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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 342 Documents
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Interaksi Makroalgae dan Lingkungan Perairan Teluk Carita Pandeglang Achmad Kadi
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 34, No 1 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2017.34.1.391

Abstract

Makroalgae liar adalah flora perairan laut, tumbuh berada di paparan terumbu karang.  termasuk dalam Chlorophyceae. Phaeophyceae dan Rhodophyceae, tumbuh Penelitian menggunakan metode transek quadrat pada October Tahun 20016. Setiap stasiun transek ditarik garis tegak lurus pantai. Hasil penelitian makroalgae di determinasi; kekayaan jenis, densitas dan interaksi makroalgae dengan temperatur, turbiditas, pH, salinitas serta oksigen terlarut. Makroalgae yang peroleh ada 18 jenis  dengan nilai indeks keanekaragaman berada di Pantai Matahari Utara 0,219, Matahari Tengah 0,24 dan Matahari Selatan 0,213. Nilai indeks kemerataan tertinggi 0,240 berada di Matahari Tengah.Interaksi kekayaan dan kepadatan jenis berpengaruh dengan stasiun (Spearman rank   rs = 0,521*;  rs =  0,552*  ) berada Matahari Tengah dan Matahari Utara. Intaraksi tertinggi makroalagae dengan faktor suhu (spearman rank rs = 0,687** ) sangat berpengaruh terhadap  jenis Eucheuma spinosum.
Floristics Composition of Tomong Forest at Sambas, West Kalimantan Syamsul Hidayat; Sudarmono Sudarmono
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 2 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.2.110

Abstract

Keanekaragaman Kupu-Kupu (Lepidoptera) pada Empat Tipe Habitat di Hutan Lindung Gunung Klabat, Sulawesi Utara Roni Koneri; Saroyo Saroyo
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 28, No 2 (2011)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2011.28.2.264

Abstract

The objective of the research was to study the diversity of butterfly (Lepidoptera) in four habitat types  in  Mt Klabat protection forest, North Sulawesi. This research had been conducted over three months using a sweeping technique applied to follow the line transect length of 1000 meters at random in each habitat type (primary forest, secondary forest, gardens and shrubs). The results showed that there were 3 families namely Papilionidae, Nymphalidae and Pieridae, with the number of 29 species and 1014 individuals. The value of diversity based on Shannon and  Wienner diversity index and the highest was found in the garden (H = 2,24) followed by shrubs  (H = 2,12) and the lowest in secondary forests (H = 1,97). Based on the index Sorensen similarity (Cn) the composition of butterfly species found in primary forest has a high similarity value with secondary forest ((IS = 0,86), while the lowest among primary forest with garden (IS = 0,71). The result of This research is expected to be the basic data on butterfly diversity and effects of habitat changes on the diversity and distribution of butterfly in North Sulawesi
Perubahan Struktur Mikroanatomi Intestinum dan Hepar Ikan Mas (Cyprinus carpio) karena Pemberian Logam Berat Zn Hirawati Muliani
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 23, No 3 (2006)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2006.23.3.168

Abstract

Heavy metal Zn comes into waters from paint and textile factories that have not adequately treated their waste. Small amount of Zn is necessary for metabolic activity of aquatic organisms, but it may cause toxicity when presents in abundance. This study was conducted to know differences between Zn effects on microanatomy structures of intestine and those on liver of Cyprinus carpio. The treatments arranged in a Completely Randomized Design (CRD) consisted of 0 ppm (control), 2 ppm, 4 ppm, and 6 ppm of Zn, which were applied respectively for 96 hours and replicated five times. The observed parameters were height of columnar epithellial cells of intestine and hepatocyte diameter. Data were analysed with F test followed by Least Significant Difference (LSD). The results showed that there was significant difference among treatments indicating that Zn affected microanatomy structures of intestine and liver of the fish.  Increase in height of columnar epithellial cells of intestine was recorded to begin at level of 4 ppm, while that in hepatocyte diameter was found to begin at level of 6 ppm.
Syzygium (Myrtaceae) di sepanjang Sungai Welang Taman Wisata Alam Gunung Baung Purwodadi Deden Mudiana
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.916

Abstract

Syzygium is one of a genus within family Myrtaceae which consists of many potentially useful species. This genus is quite distributed covering most of Indonesian geographical area. This research was aimed to evaluate species richness of Syzygium grows naturally along River Welang, Taman Wisata Alam Mount Baung, and its habitat. This was done by an explorative method along River Welang. Data recorded included geographical position, diameter and height of Syzygium and its morphological characters. A total of 23 individuals were obserbed belonging to four Syzygium species, i.e., S.semarangense, S. javanicum, S. pycnanthum, dan Syzygium sp.
Kerusakan Tegakan Akibat Pemanenan Kayu Konvensional dan Teknik Reduced Impact Logging di Hutan Alam Muhdi Muhdi; Diana Sofia
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.917

Abstract

The objective of this research was to determine the effect of reduced impact logging (RIL) to residual stand damages in natural tropical forest. This research examined the effects of reduced impact logging to residual stand damages in natural tropical forest of West Kalimantan. The effects of RIL to residual stands were studied using the data of three plots with each size of 100 x 100 m, which were placed based on random at landing, middle skiddtrail and tips of skiddtrail, respectively. The degree of residual stand damages based on tree population and stage of vegetation development in conventional logging and RIL was as follow: for poles and trees of 33.15% (moderate stand damage) and of 19.53% (light stand damage). Based on the size of injury of every individual tree, the degree of trees  damages caused by timber harvesting in conventional logging and RIL was as follow: trees heavy injury (64.66% and 57.20%), trees medium injury (20.30% and 24.00%) and trees light injury (15.03% and 18.80%). The most type stand damage were the falling dawn 36.84% and 32.01% and broken trees 22.78% and 21.25%. This research indicated that conventional logging in the tropical natural forest caused greater damage on residual stand when compared with a reduced impact logging. Based on the principles of sustainable forest management, the residual stand stocks in the forest was sufficient.
Bioekologi Udang Macrobrachium spp. di Sungai Banjaran Kabupaten Banyumas Kusbiyanto Kusbiyanto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.914

Abstract

Shrimp species diversity in River Banjaran is in a trend to reduce from time to time. In order to verify this trend, a research on bioecology of freshwater shrimp Macrobrachium spp. In River Banjaran was done using survey method. River’s body was divided into three different areas according to their environmental condition. On each area, six sampling stations were defined with the distance among stations were ± 0.5 km. The shrimps were collected using electroshocker, ancho, and waring. The samples were preserved in 70% ethanol and were identified. Only four species of shrimps were found during the survey, those are Macrobrachium cowlesi, M. idea, M. esculentum, and M. oenone.  Shrimp relative abundance among areas was similar with the highest relative abundance was found for M. cowlesi. Sex ratio analysis for all species showed that male individuals were more abundance than the female ones. This result provided a picture that species diversity of freshwater shrimps in River Banjaran is still in continuous decrease.  Therefore, it is necessary to make some efforts to conserve the rest of Machrobrachium species in Banjaran River.
The Effects of Nitrogen Fertilizer Dosages on Anatomical Characters of Ipomoea batatas L. Leaf Juwarno Juwarno; Sumarsono Sumarsono; Siti Samiyarsih
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 26, No 1 (2009)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2009.26.1.915

Abstract

The research was conducted in order to understand the effects of various nitrogen dosages on the anatomical characters of Ipomoea batatas leaf, and to find out the most influential dosage on the number and size of leaf anatomical characters. The characters observed consisted of thickness of cuticle, leaf, and palisade, as well as stoma size, and their density within mm2 of leaf surface. The method applied was experiments arranged in Completely Randomized Design. The results showed that all levels of nitrogen dosage affected the anatomical characters of sweet potato leaf while the most influential dosage was 200 kg urea per ha.
Komposisi dan Struktur Vegetasi di Resort Salak 2 Taman Nasional Gunung Halimun Salak (TNGHS) Rachma Fauziah; Priyanti Priyanti; Iwan Aminudin
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 35, No 3 (2018)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2018.35.3.516

Abstract

AbstrakResort Salak 2 Taman Nasional Gunung Halimun Salak (TNGHS) merupakan salah satu kawasan konservasi. Sebelum dijadikan kawasan Taman Nasional, Resort Salak 2 merupakan kawasan hutan lindung. Tujuan penelitian ini adalah untuk mengetahui komposisi dan struktur vegetasi Resort Salak 2 TNGHS. Penentuan titik pengambilan data dilakukan dengan systematic sampling with random start pada 800, 1000, 1200 dan 1400 m dpl. Analisis vegetasi menggunakan kombinasi antara metode jalur dan metode garis berpetak. Transek dibuat dua jalur dengan ukuran 20 m x 80 m. Vegetasi Resort Salak 2 memiliki 44 famili; 88 spesies; 1527 individu. Keanekaragaman spesies di Resort Salak 2 TNGHS sedang sebesar 2,3 pada tingkat semai dan tumbuhan bawah; 1,6 pada tingkat pancang; 1,82 pada tingkat tiang: 1,85 pada tingkat pohon. Kemerataan spesies yang tinggi sebesar 0,75 pada tingkat semai dan tumbuhan bawah; nilai kemerataan 0,69 dimiliki oleh tumbuhan pada tingkat pancang, tiang dan pohon. Pola pelapisan tajuk di hutan Resort Salak 2 dikelompokkan ke dalam empat stratum (A, B, C, dan D).
Struktur Komunitas Fitoplankton pada Kolong Pengendapan Limbah Tailing Bauksit di Senggarang, Tanjungpinang Tri Apriadi; Irvan Hasan Ashari
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 35, No 3 (2018)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (860.955 KB) | DOI: 10.20884/1.mib.2018.35.3.761

Abstract

Senggarang merupakan salah satu kelurahan di Kota Tanjungpinang yang memiliki kolam pengendapan limbah tailing bauksit. Fitoplankton merupakan salah satu organisme pionir pada ekosistem yang baru terbentuk. Berdasarkan hasil penelusuran, belum ditemukan penelitian mengenai komunitas fitoplankton pada kolam pengendapan limbah tailing bauksit. Pelitian ini bertujuan untuk mengetahui jenis, kelimpahan, serta indeks ekologi fitoplankton yang terdapat pada kolam pengendapan limbah tailing bauksit di Senggarang, Kota Tanjungpinang. Pengambilan sampel dilakukan pada empat stasiun: inlet, outlet, tengah, serta tepi perairan.Metode yang digunakan dalam pengambilan sampel fitoplankton adalah metode dinamis secara vertikal. Pencacahan fitoplankton menggunakan metode sensus. Hasil penelitian menunjukkan bahwa kelimpahan fitoplankton berkisar 1.692-2.525 sel/L. Tiga dari empat stasiun didominasi oleh divisi Charophyta, serta satu stasiun lainnya didominasi oleh divisi Chrysophyta. Dominasi divisi Charophyta dipengaruhi oleh tingginya kelimpahan genus Mougeotia sp. Bagian tengah kolong memiliki indeks ekologi yang lebih baik dari pada tepi perairan. Keanekaragam yang rendah pada semua stasiun menujukan kondisi perairan yang labil dan komunitas fitoplankton masih rentan terhadap gangguan. Hal ini sesuai dengan kategori kolong pengendapan limbah tailing bauksit di senggarang tergolong muda (< 5 tahun).

Page 26 of 35 | Total Record : 342

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