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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology AL KAUNIYAH REINWARDTIA Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Journal of Sylva Indonesiana Jurnal Natural Proceeding of International Conference on Biology Education, Natural Science, and Technology
Nursahara Pasaribu
Departemen Biologi, FMIPA, Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Neuroscience Physics Social Sciences Veterinary

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Utilization of Google Class Room in improving learning quality for lecturers and students at the USU department of biology FMIPA Rahayu, Suci; Pasaribu, Nursahara; Elimasni; Sabri, Emita; Supriharti, Denny
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.26 KB) | DOI: 10.32734/abdimastalenta.v4i2.4086

Abstract

Community service activities titled Transforming Organic Waste into Organic Fertilizer in Namo Bintang Village in May - November 2019. This activity aims to convert organic waste into organic fertilizer that has economic value, and does not endanger the environment. The method used is counseling, lectures and training as well as monitoring and evaluation with the community directly to the field. Utilization of Google Class Room is done in several places in the Biology department with the approval of the Chair of the Department. The activity was carried out by means of counseling and lectures, explaining the theory and techniques of using Google Class Room, which was followed by a group of Lecturers and Students in the Biology department at USU FMIPA.The training was conducted by a group of Lecturers and Students in the Biology department of USU FMIPA separately. All carry out this activity by proactively conducting training to get results in the form of the Google Class Room application. The equipment for using Google Class Room is only a laptop, smartphone and internet package. And finally the monitoring and evaluation of the success of monitoring work in the field will be carried out by going directly to the field together, monitoring by visiting to find out whether lecturers and students have been able to do it themselves. In addition, the relationship will be carried out by telephone to overcome the problems that arise . In general, community service activities have been successfully carried out and seen a good cooperative relationship between the Higher Education, especially the Implementation Team, the village community realizes the importance of saving the environment from at the same time improving life expectancy because it can make its own fertilizer / compost.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.
Co-Authors A.A. Ketut Agung Cahyawan W AFIATRI PUTRIKA, AFIATRI Afridah Afridah Rosannah Alief Aththorick DAMANIK, RISJUNARDI Dwi Ratna Anjaning Kusuma Marpaung Elimasni Elizabeth A. widjaja, Elizabeth A. Elizabeth Anita Widjaja Emita Sabri Eny Yuniati etti sartina siregar FADZILAH AG. KANAK, FADZILAH AG. Fuad Bahrul Ulum Helmin Parida Zebua Julius Paolo Siregar KANJANA WONGKUNA, KANJANA LESLEY C. LUBOS, LESLEY C. LUONG THIEN TAM, LUONG THIEN MIKA RIZKI PUSPANINGRUM, MIKA RIZKI MOHD RAWIYANI PG. HJ. SERUDIN, MOHD RAWIYANI PG. MONICA SULEIMAN, MONICA Mudinillah, Adam Musyarofah Zuhri NG AIK MIN, NG AIK NURLISMA JUNITA, NURLISMA RANGKUTI, LATIFAH HANNUM ROBBERT GRADSTEIN, ROBBERT Saleha Hannum SATRIYAS ILYAS Sofyan, Muhammad Zaidun SOONTHREE KORNOCHALERT, SOONTHREE Suci Pratiwi Suci Rahayu Supriharti, Denny Syamsuardi, S Ummi Khoiriyah YONG KIEN–THAI, YONG