planetary Sciences Environmental Science
Journal of Earth Kingdom (JEK) is a half-yearly global journal producing optimal peer-reviewed research on the strength of authenticity, actuality, and accessibility. JEK also provides authoritative, sharp, and grounded interpretations that can be utilized by society as a whole. The Journal of Earth Kingdom (JEK) contains original papers, research articles, and critical reviews. In addition, we produce videos related to our research publication. We also create editorial content, such as scientific responses and analysis of current news and trending topics. We will deliver it in the form of articles and videos as well. Topics covered by this journal feature but are not limited to: Animal science/Zoology Plant/Botanical Science Ecology, Evolution, Behavior and Systematics Geography, Planning and Development Human geography Behavioral physiology Sociobiology Population biology Navigation and migration Biomedicine
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 30 Documents
 1   2   3 
Peatland wetness as an indicator of fire occurrence in Forest and Land Fires (FLFs) Prayoga, M. Bayu Rizky; Karuniasa, Mahawan; Frimawaty, Evi
Journal of Earth Kingdom Vol. 2 No. 1: (July) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i1.2024.873

Abstract

Background: Peatland ecosystems play an important role in the hydrological cycle and carbon cycling. In Indonesia, peatlands store about 28.6 gigatonnes of carbon which is equivalent to 10 years of global fossil fuel emissions. Peatlands act as a water storage during wet seasons and slowly release water during dry seasons to maintain river discharges and hydrological balance. However, climate change induced prolonged drought has increased peatland dryness in recent decades which elevate the risks of unwanted peatland fires. During El Nino-induced drought in 2015, over 2.6 million hectares of forest and land burned, emitting 0.81–1.4 gigatonnes of greenhouse gasses. The extreme fires damaged biodiversity, degraded water quality and displaced thousands of locals. This study aimed to analyze peatland wetness as an indicator of fire occurrences in forest and land fires (FLFs) in Riau, Indonesia by examining the relationship between degree of peatland wetness derived from satellite imagery and hotspots data. Methods: Peatland wetness was estimated from microwave backscattering coefficients at several RadarSat synthetic aperture radar (SAR) wavelengths and cross validated with water table depth measurements from 120 monitoring wells. Hotspots data between 2015-2020 were obtained from NASA's MODIS active fire product. Findings: Preliminary results showed significant negative correlations between peatland wetness and numbers of hotspots in peatlands, with more hotspots occurring in drier peatlands compared to wetter ones. This implies that maintaining peatland hydrological functions through continuous saturation is pivotal to prevent severe peatland wildfires under future climate change. Conclusion: Conservation efforts to restore hydrological balance in degraded peatlands through re-wetting strategies are recommended. Further research utilizing machine learning algorithms to produce high-resolution peatland wetness maps can improve fire risk monitoring in peatlands. Novelty/Originality of this Study: This study introduces the novel concept of utilizing peatland wetness as a key indicator for predicting and mitigating forest and land fires in Indonesia, particularly in Riau Province. By combining peatland moisture and temperature data, the research establishes threshold values to better predict fire risks and guide timely mitigation efforts, thereby enhancing the efficiency and effectiveness of FLF response activities.
Determining the onset and cessation of seasonal rains in Shire Valley, Southern Malawi Valle, Mercy
Journal of Earth Kingdom Vol. 2 No. 1: (July) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i1.2024.892

Abstract

Background: Malawi's agricultural activities rely heavily on rainfall. Rain signals the start of a distribution of rain that is unsuitable for plant development, whereas lighting marks the end of rain's ability to support plants. Malawi's tropical savanna climate has a rainy season from November to April, accounting for 95% of total annual rainfall, and a dry season from May to October, with milder temperatures and occasional showers at higher elevations from May to July. Methods: This study examines the commencement and cessation of seasonal rainfall in the Shire Valley, southern Malawi, between 1990 and 2019. The objectives include identifying rainfall characteristics, examining trends in the start, closure, and length of the rainy season, and categorizing onset and narrative dates. The Department of Climate Change and Meteorological Services provided daily rainfall data, and dates were determined using R-Instat. Findings: Rain often begins in Nsanje on November 28, followed by Ngabu on December 7, and Nchalo on December 9. The advertising dates are comparable across stations: April 3 for Nchalo and Ngabu, and April 5 for Nsanje. While most years fall within the typical range, global phenomena like La Niña and El Niño can cause early or late results. Conclusion: These insights are crucial for sustainably managing and developing socioeconomic activities at the national and district levels in Malawi. Novelty/Originality of this Study: This study provides a comprehensive analysis of the onset and cessation dates of the rainy season, utilizing long-term rainfall data spanning from 1990 to 2019. This localized analysis addresses existing gaps in the understanding of regional rainfall characteristics, which is essential for enhancing agricultural planning and mitigating resource wastage in an area heavily reliant on rain-fed agriculture.
Hatching success rate of sea turtle in the north coast of Pinrang Regency, South Sulawesi Nyompa, Achmad Husein; Sulaeman, Haura Ainun; Masykur, Septian Fakhrulwahid; Bahri, Muhammad; Ayustina, Ratih
Journal of Earth Kingdom Vol. 2 No. 1: (July) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i1.2024.927

Abstract

Background: Turtles are endangered marine reptile species due to various factors, including hunting, habitat loss, and predation. Therefore, practical conservation efforts are essential to protect turtle populations. One effective conservation strategy is to transfer turtle eggs to safe semi-natural nests. Method: This study was conducted in Turtle Village, Pinrang Regency. Leatherback and Green Turtle eggs were collected from natural nests along the coast and transferred to semi-natural nests. Observations were made to measure the hatching success rate of the eggs, and factors such as temperature, incubation period, predators, microorganism development, and changes in egg position were also recorded and analyzed. Findings: The results showed that the hatching success rate of eggs in semi-natural nests reached 80.23%. The highest hatching percentage was 86.36%, and the lowest was 68.33%. Factors that influenced hatching success included temperature and incubation period while hatching failure was caused by predators, microorganism development, and changes in egg position. Conclusion: This study shows that semi-natural nests in Turtle Village have a high hatching success rate with supportive environmental conditions and proper egg transmission. This indicates that conservation efforts through egg transfer to semi-natural nests can effectively increase turtle populations. Novelty/Originality of this study: It contributes to turtle conservation by demonstrating the effectiveness of semi-natural nests in increasing the hatching success rate of Leatherback and Green Turtle eggs. This approach can serve as a model for turtle conservation programs in other areas facing similar challenges.
Mycorrhizal symbiosis and natural dye waste organic fertilizer: Enhancing growth and yield in Indigofera tinctoria Arista, Nor Isnaeni Dwi; Budiastuti, Maria Theresia Sri; Supriyono; Nurmalasari, Aprilia Ike; Setyaningrum, Desy; Manurung, Ida Rumia
Journal of Earth Kingdom Vol. 2 No. 1: (July) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i1.2024.930

Abstract

Background: Indigofera tinctoria, commonly known as true indigo, is a plant widely used in the textile industry for its natural indigo dye, which produces a rich blue color for fabrics. I. tinctoria, known for its natural bluish-purple dye, generates 10% dye and 90% waste during extraction, requiring effective waste management. This study aimed to optimize organic fertilizer and mycorrhiza doses from I. tinctoria  waste for enhancing soil fertility in arid regions. Methods: The study was conducted from May to December 2020 in Puron Village, Bulu District, Sukoharjo Regency. A factorial Completely Randomized Block Design (CRBD) with 2 factors was employed. The first factor consisted of 5 levels of I. tinctoria  organic fertilizer treatments: 0, 100, 200, 300, and 400 g per plant. The second factor included 3 levels of mycorrhiza treatments: 0, 10, and 20 g per plant. Variables observed included mycorrhizal infection on roots, plant growth rate, and yield (fresh leaf and shoot weight of I. tinctoria ). Data analysis utilized ANOVA at a 5% significance level followed by Duncan Multiple Range Test (DMRT). Results: The results indicated that organic fertilizer from natural dye waste at a dosage of 200 g per plant increased the percentage of mycorrhizal-infected roots and boosted shoot weight by 63.27% at 8 weeks after planting (WAP). Mycorrhiza at 10 g per plant increased mycorrhizal infection percentage and enhanced shoot weight by 45.98% at 4 WAP. The combination of I. tinctoria  extraction waste organic fertilizer at 200 g per plant and mycorrhizal at 10 g per plant showed interaction, significantly increasing the growth of root nodules of I. tinctoria by 84.04% at 12 WAP. Conclusion: The integration of organic fertilizer derived from indigo dye waste and mycorrhiza presents a promising strategy for enhancing I. tinctoria  growth and productivity. Novelty/Originality of this Study: This study is distinctive in its demonstration of the effective use of I. tinctoria  extraction waste as an organic fertilizer, aligning with zero-waste principles and contributing to improvements in plant growth and soil fertility. Furthermore, it investigates the synergistic effects of mycorrhizal associations on enhancing nutrient absorption and overall productivity of I. tinctoria , an aspect that has not been thoroughly explored in prior research.
Analysis of total biomass, carbon stock and carbon dioxide uptake in Kandelia candel stands Risti, Saulimita; Sarno; Andarini S., Raras Nidya
Journal of Earth Kingdom Vol. 2 No. 1: (July) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i1.2024.942

Abstract

Background: Mangrove ecosystems play a crucial role in mitigating climate change through carbon sequestration. This study aimed to quantify the biomass, carbon stock, and carbon dioxide uptake of Kandelia candel stands on Payung Island, South Sumatra, Indonesia. Methods: Non-destructive sampling was conducted at two stations using 10x10 m plots along 50 m transects. Tree diameter was measured and allometric equations were used to estimate biomass and carbon stocks. Environmental parameters were also recorded. Finding: The highest biomass (193.69 tons/ha), carbon stock (89.11 tons C/ha), and CO2 uptake (320.04 tons CO2/ha) were found at Station II, correlating with larger average tree diameters. Environmental conditions, including salinity (0‰), pH (7.0), temperature (24-28°C), and humidity (90-91%), were favorable for K. candel growth. The substantial carbon storage demonstrates the importance of these stands for climate change mitigation. Conclusion: This study provides valuable data on the carbon sequestration potential of K. candel in a unique estuarine setting, contributing to our understanding of mangrove ecosystems' role in global carbon cycles and informing conservation strategies. Novelty/Originality of this Study: This study focuses on quantifying the biomass, carbon stocks, and CO₂ uptake of Kandelia candel stands within the unique estuarine ecosystem of Payung Island, South Sumatra. By providing species-specific data on K. candel—a mangrove species that has been relatively underexplored—this research addresses a significant knowledge gap and enhances our understanding of its role in carbon sequestration.
Utilization of POME waste as a renewable energy source in the life cycle concept of palm oil biodiesel Paminto, Ari Kabul
Journal of Earth Kingdom Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i2.2025.1276

Abstract

Background: In 2024, Indonesia, an importer of crude oil and fuel, is shifting focus to renewable energy as fossil fuel production declines. This research aims to develop a life cycle concept for biodiesel production from palm oil, addressing environmental concerns related to emissions from FFB, CPO, and biodiesel production processes. Methods: The method used in this research is a combination of quantitative LCA (Life Cycle Assessment) and AHP (Analytical Hierarchy Process) along with qualitative methods. Findings:  This research identifies and evaluates the alternative utilization of Palm Oil Mill Effluent (POME) waste with certain priority weights. The results showed that biodiesel production from palm oil requires various significant inputs, such as NPK fertilizer, herbicides, water, diesel, and Crude Palm Oil (CPO), resulting in environmental emissions in the form of CO2 of 1489 Kg CO2 (eq) per ton of biodiesel, as well as contributions to eutrophication and acidification. The LCI (Life Cycle Inventory) analysis also identified that the largest CO2 emissions came from POME waste (53%), followed by NPK fertilizer (23%), methanol (18%), and diesel oil (7%), while eutrophication and acidification indicated significant contributions from NPK fertilizer, methanol, diesel oil, and POME waste. These findings confirm the importance of utilizing POME waste as an optimal step to reduce CO2 emissions with a potential reduction of up to 667.2 Kg CO2 through a more sustainable biodiesel production life cycle concept. Conclusion: From this result, researchers recommend that palm oil companies start replacing chemical fertilizers with organic fertilizers to reduce environmental impacts, and encourage the utilization of POME waste at Palm Oil Mills as a source of biogas for renewable energy. At the biodiesel industry level, increasing the methanol recycling rate is proposed to improve efficiency and reduce emissions at the downstream stage of biodiesel production. Novelty/Originality of this article: This study identifies and evaluates alternatives for utilizing Palm Oil Mill Effluent (POME) waste with certain priority weights.
Community structure of Crabs (Crustacea: Decapoda): Response to vegetation variation and environmental parameters in mangrove ecosystems Putri Liani Aliwu; Baderan, Dewi Wahyuni K.; Regina Valentina Aydalina; Zuliyanto Zakaria; Marini Susanti Hamidun
Journal of Earth Kingdom Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i2.2025.1440

Abstract

Background: Mangrove ecosystems are crucial for maintaining biodiversity, including crab communities, which are vital to the stability of these ecosystems. Crabs contribute to nutrient cycling and the food web, reinforcing the overall ecological health of coastal habitats. This study focuses on the crab communities in the mangrove area of Tabongo Village, Dulupi District, Boalemo Regency, examining how environmental conditions affect their distribution and diversity. Methods: The research involved surveys at three stations representing different mangrove vegetation conditions. Crab species were identified and their diversity and abundance recorded. Environmental parameters, such as temperature, salinity, and pH, were measured, and the diversity index (H') was calculated to assess species diversity and the relationship between crab communities  and environmental factors. Findings: A total of 11 crab species from 4 families were identified, including Uca (Paraleptuca) annulipes and Ocypode ceratophthalmus. The diversity index ranged from 1.3 to 1.6, indicating moderate diversity. Environmental conditions, with temperatures between 32–34 °C, salinity from 13–19 ppt, and pH from 6.5 to 7, were conducive to crab survival. Station III, with healthier mangrove vegetation, supported greater crab diversity and abundance compared to degraded stations. Conclusion: The study highlights the crucial role of healthy mangrove ecosystems in sustaining crab biodiversity and ecosystem stability. It underscores the importance of mangrove conservation for maintaining biodiversity and protecting coastal ecosystems from degradation. Novelty/Originality of this article: By linking the health of mangrove ecosystems to crab diversity and abundance, it emphasizes the direct impact of environmental factors on crab populations. The findings highlight the importance of mangrove conservation not only for species richness but also for maintaining the ecological balance in coastal ecosystems, offering valuable data for future biodiversity management and conservation efforts.
Ecosystem-based mangrove conservation strategies and the role of communities for sustainable management Sitiningrum, Diah Sabatini
Journal of Earth Kingdom Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i2.2025.1476

Abstract

​​​Background: Mangrove ecosystems provide essential ecological, economic, and social benefits but face significant degradation from human and natural pressures. This study analyzes ecosystem-based conservation strategies in Muara Gembong District, focusing on integrating conservation with sustainable economic activities. Methods: A qualitative descriptive approach was employed through literature reviews and field observations, examining ecotourism and silvofishery systems, community involvement, and institutional capacity. Findings: Results highlight the importance of community participation in mangrove conservation through ecotourism and silvofishery systems. Key challenges include economic pressures, sectoral conflicts, weak institutional capacity, and limited technology. Collaboration among stakeholders, supported by education and policy reinforcement, is essential for success. Conclusion: A holistic approach combining ecological, social, and economic aspects is vital for sustainable mangrove conservation in Muara Gembong. Novelty/Originality of this article: This study integrates ecological, social, and economic dimensions into a cohesive conservation strategy, emphasizing community participation and collaborative governance.
Analysis of primary productivity and phytoplankton abundance across coastal ecosystems: Implications for sustainable aquaculture and ecosystem management Dongoran, Khoirul Zaman; Nyompa, Achmad Husein
Journal of Earth Kingdom Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i2.2025.1497

Abstract

Background: The coastal waters of Maros, encompassing ponds, estuaries, and open seas, exhibit diverse environmental conditions influencing primary productivity and phytoplankton abundance. Understanding these variations is crucial for sustainable management of coastal ecosystems and the optimization of aquaculture activities. This study analyzed primary productivity and phytoplankton abundance across three distinct Methods: ecosystems: ponds, estuaries, and seas in the coastal waters of Maros. Sampling was conducted using a stratified approach, measuring key environmental parameters such as nutrient concentrations, salinity, and temperature. Phytoplankton abundance was quantified using microscopy, while primary productivity was assessed through light-dark bottle techniques. Results: The findings revealed significant differences in primary productivity and phytoplankton abundance among the ecosystems. Ponds exhibited the highest primary productivity due to elevated nutrient input from anthropogenic activities, while estuaries displayed moderate productivity influenced by fluctuating salinity and nutrient mixing. The sea, despite having lower productivity, showed higher phytoplankton diversity due to stable environmental conditions. Each ecosystem was dominated by distinct phytoplankton species adapted to their specific environmental characteristics. Conclusion: This study highlights the substantial impact of environmental factors on primary productivity and phytoplankton distribution in the coastal waters of Maros. The findings provide insights into the ecological dynamics of these ecosystems, emphasizing the importance of tailored management strategies to balance aquaculture practices and ecosystem sustainability. Novelty/Originality of this article: This research provides a comprehensive comparative analysis of primary productivity and phytoplankton abundance across three interconnected ecosystems in Maros, offering novel insights into their ecological interactions and implications for sustainable aquaculture and coastal management.
The relationship between nitrate and phosphate nutrients and phytoplankton abundance in coastal waters: Implications for ecosystem dynamics Yunus, Muh.; Samawi, Muh. Farid; Jalil, Abd. Rasyid
Journal of Earth Kingdom Vol. 2 No. 2: (January) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jek.v2i2.2025.1627

Abstract

Background: The presence and abundance of phytoplankton are closely related to the physical and chemical parameters of water. Phytoplankton play a crucial role in aquatic ecosystems as primary producers and nutrient absorbers. This study aims to analyze the relationship between nitrate and phosphate nutrient content and the abundance of phytoplankton in the Arungkeke Waters, Jeneponto Regency. Methods: This research utilized a combination of field measurements and laboratory analysis. Direct measurements in the Arungkeke waters were conducted to assess surface water parameters, including temperature, salinity, current velocity, transparency, and ph. Water samples were collected for laboratory analysis of phytoplankton composition and abundance, as well as nitrate and phosphate concentrations. Regression analysis was performed to determine the relationship between nutrient concentrations and phytoplankton abundance. Findings: The study identified two classes of phytoplankton present in the Arungkeke waters: Bacillariophyceae and Dinophyceae. Oceanographic parameters were measured, with temperature ranging from 28.3°C to 29.7°C, current velocity from 0.039 m/s to 0.073 m/s, salinity from 29.3 ppt to 32 ppt, transparency from 1.9 m to 2.3 m, and ph from 7.3 to 7.4. Nitrate concentrations ranged from 0.042 mg/L to 0.076 mg/L, while phosphate concentrations ranged from 0.046 mg/L to 0.056 mg/L. The regression analysis revealed a moderate relationship between phytoplankton abundance and nutrient concentrations, with an R² value of 0.44. Conclusions: The study concludes that phytoplankton abundance in the Arungkeke Waters is influenced by nitrate and phosphate concentrations, with a moderate correlation observed. The presence of Bacillariophyceae and Dinophyceae classes indicates the ecological significance of these waters as a primary production area. Novelty/Originality of this article: This study provides valuable insights into the interaction between nutrient dynamics and phytoplankton abundance in the Arungkeke Waters, which is a relatively understudied area. By identifying the classes of phytoplankton present and quantifying their relationship with key nutrients, this research contributes to a better understanding of the ecological processes in coastal waters.

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