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Journal : Jurnal Akademika Biologi

Struktur Komunitas Plankton di Kawasan Wana Wisata Curug Semirang Kecamatan Ungaran Barat, Semarang Delliana Ratna Sari; Jafron Wasiq Hidayat; Riche Hariyati
Jurnal Akademika Biologi Vol. 7 No. 4 Oktober 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Tujuan penelitian untuk mengetahui struktur komunitas plankton dan  mengetahui faktor-faktor fisika dan kimia yang berpengaruh dalam struktur komunitas plankton di Semirang. Penelitian ini dilakukan pada 6 stasiun dengan kondisi badan air yang berbeda. Hasil penelitian menujukkan bahwa jumlah jenis plankton yang diperoleh yaitu 12 spesies dalam  Divisi Bacillariophyta. Jenis Plankton yang banyak ditemukan adalah  Achnanthes sp, Cymbella tropica dan Cocconeis pediculus. Indeks kemelimpahan relatif termasuk ke dalam kategori jenis dominan. Indeks keanekaragaman plankton sebagian besar termasuk ke dalam katagori sedang. Indeks pemerataan termasuk ke dalam kategori persebaran merata, tidak ada dominasi suatu jenis. Indeks similaritas sebagian besar termasuk ke dalam katagori tinggi. Faktor fisika dan kimia pada perairan ini memilki kualitas air yang baik untuk kehidupan plankton. 
PERTUMBUHAN POPULASI CHLORELLA VULGARIS BEIJERINCK DENGAN PERLAKUAN PENAMBAHAN LOGAM BERAT TEMBAGA (CU) PADA SKALA LABORATORIUM Hermawan Setiyo Budi Hartanto; Riche Hariyati; Tri Retnaningsih Soeprobowati
Jurnal Akademika Biologi Vol. 2 No. 1 Januari 2013
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Environmental pollution has become a serious problem in marine environment. Inorganic pollutants was harmful to the environment because difficult to decompose naturally, therefore induce  environmental damage. One anorganic pollutants agent is heavy metal copper (Cu). Algae have a high tolerance to heavy metal copper stress in the environment so it can be used as a bioremediation agent, such as  Chlorella vulgaris Beijerinck. This study aimed to determine the effect of copper to the population growth of Chlorella vulgaris Beijerinck. Research was carried out by inoculated Chlorella vulgaris Beijerinck in seawater culture medium containing copper (Cu) with concentration 0.05 ppm, 0.5 ppm, 5 ppm, and 25 ppm, respectively.  Observation of the growth of Chlorella vulgaris Beijerinck were performed every 24 hours for 14 days by Improved Neubauer Haemocytometer. The results showed that copper with concentration 0.05 ppm and 0.5 ppm increased Chlorella vulgaris Beijerinck  growth populations at day three and  it also inhibit Chlorella growth until day eigth. Chlorella  population then increased sigificantly at day eight until day fourteen of observation.  Copper  with concentration  5 ppm and  25 ppm decreased the population of Chlorella vulgaris Beijerinck and then increased its population at day six. Chlorella population then decreased at ten day of observation.   Key words: growth, heavy metals copper (Cu), Chlorella vulgaris Beijerinck, bioremediation
PENGARUH PERBEDAANKADAR LOGAM BERATKROMIUM (Cr) TERHADAPPERTUMBUHAN POPULASISpirulina platensis (Gomont) Geitler DALAM SKALA LABORATORIUM Ahmad Yusuf Afandi; Tri Retnaningsih Soeprobowati; Riche Hariyati
Jurnal Akademika Biologi Vol. 3 No. 3 Juli 2014
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Industrial products such as metal and paint had generate hazardous wastes, one of then is a heavy metal Chromium (Cr). Industrial wastes containing Cr may cause many negative effects when directly discharged to environment without any prior processing. Therefore, recovery actions (remediation) is one of many ways to solve the problem. Phycoremediation is one of remediation that is simple, efficient and safe in process by using the microalgae to remediate the environment, and one of the microalgae is Spirulina platensis (Gomont) Geitler. This study was conducted to determine the effect and the removal efficiency of heavy metals Cr on Spirulina platensis culture media. The results showed there was significant influence between the administration of heavy metal Cr 1 mg/l, 3 mg/l and 5 mg/l Cr on the population growth of S. platensis. Heavy metal Cr concentration of 1 mg/l increased the growth of S. platensis, while the opposite happened when administrated with 3 mg/l and 5 mg/l. Higher concentration of heavy metal Cr on culture media decreased population of S. platensis. The culture added with heavy metal Cr concentration of 1 mg/l, 3 mg/l and 5 mg/l on the 7 days treatment were able to decrease heavy metal Cr level respectively 35%, 14% and 8%. Thus, the longer treatment days the bigger decrease percentage concentration of heavy metal Cr. Keywords: Cr, phycoremediation, microlagae, Spirulina platensis
PENGARUH LIMBAH CAIR TAHU TERHADAP PERTUMBUHAN POPULASI CHLORELLA PYRENOIDOSA H. CHICK DALAM SKALA LABORATORIUM Fatmawati Munir; Riche Hariyati; Erry Wiryani
Jurnal Akademika Biologi Vol. 6 No. 2 April 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Chlorella pyrenoidosa H.Chick is one of abundant microalgae in Indonesia and mostly cultivated due to its characters which are fast and easily transplanted. Tofu liquid waste contains nutrient which is needed by mikroalga because it contains inorganic content such as carbon, nitrogen, phosphorus, potassium. This research is to study the influence of difference concentration of tofu liquid waste towards population growth of C. pyrenoidosa and concentration level of  tofu liquid waste towards population growth of C. pyrenoidosa. The method is by cultivating C. pyrenoidosa H.Chick through the water media which has been given any tofu liquid waste concentration which functions as nutrient source for microalgae. The tofu liquid waste concentration  is consisting of0% as control, 15%, 30%, 45% and 60% and it’s conducted by three times repetition.  The obtained data was tested by ANOVA. As the F score was different then continued by Duncan test. The result shows that the optimal peak of microalgae’s population growth could befound in media with 15% concentration of tofu liquid waste, 337.500 cell/ml, then another control(0%), 170.000 cell/ml and 30%, 119.167 cell/ml, 45%, 81.667 cell/ml. The solidity of lowest population in  60%  concentration showed 65.833 cell/ml. This  findings  has showed that thedifferent handling of concentration towards tofu liquid waste has influenced on C. pyrenoidosapopulation growth. The optimal growth reaches at 15% concentration of  tofu liquid waste. Keywords: Chlorella pyrenoidosa, population, waste, liquid, tofu
KOMPOSISI DAN POLA SEBARAN POLYCHAETA DI PESISIR MANGKANG KULON KECAMATAN TUGU, SEMARANG BERDASARKAN TATA GUNA LAHAN Syarif Prasetyo; Sapto punomo Putro; Riche Hariyati
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Polychaeta is a biota that became one component of the food chain in the ocean. Having different tolerances, so it is often used as an indicator of changes in water quality. This study examines the composition of polychaeta which includes abundance, dominance, diversity, evennes, and its distribution patterns at two different locations, ie mangrove vegetation and fish farming areas. Location was chosen by looking the land use’s differences in the coastal area of Mangkang Kulon Tugu Subistrict Semarang. Sampling was conducted in July and August 2012. Analysis of physico-chemical parameters to the water samples and the substrate did directly in the field and laboratory. Samples of polychaeta were obtained by a 1 mm benthic sieve. Identifications are made to genus level. Then, calculating the number of genus, abundance, dominance, evennes, diversity and distribution patterns in each station. Overall, there are 15 genus come from polychaeta, they are Capitellidea, Nereididae,  Spionidae, Dorvillidae, Lumbrineridae, Cirratulidae, Oenoidae and Sabellidae. The average of polychaeta abundance index is in the above of 500 ind/m2. Diversity index (H') is relatively sufficient (1,332-2,073). Evennes index value (E) is high (>0,6) and there is no dominat genus with dominant index (D) low (<0.5). The distribution pattern is the same (Id: <1). The Differences sampling location affect on the composition and distribution patterns of the Polychaeta and physico-chemical factors. While sampling time does not affect the composition and distribution patterns of polychaeta and physico-chemical factors waters. Capitellidae is an opportunistic polychaeta that is more common in fish farming areas (70-81%) than in the mangorove vegetation areas (59 -72%). Keywords: Polychaeta, Mangkang Kulon, mangrove, fish farming, composition, distribution pattern,
Keanekaragaman Fitoplankton Pada Tambak Udang Vaname (Litopenaeus Vannamei) di Tireman Kabupaten Rembang Jawa Tengah Indah Riasih Umami; Riche Hariyati; Sri Utami
Jurnal Akademika Biologi Vol. 7 No.3 Juli 2018
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Budidaya udang Vaname (Litopenaeus vannamei) menjadi andalan komoditas peningkatan perekonomian petani tambak di Indonesia. Fitoplankton merupakan salah satu mikrorganisme yang dapat dijadikan pengukur produktivitas primer perairan karena fitoplankton mampu melakukan fotosintesi dan hasil dari fotosintesis berupa oksigen yang dapat dimanfaatkan oleh biota di dalam perairan. Penelitian ini bertujuan untuk mengetahui keanekaragaman fitoplankton dan kualitas perairan tambak. Metode pengambilan sampel fitoplankton dengan puporsive random sampling. Analisis data menggunakan indeks keanekaragaman Shanon Wiener (H’), indeks keseragaman (e), indeks dominansi (D), dan kelimpahan. Hasil penelitian menunjukan bahwa jenis fitoplankton berjumlah 14 jenis yang tergolong ke dalam kelas Bacillirophyceae 6 Chlorophyceae 2 jenis, Cyanophyceae 4 jenis, dan Dinophyceae 2 jenis. Jenis fitoplankton yang paling banyak ditemui selama penelitian yaitu Skletonema costatum pada stasiun 3 yang tergolong dari kelas Bacillirophyceae. Indeks Keanekaragaman (H’) berkisar antara 1,42 – 2,16. Nilai tersebut menggambarkan keanekaragaman jenis fitoplankton dalam tingkat sedang. Nilai indeks pemerataan (e) berkisar antara 0,59 – 0,98 yang menggambarkan jenis fitoplankton dinyatakan merata. Nilai indeks dominansi (D) berkisar antara 0,12 – 0,36 yang menggambarkan tidak ada jenis yang mendominasi. Kualitas perairan tambak udang Vaname berdasarkan DO, suhu, salinitas, pH, kecerahan, dan kandungan nitrat-fosfat masih baik digunakan untuk budidaya udang.
KEANEKARAGAMAN JENIS IKAN TANGKAP DI SEKITAR KARAMBA DAERAH NGASINAN WADUK KEDUNGOMBO JAWA TENGAH Anang Yunianto; Sapto Punomo Putro; Riche Hariyati
Jurnal Akademika Biologi Vol. 1 No. 1 Oktober 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Nowadays the fish farming activity in the Kedungombo reservoir tends to increase gradually. The knowledge of diversity and abundance of  fish species would be usefull to preserve the ecosystem of the reservoir. The improving management of water resources reservoirs is also needed to increase the economy of local community. The purpose of this study is to determine the diversity and abundance of fish found in the area around Kedungombo reservoir. The study is explorative. Sampling was done randomly at 5 stations. Data analysis was done to determine the similiaritas index (Di), diversity index (H '), evenness index (e), relative abundance. Hutcheson t test was carried out to determine differences in species diversity at July and August with five-point observation stations.  Based on the results of the study, during the months of July to August, there are 8 species, namely: Silver barb (Barbonymus gonionotus), tilapia (Oreochromis niloticus), Mujair (Oreochromis mossambicus), catfish (Pangasius sutchi), Betutu (Oxyeleotris marmorata), Red Devil (Amphilophus labiatus), Redoson (Trichogaster trichopterus) and Gurame (Osphronemus goramy). The level of diversity and evenness of fish are considerably low. Silver barb fish dominated in relative abundance. Hutcheson t test results showed no difference in fish species diversity, indicated by t count <t table at the 95% confidence level. Water quality, light brightness and sediments were considered as a suitable habitat for fish. This study implies that other studies at the other regions are needed to assess the diversity of tropical fish
STRUKTUR KOMUNITAS PLANKTON DI KAWASAN WANA WISATA CURUG SEMIRANG KECAMATAN UNGARAN BARAT, SEMARANG Delliana Ratna Sari; Jafron Wasiq Hidayat; Riche Hariyati
Jurnal Akademika Biologi Vol. 6 No. 2 April 2017
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

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Abstract

Objective of the study was to know the structure of plankton community and to know the influential physical and chemical factors in the structure of plankton community in Semirang. This research was conducted on 6 stations with different water body condition. Results showed that the number of plankton species obtained were 12 species in the Bacillariophyta Division. Plankton species that widely found were Achnanthes sp, Cymbella tropica and Cocconeis pediculus. The relative abundance index categorized into the dominant species category. The plankton diversity index were mostly included in the moderate category. Similarity index belongs to the category of even distribution, none dominance of a kind. The similarity index is mostly included in the high category. Physical and chemical factors in these waters have good water quality for plankton life.  Keywords: plankton community structure, freshwater, ecotourism waterfall Semirang