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All Journal Jurnal Natur Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology AL KAUNIYAH Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Floribunda Journal of Sylva Indonesiana Jurnal Aplikasi dan Inovasi Iptek (JASINTEK) IJOEP : International Journal of Ecophysiology Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences CONSEN: Indonesian Journal of Community Services and Engagement Journal of Community Services: Sustainability and Empowerment Proceeding of International Conference on Biology Education, Natural Science, and Technology Berita Biologi
etti sartina siregar
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Manufacturing of Silage Feed for Daily Goats in Lama Vilage, Pancur Batu District Br. Ketaren, Nurjama'yah; Lindawati; Siregar, Etti Sartina
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 1 (2023): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v8i1.8505

Abstract

Giving quality feed to dairy goats can increase milk production. In the rainy season, the availability of grass and forage is abundant, while in the dry season the availability of local feed is reduced. Forage preservation technology and other local feeds are needed to be available continuously. This can be overcome by applying the manufacture of silage feed using fermentation technology. The method applied in this service activity is the transfer of knowledge conveyed in the socialization activity in the form of 1) introduction of agricultural and agro-industrial waste that can be used as an alternative forage and concentrates, (2) preparation of formulated dairy goat feed, (3) silage feed manufacturing technology and (4) monitoring and mentoring activities. The socialization ware carried out in the form of a lecture followed by a question and answer session. The results of the activities of farmers know some local feeds that have the potential to be used as animal feed, know how to make feed formulations and technology for making silage feed. The knowledge and skills of making silage feed that has been owned by farmers are expected to overcome the difficulties of farmers in sustainably providing feed and can increase goat milk production.
Manufacturing of MOL and Amfoter Feed Palm Leaves and Fronds on Breeders in Talun Kenas Village, STM Hilir District Br. Ketaren, Nurjama'yah; Yunilas; Siregar, Etti Sartina
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 1 (2023): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v8i1.12139

Abstract

Breeders experience difficulties in providing grass as animal feed due to the narrowness of grazing land and changes in the function of land where agricultural land has become oil palm plantations. Farmers only expect the grass that is under the oil palm plants. Farmers have difficulty getting grass for their livestock when there is less grass under the palm trees, especially during the dry season. It is necessary to transfer the technology of utilizing palm leaves and fronds as quality and continuously available sheep feed. This can be overcome by applying the manufacture of MOL and Amphoteric feed from palm leaves and fronds. The method applied to this service activity is the transfer of knowledge in the form of socialization activities in the form of: 1) Introduction to types of plantation and agro-industrial waste that can be used as alternative forages and concentrates, (2) Formulation of sheep feed, (3) Manufacturing technology MOL, (4) manufacture of amphoteric feed, and 5) Monitoring and assistance. Socialization is done by training and lecture methods. The lecture activity was finished, followed by a question and answer session between the participants and the speakers. The results of the farmer's activities found out how to make MOL from palm leaves and fronds which are used to manufacture amphoteric feed. The knowledge and skills possessed by these breeders are expected to overcome the difficulties of breeders in providing grass, as well as to increase the productivity of sheep.
Information Boards as Forest Conservation Campaign in Bahorok Research Center, Langkat Regency, North Sumatera Utara, Indonesia Berliani, Kaniwa; Elimasni; Jumilawaty, Erni; Nurtjahja, Kiki; Wahyuningsih, Hesti; Siregar, Etti Sartina; Nurwahyuni, Isnaini; Tanjung, Masitta; Priyani, Nunuk; Supriharti, Deny; Siregar, Julius Paolo
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 9 No. 2 (2024): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v9i2.16643

Abstract

Yayasan Ekosistem Lestari (YEL) in Bahorok Research Station in Bahorok Sub-district, Langkat District, is a very important location for this work. The hilly terrain of the area provides a beautiful landscape and varied flora and fauna with the main attraction being the corpse flower (Amorphophallus sp). With a preserved natural environment and unique ecological features, this research station allows other parties to participate in protecting the area in various conservation campaign, one of which is the installation/establishment of conservation information boards. Conservation information boards can raise public awareness about the importance of protecting forests and their natural environment. Information on ecosystems, flora, fauna, management, and the importance of conservation can be conveyed through these information boards. Information boards are widely used as an educational tool for local communities and visitors to the forest at the research station. They can learn about forest ecology, the negative impacts of deforestation, and sustainable ways of utilizing forest resources. They can learn about forest ecology, the negative impacts of deforestation, and sustainable ways of utilizing forest resources. Information boards can also be used to invite community participation in conservation efforts, which is expected to improve the quality of knowledge and understanding of conservation areas for communities, researchers, and tourists. Therefore, the installation/establishment of conservation information boards needs to be carried out at Bahorok Research Station, Batu Katak as one of the campaign and solutions to maintain the natural conditions in the forest and river.
A Comparative Study Of Stomatal Characteristics of The Nine Pandanus Species From Nias Island, North Sumatra Province, Indonesia Zebua, Helmin Parida; Pasaribu, Nursahara; Siregar, Etti Sartina
Al-Kauniyah: Jurnal Biologi Vol. 17 No. 2 (2024): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v17i2.31081

Abstract

AbstractThe identification of Pandanus species generally relies on morphological characteristics and requires confirmation from other identification features, such as stomata. A comparative study of stomatal characteristics among nine Pandan species originally from Nias Island, namely Pandanus atrocarpus, P. auranticus, P. labyrinthicus, P. militaris, P. odoratissimus, P. penangensis, P. tectorius, and P. utilis has been investigated. Anomocytic stomata without papillae on subsidiary cells were observed on both leaf surfaces, with significant interspecific differences in adaxial and abaxial stomatal frequencies. Pandanus tectorius exhibited the highest adaxial (30.71 ± 0.81) and abaxial (1.87 ± 0.12) stomatal frequencies. Pandanus labyrinthicus showed the highest stomatal index (adaxial 16.61 ± 2.51, abaxial 0.87 ± 0.11), while P. penangensis had the largest stomatal size (137.54 ± 6.66 µm). Overall, the stomatal parameters, including frequency, index, and size, were higher on the adaxial surface than the abaxial surface, emphasizing interspecific variations. These findings contribute valuable supportive data for the botanical systematics of Pandanus spp. in the region, enhancing our understanding of morphological characteristics crucial for species identification.AbstrakIdentifikasi jenis dari Pandanus cenderung menggunakan ciri morfologi dan memerlukan konfirmasi dari karakter lainnya, salah satunya stomata. Studi perbandingan stomata di antara sembilan spesies Pandan di Pulau Nias, Sumatera Utara telah dilakukan, yaitu Pandanus atrocarpus, P. auranticus, P. labirinthicus, P. militaris, P. odoratissimus, P. penangensis, P. tectorius, dan P. utilis. Hasil penelitian menunjukkan bahwa keseluruhan jenis Pandanus memiliki tipe stomata berupa anomositik pada kedua permukaan daun atau amfistomatous tanpa adanya papilosa pada sel tambahan. Frekuensi stomata adaksial dan abaksial memiliki perbedaan yang nyata secara statistik lintas jenis. Frekuensi stomata tertinggi pada daun adaksial/abaksial diamati berturut-turut dari P. tectorius (30,71 ± 0,81) dan P. tectorius (1,87 ± 0,12). Indeks stomata daun tertinggi diamati berturut-turut berasal dari P. labirinthicus (16,61 ± 2,51) untuk adaxial dan P. labirinthicus (0,87 ± 0,11) untuk abaxial. Ukuran stomata terbesar diamati berturut-turut berasal dari P. penangensis (137,54 ± 6,66 µm) dan P. odoratissimus (64,56 ± 3,96 µm). Secara umum, tipe stomata pada semua jenis adalah anomositik tanpa adanya papila pada sel penjaga. Parameter stomata lainnya, yaitu frekuensi, indeks, dan ukuran pada bagian adaksial cenderung lebih tinggi dibandingkan permukaan abaksial dengan variasi nilai secara interspesifik.
Marchantiophyta Family Radulaceae in Batang Toru Forest, North Sumatra Indonesia Damanik, Risjunardi; Pasaribu, Nursahara; Siregar, Etti Sartina; Syamsuardi, S
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2024: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The diversity of liverworts in North Sumatra is currently limited, highlighting the need for further investigations. Therefore, this study aims to collect and determine data on the liverworts of the Radulaceae family in the Batang Toru forest of North Sumatra. This forest was selected because it has very high rainfall with suitable humidity for the growth of liverworts. The samples were collected using an exploratory survey method, namely by collecting all the liverworts of the Radulaceae family along the Batang Toru forest hiking trails. The results showed 17 species of which three are new records for Sumatran liverworts namely Radula iwatsukii, Radula kinabaluensis and Radula obscura. The Radulaceae family was found as epiphytes on tree trunks and leaves. Based on the number of specimen collections, the most commonly found species was Radula javanica. In addition, Radulaceae in the Batang Toru forest was spread at altitudes between 800 and 1100 m.a.s.l and can be included in the Lower Montane Forest category.
Vegetation Composition and Carbon Storage Potential at Tree and Pole Levels in the Gunung Leuser National Park Area, Bukit Lawang, Bahorok District, Langkat Regency, North Sumatra Siregar, Etti Sartina; Aththorick, T Alief; Atni, Oky Kusuma; Nasution, Ahmad Luthfi Abdillah; Hermansyah; Lubis, Putri Amelia; Pardosi, Sinta R; Mustaqilla, Safira; Mardhatillah, Siti
International Journal of Ecophysiology Vol. 7 No. 1 (2025): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v7i1.17934

Abstract

Forests play a crucial role in environmental, economic, and social sustainability by storing carbon and mitigating climate change. This study aimed to assess the vegetation composition, diversity, and carbon storage in Gunung Leuser National Park, Bukit Lawang, North Sumatra. Fieldwork, conducted using purposive and nested sampling methods, recorded 11 families and 14 plant species with 27 individuals at the tree growth level, and 11 families and 16 plant species with 30 individuals at the pole growth level. The Burseraceae family dominated tree-level composition (29%), while the Phyllanthaceae family dominated pole-level composition (28%). The highest Important Value Index (IVI) was Santiria rubiginosa (36.09%) for trees and Gironniera nervosa (55.46%) for poles. The Shannon-Wiener Diversity Index (H’) was 2.45 for trees and 2.53 for poles, with evenness values (E) of 0.93 and 0.91, respectively. The total biomass was 120.240 tons/ha, with stored carbon amounting to 55.310 tons C/ha. To better estimate carbon storage potential, further research should cover larger areas and include biomass components like litter and dead wood.
Assessing Environmental Drivers of the Distribution of the Rare Species Johannesteijsmannia altifrons: a literature review Siregar, Etti Sartina; Djaingsastro, Aulia Juanda
International Journal of Ecophysiology Vol. 7 No. 1 (2025): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v7i1.19062

Abstract

Johannesteijsmannia altifrons, a palm species exhibits unique dispersal mechanisms and distribution patterns that are critical to understanding its ecological dynamics. Dispersal has a significant impact on this species' spatial distribution and population dynamics. The distribution is significantly influenced by altitude, which affects its growth and habitat suitability. Publications and references in this analysis came from scientific articles published in bibliographic databases such as Scopus and Google Scholar. The keyword search used was “Johannesteijsmannia altifrons”. The authors examined the literature related to the subject of the systematic review, assessed methodological rigor, analyzed the results being reported in the selected studies. Condensed and organized the data before incorporating the findings into a comprehensive systematic review in narrative form. The distribution of J. altifrons in Indonesia is mainly in the Sumatra region, especially in the Northern and Central parts of the island. Taman Nasional Gunung Leuser (TNGL), Bukit Bungkuk Nature Reserve Forest and the surrounding lowland forests are good habitats. This species has habitat suitability at range elevations 20-500 meters (asl), very steep slopes (≥ 45%). Optimal growth occurs under tree canopies, which provide the necessary shade for the plant to thrive. This suggests a specific habitat preference that influences its distribution
KERAGAMAN JENIS TUMBUHAN MANGROVE FAMILI LYTHRACEAE DI BELAWAN PULAU SICANANG, SUMATERA UTARA Ade Syafitri; Etti Sartina Siregar; Elimasni
Berita Biologi Vol 23 No 1 (2024): Berita Biologi
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/beritabiologi.2024.3901

Abstract

Hutan mangrove merupakan kawasan penyangga antara kawasan daratan dengan perairan, tumbuh dan berkembang di kawasan pesisir. Mangrove memiliki banyak manfaat dari segi aspek ekologi, fisik, dan ekonomi. Pulau Sicanang memiliki bentangan mangrove yang sangat luas, salah satunya dari kelompok famili Lythraceae. Akan tetapi belum diidentifikasi berapa jumlah jenisnya. Tujuan penelitian ini untuk mengidentifikasi jenis tumbuhan famili Lythraceae di hutan mangrove Pulau Sicanang dan mendeskripsikan karakteristik morfologi serta anatomi stomata daunnya. Penelitian ini menggunakan metode eksploratif untuk mengkoleksi sampel famili Lythraceae di empat stasiun yang menjadi jalur jelajah. Data karakteristik jenis-jenis famili Lythracea dianalisis secara deskriptif. Kerapatan dan distribusi stomata epidermis daun dianalisis secara kuantitatif. Hasil penelitian diperoleh bahwa terdapat tiga jenis famili Lythraceae berdasarkan karakterisktik morfologinya, yaitu Sonneratia alba, Sonneratia caseolaris dan Sonneratia ovata. Status konservasi famili Lythraceae di Pulau Sicanang berdasarkan IUCN Red List of Threatened Species masuk ke dalam kategori Least Concernt (Sonneratia alba dan Sonneratia caseolaris); dan kategori Near Threatened (Sonneratia ovata). Sonneratia alba, Sonneratia caseolaris dan Sonneratia ovata memiliki tipe stomata anomositik dan distribusi stomata tersebar. Kerapatan stomata Sonneratia alba masuk ke dalam kategori tinggi (>500/mm2), sedangkan Sonneratia caseolaris dan Sonneratia ovata masuk dalam kategori rendah (<300/mm2).
THE LIVERWORT GENUS Marchantia (Marchantiaceae) OF MOUNT SIBAYAK NORTH SUMATRA, INDONESIA Siregar, Etti Sartina; Ariyanti, Nunik S.; Tjitrosoedirdjo, Sri S.
BIOTROPIA Vol. 20 No. 2 (2013): BIOTROPIA Vol. 20 No. 2 December 2013
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2013.20.2.327

Abstract

Study on the Hepaticae (Liverworts) of Sumatra is very scanty including the knowledge on the genus of Marchantia (Marchantiaceae). This study was conducted to explore the diversity of Marchantia in Mount Sibayak North Sumatra, Indonesia. There are seven species of Marchantia in Mount Sibayak North Sumatra, five of the species are previously known: Marchantia acaulis, M. emarginata, M. geminata, M. paleacea, and M. treubii; two of the species are new records for Sumatra (M. polymorpha and M. rubribarba). An identification key of the genus Marchantia from Mount Sibayak, North Sumatra is provided.
Co-Authors Ade Syafitri Ameilia Zuliyanti Siregar Amir, Ahmad Aldrie Arif NURYAWAN Arrasyid, Nurfida Khairina Aththorick, T Alief Atni, Oky Kusuma Aulia Juanda Djaingsastro Aznawi, Andi Aznan Bejo Slamet Berliani, Kaniwa Br. Ketaren, Nurjama'yah DAMANIK, RISJUNARDI Delvian Delvian Deni Elfiati Diana Sofia Hanafiah Dyan Rahmaito Siregar Elfiati, Deni Elfiati Elimasni Erni Jumilawaty Ferdinand Susilo Helmin Parida Zebua Hermansyah Hesti Wahyuningsih Isnaini Nurwahyuni Iwan RISNASARI Julius Paolo Siregar Jumilawaty, Erni Jumilawaty KIKI NURTJAHJA Kiking Ritarwan Leopardas, Venus LINDAWATI Lubis, Putri Amelia Mardhatillah, Siti Masitta Tanjung Meutia Nauly Mohammad Basyuni Mubaraq, Alfian Mubaraq, Alfian Mubaraq Nasution, Ahmad Luthfi Abdillah Nauly, Meutia Nauly Nunik S. Ariyanti NUNIK SRI ARIYANTI NUNUK PRIYANI Nursahara Pasaribu Nursahara Pasaribu Nurul Annisa Br. Nasution Pardosi, Sinta R Rangkuti, Ahmad Baiquni Risnasari, Iwan Risnasari Safira Mustaqilla Sembiring, Christian Hadinata Sivaipram, Itchika Sivaipram, Itchika Sivaipram Slamet, Bejo Slamet Sofyan, Muhammad Zaidun Sri S. Tjitrosoedirdjo Sri S. Tjitrosoedirdjo Sri Sudarmiyati Tjitrosoedirdjo Sulistyono, Nurdin Supriharti, Deny Susilowati, Arida Susilowati Syamsuardi Syamsuardi Syamsuardi, S T. Alief Aththorick Yunasfi Yunilas