Abstract. Harefa MS, Nasution Z, Mulya MB, Maksum A. 2021. Mangrove species diversity and carbon stock in silvofishery ponds Deli Serdang District, North Sumatra, Indonesia. Biodiversitas 23: 655-662. Mangrove-based are promoted as a win-win solution for biodiversity conservation, climate change mitigation well income generation coastal communities. This study aimed to analyze the of mangrove vegetation Tanjung Rejo Village, Percut Seituan Sub-district, Data were obtained using analysis,...

This study analyzes land-use changes in the lakeside area of Lake Toba Regency before and after its designation as a UNESCO Global Geopark 2020. Using satellite imagery, drone-assisted surveys, field observations, quantifies specific land cover evaluates impact on environmental, social, economic sustainability. Between 2015 2023, natural vegetation increased by 8%, erosion-prone areas reduced 12%, compliance with zoning regulations improved 15%. Environmental indicators such phosphate...

The development of the Medan-Binjai elevated railway is a strategic initiative aimed at enhancing mass transportation efficiency, reducing traffic congestion, and supporting regional in Medan City. This study identifies key factors influencing project's success evaluates its contributions to growth. Using quantitative methods, including factor analysis descriptive statistical evaluations, data were collected through surveys interviews with 40 respondents comprising government officials,...

Penelitian ini menggunakan pendekatan kualitatif deskriptif dengan metode studi kasus. Pengumpulan data dilakukan melalui wawancara mendalam, observasi partisipatif, dan analisis dokumen guna memperoleh pemahaman yang komprehensif mengenai pelaksanaan Kurikulum Merdeka dalam proses pembelajaran Bahasa Indonesia. Subjek terlibat penelitian meliputi guru Indonesia, siswa, serta tenaga kependidikan dari berbagai sekolah telah menerapkan tersebut. Hasil menunjukkan bahwa tantangan utama...

Mangrove forests are important ecosystems. However, land conversion and degradation have destroyed a significant area of mangrove. restoration employing native species has been performed in several degraded areas, including some North Sumatra regions. information regarding floristic diversity monoculture areas is still limited. This research aims to analyze the mangrove area, which dominated by Soneratia alba Pasar Rawa Village, Sumatra. The plotted path approach was employed for vegetation...

Abstract. Harefa MS, Nasution Z, Tuhono E, Susilowati A. 2023. Floristic composition and carbon stock estimation under restored mangrove area in Bagan Serdang, North Sumatra, Indonesia. Biodiversitas 24: 2037-2044. Mangrove forests play an important role the surrounding ecosystem, providing various complex ecosystem services such as coastal protection, food medicine provision, water quality improvement, habitat for terrestrial aquatic biota. However, forest degradation conversion have...

Mineral wool has been used as a filter medium that reaches approximately 95% removal efficiency of total suspended solids (TSS) on laboratory scale. However, there is no research available applied larger Hence, this study investigated the ability mineral to remove TSS in two separate segments Cikapayang River at different seasons. This analysis utilizes type I, with dimension 180×30×120 cm placed segment 2, and II 325×30×100 9. Samples were taken using grab sampling method analyze...

Penelitian ini bertujuan untuk menilai kriteria kualitas tanah pada lahan cabai merah yang dibudidayakan oleh petani. bersifat deskriptif eksploratif, dengan pendekatan survey lapangan dan didukung analisis di laboratorium. Pengambilan sampel dilakukan metode Purposive secara Random Sampling, mengkombinasikan pengambilan komposit. Sampel diambil 9 titik kedalaman 0-20 cm tersebar tiga satuan berbeda berdasarkan jenis tanah, penggunaan lahan, kemiringan lahan. Analisis yaitu tekstur BD, TRP,...

Groundwater quality in agricultural area is highly affected by human activities. To determine groundwater quality, several methods are widely applied. Yet, most of them based on standard laboratory analysis which normally time consuming, expensive, and involve chemical materials from may cause another environmental pollution. Thus, a rapid, effective simple alternative method required to assess quality. Fourier transform near-infrared spectroscopy (FT-NIRS) considered be employed due its...

Geoproducts have a specific philosophy, geological relationship that visible and understandable through the utilization of geomorphological features from diversity geological, biological cultural heritage then strengthened by geo-brand as added value product. As local products certain region, geoproducts an unique tourism product, membership Geopark Global Network (GGN), play role identifying geopark itself become market tools where geo-brands can take it. Samosir Island, part Toba Caldera...

This study aims to analyze the effect of community oil palm replanting program on economic growth farmers in Batu Bara Regency. research uses quantitative methods with multiple linear regression analysis techniques. Primary data was obtained from 75 respondents smallholder District. The results showed that administration and human resources have a positive significant influence smallholders. Meanwhile, land, facilities infrastructure, sustainability no implies it is important increase...

This study explores the role of sustainable certification in enhancing competitiveness and regional development Arabica coffee Aceh, Indonesia. By employing Location Quotient (LQ) analysis, assesses sector's economic contribution, while Policy Analysis Matrix (PAM) evaluates comparative competitive advantages certified coffee. Data were collected through surveys, interviews, observations involving 273 respondents from Central Aceh Bener Meriah districts, primary production areas. The...

Sungai Percut mengalir dari hulu Sibolangit dan melintasi Kota Medan menuju daerah hilir di Kecamatan Sei Tuan. ini menjadi tempat pembuangan limbah sampah yang berdampak pada kualitas air. Penelitian menganalisis status mutu air untuk mengetahui pengaruh pemanfaatan lahan terhadap kondisi Percut. Pengambilan sampel dilakukan lima titik sampling sampai ke hilir. Parameter dianalisis yaitu parameter fisika, kimia, biologi dengan metode Indeks Pencemaran (IP) sesuai Keputusan Menteri Negara...

Abstract - Volume of groundwater recharge showed a picture watershed to determine the flow instability due physical characteristics and precipitation. Many methods had been constructed understand dynamic movement water discharge. One them was analysis stream hydrograph with Seasonal Recession Method. Information about condition at several sub in Krueng Peusangan Watershed really needed management for sustainable resources. The study aimed from seasonal recession method conducted watershed,...

Abstract The logic of talking about rules thought so that these can draw correct conclusions, but in reality everyday life many things are found cannot be stated something is absolutely true or false. This study aims to explain the philosophy fuzzy basis for decision making based on IF-THEN rules. Related role science as development logic, it separated from ontology, epistemology and axiology. findings this Ontology covering making. Decision an election certain criteria two more possible...

The pattern movement and age structure influence of rice cultivation phases on A. femina aquatic organisms was investigated in the Manik Rambung field (MRRF) ecosystem North Sumatra. collections a buterfly net samples were collected five (fallow, plough, transplantingyoung, tiller, mature atau preharvest).Agriocnemis adult (Odonata:Zygoptera), one pest predators stage, dependent its interactions with phases.There three classes femina; teneral, juvenile sex ratio male female is 1.7:1.It...

Abstract Base flow is the portion of stream that not run off and results from seepage water ground into a channel slowly over time. considered to be groundwater contribution flow. Estimates amount base can derived records. This study about recharge condition at two sub watersheds in Krueng Peusangan: watershed Lut Tawar Teupin Mane (Krueng Teumbo). The Peusangan Watershed one priority for management because this critical condition. an important catchment area Aceh where there are million...

Abstract This research is an analysis of the application SAW, WP and TOPSIS methods to support system for decision making at university. The types scholarships provided are PPA education given by Kementerian Riset, Teknologi dan Pendidikan Tinggi. variables attributes or criteria specified Directorate General Learning Student Affairs as contained in 2018 Academic Achievement Improvement (PPA) guidebook. Decision Support Systems apply classic FMADM method TOPSIS. results this study both SAW...

Abstract Sugar Palm plants are multifunctional plants, with all parts of the plant that can be used for human survival. The palm tree is one balancing ecosystem and rural ecology. purpose this study was to determine utilization sugar ( Arenga pinnata ) production process carried out by community live around area PT. Toba Pulp Lestari. Observation data collection were made interview questionnaires respondents. results revealed most common use PT Lestari produce wine, so-called tuak , through...

This qualitative study was undertaken to gather information about the present status of Lake Sidihoni region by watching government and community members conducting interviews. The data gathered utilizing triangulation approach were checked rechecked based on received. From findings identifying current circumstances, existing information/data is mapped using SWOT assess organization's strengths, weaknesses, opportunities, threats. overall results these stages are concept structuring for...

The Lake Toba Catchment Area (LTCA) has long been known as a producer of shallots in North Sumatra. Samosir variety is the mainstay local farmers. Due to lack quality seeds and disease attacks on variety, farmers began cultivate Bima Brebes variety. This study aims prove difference productivity shallot varieties cultivated LTCA region by considering soil texture factor affecting productivity. was conducted 6 producing districts included LTCA. For analysis, 30 samples were selected based...

Penelitian survey mengenai kajian sifat kimia, fisik tanah dan hubungannya dengan produktivitas tanaman pala di Kabupaten Minahasa, Provinsi Sulawesi Utara yaitu Kecamatan Mandolang yang terletak pada ketinggian 109-555 m dpl. Analisis Laboratorium Kimia Kesuburan Tanah Balai pengkajian Teknologi Pertanian Selatan. Sampel diambil dari masing-masing lokasi secara komposit untuk analisis laboratorium. meliputi tekstur, pH, C-Organik, N-Total, P-Tersedia, K-Total, Ca, Mg, Na KTK, Kejenuhan...

Abstract Currently information technology has developed rapidly, many have implemented in various fields. It is undeniable that Indonesian people often use social media to interact indirectly, for example uploading vacation photos. But with the rapid advancement of itself find someone’s personal data on internet today not something difficult. Conscious or not, users are ignorant their privacy. What they do real world sometimes all shared form photos status updates, without choosing which...