EJurnal UNCEN (Universitas Cenderawasih)
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Pollen Foraging Activity of Stingless Bee (Heterotrigona itama) in Managed Colonies at the Adat Imbo Putui Forest (AIPF), Kampar Regency
Get PDFStingless bees are commonly found in Indonesia, either living naturally or managed in cultivation systems. The main factor determining the success of stingless bee farming is the availability and abundance of plants as food sources. This study aimed to determine the number and timing of foraging activities of stingless bees (Heterotrigona itama) for pollen, the influence of environmental factors on the foraging activities of H. itama for pollen, and the types of plants that have the potential to serve as pollen sources. The foraging activity of H. itama was directly observed from 06:00 to 18:00. The environmental parameters measured included temperature, humidity, and light intensity. The survey of potential pollen source plants was conducted around the managed colony boxes and within a 200-meter radius from the colony boxes. The results showed that H. itama foraging activity peaked at 11:00 (bees leaving the nest), 10:00 (bees returning to the nest without carrying pollen), and 11:00 (bees returning with pollen). Spearman correlation analysis indicated that pollen foraging activity was influenced by light intensity. The potential for pollen source plants around the study site was relatively abundant, with 37 plant species identified.
Identification of Spodoptera frugiperda J.E. Smith attacks on alternative host plants in Magelang and Klaten Regencies, Central Java
Get PDFSpodoptera frugiperda is a polyphagous insect whose main host is the maize plant and had attacked 23 families of higher plants other than maize. The purpose of this study was to identify the most frequent and least frequent attacks of S. frugiperda on alternative host plants and identify the plants scepies most often used by S. frugiperda as an alternative hosts in Magelang and Klaten District. This research was conducted from October 2024 - May 2025. Samples were taken around corn fields in Magelang and Klaten Districts. Each sub-district was taken 3 villages using stratified method. Each village was taken one land around the corn field as a sampling location using purposive method. The criteria for host plants taken were those with S. frugiperda infestation in the form of bite marks, larval faeces or egg packages. The results of this study obtained 27 species of alternative host plants consisting of 16 families attacked by S. frugiperda in Magelang District and 17 species of plants from 6 families in Klaten District. The most common type of S. frugiperda infestation in the two districts was bite marks and the least common type of infestation was dung marks. The conclusion of this study is that S. frugiperda infestation has been found on higher plants other than maize in Magelang and Klaten Districts, Central Java.
Survei Tingkat Minat Mahasiswi Terhadap Olahraga Futsal Di Asrama Putri Tolikara
Get PDFPenelitian ini bertujuan untuk mengukur tingkat minat dan mengidentifikasi faktor yang memengaruhi minat mahasiswi terhadap olahraga futsal di Asrama Putri Tolikara. Metode yang digunakan adalah deskriptif kuantitatif dengan survei. Populasi berjumlah 60 mahasiswi, dengan sampel sebanyak 45 orang yang dipilih melalui purposive sampling. Data dikumpulkan menggunakan kuesioner tertutup berbentuk skala Likert dan dianalisis secara deskriptif dengan teknik persentase. Hasil penelitian menunjukkan bahwa mayoritas minat mahasiswi berada pada kategori sedang (49%), diikuti tinggi (24%), rendah (20%), sangat rendah (7%), dan tidak ada yang sangat tinggi (0%). Faktor penghambat meliputi kurangnya kepercayaan diri dan penguasaan teknik (internal), serta terbatasnya fasilitas, dukungan sosial, dan norma gender (eksternal). Simpulannya, minat mahasiswi terhadap futsal tergolong sedang dengan kesenjangan antara minat dan partisipasi nyata. Oleh karena itu, direkomendasikan penyediaan fasilitas yang aman dan terjadwal khusus, pembangunan komunitas olahraga inklusif, serta edukasi dan kemitraan strategis untuk meningkatkan partisipas
MAKING BIODEGRADABLE PLASTIC FROM SEAWEED BY OVEN DRYING METHOD
Get PDFBiodegradable plastic is an environmentally friendly plastic that can be decomposed by microorganisms. This study aims to produce bioplastics from seaweed Eucheuma cottonii using the oven drying method and to analyze the resulting physical properties. The study was carried out through several stages: sample preparation, filtrate production, mixing of additives (acetic acid and glycerol), casting, and drying in an oven at 80 °C with drying times varying from 4 to 18 hours. The results showed that 4 hours of oven drying produced bioplastics with a thin and flexible texture, while longer drying times resulted in darker colors and brittle textures. Water resistance tests showed that ovendried bioplastics decomposed faster than those dried under sunlight. Thus, oven drying is effective for accelerating bioplastic production, although the optimal quality is still influenced by heating duration
Pelaksanaan Praktikum di Laboratorium Biologi SMAS Muhammadiyah Jayapura
Get PDFPenelitian ini bertujuan untuk mendeskripsikan pelaksanaan praktikum biologi di Laboratorium Biologi SMAS Muhammadiyah Kota Jayapura sebagai bagian penting dalam mendukung pembelajaran berbasis keterampilan proses sains. Praktikum merupakan sarana yang memungkinkan peserta didik mengembangkan pemahaman konsep melalui pengalaman langsung, namun efektivitasnya sangat bergantung pada kelengkapan sarana dan prasarana laboratorium serta pengelolaannya. Penelitian ini merupakan penelitian deskriptif kualitatif yang dilaksanakan pada Februari–Maret 2024 dengan melibatkan Kepala Sekolah, Kepala Laboratorium, Guru Biologi, dan peserta didik dari kelas XI dan XII sebagai subjek penelitian. Data dikumpulkan melalui observasi, wawancara mendalam, dan dokumentasi serta dianalisis menggunakan teknik reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa prasarana laboratorium biologi telah memenuhi standar ruang sesuai ketentuan nasional, namun kelengkapan sarana laboratorium masih belum memadai. Beberapa peralatan tersedia dalam jumlah terbatas, sebagian lain mengalami kerusakan, dan sejumlah alat wajib tidak tersedia sehingga menghambat pelaksanaan praktikum. Pelaksanaan praktikum hanya berlangsung satu hingga dua kali per semester dan sangat bergantung pada ketersediaan alat. Meskipun demikian, minat peserta didik terhadap praktikum tergolong tinggi, dan guru telah melaksanakan perannya dengan baik dalam mempersiapkan prosedur dan pelaksanaan kegiatan. Faktor penghambat utama adalah keterbatasan sarana, sedangkan faktor pendukung meliputi tersedianya ruang laboratorium khusus dan komitmen guru dalam memfasilitasi kegiatan. Secara keseluruhan, penelitian ini menyimpulkan bahwa pelaksanaan praktikum biologi belum optimal dan memerlukan peningkatan sarana serta pengelolaan laboratorium agar mampu menunjang pembelajaran biologi secara maksimal.
Kata Kunci : Praktikum biologi, laboratorium biologi, pelaksanaan praktikum, SMA
Respon Ekologis dan Potensi Rekrutmen Komunitas Ikan Pada Fish Shelter Berbahan Fly Ash dan Bottom Ash (Faba)
Get PDFDegradasi ekosistem pesisir dan terumbu karang di Pulau Bangka akibat kegiatan antopogenis telah mendorong pengembangan inovasi restorasi habitat laut berbasis material alternatif ramah lingkungan. Penelitian ini bertujuan mengevaluasi respons ekologis dan potensi rekrutmen komunitas ikan pada fish shelter berbahan Fly Ash dan Bottom Ash (FABA) di Perairan Tuing, Kabupaten Bangka, yang telah ditetapkan sebagai Kawasan Konservasi Perairan (KKP) pada Tahun 2023. Monitoring dilakukan untuk menganalisis keanekaragaman, kelimpahan, biomassa ikan, serta kolonisasi organisme bentik pada media berbasis FABA. Hasil penelitian menunjukkan peningkatan jumlah spesies ikan dari 29 jenis pada periode Monitoring II menjadi 33 jenis pada pengamatan terkini, dengan total kelimpahan mencapai 538 ekor. Nilai indeks keanekaragaman (H’) sebesar 2,75 tergolong kategori sedang, indeks dominasi (D) sebesar 0,10 kategori rendah, dan indeks keseragaman (E) sebesar 0,44 kategori rendah. Biomassa ikan meningkat sebesar 231,40 kg, menjadi 1.499,67 kg/ha. Proses rekrutmen alami organisme bentik juga menunjukkan perkembangan positif, dari 18 jenis (Monitoring II) menjadi 23 jenis dengan total 129 individu. Temuan ini menegaskan bahwa fish shelter berbahan FABA berpotensi tinggi sebagai habitat buatan yang efektif dalam mendukung keanekaragaman dan kelimpahan ikan, sekaligus memperkuat upaya restorasi ekosistem laut secara berkelanjutan
Kelimpahan dan Keanekaragaman Jenis Gastropoda Pada Ekosistem Lamun di Perairan Kampung Sabarmiokre Distrik Supiori Barat Kabupaten Supiori
Get PDFPenelitian ini bertujuan untuk mengetahui keanekaragaman spesies gastropoda di ekosistem lamun di perairan Desa Sabarmiokre, Kecamatan Supiori Barat, Kabupaten Supiori di Provinsi Papua. Penelitian ini dilakukan pada Mei 2024 untuk pengumpulan data. Sampel gastropoda diambil menggunakan metode sampling sistematis dengan plot 1x1 m di 2 (dua) stasiun penelitian, masing-masing terdiri dari 3 transek. Semua gastropoda yang ditemukan di dalam plot dihitung dan diidentifikasi. Analisis data meliputi komposisi, kelimpahan, keanekaragaman, keseragaman, dan dominasi gastropoda di padang lamun. Hasil penelitian menunjukkan bahwa komposisi gastropoda terdiri dari 14 famili dan 27 spesies di stasiun satu, dan 18 famili serta 35 spesies di stasiun dua. Nilai kelimpahan di stasiun 1 berkisar antara 0,530 hingga 0,330 ind/m2 dan di stasiun 2 berkisar antara 1,260-1,980 ind/m2. Keanekaragaman gastropoda adalah 1,592 - 2,854, keseragaman 0,541-0,910, kemudian nilai dominasi adalah 0,100 hingga 0,336
ASSESSING HASIL BELAJAR SISWA MELALUI IMPLEMENTASI PROBLEM BASED LEARNING PADA MATERI INDUKSI ELEKTROMAGNETIK
Get PDFABSTRAK
Penelitian dilatarbelakangi oleh tuntutan pendidikan abad-21 yang mengharuskan siswa untuk mengimplementasikan pemahaman konsep dan keterampilan memecahkan masalah dalam dunia nyata. Tuntutan ini terhambat oleh materi induksi elektromagnetik yang dianggap abstrak dan sulit oleh siswa. Penelitian Quasi Experiment ini memiliki tujuan untuk mengetahui assessing hasil belajar siswa melalui implementasi Problem Based Learning (PBL) pada materi induksi elektromagnetik siswa SMA/MA. Penelitian ini menggunakan desain penelitian Nonequivalent Control Group Design yang terdiri dari dua kelompok, yakni kelompok eksperimen yang menerima model PBL dan kelompok kontrol dengan model pembelajaran konvensional. Assessinghasil belajar pada penerapan PBL dapat dilihat dari perbandingan nilai N-Gain rata-rata pada kelompok eksperimen dan kelompok kontrol. Hasil penelitian menunjukkan nilai N-Gain rata-rata kelompok eksperimen lebih besar dari nilai N-Gain rata-rata kelompok kontrol. Hal ini membuktikan bahwa penerapan PBL dapat meningkatkan hasil belajar siswa khususnya pada materi induksi elektromagnetik yang dianggap abstrak dan rumit.
Kata kunci: Hasil Belajar, PBL, Induksi Elektromagnetik
ABSTRACT
The research was motivated by the demands of 21st-century education, which requires students to implement conceptual understanding and problem-solving skills in the real world. This demand is hampered by the material on electromagnetic induction, which students consider abstract and difficult. This Quasi Experimental study aims to assess student learning outcomes through the implementation of Problem Based Learning (PBL) on electromagnetic induction material for high school students. This study uses a Nonequivalent Control Group Design research design consisting of two groups, namely the experimental group that received the PBL model and the control group with a conventional learning model. Assessing learning outcomes in the application of PBL can be seen from the comparison of the average N-Gain value in the experimental group and the control group. The results showed that the average N-Gain value of the experimental group was greater than the average N-Gain value of the control group. This proves that the application of PBL can improve student learning outcomes, especially on electromagnetic induction material which is considered abstract and complicated.
Keywords: Learning Outcomes, PBL, Electromagnetic Inductio
The Influence of the Nabelan-Kabelan Myth on Christian Acceptance in the Baliem Valley
Get PDFNabelan-Kabelan mythology is a belief system of the Lani people in the interior of the central mountains of Papua future which is integrated into a culture rooted in oral stories that are lived through the symbol of Wabir, (They), Pirikur, (Bird) and Wip tree. This research aims to reveal how Nabelan-Kabelan was formed and played an important role in the process of encounter between culture and Christianity. The method used in this research is an ethnographic method with a social history approach, research data sources were obtained through observation, interviews and literature reviews. Primary data sources were obtained from figures belonging to the group of traditional elders, religious leaders and the community who have connections with the research topic. Based on the research results, it can be seen that this myth has a big impact on the acceptance of Christianity, which gives legitimacy to Christianity to convert important elements in culture into a theological narrative
STRATEGI PENGENDALIAN BANJIR KOTA MERAUKE PROVINSI PAPUA SELATAN
Get PDFThis research aims to examine the Flood Control Strategy of Merauke City with the approach of existing drainageconditions, vulnerability testing and spatial planning policies of Merauke City. The background of the research departsfrom the increasing frequency of extreme rainfall and the threat of tidal flooding due to climate change and thecharacteristics of coastal geomorphology that trigger higher flood risks. This research uses descriptive and quantitativeapproaches. Data sources were obtained from primary data which were the results of interviews and fieldobservations while secondary data were obtained from relevant agencies. The results showed that the flood drainagechannel was not optimal, the vulnerability indicator of Merauke city was 2.2 on a scale of 4 with a moderate category,and the impact of changes in the RDTR of Merauke city in 2023. The height of flood water in Merauke city is still low(average 0.5 - 1m) but the flood area is increasing, especially in areas with high population density and low areas dueto land changes and residential development in infiltration / low areas. Flooding in the city of Merauke is due to highrainfall and overflow of water from the drainage as a result of siltation in the drainage and damage to severalfloodgates. The strategy to control flooding in Merauke city is by optimizing flood drainage channels and buildingretention ponds, especially in coastal, densely populated and low-lying areas, as well as by spatial planning for theprotection of infiltration zones and water boundaries in changing land functions and increasing public awareness inmaintaining the cleanliness of drainage channel