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STUDI KELIMPAHAN PERIFITON PADA DAUN LAMUN Enhalus acoroides DI PERAIRAN DUSUN TIHI – TIHI KOTA BONTANG KALIMANTAN TIMUR Butar-Butar, Sinta; Jailani; Taru, Paulus
Jurnal Tropical Aquatic Sciences Vol. 4 No. 1 (2025): Jurnal Tropical Aquatic Sciences
Publisher : Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ze5qd275

Abstract

Dusun Tihi-Tihi adalah salah satu perkampungan pesisir yang berada di laut Kota Bontang. Perifiton merupakan salah satu jenis mikroorganisme yang hidup yang menempel pada permukaan lamun. Tujuan penelitian ini adalah untuk mengetahui kelimpahan perifiton pada daun lamun Enhalus acoroides di Perairan Dudun Tihi-Tihi Kota Bontang Kalimantan Timur. Penelitian dilakukan pada bulan Oktober – Desember 2023. Hasil penelitian ditemukan 5 kelas, 11 jenis spesies yang dimana kelas Bacillariophyceae terdiri dari Bacteriastrum, Coccneis sp, Nitczia sp, Pleurosigma sp, Synedra acus, Synedra ulana, (6 jenis spesies). Kelas Cyanophyceae terdiri dari Oscilatoria sp (1 jenis spesies), kelas Dinophyceae terdiri dari Closterium gracile (1 spesies), kelas Chlorophyceae terdiri dari Stigeoclonium sp dan Ulotrix (2 spesies), Mediophyceae terdiri dari Leptocylindrus sp (1 spesies). Kisaran kelimpahan perifiton pada daun lamun Enhalus acoroides di Perairan Dusun Tihi-Tihi adalah 334 – 1400 individu/cm2. kelimpahan perifiton tertinggi pada kelas Bacilariophyceae. kelas Bacillariophyceae adalah kelompok yang sering ditemukan karena jenis kelas ini dapat bertahan pada perairan dengan arus yang kuat menggunakan alat penempelanya berupa tangkai bergelatin. Perifiton yang memiliki kelimpahan terendah adalah Dinophyceae, Dinophyceae tidak memiliki struktur sel yang baik seperti Bacillariophyceae. Kelas Dinophyceae diduga sulit menempel pada daun lamun karena terkena arus tersebut tidak memiliki alat penempel yang kuat seperti kelas Bacillariophyceae.Kelimpahan perifiton tertinggi pada Stasiun 3 dan terendah pada stasiun 1. Perbedaan nilai kelimpahan perifiton pada perairan Dusun Tihi-Tihi sangat dipengaruhi oleh kecepatan arus, dan kandungan nitrat pada perairan.
Analisis Tingkat Indeks Massa Tubuh (IMT) dan Kondisi Fisik Pemain Futsal Putra SMAN 1 Torjun Jailani; Handayani, Heni Yuli; Purwoto, Septyaningrum Putri
SPRINTER: Jurnal Ilmu Olahraga Vol. 6 No. 2 (2025): SPRINTER: Jurnal Ilmu Olahraga
Publisher : MAN Insan Cendekia Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46838/spr.v6i2.810

Abstract

Futsal as a sport also requires proper training to achieve success. Therefore, prime physical condition is needed so that players are able to display their best performance. In addition, Body Mass Index (BMI) is also an important aspect that needs to be considered. This study aims to determine the Body Mass Index and physical condition of male Futsal players at SMAN 1 Torjun. The data collected are height, weight, age to determine the level of nutritional status, while data regarding physical condition includes data on speed of movement (speed), flexibility (flexibility), leg muscle strength, muscular endurance (muscular endurance), leg muscle explosive power (power) and endurance (aerobic). The subjects of this study were male futsal players at SMAN 1 Torjun who registered in the Amateur Futsal League. This type of research is quantitative with descriptive methods. 1) The results of data collection obtained an average height of 1.67 m, an average weight of 61.86 kg, an average BMI of 22.29 within normal criteria. The average physical condition includes 2) average speed of movement (speed) 4.20 seconds, 3) average flexibility 16.87 cm, 4) average leg muscle strength of 106.86 kg, 5) average abdominal muscle endurance (muscular endurance) 39.71 times, 6) average leg muscle explosive power (power) 264 watts and 7) average aerobic endurance of 43.06 miles/kg/min.
Different times effect of fermentation oil palm empty fruit bunches and composition planting media on the growth of amaranth Fransiska, Sherly; Masitah; Jailani; Nasution, Ruqoyyah; Rosrinda, Eadvin
Genbinesia Journal of Biology Vol. 1 No. 3 (2022): July 2022
Publisher : Generasi Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55655/genbinesia.v1i3.17

Abstract

Oil palm empty fruit bunches (OPEFB) are underutilized waste. The combination of OPEFB fermentation and eggshell powder as a planting medium, aims to determine the effect of the combination of treatment differences in OPEFB fermentation time and composition of growing media on the growth of amaranth (Amaranthus tricolor). This study consisted of 6 treatment combinations, 4 replications, completely randomized factorial design method, with the parameters of plant height (cm), number of leaves (strands), and total fresh weight (grams). Data were collected at the age of 7, 14 and 21 DAP. Analysis of variance and the smallest significant difference test (BNT) level 5% were used. The results of the analysis showed that the composition of the growing media had a significant effect (Fcount > Ftable), From the results of the study, it was found that the most optimal treatment for the composition of the growing media was W2K3 treatment with a composition of 3 kg of soil, 20 grams of eggshell powder, and 200 grams of OPEFB fermentation for 21 days. The interaction factor of these two factors had a significant effect (Fcount > Ftable) on plant height 21 DAP (4.697 > 3.55).