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Bioma : Berkala Ilmiah Biologi
Published by Universitas Diponegoro
ISSN : -     EISSN : 25982370     DOI : -
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Education
BIOMA (ISSN 1410-8801) adalah Majalah Ilmiah Biologi yang bertujuan mewadahi semua informasi hasil penelitian, telaah pustaka, makalah teknis, dan kajian buku, dari berbagai cabang ilmu Biologi. Diharapkan penerbitan ini dapat berkontribusi dalam penyampaian informasi ilmiah yang merupakan mata rantai proses kegiatan ilmiah. Terbit sejak tahun 1999.
Arjuna Subject : -
Articles 278 Documents
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Phylogenetic Analysis Of Pigmented Marine Derived Yeast Associated With Sargassum sp. Based On Internal Transcribed Spacer (ITS) Tri Lunggani, Arina; Kusdiyantini, Endang
Bioma : Berkala Ilmiah Biologi Vol. 21, No 1, Tahun 2019
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (80.484 KB) | DOI: 10.14710/bioma.21.1.55-59

Abstract

Karimunjawa Jepara is a region with high diversity, including the diversity of seaweed. Brown seaweed is potential marine organisms due to their ability to produce enzymes, pigments, and bioactive compounds. This ability makes brown seaweed one of the potential biological agents from the marine to be developed in the industrial field. However, most of these substances may not be produced by seaweed itself, but cooperation with microbes or even by bacteria or symbiotic fungi. Secondary metabolites which are pharmaceutical, enzyme, and cosmetic sources can be produced by microbial associan. The purpose of this study was to carry out phylogenetic analysis and morphological characterization of colonies from pigmented yeast associated with Sargassum sp. The results of the phylogenetic analysis indicate that isolates of KY 3 have 100% relative similarity with Cystobasidium oligophagum.
Peta Batimetri Danau Rawapening Soeprobowati, Tri Retnaningsih
Bioma : Berkala Ilmiah Biologi Vol. 14, No. 2, Tahun 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2033.651 KB) | DOI: 10.14710/bioma.14.2.78-84

Abstract

Lake has an important function as source of water;  maintain biodiversity; source of protein; manage toxicity; device to reduce river flooding; source  of groundwater; device climate; transportation and touris;  medium; and for cultural and religion activities. Semi natural lake of Rawapening has function for hydroelectricity power, irrigation for agriculture, fisheries, and tourism. For maintaning those functions, lake batimetric map is required for limnological study as well as for basic informasi for development lake management. However, there is no batimetric map of Rawapening Lake after1976  lake’s sketch by Goltenboth. Therefore, this survey was conducted in order to update batimetric map of Rawapening. On August 16th, 2008, echosounding was donecfross section and lake edge every 30 second. Recorded data on the GPS then interpolated to the lake depth form in every dot of echosounding.The deepest part of Rawapening Lake was 18 metres, around Bukit Cinta spring. Comparing to Goltenboth sketch, the Rawapening Lake depth was not quite change. North West part of the lake remain has 2-4.7 metres depth. However, based on sedimentation rate, the shallowness lake was very sharply, and predicted that in 2021 Rawapening Lake will full of sediment. Maintaning lake depth is a must to maintain lake’s function.   Key words: batimetri, Danau Rawapening, limnologi
Perubahan Kandungan Ammonia, Nitrit dan Nitrat Dalam Air Tambak Pada Model Budidaya Udang Windu Dengan Rumput Laut Sargassum plagyophyllum dan Ekstraknya Izzati, Munifatul -
Bioma : Berkala Ilmiah Biologi Vol. 13, No. 2, Tahun 2011
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.023 KB) | DOI: 10.14710/bioma.13.2.80-84

Abstract

Salah satu masalah penyebab kegagalan dalam budidaya udang windu adalah tingginya limbah organic akibatsisa pakan yang tidak dikonsumsi. Akumulasi sisa pakan yang sebagian besar komponenya protein ini telahmengakibatkan meningkatnya konsentrasi ammonia, nitrit dan nitrat dalam air tambak. Ammonia dan nitritmerupakan bahan kimia yang dapat meracuni udang yang dibudidayakan. Model budidaya ganda udang denganrumput laut merupakan salah satu teknik untuk menurunkan kandungan ammonia, nitrit dan nitrat dalam air tambak.Penelitian ini bertujuan untuk menguji penurunan kandungan ammonia, nitrit dan nitrat dalam air tambak padamodel budidaya udang dengan rumput laut Sargassum plagyophyllum dan ekstraknya. Penambahan ekstrakSargassum ini diharapkan dapat menurunkan pertumbuhan bakteri pathogen, sebagaimana sifat antibakteri padaekstrak tersebut. Model budidaya udang tanpa rumput laut maupun ekstrak digunakan sebagai kontrol. Rancanganpenelitian ini adalah acak lengkap (RAL), dengan 3 perlakuan dan 3 ulangan. Data yang diperoleh diolah denganANOVA faktor tunggal. Hasil penelitian menunjukkan bahwa model budidaya udang dengan Sargassum dapatmenurunkan ammonia dan nitrit hanya sampai dengan usia pemeliharaan 8 minggu. Lebih dari usia pemeliharaantersebut, kandungan ammonia dan nitrit justru meningkat. Hal ini disebabkan karena Sargassum yang digunakanmengalami kematian akibat turunnya hujan pada minggu ke-10. Penambahan ekstrak Sargassum tidak menimbulkanperbedaan kandungan ammonia, nitrit dan nitrat apabila dibandingakan dengan kontrol.
Struktur Komunitas Mikroartropoda Tanah di Lahan Pertanian Organik dan Anorganik di Desa Batur Kecamatan Getasan Salatiga Husna, Shifa Aulia; Hadi, Mochamad; Rahadian, Rully
Bioma : Berkala Ilmiah Biologi Vol. 18, No.2, Tahun 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (107.369 KB) | DOI: 10.14710/bioma.18.2.157-166

Abstract

Soil microarthropods is a arthropods that have an important role in decomposing organic materials and soil nutrients. On the farmland there is organic materials content and soil nutrients that abundants enough, because the addition of manure as a source of energy in the ground. The research was conducted in August-October 2015 took place in the field of organic and inorganic farmland in the Batur Village, Getasan Sub-district, Salatiga. This study aimed to examine the soil microarthropods community structure in organic and inorganic farmland as well as the effect of chemical and physical environmental factors to community structure of soil microarthropods. The study was conducted with samples of soil sampling method (PCT) and extracted using Barlese Funnel Extractor. Statistically show that diversity of soil microarthropods between organic and inorganic farmland are not significantly different. There is found 28 taxa of soil microarthropods in organic farmland and 23 taxa in inorganic. The highest total individual density of the taxa are exist in the organic farmland (2260 individual/ m²). The highest abundance of soil microarthropods taxa in inorganic farmland are Carabidae (26,55%) dan Prostigmata (13,27%), while in inorganic farmland are Carabidae (17,24%) dan larva Coleoptera (13,79%). The evenness of soil microarthropods taxa in organic farmland are much low compared with inorganicfarmland, because there is a dominant taxa (Carabidae). There is an influence relation between the chemical and physical environmental factors including water content, porosity, nutrient, and organic materials with community structure of soil microarthropods. Key words:Community structure, Soil microarthropods, Organic and inorganic farmland
Viabilitas Rhizobakteri Bacillus sp. DUCC-BR-K1.3 pada Media Pembawa Tanah Gambut Disubstitusi dengan Padatan Limbah Cair Industri Rokok Noviana, Lailia -; Raharjo, Budi -
Bioma : Berkala Ilmiah Biologi Vol. 11, No. 1, Tahun 2009
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (88.781 KB) | DOI: 10.14710/bioma.11.1.30-39

Abstract

Pemotongan subsidi pupuk oleh pemerintah Indonesia membuat petani mencari alternatif pupuk yang relatiflebih murah yaitu pupuk hayati. Pupuk hayati merupakan pupuk yang diinokulasi dengan mikroba yang bermanfaatbagi tanaman. Penelitian sebelumya melaporkan bahwa Bacillus sp. DUCC-BR-K1.3 telah terbukti dapat melarutkanfosfat, yang berperan dalam pertumbuhan tanaman, sehingga bakteri ini dapat dimanfaatkan sebagai agen yangdiinokulasikan dalam pupuk hayati. Pupuk ini dapat diformulasi dengan memodifikasi media pembawa yangberpotensi yaitu tanah gambut dan padatan limbah cair industri rokok, yang mana memiliki kandungan bahanorganik pendukung viabilitas bakteri tersebut Penelitian ini bertujuan mengetahui viabilitas bakteri pada mediapembawa dan formula yang efektif sebagai dasar pembuatan pupuk hayati. Metode penelitian dilakukan denganRancangan Acak Lengkap, di mana terdiri dari lima perlakuan yaitu F1 (100% tanah gambut), F2 (75% tanahgambut & 25% padatan limbah), F3 (50% tanah gambut & 50% padatan limbah), F4 (25% tanah gambut & 75%padatan limbah), dan F5 (100% padatan limbah). Variabel yang diukur adalah jumlah populasi bakteri per gramdalam media pembawa selama masa penyimpanan 30 hari. Hasil penelitian dianalisis variansinya dengan ANOVAkemudian uji lanjut dengan Duncan Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa perlakuanF5 pada T1 (masa penyimpanan 10 hari), berbeda signifikan dengan perlakuan yang lain dengan viabilitas bakteritertinggi (2.30 x 1011 CFU). Viabilitas bakteri pada akhir masa penyimpanan tidak berbeda signifikan pada kelimaperlakuan, dan jumlah ba
Keanekaragaman Tumbuhan yang Berpotensi sebagai Bahan Pangan di Hutan Lindung Pulau Panjang Jepara Jawa Tengah Utami, Sri
Bioma : Berkala Ilmiah Biologi Vol. 19, No. 2, Tahun 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (53.793 KB) | DOI: 10.14710/bioma.19.2.136-140

Abstract

Panjang Isaland is small island in Jepara, Central Java province, with covers about 19,73 ha areas but information on plant biodiversity especially, which has potency as source of foodstuff is still limited. For that reason a plant exploration and inventory in this area has been done in forest protected Panjang Island. Nineteen species of edible plant have been recorded, and they consist of fruits (6 species), vegetables (7 species) and tuber (6 species). Of these species have not all used by local communities to fulfill their food needs. Need to be introduced to local communities the potential  of edible plants  in Panjang Island in order to support the efforts of food independence in Indonesia.
Distribusi Famili Zingiberaceae Pada Ketinggian Yang Berbeda Di Kabupaten Semarang Sari, Hanif Maya; Utami, Sri; Wiryani, Erry; Murningsih, Murningsih; Perwati, Lilih Khotim
Bioma : Berkala Ilmiah Biologi Vol. 14, No.1, Tahun 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (147.506 KB) | DOI: 10.14710/bioma.14.1.1-6

Abstract

Zingiberaceae merupakan tumbuhan obat yang menjadi komoditas unggulan. Kabupaten Semarang merupakan salah satu sentra distribusi Zingeberaceae. Faktor lingkungan yang mempengaruhi distribusi Zingiberaceae adalah ketinggian tempat, kelembaban, suhu udara, pH tanah, dan intensitas cahaya. Tujuan penelitian ini adalah untuk mengkaji jenis-jenis tumbuhan anggota Zingeberaceae, distribusi Zingiberaceae, dan pengaruh ketinggian tempat terhadap distribusi Zingiberaceae di Kabupaten Semarang. Penelitian dilaksanakan pada bulan September sampai November 2010. Pengambilan sampel tumbuhan famili Zingiberaceae dilakukan di lima kecamatan Kabupaten yang memiliki ketinggian berbeda . Analisis data dilakukan dengan menggunakan indeks nilai penting, derajat konstansi, dan analisis korelasi pengaruh ketinggian tempat terhadap distribusi Zingiberaceae. Dari hasil penelitian didapatkan 12 jenis dan satu varietas tumbuhan anggota Zingeberaceae di Kabupaten Semarang. Jenis yang mempunyai nilai penting tinggi adalah Curcuma domestica (kunyit) dan Amomun cardomomum (kapulaga).  Jenis  yang mempunyai distribusi paling luas di Kabupaten Semarang adalah Amomum cardomomum, Curcuma xanthorrhiza, Curcuma domestica, Zingiber americans dan Zingiber officinale. Kata kunci : Distribusi, Zingiberaceae, Ketinggian Tempat, Kabupaten Semarang.
Struktur Komunitas Plankton sebagai Indikator Kualitas Perairan Budidaya di Tambak Lorok Semarang Makhfudhoh, Dzunnuroini Khanif; Hidayat, Jafron Wasiq; Muhammad, Fuad
Bioma : Berkala Ilmiah Biologi Vol. 20, No 2, Tahun 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/bioma.20.2.145-153

Abstract

Plankton is organisms that had an important role in water as natural feed of fishes and as an indicator. This study aimed to identify water quality which was suitable for fish cultivation reviewed from physics-chemicals parameters of water and its saprobic status in Tambak Lorok Tanjung Mas Kota Semarang. Sampling were take based on 5 stations that could represented from plankton variety of condition water stability . Plankton samples were by using net plankton number 25, then preserved with alcohol 70% and formalin 4%. Variables of ponds water quality measured were temperature, salinity, dissolved oxygen, pH, turbidity, N concentration, and Pb content. Identification of planktons used SRC method under microscop. The result of plankton analysis in Tambak Lorok water showed 42 phytoplankton species, the commonly species found are Coscinodiscus centralis, Coscinodiscus granii, Gyrosigma sp., Navicula radiosa, Pandorina sp., and Melosira sp. Meanwhile, zooplankton found was 22 species with common species are Cyclops, Harpaticoida, Tricodesmium evythraeum, Brachinus plicatilis, and Lensia subtilis. Phytoplankton diversity index are 0.057-0.367 and equity index are 0.025-0.176. Zooplankton diversity index are 0.247-0.360 and equity index are 0.157-0.201. This indices showed that there were low level of species diversity and community stability, dominance since the species occurred. Measurement of water quality variables indicated that Tambak Lorok had been contaminated and needed a preliminary management before d be used as fish cultivation ponds, because the analysis result was not appropriate with Government water quality  regulation. Based on the measurement, soprobic index categories on α/β-Mesosaprobic to Oligosaprobic phase and the degree of pollution is very mild to moderate. Keywords :  Community Structure, plankton, Tambak Lorok, Tanjung Mas, Semarang   
Keragaman Jenis dan Kelimpahan Populasi Penggerek Batang Padi dan Serangga Lain Berpotensi Hama Pada Ekosistem Sawah Organik Hadi, Mochamad; Soesilohadi, RC Hidayat; Wagiman, FX; Soehardjono, Yayuk Rahayuningsih
Bioma : Berkala Ilmiah Biologi Vol. 15, No.2, Tahun 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (80.643 KB) | DOI: 10.14710/bioma.15.2.58-63

Abstract

Rice stem borer is a main pest of paddy rice in Central Java. The main rice stem borer are yellow rice borer, Scirpophaga incertulas Walker, and white rice borer, S. innonata Walker. Other species are pink borer Sesamia inferens Walker, striped rice borer Chilo suppressalis Walker, dark-headed rice borer, C. polychrysus Meyrick, and glossy rice borer, C. auricilius Dudgeon. Besides rice stem borer, there are many other insect which are potential as rice pest, i.e., grasshopper, rice ear bug, brown planthopper, etc. Organic agriculture in Central Java have not been applied yet, hence there is still lack of information, including species diversity information and abundance of rice stem borer population and other potential insect pest on rice. Species diversity and population abundance of rice stem borer and other potential insect in organic rice ecosystem differ with the inorganic one. The objective of this research is to study species diversity and abundance of rice stem borer population and other potential pest in organic rice ecosystem. The study was conducted in organic rice of Bakalrejo Village, Susukan Sub district, District of Semarang. Species diversity and population abundance was analyzed using Shanon-Wiener’s species diversity index (H’), population abundance index (Di), and population evenness index (e). Pattern of  species diversity, population abundance, population evenness were temporally analyzed using population dynamic curve. Sampling of species diversity and population abundance was performed during a crop planting season with twice of sampling frequency. The result shows that rice stem borer found  were yellow rice borer with its population fluctuated temporally and pink rice borer with  its population were few and scarce. The highest diversity found during rice generative phase until ripen and decline in line with the age of rice. Species diversity index in vegetative phase was below 2, while during generative phase until ripen increased above 2. Insect population abundance declined in the end vegetative phase and increased in the beginning of reproductive phase until ripen phase. Population evenness index in all growth phase of rice were relatively high and similar. Keywords : organic rice, rice stem borer, insect pest of rice.
Struktur Komunitas Mikroartropoda Tanah di Lahan Penambangan Galian C Rowosari, Kecamatan Tembalang, Semarang Larasati, Wiatri; Rahadian, Rully; Hadi, Mochamad
Bioma : Berkala Ilmiah Biologi Vol. 18, No.1, Tahun 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.509 KB) | DOI: 10.14710/bioma.18.2.79-88

Abstract

Rowosari miningsite isthe ‘C’ type of excavation area in Semarang. Mining activities may affect environmental disturbance, including on soil fauna. This research aims to determine the community structure of soil microarthropods in Rowosari mining area. The research was conducted in August-September 2015. Soil samples were taken on diagonal plot of 5x5 m2 with a five-point sampling on two stations, namely Post Mining Area (PoMA) and Pre Mining Area (PeMA). The analysis used in the research are relative abundance index, Shannon-Weiner diversity index, evenness index, and Sorensen similarity index. The results shows that there are 360-660 individuals/m2 from 10 ordo and 24 taxa found in Rowosari Excavation Site. The highest relative abundance index is Carabidae (22,22) in PoMA station and Prostigmata (21,21) in PeMA station. The diversity both station belongs to medium category (2,43-2,45). The highest evenness index is 0,95. The similarity taxa of soil microarthropods in two stations are categorized as medium. Community structure of soil microathropods in Post Mining Area and Pre Mining Areawere no significant differences. Keywords: Community structure, Soil microarthropods, Miningexcavation C.

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