Articles

Struktur Komunitas Mikroartropoda Tanah di Lahan Penambangan Galian C Rowosari, Kecamatan Tembalang, Semarang Larasati, Wiatri; Rahadian, Rully; Hadi, Mochamad
Bioma Vol. 18, No.1, Tahun 2016
Publisher : Bioma

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.
PERILAKU BERTELUR DAN SIKLUS HIDUP Aedes aegypti PADA BERBAGAI MEDIA AIR Agustin, Indira; Tarwotjo, Udi; Rahadian, Rully
Jurnal Akademika Biologi Vol. 6 No. 4 Oktober 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Aedes aegypti is the main vector that transmits dengue fever. The spread of Aedes aegypti mosquitos in Indonesia is very wide. This mosquito has its breeding site in clear water areas such as in the bath water containers, flower pots, pet containers as well as in the used goods that can hold stagnant water. However, the environmental conditions which are constantly changing due to the rampant pollution cause Ae. Aegypti to continue to adapt to its breeding environment. This research aims to find out the egg laying behavior, life cycle and mediums preferences selected by Aedes aegypti mosquitos in different water mediums. Stages of the research which are conducted include: preparation of research tools and materials, observation on Ae. Aegypti mosquitos’ preferences, observation on egg hatchability and life cycle of Ae. Aegypti in various water mediums. The result shows that from all contaminated water mediums which are tested, Ae. Aegypti mosquitos have the preference of laying eggs in Eichhornia crassipes water mediums, followed by leachate water mediums, whereas in tofu wastewater mediums and laundry waste, there were no eggs found. Meanwhile, in another study, it is known that the egg hatchability and life cycle of Ae. Aegypti mosquitos in contaminated water mediums such Eichhornia crassipes immersed water mediums, and leachate water are not significantly different from controlled water mediums (uncontaminated). The result of the research is expected to be the reference for relevant institute in expanding the eradication of Ae. Aegypti mosquitos to places that have been unusual for eradication.Keywords: Aedes aegypti, Eichhornia crassipes immersed water, Leachate, laundry waste, tofu wastewater
UJI EFIKASI BEBERAPA ISOLAT BAKTERI ENTOMOPATOGEN TERHADAP KECOA (Orthoptera) Periplaneta americana (L.) DAN Blatella germanica (L.) DALAM SKALA LABORATORIUM Rini, Monaliza Sekar; Rahadian, Rully; Hadi, mochamad; Zulfiana, Deni
Jurnal Akademika Biologi Vol. 5 No. 2 April 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Cockroaches are the insect vectors of disease that can cause adverse effects on human health. Control cockroaches excessive use of insecticides can lead to residues in the environment and resistance cockroach. Therefore it is necessary to control the use of alternatives such as by biological agents such as entomopathogenic bacteria. This research used two isolates of entomopathogenic bacteria isolated from Spodoptera litura were found dead, Bacillus thuringiensis IPBCC collection and sterile distilled water as a control. Tests conducted by the spray and bait method at a concentration of 108. The results showed that all isolates entomopathogenic bacteria used in this research can cause mortality of cockroaches. Morphological observation and Koch's postulates test showed that the mortality of cockroaches likely caused by bacterial isolates were granted. SP4 bacterial isolates using spray method provides the highest mortality was 26.67% of the P. americana and 80% against B. germanica. Isolates of B. thuringiensis using bait influence the highest mortality of 10% of the P. americana and 6.67% against B. germanica. LT-50 was the most effective method of treatment of bacterial isolates SP4 spray against B. germanica was 2 hours 30 minutes 46 seconds.Keywords: Biological control, entomopathogenic bacterial, efficacy test
IDENTIFIKASI KANDUNGAN SENYAWA FITOKIMIA MINYAK BIJI MIMBA (Azadirachta Indica, A. Juss) Palupi, Dyah; Kusdiyantini, Endang; Rahadian, Rully; Prianto, A Heru
Jurnal Akademika Biologi Vol. 5 No. 3 Juli 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Neem seeds oil (Azadirachta indica, A. Juss) have phytochemical compounds which act as antifeedant, repellent, antibacterial, and antifungal. The neem seeds oil were important identified their phytochemical compounds. Identifications were done with screening phytochemical and infrared spectrophotometer. Neem seed oils were obatained with pressing method. The group of compounds tested were alkaloid, flavonoid, triterpenoid, steroid, saponin and tannin. The results of phytochemical showed that neem seeds oil consist of alkaloid, flavonoid, triterpenoid, steroid, saponin and tannin. This results were strengthned with spectrum in infrared spectrophotometer that showed the functional groups of each those compounds. Keywords: neem seeds oil, phytochemical compounds, pressing method, functional groups
Community structure of algae epiphytic in different leaf litter of mangroves Hariyati, Riche; Suedy, Sri Widodo Agung; Rahadian, Rully
NICHE Journal of Tropical Biology Vol. 1, No. 2, Year 2018
Publisher : Department of Biology, Faculty of Sciences and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.685 KB) | DOI: 10.14710/niche.1.2.30-34

Abstract

Mangrove is a plant that has the morphological and physiological adaptations to habitats which influenced by a tide. This plant can grow and develop in an environment of high salinity and its soil conditions are less stable and aerobic. Litter mangrove is the main source for the availability of detritus and is the largest component constituent of a food web in a mangrove ecosystem environment. Algae epiphytic microalgae is a group that lives attached to the plant, including the mangrove litter. The study aims to assess the abundance and diversity of epiphytic algae on different types of mangrove leaf litter. The observed mangroves leaf litter were Avicennia alba, Sonneratia sp. and Rhizophora sp. Epiphytic algae were brushed on mangrove leaf litter covering an area of 6.25 cm2 and diluted with distilled water. Samples were observed under a microscope with a magnification of 400 x. Water quality parameters were measured in situ and the organic ingredients, total N and P were analyzed. The results showed that epiphytic algae on each type of mangrove leaf litter were not different. Rhizophora sp is the most abundant and the richest species compared with other types of litter that are equal to 622 individuals / cm2 and 26 species of epiphytic algae. While the abundance of Avicennia alba and Sonneratia sp were 459 ind/cm2 and 321 ind /cm2, in the coastal mangrove areas of Morodemak was found 28 species of epiphytic algae. The common epiphytic algae species found in all types of mangrove litter were Cymbella sp., Coscinodiscus sp., and Synedra ulna. In general, the group of Bacillariophyta (diatoms) is the dominant species in some mangrove leaf. 
Pengaruh Biostarter Pengurai Bahan Organik Terhadap Kapasitas Infiltrasi Air dan Struktur Komunitas Mesofauna Tanah Andriani, Latifah Fitria; Rahadian, Rully; Hadi, Mochammad
SAINS DAN MATEMATIKA Volume 20 Nomor 1 Tahun 2012
Publisher : SAINS DAN MATEMATIKA

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Abstract

Peran mikroorganisme dan fauna tanah dalam menentukan kualitas tanah telah diketahui cukup luas, namun perannya terhadap kapasitas infiltrasi air belum banyak dikaji. Penelitian ini secara umum bertujuan untuk mengetahui pengaruh biostarter berupa inokulan mikroba komersial untuk perbaikan kualitas tanah. Secara khusus penelitian ini bertujuan untuk mengetahui pengaruh produk biostarter terhadap struktur komunitas mesofauna tanah dan laju infiltrasi air serta korelasi antara struktur komunitas mesofauna tanah dengan kapasitas infiltrasi. Penelitian ini menggunakan Rancangan Acak Lengkap faktor tunggal dengan empat perlakuan biostarter  yaitu EM4, Bioklin, Mig Dec, dan Orgadec. Periode sampling dilakukan dua kali pada hari ke 30 dan hari ke 50 inkubasi. Hasil penelitian menunjukkan bahwa penambahan biostarter memengaruhi struktur komunitas mesofauna tanah, khususnya berpengaruh positif terhadap kelimpahan Oribatida dan Mesostigmata.  Produk Orgadec secara konsisten mampu meningkatkan kelimpahan mesofauna tanah paling tinggi pada 30 hari maupun 50 hari. Laju infiltrasi  pada umur  inkubasi 30 hari menunjukkan adanya perbedaan yang nyata pada perlakuan Orgadec saja, sedangkan pada umur 50 hari, perbedaan secara nyata ditunjukkan pada perlakuan EM4, Mig Dec dan Orgadec. Secara statistik, total kelimpahan mesofauna tanah dan kelimpahan Oribatida menunjukkan perbedaan yang nyata dengan laju infiltrasi.Keywords: biostarter, struktur komunitas, mesofauna tanah, laju infiltrasi
Pengaruh Biostarter Pengurai Bahan Organik Terhadap Kapasitas Infiltrasi Air dan Struktur Komunitas Mesofauna Tanah Andriani, Latifah Fitria; Rahadian, Rully
JURNAL SAINS DAN MATEMATIKA Volume 20 Issue 1 Year 2012
Publisher : JURNAL SAINS DAN MATEMATIKA

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Abstract

Peran mikroorganisme dan fauna tanah dalam menentukan kualitas tanah telah diketahui cukup luas, namun perannya terhadap kapasitas infiltrasi air belum banyak dikaji. Penelitian ini secara umum bertujuan untuk mengetahui pengaruh biostarter berupa inokulan mikroba komersial untuk perbaikan kualitas tanah. Secara khusus penelitian ini bertujuan untuk mengetahui pengaruh produk biostarter terhadap struktur komunitas mesofauna tanah dan laju infiltrasi air serta korelasi antara struktur komunitas mesofauna tanah dengan kapasitas infiltrasi. Penelitian ini menggunakan Rancangan Acak Lengkap faktor tunggal dengan empat perlakuan biostarter yaitu EM4, Bioklin, Mig Dec, dan Orgadec. Periode sampling dilakukan dua kali pada hari ke 30 dan hari ke 50 inkubasi. Hasil penelitian menunjukkan bahwa penambahan biostarter memengaruhi struktur komunitas mesofauna tanah, khususnya berpengaruh positif terhadap kelimpahan Oribatida dan Mesostigmata. Produk Orgadec secara konsisten mampu meningkatkan kelimpahan mesofauna tanah paling tinggi pada  30 hari maupun 50 hari. Laju infiltrasi pada umur inkubasi 30 hari menunjukkan adanya perbedaan yang nyata pada perlakuan Orgadec saja, sedangkan pada umur 50 hari, perbedaan secara nyata ditunjukkan pada perlakuan EM4, Mig Dec dan Orgadec. Secara statistik, total kelimpahan mesofauna tanah dan kelimpahan Oribatida menunjukkan perbedaan yang nyata dengan laju infiltrasi.   Keywords: biostarter, struktur komunitas, mesofauna tanah, laju infiltrasi
The Effectiveness of Plastic Mulch for Maintaining the Potato Farmland in Dieng Plateau Using Soil Biological Quality Index Agustina, Dian; Tarwotjo, Udi; Rahadian, Rully
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 1 (2019): April 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v11i1.17804

Abstract

Dieng farmers apply plastic mulch to reduce erosion and to prevent the loss of nutrients. This study aimed to determine the effectiveness of plastic mulch in maintaining the quality of potato farmland using the Soil Biological Quality Index (QBS-ar) based on the existence of microarthropods. Soil sampling was conducted in six different locations, i.e., flat area with mulch, sloped area with mulch, the flat area without mulch, sloped area without mulch, flat forest area, and sloped forest area. Microarthropods were obtained from soil samples using a Berlese Funnel method. Soil quality was analyzed using QBS-ar index which was calculated based on Eco-morphological Index (EMI). The results showed that the value of QBS-ar index in potato farmland with the use of plastic mulch was much higher than in farmland without plastic mulch in bothflat and sloped area. Compared to the soil in the forest area, the value of QBS-ar index in farmland with the use of plastic mulch, especially in the flat area, was relatively similar. Hence, the use of plastic mulch for potato cultivation in the hilly area is effective in maintaining soil quality. This finding would be beneficial for developing a soil conservation strategy to achieve sustainable agriculture in Dieng agricultural area.
Struktur Komunitas Mikroartropoda Tanah Di Hutan Wisata Gonoharjo Kecamatan Limbangan Kabupaten Kendal Wahyu Nugroho, Nindta Putra; Rahadian, Rully; Hadi, Mochamad
Bioma Vol. 15, No.1, Tahun 2013
Publisher : Bioma

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (147.705 KB) | DOI: 10.14710/bioma, 15, 1, 35-41

Abstract

The study on community structure of soil microarthropod in Gonoharjo Tourism Forest has been done. The objective of this research are to compare community structure of soil microartropod and to know the effect of abiotic environmental factors on abundance of soil microarthropod in Tourism Forest of Gonoharjo. This research was conducted using transect method in four sampling locations i.e., coffe vegetation, pine vegetation, mixed vegetation in hot spring water area, and mixed vegetation of riverside area. Soil sampling were used soil corer, and then the sample were extracted using barlese-tullgren. The finding shows 4 Sub Orders and 22 Families from 10 Orders. Acari was the most dominant group in each observed locations. The most diverse was found in mixed vegetation on hot spring water area, while the least one was found in coffe vegetation. Then, the highest evenness index was found in mixed vegetation on riverside area, while the lowest evenness was found in coffe vegetation. Moreover , the richest soil microarthropods found in mixed vegetation on hot spring water area and the lowest richness was found in mixed vegetation on riverside area. Statistically, abiotic environmental factors that have big impact on soil microarthropod abundance were soil organic matter, soil pH, and soil moisture. .   Keywords : community structure, soil microarthropod, Acari, Tourism Forest of Gonoharjo
Keanekaragaman Makroarthropoda Tanah di Lahan Persawahan Padi Organik dan Anorganik, Desa Bakalrejo Kecamatan Susukan Kabupaten Semarang Witriyanto, Roma; Hadi, Mochamad; Rahadian, Rully
Bioma Vol. 17, No.1, Tahun 2015
Publisher : Bioma

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (76.811 KB) | DOI: 10.14710/bioma, 17, 1, 21-26

Abstract

Inorganic paddies system has a negative impact as pests become resistant, environmental pollution and residual hazard. People who are aware of the impact of the application of synthetic chemicals have been applying organic farming. This research aimed to compare the abundance, diversity and dominance of soil macroarthropods  in the organic and inorganic paddies field in Village Bakalrejo, Susukan District of Kabupaten Semarang. Sampling of soil macroarthropods method used pit fall traps . Fifteen pit fall traps were set up in the research area and they were divided into three line whith respective line are 5 pit fall traps. Soil macroarthropods  which has been found were identified up to family taxon. The results of the research shows abundance of soil macroarthropods organic rice in paddy fields higher (297) than in inorganic paddy fields (236). Diversity of soil macroarthropods in every phase of rice growth (vegetative, reproductive, ripening and post-harvest) was higher in organic paddy fields (1,479; 1,644; 1,561; 1,019) than inorganic paddy fields (1.391; 0.595; 1.286; 1.002). Based on the relative abundance index, soil macroarthropods family dominated organic paddy fields in every phase of rice growth (vegetative, reproductive, ripening, and post-harvest) was lower (Gryllidae: 39.4%; Carabidae: 46.7%; Formicidae: 44.1 %; Formicidae: 48.8%) than in the inorganic paddy fields (Carabidae: 35.5%; Carabidae: 57.4%; Formicidae: 56.3%; Formicidae: 77.6%). Key words :  biodiversity, soil macroarthropods, organic farming.