Article Per Year (5 Year)
p-Index From 2020 - 2025
3.482
P-Index
This Author published in this journals
All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis Jurnal Pengabdian Magister Pendidikan IPA Jurnal Ilmiah Profesi Pendidikan Jurnal Pijar MIPA
Lalu Japa
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Immunology & microbiology Materials Science & Nanotechnology Mathematics Physics

Published : 26 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 26 Documents
Search

 1   2   3 
Abundance and diversity of phytoplankton at sekotong bay waters Western Lombok Lalu Japa; Noar Muda Satyawan; Rizky Regina Kawirian
Jurnal Pijar Mipa Vol. 16 No. 5 (2021): November 2021
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.945 KB) | DOI: 10.29303/jpm.v16i5.1702

Abstract

Phytoplankton is one of the important components in aquatic ecosystems. This organism plays an important role as a primary producer to support the life of the tropics above it. The purposes of this study were to reveal the abundance and diversity of phytoplankton species in the waters of Sekotong Bay, West Lombok. Sampling were conducted in July 2018 at 8 stations using plankton net and then observed at the Laboratory. The results of the abundance calculations show a varied pattern at each observation station. The highest abundance was found at station 8 (9,060 ind/L) followed by station 6 (8,300 ind/L), station 7 (6,490 ind/L), station 4 (4,440 ind/L), station 3 (3,980 ind/L) , station 5 (2,820 ind/L), station 2 (2,460 ind/L) and station 1 (2,440 ind/L). The Shannon - Wiener Species diversity Index also shows diverse patterns at each station. Station 7 has the highest diversity index value (H′ = 3.55), followed by station 6 (H′ = 3.46), station 8 (H′ = 3.18), station 1 (H′ = 2.72) , station 2 (H′ = 2.69), station 5 (H′ = 2.67), station 4 (H′ = 2.33) and station 3 (H′ = 2.26). Species dominance index at all stations at low category with the highest dominance found at station 3 (D = 0.19), followed by station 4 (D = 0.18), station 2 (D = 0.09), station 5 (D = 0, 09), station 1 (D = 0.08), station 8 (D = 0.06), station 6 (D = 0.05) and station 7 (D = 0.04). Species Evennes index (E) values ranged from 0.71 to 0.88, indicating that the number of individual species was relatively the same and the ecosystem was in relatively good condition. The analysis showed that the spatial pattern of abundance and diversity of phytoplankton species in Sekotong Bay was related to the distance from the estuary.
PEMBUATAN BASIS DATA ALUMNI PROGRAM STUDI PENDIDIKAN BIOLOGI FKIP UNIVERSITAS MATARAM Lalu Japa; Gito Hadi Prayitno; I Gede Mertha
Jurnal Penelitian Pendidikan IPA Vol. 4 No. 1 (2018): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v4i1.108

Abstract

The one form of a  research as an advanced action  suggestion of the  research done by Handayani et al. (2013) was construction of a base data of alumni that could easily reach all alumni of Biology Education Study Program FKIP University of Mataram, as they are widely separated in some parts of Indonesian region.  This descriptive research provided some explanation in relation to the profile of the alumni Biology Education Study Program FKIP University of Mataram. The alumni base data was constructed based on SQL. The result of research explained that the alumni base data using SQL program was very helpful for analysis of separation and various kinds job of alumni, so the Biology Education Study Program FKIP University of Mataram could do evaluation and developing as the needed of market or job market. This research also showed during the periods of 30 years, the alumni of Biology Education Study Program FKIP University of Mataram that work as a teacher with some fluctuation. There was 92% as a teacher for the alumni period 1980-1994, and slightly increased became 93% for alumni period 1995-2004, than decreased sharply became 54% during the period of 2005-2014.Keywords: Base Data, Alumni, Based on SQL
Community of Seaweeds on Cemara Beach East Lombok Intan Mushlihah; Lalu Japa; I Gde Mertha; Ahmad Raksun
Jurnal Biologi Tropis Vol. 20 No. 2 (2020): Mei - Agustus
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v20i2.1926

Abstract

Seaweeds (macroalgae) are a marine biological resource that have an important role in aquatic ecosystems and for society. The aim of this research was to determine community of seaweeds in Cemara Beach, East Lombok Regency.Data were collected at four observation points using a method of combinationof the line transect and quadrat. Seaweeds community data were analyzed using density parameters, important values, species diversity index, and species evenness index. The similarity percentage between transects was determined based on the Bray-Curtis cluster analysis using biodiversity program-version 2. In Cemara Beach there were 24 species of macroalgae which memberof 3 divisions, 11 orders and 15 families. Chlorophyta was a division with highest number of species. The number of species for Chlorophyta was 14 species, Rhodophyta division was 7 species, and Phaeophyta division 3 species. The species with highest density is Enteromorpha sp.,25.1 clumps/m2. Ulva lactuca is the species with the highest important value (72.69%). Diversity and evenness index in Cemara Beach seaweed species were 1,868 (medium category) and 0,699 (almost evenly distributed).The results of cluster analysis based on environmental parameters, species similarity and number of clumps of seaweed species, diversity index, and species evenness index indicate that seaweed in Cemara Beach can generally be divided into 2 groups.
Phytoplankton Diversity as Bioindicator of Pandanduri Dam Waters, East Lombok Regency Lalu Hasan Nasirudin Zohri; Agil Al Idrus; Lalu Japa
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v20i3.2024

Abstract

Pandanduri Dam waters has an essential function for the community made the activities of the surrounding community inseparable from the Pandanduri Dam that made potentially quality change of the Pandanduri Dam waters. Good water quality is an important requirement for humans that made water quality research is essential to be done. Human activities will affect environmental factors such as biological parameters, especially phytoplankton, which are indicators of water quality. The aim of this study was to analyzed water quality of Pandanduri Dam through study of phytoplankton community and diversity. Sample sites were determined based on haphazard sampling method and phytoplankton data were analyzed based on the shannon-weiner diversity index. The results showed that the phytoplankton community identified in Pandanduri Dam consisted of 5 classes, 13 orders, and 31 species with  species diversity index of 2,659. Based on fitoplankton diversity index value the water of  Pandanduri Dam was in lightly polluted category. It is suggested to more detailed studies should be undertaken especially on species that produce toxins over a longer time scale.
Improvement of Microalga Biodiesel Production Capacity Suripto Suripto; Lalu Japa
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v20i3.2365

Abstract

This research is directed at developing renewable fuel sources, which are not only environmentally friendly, but also more importantly harvested faster and not competitive with agricultural land. For this reason, the potential oil-producing microalgae need to be explored, because it has fast growth and its cultivation development will not compete in land use with food agriculture. This study aims specifically to determine the types of microalgae producing biodiesel oil that can be isolated from the natural Wallacea in NTB waters, to determine light spectrum treatment and N elimination in microalgae culture which significantly increases the productivity and quality of the biodiesel it produces. Based on the distribution map of potential biofuel-producing microalgae types in NTB waters, samples will be collected from several NTB waters, then the target types of microalgae are isolated and cultured in two systems: a closed system (bioreactor) and an open system (raceway pool) with light spectrum variation treatment and elimination of N in microalgae culture nutrients to increase the productivity and quality of the biodiesel oil produced. Biomass was harvested every 48 hours from the bioreactor and every 4 weeks from the experimental pond. Microalgae biomass was extracted with hexane to produce primary oil. This primary oil usually still has a relatively high viscosity compared to petrodiesel, so it is then trans-esterified with methanol and an acid catalyst to increase the fire point and reduce its viscosity. Oil fractionation is also carried out to sort and determine the composition of saturated, mono-unsaturated and poly-unsaturated fatty acids which greatly determine the biodeasel quality of these microalgae. The biodiesel quality variables to be measured are density, viscosity, flash point, freezing point, solubility in water, vapor pressure, reactivity, physical appearance, odor and toxicity. The result showed that, in the community of marine microalgae from Lombok and Sumbawa Islands consist of 62 species of potential producing-oil microalgae were dominated by Bacteriastrum delicatulum, B. variance, Chaetoceros amini, C. affinis, C. liciniosum, C. lorenzianum, Gyrosigma sp., Nannochloropsis oculata, Nitzchia spp., Oscillatoria sp., Pseudonitzschia spp., and Thalassionema nitzschicoides. Types of oil-producing freshwater microalgae in Lombok Island consist of 19 species of potential producing-oil microalgae, identified with high abundance and dominance, covering Microcystis aeruginosa, M. incerta, Nostoc sp., and Pediastrum boryanum. The oil content of the three species of microalgae, namely Chaetoceros amini, Nannochloropsis oculata, and Nitzchia spp which had been cultured by trietmant were 34, 68, and 46% dry weight, respectively.
The Biological Parameters as an Indicators of Water Quality for a Tourism Area Spot in Jurang Sate Primary Canal Central of Lombok, Indonesia Baiq Dini Najia Dzurrahmi; Agil Al Idrus; Lalu Japa
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v21i3.2900

Abstract

Jurang Sate primary canal is one of the the main irrigation canal in central Lombok which  supplies water from the main network, namely Jangkok, Sesaot, and Keru Feeder weir to several secondary canal and to irrigated tertiary plots. The local community use the Jurang Sate Primary canal in a variety of daily activities, and nowadays it is used as a means of water tourism. The purpose of this study was to determine the water quality for ectourism area spot of the Jurang Sate primary canal based on biological parameters, namely the total Coliform bacteria, and the diversity of phytoplankton species. Measurement of coliform bacteria parameters and phytoplankton diversity was carried out ex-situ. The results showed that the total Coliform bacteria count in each sample calculated with MPN index was in the range of 170-110000 MPN/100 ml. The phytoplankton identified in this study were 24 species, 15 orders, and 6 classes. Phytoplankton species diversity index value of 1.32 (medium category). The water of the primary channel of Jurang Sate was categorized in moderately polluted. The conclusion of this research is the water of the Jurang Sate primary canal is not ideal for water tourism activity.
Phytoplankton Community as A Bioindicator for Water Quality of Sumi Dam, Bima Regency Muhamad Hairil Anas; Lalu Japa; Khairuddin Khairuddin
Jurnal Biologi Tropis Vol. 22 No. 1 (2022): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i1.3109

Abstract

The waters of the Sumi dam have an important role in accordance with the purpose of its construction. Therefore, monitoring of water quality becomes necessary because good water quality is an important requirement for every organism. This study aims to examine the water quality of the Sumi dam based on the community and species diversity of phytoplankton. The sampling location was determined based on the purposive sampling method. Water samples were taken in April 2021 using a 20 micron plankton net and preserved with formalin at a concentration of 4% preservation. The results showed that the identified phytoplankton community in the Sumi Dam consisted of 80 species and 13 classes. The index value of the diversity of phytoplankton species in the Sumi dam is high. Based on the index value of the diversity of phytoplankton species as a bioindicator, the waters of the Sumi dam are included in the unpolluted category.
Community Structure of Bacillariophyceae in the Water of Klui Beach, North Lombok Yuni Safrian Hadi; Lalu Japa; Lalu Zulkifli
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3398

Abstract

Coastal areas have potential that can be developed by the community, one of which is beach tourism. Tourism activities around that take place around the coast can affect the aquatic ecosystems especially the community structure of phytoplankton. Phytoplankton are aquatic organisms that act as primary producers. Bacillariophyceae is a class of phytoplankton that is commonly abundant in marine waters. The objectives of this study were to determine the species composition, species abundance, and community structure of Bacillariophyceae in the waters of Klui Beach. This type of research is descriptive-explorative. The Haphazard sampling was applied for determining the sampling sites. Phytoplankton data were analyzed using the abundance formula, diversity index, uniformity index, and dominance index. The results showed that the composition species of Bacilllariophyceae consisted of 48 species which included in 17 orders. Average species abundance was 298.09 ind/L (low category). The spesies diversity index was 2.37 (moderate category), the species uniformity index was 0.86 (high category), and the species dominance index was 0.13 (low category).
Mengenal Fitoplankton untuk Penguatan Materi Kompetensi Dasar Protista Pada Siswa Jurusan IPA (Biologi) MA Hidayatul Muhsinin Desa Labulia Lombok Tengah Lalu Japa; Syamsul Bahri; Prapti Sedijani
Jurnal Pengabdian Magister Pendidikan IPA Vol 1 No 1 (2018)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.019 KB) | DOI: 10.29303/jpmpi.v1i1.231

Abstract

Abstrak: Berdasarkan kajian nilai ujian nasional Sekolah Mengengah Atas (SMA) dan Madrasah Aliyah (MA) tiga tahun berturut-turut (2008-2010) untuk kompetensi dasar (KD) yang nilainya selalu rendah adalah KD Protista. Dari hasil penelitian tahun 2010, terungkap bahwa kegiatan parktikum (termasuk pengamatan Protista) tidak bisa dlaksanakan secara maksimal karena berbagai kendala seperti mulai dari tidak cukup tersedia sarana pendukung, tidak cukup waktu, dan tidak tahu bagaimana melakukan kegiatan tersebut. Karena itu diperlukan kegiatan khusus pengenalan fitoplankton sebagai salah satu upaya penguatan materi Protista yang menyangkut: pengenalan spesies yang umum dijumpai, sumber sampel, dan teknik pengamatan dengan mikroskop. Kegiatan pengabdian ini ditujukan untuk penguatan atau pengayaan pengetahuan dan keterampilan siswa MA Hidayatul Muhsinin Desa Labulia Lombok Tengah tentang fitoplankton sebagai komponen utama materi KD Protista. Kegiatan pengabdian ini akan dilakukan dalam bentuk penyampaian teori dan praktek pengamatan secara langsung menggunakan mikroskop. Siswa kelas III jurusan IPA (Biologi) MA Hidayatul Muhsinin, peserta kegiatan ini sangat bersemangat melakukan pengamatan di bawah mikroskop yang sebelumnya belum pernah mereka lakukan. Mereka baru sadar bahwa dalam satu tetes air terdapat banyak sekali individu sel berbagai spesies fitoplankton yang bisa disaksikan. Pembelajaran teoritis di kelas diperkuat dengan fakta yang diamati dengan mikroskop. Kata kunci: IPA(Biologi), Fitoplankton, Madrasah Aliyah, Penguatan, Protista, Siswa
Pelatihan Budidaya Sayuran Hidroponik Menggunakan Sistem Wicks Sebagai Usaha Pemberdayaan Masyarakat di Desa Cenggu Annisa Mujriati; Khairatun Nafisah; Khusnul Hayatunnisa; Lalu Japa
Jurnal Pengabdian Magister Pendidikan IPA Vol 4 No 2 (2021)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (727.421 KB) | DOI: 10.29303/jpmpi.v4i2.717

Abstract

Berdasarkan analisis situasi diketahui bahwa sebagian besar masyarakat Desa Cenggu bermata pencarian di sektor pertanian dan produk yang dihasilkan berupa kacang kedelai, padi dan bawang merah tetapi untuk jenis tanaman sayuran produksinya sangat rendah dan bahkan  tidak dibudidayakan oleh penduduk setempat. Padahal, potensi pengembangan pertanian pada skala rumah tangga atau perkarangan cukup besar. Tujuan program ini adalah: (1) memberdayakan masyarakat Desa Cenggu dengan memberikan pelatihan budidaya tanaman sayuran dengan hidroponik sistem wick. (2) meningkatkan pengetahuan masyarakat tentang teknik hidroponik. Konsep hidroponik merupakan budidaya menanam dengan memanfaatkan air/larutan bernutrisi tanpa menggunakan medium tanah dengan menekankan pada pemenuhan kebutuhan nutrisi. Metode yang digunakan dalam program ini adalah sosialisasi program, pelatihan dan praktik pembuatan hidroponik dan pendampingan serta evaluasi kegiatan. Hasil dari program yang dijalankan yaitu terlaksanannya sosialisasi kepada masyarakat yang ditandai dengan  terbentuknya model hidroponik yang siap digunakan oleh masyarakat dan setiap warga memiliki hidroponik di rumah masing-masing di area perkarangan rumah.
Co-Authors Afiatul Hafifah Agil Al Idrus Ahmad Raksun Annisa Mujriati Arif Safrillah Baiq Diana Safitri Baiq Dini Najia Dzurrahmi Baiq Sri Handayani Baiq Sri Handayani Dhuha Alief Khanda Saefudin Didik Santoso Dita Anggraini Safitri Sipayung Eni Suyantri Gito Hadi Prayitno Harsa Naunik Qudraty Hilman Ahyadi I Gde Mertha I Gede Mertha Imam Bachtiar Intan Mushlihah Jamaluddin Jamaluddin Karnan Karnan Khairatun Nafisah Khairuddin Khairuddin Khusnul Hayatunnisa Laila Nurul Safitri Lalu Hasan Nasirudin Zohri Lalu Zulkifli Mega Safitri Muchlis Muhamad Hairil Anas Nadia Audina Ni Putu Maitri Vidya Cita Riesky Noar Muda Satyawan Nurseha Nurseha Prapti Sedijani Prapti Sedijani Rachmawati Noviana Rahayu Rizky Regina Kawirian Suripto Suripto Syamsul Bahri Tasya Nurul Aulia Widia Apriani Yuni Safrian Hadi