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Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
Published by Universitas Jenderal Soedirman
ISSN : 08531629     EISSN : 08531629     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
Majalah Ilmiah Biologi Biosfera : A Scientific Journal merupakan peer reviewed jurnal yang diterbitkan oleh Fakultas Biologi Universitas Jenderal Soedirman. Media ini mewadahi hasil-hasil penelitian di bidang biologi tropika yang terbit tiga kali setahun (Januari, Mei, September).
Arjuna Subject : -
Articles 7 Documents
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Search results for , issue "Vol 36, No 3 (2019)" : 7 Documents clear
Komunitas Fitoplankton di Kawasan Curug Sawer dan Cimanaracun, Situ Gunung, Jawa Barat Firdaus Ramadhan Hamada; Priyanti Priyanti; Rachma Fauziah; Rizky Aprizal
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 36, No 3 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2019.36.3.735

Abstract

Air terjun atau curug terbentuk dari aliran air sungai pada jalur dataran tinggi yang hanya sedikit mendapat perhatian mengenai kualitas dan status nutriennya. Tujuan penelitian untuk mengetahui komposisi fitoplankton dan kualitas perairan pada curug Sawer dan Cimanaracun Taman Wisata Alam (TWA) Situ Gunung. Parameter kimia-fisik yang diamati berupa suhu, konduktivitas (EC), total padatan terlarut (TDS) dan pH. Sampel fitoplankton diambil sebanyak 4 liter air dialirkan pada jaring plankton berukuran 50 μm hingga 15 ml dan diawetkan dengan Lugol’s iodine 10%. Hasil penelitian menunjukkan terdapat 3 jenis fitoplankton dari kelas Chlorophyceae (100%) pada curug Sawer dan 4 jenis yang berasal dari kelas Chlorophyceae (76%) dan Cyanophyceae (24%) pada curug Cimanaracun. Berdasarkan nilai indeks saprobik, kedua perairan memiliki kategori tercemar sangat ringan dengan masing-masing 1,92 pada curug Sawer dan 1,53 pada curug Cimanaracun. AbstractWaterfalls are formed from river which cascade at a high elevation that had a little attention about its quality and nutrient. The aims of study determined a composition of phytoplankton and the quality of waterfalls in Situ Gunung recreational park region. Physico-chemical was observed such as temperature, electro-conductivity, total dissolved solids, and pH. Phytoplankton sample was taken 4 liters streamed to plankton-net with size 50 μm until 15 ml and preserved by Lugol’s iodine 10%. The result showed there are 3 phytoplankton species belong Chlorophyceae class (100%) in Sawer waterfall and there were 4 phytoplankton species belong Chlorophyceae (76%) and Cyanophyceae (24%) classes in Cimanaracun waterfall. Based on saprobic index value from both of them waters showed has very slight pollution with 1.92 and 1.53, respectively.
Kualitas Air dan Pertumbuhan Ikan Nilem (Osteochilus vittatus) pada Sistem Resirkulasi dengan Media Filtrasi Berbeda Nuning Setyaningrum; Muhammad Hussein Sastranegara; Firda Isdianto; Sugiharto Sugiharto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 36, No 3 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.302 KB) | DOI: 10.20884/1.mib.2019.36.3.763

Abstract

Nilem (Osteochilus vittatus) is a popular freshwater commodity. Intensive production of nilem is often limited by water quality degradation. Recirculating aquaculture system is known to have advantage over this problem. Zeolites and water spinach (Ipomoea aquatica) are widely used in water remediation effort. This research aimed to find out water quality and nilems’ growth in two distinct recirculating system (zeolite filter based recirculating system; water spinach based recirculating system) as well as the relation between these variables. Furthermore, the difference in water quality and nilem’s growth between the two recirculating system was also evaluated.  The method used was a completely randomized experimental design with three replication. Nilems were reared in recirculating system with a density of 100 individuals for 60 days. Measurement of water quality and nilem’s growth was conducted on day 0, 30, and 60. The measured parameters included water temperature, TSS, DO, CO2, pH, NH3 and nilem’s weight. Analysis of data in was completely done with descriptive method. The result showed that water quality and nilem’s growth in recirculating system using zeolite filter and in recirculating system using water spinach filter was similar in general. Water quality in both recirculating system was sufficient to promote nilem’s growth.
Determination of Grouper Species of Subfamily Epinephelinae from Raja Ampat (West Papua) Region Using CO1 Gene Sequence Yanti Ariyanti; Achmad Farajallah
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 36, No 3 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (664.412 KB) | DOI: 10.20884/1.mib.2019.36.3.837

Abstract

The Raja Ampat Islands, located near the heart of the “Coral Triangle” on Bird's Head Peninsula, West Papua, Indonesia are well known for its outstanding biological diversity and stunning marine and terrestrial habitats. Groupers (family Serranidae) has included as part of the 5 largest families associated with coral reefs on the Bird’s Head region. The grouper identification was generally done on the basis of color patterns and morphological characters, but oftentimes these characters show intraspecific variations or differences in color patterns between juvenile and adult individuals. This study aims to confirm the type of grouper species that were obtained from the sport fishing activities around Raja Ampat Island. Species confirmation from subfamily of Epinephelinae determined by analyzing the number of differences of nucleotides and genetic distance on the sequence of the CO1 gene (Cytochrome oxidase subunit 1). A total of eight fish samples were successfully sequenced and aligned. Those samples consist of eight species belonging to the three genera namely Anyperodon, Epinephelus, and Cephalopolis.
Phytoplankton Community in The Lembeh Strait, Bitung and Wori Beach, Manado, North of Sulawesi, Indonesia Hikmah Thoha; Mariana D Bayu; Arief Rachman; Tan Senming
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 36, No 3 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2019.36.3.834

Abstract

This study was conducted to understand phytoplankton community in the Lembeh Strait at Bitung and Wori Beach at Manado in October 2015. The phytoplankton samples were collected with vertical towing using Kitahara plankton net (mesh size 80 µm). Identification and enumeration were done using Sedgwick Rafter Counting Chamber (SRCC) under 100-400X magnification. Phytoplankton abundance in Wori, Manado were lower than Lembeh Strait. There were 24 genera of diatom group and nine genera of dinoflagellate group found in Wori and Lembeh Island waters. Total phytoplankton abundance in Wori ranged from 16,293.28 – 464,358.45 cells m-3 (station 6 and station 5, respectively). Whilst, In Lembeh Strait, Bitung, the highest abundance of phytoplankton was 2,300,407.33 cells m-3 and the lowest was 16,089.61 cells m-3. The composition of diatoms and dinoflagellates in Wori and Lembeh Strait was dominated by diatom which ranged from 80.70 % to 100.0%. Based on the mean contribution at each station among the two locations, there were 11 dominance genera of diatom and dinoflagellate groups which the mean contribution value above five percent. Those were including six genera of diatom group (Chaetoceros, Bacteriastrum, Nitzchia, Rhizosoleria, Thalassiothrix, and Thalassiosira) and five genera of dinoflagellate group (Ceratium, Prorocentrum, Protoperidinium, Pyrodinium, and Scriepsiella, Chaetoceros (diatom) and Protoperidinium (dinoflagellate) exhibit the highest genera representation in all diatom and dinoflagellate group among the two locations, with a 38 % and 36 % (respectively) mean contribution. Three genera which commonly known to cause harmful algal blooms (HABs) were observed in those two locations. Nitzschia from diatom group, Prorocentrum, and Pyrodinium from dinoflagellate group. Nitzschia was the most frequently found, almost recorded at all station in Wori, Manado and Lembeh strait, Bitung. The less frequent found of HABs causative organisms in those two locations was Pyrodinium.
Keragaman Isolat Khamir Osmofilik pada Madu Hutan dari Sulawesi Tengah Ditinjau Menggunakan Teknik RAPD Ferinta Rahmayanti; Miftahul Ilmi
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 36, No 3 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2019.36.3.988

Abstract

Honey is a sweet substance with high sugar content produced by bees from flower nectar. Osmophilic yeast is one of organisms that can grow in honey because their ability to adapt in high osmotic pressure environment. Twenty-seven osmophilic yeast isolates were obtained from 11 forest honey samples to this research. This research objective is to determine the diversity of yeast isolates from genotypic characterization. Genotypic characterization was done using DNA fingerprint analysis using the RAPD PCR technique. This research used 2 types of primers, namely CDU primer (5′-GCGATCCCCA-3 ′) and M13 primer (5′-GAGGGTGGCGGTTCT GAGGGTGGCGGTTCT-3 ′). Data in the form of electrophoregram are represented in table n (yeast strain) x t (character units) using binary scoring type. The data were analyzed using a numerical taxonomy method with similarity (OTU) and determined using Jaccard coefficient (SJ) in 70% of IS limit. The results of this research showed that 27 yeast isolates were divided into 2 clusters and 10 outliers with a correlation coefficient (r) of 0.924624
Keanekaragaman Jenis Begonia dan Studi Populasi Begonia leuserensis HUGHES di Kawasan Hutan Blok Ketambe, Taman Nasional Gunung Leuser, Aceh Muhammad Efendi; Taufikurrahman Nasution
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 36, No 3 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (779.916 KB) | DOI: 10.20884/1.mib.2019.36.3.918

Abstract

Sebuah ekplorasi begonia Sumatera telah dilakukan untuk memprediksi populasi dan preferensi habitat B. leuserensis Hughes pada habitat alaminya di Gunung Ketambe, Taman Nasional Gunung Leuser, Aceh. Deskripsi morfologi B. leuserensis dan jenis begonia lainnya yang ditemukan di kawasan tersebut dilakukan untuk melengkapi deskripsi morfologi yang udah ada. Pendugaan jumlah populai dilakukan menggunakan petak contoh sebanyak 20 petak, dengan ukuran 10x10M pada dua lokasi yang berbeda. Parameter lingkungan meliputi suhu, kelembaban udara, pH tanah, kelembaban tanah, dan intensita cahaya diukur pada setiap plot sampel. Ebanyak empat jenis Begonia ditemukan di Gunung Ketambe, yaitu B. flexula, B. laruei, dan B. verecunda yang tergolong ke dalam Begonia dataran rendah, sedangkan B. leuserensis tersebar pada ketinggian 850-1.250 m asl. Studi populasi menunjukkan bahwa pada kelimpahan rata-rata B. leuserensis di kawaan tersebut menvapai 210 individu/ha. Secara umum, uhu, pH tanah dan intensitas cahaya merupakan faktor yang paling berpengaruh dalam kedu puluh petak contoh, selain ketinggian tempat yang membatasi persebaran B. leuserensis di zona submontana Gunung Ketambe.
Ikan Introduksi Oxyeleotris marmorata, Bleeker (1852): Populasi, Laju Exploitasi dan Pengendaliannya di Waduk Sempor, Kebumen Windiariani Lestari; Siti Rukhayah; Tutilah Jamilatun
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 36, No 3 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (596.173 KB) | DOI: 10.20884/1.mib.2019.36.3.823

Abstract

Oxyeleotris marmorata Bleeker or marble goby originally from China and is introduced to Indonesia in 1927. This predator fish could be a threat to freshwater fish diversity, thus its population should be controlled. In order to support their control efforts, this research attempted to evaluate the population size and exploitation rate of O.marmorata in Sempor Reservoir, Kebumen. Survey with purposive random sampling were applied by dividing the Sempor Reservoir into three parts (inlet, middle and outlet) and each part was represented by two sites. The population sizes of fish were analyzed using F-test and the exploitation rates of O.marmorata were analyzed using FiSAT II. The result shown that the population sizes of O.marmorata in inlet, middle and outlet were is different. (Fcal= 7.544 with P= 0.03). The fish population in middle possessed L∞ = 39.06, K = 2.0 and t0 = -0.44, and fish population in outlet with properties L∞ = 37.59, K = 2.1, and t0 = -0.42. The growth patterns of O.marmorata in both parts were relatively similar. The mortality of O.marmorata in the middle part was more caused by fishing activities, meanwhile in the outlet, the mortality occurred naturally. The exploitation rate in middle (E= 0.55) and in outlet parts (E=0.10). It seems that the middle part of Sempor Reservoir was 5 times more exploited than in the outlet part. Population control could be conducted by fishing O marmorata with 13.38-17.30 cm in length in outlet part and fishing (E) should not more than 0.5.

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