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All Journal JURNAL PIJAR Jurnal Pendidikan Biologi Terampil : Jurnal Pendidikan dan Pembelajaran Dasar SEJ (Science Education Journal) Jurnal Biologi Tropis Zeta - Math Journal Jurnal Ilmiah Dikdaya Jurnal Ilmiah Profesi Pendidikan MURHUM : JURNAL PENDIDIKAN ANAK USIA DINI AN-NISA : Journal of Gender Studies TEACHING : Jurnal Inovasi Keguruan dan Ilmu Pendidikan Jurnal Pijar MIPA Jurnal Ilmiah MEA (Manajemen, Ekonomi, dan Akuntansi) Sasana: Jurnal Pendidikan Agama Islam Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Wahana Islamika: Jurnal Studi Keislaman FENOMENA: Journal of Social Science GENIUS: Indonesian Journal of Early Childhood Education Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan AN NAHDLIYAH Konstruktivisme : Jurnal Pendidikan dan Pembelajaran FIKROTUNA: Jurnal Pendidikan dan Manajemen Islam DIDAKTIKA Indonesian Journal of Innovation in Education Research
Mahrus Mahrus, Mahrus
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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Association of Crab Species with the Mangrove Ecosystem in Gili Sulat East Lombok Putri, Devi Karisna; Al Idrus, Agil; Syukur, Abdul; Mahrus, Mahrus
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
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.v24i3.7480

Abstract

The mangrove ecosystem is inhabited by various macroinvertebrates, such as brachyuran crabs, hermit crabs, gastropods, and bivalves. The mangrove ecosystem is a primary habitat for crabs to grow and develop, and it serves as a nursery ground for young organisms before they reach adulthood. This research was conducted from September 2023 to June 2024 in Gili Sulat, East Lombok. The aim of this study is to determine the diversity of crabs in Gili Sulat and their association with mangrove species. The method used in this research is purposive sampling, taking into account the density of mangroves.The study found 12 mangrove species: Rhizophora mucronata, Rhizophora stylosa, Rhizophora apiculata, Ceriops tagal, Excoecaria agallocha, Bruguiera gymnorrhiza, Pemphis acidula, Avicennia marina, Lumnitzera racemosa, Xylocarpus rumphii, Cordia subcordata, and Osbornia octodonta. The mangrove density at station 1 was 1800 ind/ha, at station 2 was 1222 ind/ha, and at station 3 was 2411 ind/ha. The crabs found included 3 species: Baptozius vinosus, Notonyx sp, and Portunus pelagicus. The abundance of crabs at station 1 was 55.6 ind/ha, at station 2 was 33.3 ind/ha, and at station 3 was 66.7 ind/ha. The correlation between mangrove density and crab abundance had a coefficient of determination of 91.6%, indicating that mangrove density can significantly influence crab abundance. There is one species of crab that has a positive association with one species of mangrove, namely the crab species Baptozius vinosus and the mangrove species Rhizophora mucronata.
Reproductive Aspects of Scad Fish (Decapterus macarellus) Landed at The Fish Landing Base of Tanjung Luar, East Lombok Winata, I Gede Darma; Karnan, Karnan; Mahrus, Mahrus
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - 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.v24i4.7991

Abstract

Scad fish (Decapterus macarellus) is a fish of important economic value, this fish is the main target of fishermen in Tanjung Luar East Lombok but information about its existence biologically has never been research.This study intended to analyze the reproductive aspects of the scad fish landed at PPI Tanjung Luar, East Lombok, based on sex ratio, length-weight relationship, gonad maturity level, gonad weight, and Gonadosomatic Index (GSI). The sampling technique was quota  implemented to get 270 scad fish from March to May 2024. Simple regression linear was applied to analyze the relationship between length and weight of scad fish. This research showed that: 1) the sex ratio of scad fish in the study site was varied, that is  0.58:1; 0.88:1; and 0.58:1 for in March, April, and May respectively, 2) the growth pattern of scad fish in the study site is negative allometric, 3) the gonad's maturity stages dominated by stage of I and II, This shows that the kite fish is still in an immature condition. and 4) the gonadal somatic index indicates that the fish can spawn more than once a year.
Mangrove Structure and Composition Analysis in Teluk Jor, East Lombok Regency Akbar, Lalu Faraby Alif; Idrus, Agil Al; Mahrus, Mahrus; Santoso, Didik
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
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.v24i2b.8253

Abstract

The presence and sustainability of mangrove plants can be inferred from the species' composition and organization within a forest region. The goal of this study is to ascertain the environmental conditions of the mangrove ecosystem in the Teluk Jor region of East Lombok Regency, as well as the diversity index of mangrove species and the structure and composition of the mangrove vegetation. Purposive sampling is used in this descriptive exploratory study design, and data is gathered utilizing transects and quadrants. The results of the research found 7 types of mangroves with 4 families namely the rhizophoraceae family (Rhizophora mucronata, Rhizophora apiculata and Ceriops tagal), the sonneratiaceae family (Sonneratia alba and Sonneratia caseolaris), the avicenniaceae family (Avicennia marina) and the combretaceae family (Lumnitzera racemosa). Sonneratia alba has a relative frequency (FR) value of 63.16%, relative density (KR) of 80.33%, and the highest relative dominance of 78.84% followed by Rhizophora apiculata, Sonneratia caseolaris and Avicennia marina. Seven mangrove species and four families with the greatest important value index belong to Sonneratia alba, according to the research's findings. The sapling category's diversity index was categorized as medium, while the tree category's diversity index was categorized as low.
Co-Authors Abdul Qodir Jailani Abdul Syukur Agil Al Idrus Agil Al Idrus, Agil Al Agus Suherman Ahadi, Abdi Akbar, Lalu Faraby Alif Alpiansah, Hairul Andiopenta Purba Anggraeni, Mira Natika Anindya, Ida Ayu Wiwin Budhi Hascaryo Iskandar Didik Santoso Dyatmika, Sutama Wisnu Eko Nursalim, Eko Faisol Faisol Faruqi, Dwi Gito Hadiprayitno Hartina, Tika Istifadah Istifadah, Istifadah Jamaluddin Jamaluddin Jufri, A. Wahap Karimullah, Suud Sarim Karnan Karnan Khairuddin - Khairudin Khairudin Khojir Lukluk Ibana Maharani, Bintang Mahsun Mahsun Martiana, Rina Muksin, Yufika Dewi Noegroho, Tegoeh Nur janah, Nur Nurliana, Aluh Hanisa Nurul Hasanah Osi, Zaena Sultona Pajriati, Nasipatul Priyanto Priyanto Purnama, Dunia Putri, Devi Karisna Rahmawati, Riyas Rasmi , Dewa Ayu Citra Rosyad, Mushoffa Basyir Sablan, Sablan Silmi, Idam Matus Sukarso, Aa Syamsul Bahri Tassya, Thania Olang Tony Yulianto Tri Wiji Nurani Usriyah, Lailatul Widhayani Puri Setioningtyas, Widhayani Puri Winata, I Gede Darma Yayuk Andayani Yuliatin , Yuliatin Zulkarnaen Zulkarnaen