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All Journal Tunas Geografi IJOEP : International Journal of Ecophysiology Bioscientist : Jurnal Ilmiah Biologi Jurnal Jeumpa
Aththorick, T Alief
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Social Sciences Other

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Journal : Tunas Geografi

 1 
Percentage of Live Coral Cover in The Regional Water Conservation Area of the Sawo – Lahewa Water Tourism Park, North Nias District Siregar, Zufriwandi; Barus, Ternala Alexander; Aththorick, T Alief
Tunas Geografi Vol 13, No 1 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i1.55178

Abstract

Coral reefs are vital ecosystems facing serious threats due to climate change and human activities. This research aims to evaluate the condition of live coral cover in the Sawo-Lahewa Aquatic Tourism Park (TWP) Regional Marine Conservation Area (KKPD), North Nias Regency, as an important step in conservation and sustainable management efforts. Data was collected at 8 research stations using the Underwater Photo Transect (UPT) method. The research results show that the condition of coral reefs in this area is in the damaged to moderate category, with the percentage of live coral cover ranging between 12.33-45.37% and an average of 26.65%. The highest percentage of coral cover was found on Sarangbaung Island (45.37%) in the medium category, followed by Makora Island (42.13%), Gita Island (35.35%), and Lafau Island (31.07%). Meanwhile, locations with the lowest cover in the damaged category include Gosobaohi_01 Island (18.25%), Gosobaohi_02 Island (15.60%), Sifahandro Sea Waters (13.13%), and Bengkuang Bay Waters (12.33%). This research also looks at the abundance of coral juveniles, coral fish, and megabenthos to provide a broad picture of the health of the coral reef ecosystem. The results of this research can become a scientific basis for developing more effective management strategies. Apart from that, it is also a form of supporting conservation efforts, helping restore damaged ecosystems, and increasing the resilience of coral reefs to future environmental threats.Keywords:  Coral Reefs, Regional Marine Conservation Area, North Nias
Neutralization of Galena Acid Mine Water Using CaO and CaCO₃ at PT Berkat Bhinneka Perkasa Zulhaji Sam, Taufik; Mukhlis, Mukhlis; Aththorick, T Alief; Harahap, Hamidah; Muzambiq, Said
Tunas Geografi Vol. 13 No. 2 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i2.58198

Abstract

The mining system implemented at PT. Berkat Bhinneka Perkasa is an underground mining system. The results from mining the metal mineral commodity black lead ore (PbS/Galena) are helpful in the battery industry, color pigments, ammunition, cable coatings, radiation protection, solder, and other materials that use Pb and Zn as basic ingredients. This research examines the neutralization of acid mine drainage using Tohor Lime (CaO) and Calcium Carbonate Lime (CaCO3). The methods used are survey and experimental techniques, where the survey involves field observations to determine observation points and collect data. In contrast, the experimental method includes laboratory analysis followed by data analysis. This research shows that acid mine wastewater with pH 4.74 and 240.20 ppm Fe²⁺ was effectively treated using quicklime, calcium carbonate, TKKS, and rice husk biochar. These ameliorants significantly increased pH and met the river water quality standards per Government Regulation 22 of 2021. Although active ferrous levels also increased, the effect was not statistically significant. However, excessive ferrous content can harm agricultural soils and plants, potentially causing iron toxicity.
Analysis of Coral Reef Cover in Nias Regency, North Sumatra Simaremare, Elisabet Rosevenny; Wahyuningsih, Hesti; Aththorick, T Alief
Tunas Geografi Vol. 13 No. 2 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i2.59317

Abstract

Marine and fisheries resources in the waters of Nias Regency are one of the sectors that drive the community's economy, especially in coastal areas. Coral reefs are one of the marine ecosystems in Nias Regency that have high ecological and economic value. This research aims to evaluate the environmental conditions of coral reefs in the Nias Regency Water Area, especially in the seascape tourism zone around the waters of Onolimbu Island and Musi Island as research locations. The research was conducted from March to May 2023 in the coastal waters of Nias Regency to collect ecological and socio-economic data. Coral cover analysis was carried out using underwater photo methods and classified based on condition categories set by the Ministry of Environment. The condition of coral reefs at this research location is in the damaged to moderate category (23.47-45.13%) with an average abundance of 31.54% and is included in the medium category. The percentage of coral reef life form types consists of Dead Coral Algae (DCA) (34.86%), Hard Coral (31.81%), Sands (15.73%), Recent Dead Coral (5.84%), and the rest are Rubble, Other Biota and Rock. Coral Reefs, Coral Cover, Nias Regency
The Potential of Greenhouse Gas (GHG) Emissions From Energy Consumption in Culinary MSME Panjaitan, Kiki Pratiwi; Husin, Amir; Aththorick, T Alief
Tunas Geografi Vol. 13 No. 2 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i2.65305

Abstract

The Earth's surface temperature increases each year due to activities carried out by individuals or companies. Calculating the carbon footprint is one way to determine the emissions generated by human activities. Micro, Small, and Medium Enterprise (MSME) business operators have the potential to contribute to the carbon footprints originating from the use of Liquefied Petroleum Gas (LPG), fuel, and electricity. This research serves as a preliminary analysis to understand MSMEs' GHG emissions from energy and fuel use and identify appropriate strategies to reduce their carbon footprint using a standardized calculation method. This research uses a carbon footprint calculation method based on the methodology established by the Intergovernmental Panel on Climate Change. The analysis results show that the most significant emission sources from culinary MSME activities are restaurants, with approximately 3,079 CO2eq/year, followed by fried chicken at an average of 2,682 CO2eq/year, and meatball soup at around 2,504 CO2eq/year. The MSME with the highest income is fried chicken, with an average monthly revenue of IDR 19,225,000, while the lowest income is from siomay at IDR 7,700,000 per month. Income has an impact of 93.3% on the carbon footprints. Management measures that can be taken include analyzing which stages of the production process require significant energy, so strategies can be formulated to reduce the emissions produced. Additionally, the government should promote carbon-saving movements and educate the public about energy-efficient household appliances.
Percentage of Live Coral Cover in The Regional Water Conservation Area of the Sawo “ Lahewa Water Tourism Park, North Nias District Siregar, Zufriwandi; Barus, Ternala Alexander; Aththorick, T Alief
Tunas Geografi Vol. 13 No. 1 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i1.55178

Abstract

Coral reefs are vital ecosystems facing serious threats due to climate change and human activities. This research aims to evaluate the condition of live coral cover in the Sawo-Lahewa Aquatic Tourism Park (TWP) Regional Marine Conservation Area (KKPD), North Nias Regency, as an important step in conservation and sustainable management efforts. Data was collected at 8 research stations using the Underwater Photo Transect (UPT) method. The research results show that the condition of coral reefs in this area is in the damaged to moderate category, with the percentage of live coral cover ranging between 12.33-45.37% and an average of 26.65%. The highest percentage of coral cover was found on Sarangbaung Island (45.37%) in the medium category, followed by Makora Island (42.13%), Gita Island (35.35%), and Lafau Island (31.07%). Meanwhile, locations with the lowest cover in the damaged category include Gosobaohi_01 Island (18.25%), Gosobaohi_02 Island (15.60%), Sifahandro Sea Waters (13.13%), and Bengkuang Bay Waters (12.33%). This research also looks at the abundance of coral juveniles, coral fish, and megabenthos to provide a broad picture of the health of the coral reef ecosystem. The results of this research can become a scientific basis for developing more effective management strategies. Apart from that, it is also a form of supporting conservation efforts, helping restore damaged ecosystems, and increasing the resilience of coral reefs to future environmental threats.Keywords:  Coral Reefs, Regional Marine Conservation Area, North Nias
Co-Authors Amir Husin, Amir Atni, Oky Kusuma etti sartina siregar Hamidah Harahap, Hamidah Hermansyah Hesti Wahyuningsih Isnaini Nurwahyuni Lubis, Putri Amelia Mardhatillah, Siti Mukhlis Mukhlis Nasution, Ahmad Luthfi Abdillah Panjaitan, Kiki Pratiwi Pardosi, Sinta R R. Hamdani Harahap Safira Mustaqilla Said Muzambiq Simaremare, Elisabet Rosevenny Siregar, Zufriwandi Suyono Suyono Ternala Alexander Barus Zulhaji Sam, Taufik