Jurnal Biologi UNAND
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Struktur Komunitas Alga Perifiton Sungai dalam Gua Batu Asahan di Sumpur Kudus Kabupaten Sijunjung Sumatera Barat
Get PDFThe cave ecosystem has a unique environment because it receives minimal sunlight and does not even get sunlight at all. Dark conditions in the cave will affect producers such as periphyton algae that live in rivers in caves that need sunlight for photosynthesis. This study aims to determine the periphyton community structure in the river in the Batu Asahan Cave in Sumpur Kudus, Sijunjung District, West Sumatra. This research held in August 2016. The research was carried out by survey method at 3 stations: bright, dim and dark zones. The results showed that periphyton were found as many as 22 species classified as Bacillariophycea 13 species, Cyanophyceae 5 species, Chlorophyceae and Euglenophyceae each of 2 species. Based on the number of individuals Bascillariophyceae 67.0%, Cyanophyceae 24.49%, Chlorophyceae 4.79% and Euglenophyceae 3.72%. Population density in each zone was low, ranges from 1.26 - 2.82 ind / cm2. The dominant species vary in each zone which is the highest shown by Synedra ulna (Bacillariophyceae) and Oscillatoria tenuis (Cyanophyceae). Diversity index ranging from 2.11-2.47 is not significantly different between zones, indicating the quality of clean water. The equitability index was high (E = 0.88-0.96) show the populations in the community evenly. Similarity index between zones was low (C = 25 - 56%). Fisicochemical factors of water indicate the quality of clean water supports the life of periphyton algae in the river
Paku Kawat Lycopodiella cernua (L.) Pic. Serm. (Lycopdiaceae-Lycopodiales) dari Provinsi Riau – Kajian Morfologi dan Sekuen DNA berdasarkan Primer RBCL
Get PDFMoss club (Lycopodiella cernua) is one of fern members distributed in Riau Province. The aimed of this study were to characterized the morphological characters and to analized its DNA sequence based on rbcl primer. Samples were collected from the field, documented and characterized the morphological charaters. DNA were isolated and amplified using PCR method and rbcl primer.  DNA sequnces were then analized using BLAST  Lycopodiella cernua collected from Riau Province was characterized by having creeping and erect rhizome that covered by microphyl, and terminal strobili. Rbcl fragmen of Lycopodiella cernua was sucssesfully amplified with 643 bp length. BLAST result confirmed the rbcl fragmen of this club moss
The Perifiton Alga Community in Masang Kecil River Receives Liquid Palm Oil Mill Waste in Kinali District, West Pasaman Regency
Get PDFThe study of the periphyton algae community in Masang Kecil River that received palm oil mill effluent in Kinali District, West Pasaman Regency was held from November 2017 to September 2018. This study aims to determine the composition and structure of periphyton communities in the Masang Kecil River in Kinali, West Pasaman. This study used purposive sampling method with a sampling location of 4 stations. Based on this study, 88 species of periphyton were classified as 3 classes i.e Bacillariophyceae (64 species), Chlorophyceae (15 species) and Cyanophyceae (9 species). The average density is 8.967 ind/ cm2. The highest relative density (KR) at stations 1,2 and 3 is Navicula lanceolata and station 4 is Fragilaria capucina. Species that are always found at each station (FK= 100%) are Fragilaria capucina, Navicula lanceolata and Synedra ulna. The diversity index in the Masang Kecil River is classified as medium (H’ = 2.87). Equitability index is evenly distributed (E= 0.64). Dominance index (C= 0.12) there is no dominant species. The similarity index is almost the same except between stations 1 and 3
Spatial Spread of Invasive Foreign Plants Clidemia hirta (L.) D. Don in Bung Hatta Forest Park, Padang, West Sumatra
Get PDFResearch on Spatial Spread of Invasive Foreign Plants Clidemia hirta in Bung Hatta Forest Park, Padang, West Sumatra, has been carried out from January to June 2018. The purpose of this study was to determine the spatial distribution pattern of invasive foreign plants Clidemia hirta and analyze the influence of distance from roads and influence light intensity on the distribution of the number of individuals Clidemia hirta in the Bung Hatta Forest Park. This study uses a belt transect method with a width of 2 meters along 250 meters. Along the transect, a plot of 2x2 meters was made with 125 plots. Observations made on Clidemia hirta is to calculate the number of individuals and measure the intensity of light in each plot. The results showed that the pattern of spread of  Clidemia hirta was grouped with the Morisita Index of 2.1. The distance from the road and the intensity of light does not affect the distribution of the number of individuals with R Square values of 0.022 and 0.007, respectively
In Vitro Response of Protocorm Grammatophyllum stapeliiflorum (Teijsm. & Binn.) J.J.Sm. Orchid in Growth on Several Media Composition
Get PDFFamily Orchidaceae has about 800 genera which are already difficult to find and almost extinct, including the orchid genus Grammatophyllum. A species of rare orchids, Grammatophyllum stapeliiflorum, is hard to find in original habitat. The addition of Growmore, BAP and 15% coconut water is expected to increase the growth and development of the G. stapeliiflorum orchid protocorms. This study use a Completely Randomized Design, consisting of 6 treatments (control, 1 and 3 mg/l BAP, 1 and 3 g/l Growmore, and 150 ml/l coconut water) in MS media with 5 replicates with observation for 4 weeks after planting. The results showed did not differ markedly in the number of protocorms, number of shoots and number of browning protocorms, but differ markedly in the parameter protocorm color based on DMRT test. Treatment of 3 mg/l BAP gives the best results on the number of shoots 2,60 protocorms and number of browning protocormss at the least amount 0,80 protocorms. The number of protocorms most widely on the treatment of 1 g/l Growmore 14,40 protocorms. Protocorms color is best found in 3 g/l Growmore with green color. This research managed to multiply the number of protocorms and induces protocorms shoots from Grammatophyllum stapeliiflorum orchid
Species Diversity of Earthworm in the Field of Biology Gadjah Mada University
Get PDFThe Earthworms are one of the invertebrate species which hasn’t backbone. The Earthworm has lived in a few habitats, for example in the humid of forest ground with the high density of cover canopy. Field of Biology UGM is an artificial forest and has a high density of cover canopy and this condition can supported the living habitat of earthworms. The aim of this research were investigated species diversity of earthworm in the field of Biology UGM.. Sampling method was carried out with purposive random sampling method. Result obtained that the earthworms in the field Biology of UGM consist of three species. The Three species were Pheretima hawayana, Pheretima sp., and Eudrilus eugeniae. Data analysis was used UPGMA method by 3.1 MVSP Program and obtained that generally, similarity percentage of P. hawayana, Pheretima sp., dan E. eugeniae interspecies more than 55 %. Whereas similarity percentage of P. hawayana and Pheretima sp. more than 85 %
Jaringan Sosial (Social Network) Antar Jantan Monyet Ekor Panjang (Macaca fascicularis) Di Gunung Meru, Padang, Sumatera Barat
Get PDFA study on social network based on grooming interactions among males of long-tailed macaques (Macaca fascicularis) at Gunung Meru, Padang has been conducted from August to October 2015. The dominance relationship determined by submissive interactions among 17 adult males. Submissive interactions were recorded using ad libitum observation and grooming interactions by continuous recording method. The results showed that the dominance hierarchy among males was linear (Matman linearity index: h' = 0.97). Alfa male appeared to have the highest centrality index among all the males. This study indicates that individuals attained higher dominance hierarchy tend to have higher degree of centrality
Karakter Morfologi dan Sitologi Bunga Pepaya Merah Delima
Get PDFThe papaya plant has three types of flowering, male flowers, female flowers, and perfect flower (hermaphrodite). The difference in interest affects the shape of the resulting fruit. This study aimed to characterize morphology and cytology of papaya flowers. The study was conducted in Tropical Fruit Research Institute at Solok and Laboratory of SPT at the Biology Department of the Faculty of Mathematics and Natural Sciences, Andalas University, Padang, West Sumatra. The research material uses papaya flowers Merah Delima variety from KP. Aripan Balitbu Troipka. The results showed the male flowers of male plants were smaller than the male flowers of the perfect plant. The difference of hermaphrodite flower of pentandria with hermaphrodite elongata flower, among others, the number of stamens, the length of the stem and the size of the ovary. Hermaphrodite pentandria has a number of stamens 5 while elongata has stamens 1
Induksi Embriogenesis Somatik Pada Anggrek Vanda Sumatrana Schltr. dengan Penambahan Beberapa Konsentrasi Asam 2,4-Diklorofenoksiasetat (2,4-D)
Get PDFThe research about induction of somatic embryogenesis of Orchid Vanda sumatrana Schltr. by giving 2,4-Diclorophenoxiacetic acid (2,4-D), was conducted from May to July 2016 in plant Physiology and tissue Culture Laboratory, Biology Departement, Matematics and Natural Science Faculty, Andalas University. The aim of this study was found the concentration of 2,4-D to induce somatic embryogenesis of Vanda sumatrana. The research used Completely Randomized Resign (CDR) with 6 treatments and 4 replication. The treatments were : without 2,4-D (control); 1 mg/L; 2 mg/L; 3 mg/L; 4 mg/L; 5 mg/L. The result showed that 2 mg/L 2,4-D and 3 mg/L 2,4-D were concentrations to induct somatic embryogenesis
Keanekaragaman Jenis Flora Epifit Di Hutan Kota Pekanbaru, Provinsi Riau dan Kajian Kekerabatannya
Get PDFThe city forest of Pekanbaru, Riau Province has many host trees for epiphytic flora. This study aimed to identify the epiphytic flora on tress of forest city Pekanbaru. Samples were collected from the field using exploration method. The morphological characters were scored and analysed to construct dendrogram using NTSyst 2. A total of 35 epiphytic floras were identified in this study, and consisted of mosses (12 species), ferns (21 species) and seed plants (2 species). Dendrogram showed that the examined species clustered based on the similarity of morphological character