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Struktur Komunitas Cacing Tanah (Kelas Oligochaeta) di Kawasan Hutan Desa Mega Timur Kecamatan Sungai Ambawang
Get PDFCommunity structure can be reviewed from its species composition, species density, species evenness, species diversity, species dominance, and species biomass in an ecosystem. Earthworms have an important role in decomposition process of organic matters. The existence of earthworms can be considered as a bioindicator of soil productivity. A research about community structure of earthworms in Mega Timur Village forest area had been conducted in August 2016. This research aims to know the community structure of earthworms (class Oligochaeta) that are found in Mega Timur Village forest area as well as the condition of their habitat. Plot sampling was taken randomly with 5 plots whose size is 5x5m2 on every location. The sampling method used was quadrate method with size 30x30cm2, taking 5 spots on each location and hand-sorting method. Earthworms found in the site included three genera: Pheretima, Perionyx, and Pontoscolex. The highest composition of earthworms was found in Station I and III with two genera each, and the lowest composition was found in Station II with only one genus. Genus Pontoscolex had the highest density index, while genus Pheretima had the lowest index. The highest diversity index was observed in Station III (H’=0,64), while the lowest diversity index was on Station I (H’=0)
Jenis-Jenis Tumbuhan Talas (Araceae) di Kecamatan Rasau Jaya Kabupaten Kubu Raya
Get PDFThe research on the species of araceae plants in Rasau Jaya Subdistrict of Kubu Raya Regency was conducted from December 2015 until February 2016. Sampling was done by the cruise method that explored Rasau Jaya Subdistrict which was divided into 6 stations. Station 1 was located in the village of Rasau Jaya Satu, station 2 in the village of Rasau Jaya Dua, station 3 in the village of Rasau Jaya Tiga, station 4 in the village of RasauJaya Umum, Station 5 in the village of Bintang Mas and Station 6 located in the Village of Pematang Tujuh. This research aims to identify the species of Araceae plants in Rasau Jaya Subdistrict of Kubu Raya Regency. This research obtained as many as 12 species of Araceae plants with four varieties of the Caladium bicolor which include the 11 genera namely Alocasia, Caladium, Colocasia, Cyrtosperma, Dieffenbachia, Homalomena, Lasia, Pistia, Rhapidopora, Syngonium and Xanthosoma
Jenis Jenis Ikan Arus Deras di Hulu Sungai Mentuka Kecamatan Nanga Taman Kabupaten Sekadau
Get PDFHigh stream water fishes have unique body shapes as special adaptation pattern so that they are able to stick on the rocks and have attractive colors so that it has potential to be breed as animal fancy. The study aims to know the types of fishes that are found in the headwater of Mentuka River. This research used Purposive Random Sampling. The research had been conducted in three months from November 2016 to January 2017 in headwater of Mentuka River. In this research, seine fishing tools fishing net, landing net, and posat (traditional trawling tool) were used. The research findings reveal 3 families, which included Balitoridae, Cyprinidae, and Hemiramphidae. The species of Paracrossochilus vittatus from family Cyprinidae was found the most in the headwater of Mentuka River, and it is an endemic species in Borneo. The species from family Balitoridae that was found the most was Homaloptera stephensoni
Komposisi Rotifera di Muara Sungai Kakap Kecamatan Sungai Kakap Kabupaten Kubu Raya
Get PDFKakap River Estuary is a body of water in a direct contact with the sea and has a water salinity changes that affect the composition of Rotifera, is an estuarine ecosystem. The purpose of this study was to determine the species of Rotifera in the Kakap River Estuary. This study was conducted in May to August 2015. The sampling location was divided into seven stations, each station was divided into three sampling points, and each point of sampling was repeated three times. The research found 73 species of Rotifera belong to 14 genera (Anuraeopsis, Brachionus, Keratella, Beauchampiella, Euchlanis, Cephalodella, Colurella, Lepadella,Habrotrocha, Lecane, Philodina, Polyarthra, Trichocerca, and Testudinella). Lecane was the most common genera species found of all stations with a number of 33 species
Potensi Tumbuhan Pakan Dan Lokasi Tidur Kukang Kalimantan (Nycticebus menagensis) Di Desa Tenguwe Kabupaten Landak
Get PDFBornean slow loris (Nycticebus menagensis) are endemic to Borneo. Slow loris that live outside conservation area has high potential of disturbance, because lacking of protection. One habitat outside conservation area is Tenguwe Village, Air Besar Subdistrict, Landak Regency. This study aims to obtain information on plants and plant parts used by slow loris as a food source and a sleeping site. The research was conducted in March to April 2016. The methods used were semi-structured interviews and surveys of existence. Interviews were conducted to obtain information on the existence of slow loris, plant food resources and sleeping sites. The respondents interviewed were selected using a snowball sampling technique. The results of the interviews were followed up by conducting survey in the forest. Data were analyzed descriptively. The research obtained 32 species of 17 families of plants potentially as food and 4 species of 4 families of plants potentially as for sleeping sites. The results also show that slow loris at Tenguwe village are hunted for food, pets and sold. The slow loris found were two individuals in two different locations namely Sengabu and Bejawi
Morfometri Kepiting Bakau (Scylla spp.) di Kawasan Hutan Mangrove Muara Sungai Mutusan Kabupaten Sambas
Get PDFScylla spp. live in association with the mangrove forest. A damaged or loss of mangrove forest ecosystems will affect the mangrove crab population. This research aims to determine the types, morphometry and characteristics of mangrove crabs in the mangrove forest of Mutusan Estuary, Sambas Regency. The research was carried out from April to June 2015. The research obtained two species i.e., S. paramamosain and S. serrata. The species S. paramamosain has an average weight (W) of 138.13 g with an average carapace width (CW) of 95.42 mm, an average frontal margin width (FMW) of 27.97 mm and an average chela length (CL) of 57.45 mm. The species S. serrata has an average weight (W) of 212.82 g with a carapace width (CW) of 205.14 mm, an average frontal margin width (FMW) of 28.42 mm and an average length of chela (CL) of 67.11 mm. Based on the size of carapace width (CW), the Scyla spp. of young phase dominates the mangrove crab population in the mangrove forests of Mutusan Estuary, Sambas Regency
Pertumbuhan dan Karakter Anatomi Mimosa Air (Neptunia oleracea Lour.) pada Air yang Terpapar Logam Aluminium (Al)
Get PDFWater mimosa (Neptunia oleracea Lour.) is one kind of aquatic plant which is potential to have adaptive ability to heavy metal exposure in water. Among heavy metals that can contaminate water is aluminum originated from the use of aluminum sulfate [Al2(SO4)3], commonly known as alum for water clarifying. The research ran for 2 months, from January to March 2017. The research used Completely Randomized Design which consisted of six aluminium sulfate concentration treatments: control, 50, 75, 100, 125, and 150 ppm. The research findings showed that aluminum had influence on N. oleracea morphologically, which was marked by the leaves becoming yellowish and the roots becoming softer. Anatomically, seen from the slide of the root, the treatment using the highest concentration resulted in a shrinkage of stele area up to 69,43%. In the slide of the plant stem, the aerenchyma was more distantly spread, and from the slide of the leaf there was a color change of the tissue to be brown. Nevertheless, N. oleracea still could survive in water with aluminum concentration of 150 ppm
Inventarisasi Jenis Ikan Subkelas Elasmobranchii di Teluk Nuri Kecamatan Pulau Maya Kabupaten Kayong Utara
Get PDFLaju kepunahan Elasmobranchii semakin meningkat disebabkan aktivitas manusia dan tingginya permintaan pasar terhadap daging pari dan sirip hiu. Tujuan penelitian ini untuk mengetahui jenis – jenis Elasmobranchii yang terdapat di Teluk Nuri Kayong Utara. Metode yang digunakan yaitu metode survei dengan mengumpulkan semua jenis ikan pari dan hiu yang tertangkap oleh nelayan. Penelitian ini dilakukan pada bulan September sampai Oktober 2016. Berdasarkan hasil penelitian diperoleh 1 Famili Dasyatidae, terdiri dari 4 spesies pari yang ditemukan berupa Dasyatis zugei (pari kikir/toka-toka), Himantura uarnacoides (pari lumpur), Himantura walga (pari kikir/toka-toka), Pastinachus solocirostris (pari bendera). Berdasarkan data dan perhitungan jenis yang paling banyak ditemukan yaitu Dasyatis zugei sebanyak 19 individu. Himantura uarnacoides ditemukan sebanyak 3 individu dan termasuk dalam daftar IUCN dengan status terancam
Pertumbuhan Stek Batang Melati Putih (Jasminum sambac (L) W.Ait) setelah Direndam dengan Pupuk Organik Cair (POC) Tauge dan Bonggol Pisang
Get PDFWhite jasmine (Jasminum sambac (L) W.Ait) is a plant that has a high economic value. One of white jasmine propagation efforts is through vegetative propagation by stem cuttings. This research aims to determine the effect of liquid organic fertilizer (LOF) of bean sprouts and banana tuber on the growth of white jasmine cuttings. The research was conducted at the Laboratory of Biology and Green House of the Faculty of Mathematics and Natural Sciences, Tanjungpura University Pontianak. The analysis of soil and bean sprouts and banana tuber LOF was conducted at the Laboratory of Chemistry and Soil Fertility, Faculty of Agriculture, Tanjungpura University Pontianak. The analysis of metals was conducted at the National Standardization Agency. The research was conducted from November 2015 to February 2016. This research used a completely randomized design with 6 treatments and three repetitions. The treatments given were comparison of bean sprout LOF: banana tuber (Control, P1 (1:0), P2 (1:1), P3 (2:1), P4 (3:1), P5 (3:2). The results showed that there was a significant of giving bean sprouts and banana tuber LOF with a ratio of 3:2 on the number of leaves and root dry weight, while giving bean sprouts and banana tuber LOF did not significantly affect the root lenght, number of roots, fresh weight, dry weight, root fresh weight and the percentage of live cuttings
Potensi Ekstrak Gulma Daun Sembung Rambat (Mikania micrantha H.B.K) Sebagai Bioherbisida Pengendali Gulma Putri Malu (Mimosa Pudica L.)
Get PDFSensitive plant (Mimosa pudica) is one of weeds that may cause harm to cultivated plants, both in terms of quantity and quality of production. Climbing hempweed (Mikania micrantha) has alelokimia compounds in form of phenol, terpenoids and flavonoids that can be used as bioherbisida. This study was aimed to determine the concentration of Climbing hempweed leaf (M. micrantha) extract to inhibit the germination and growth of Sensitive Plant (M. pudica). This research was conducted in February to April 2016 in Biology Department Screenhouse, Faculty of Science and Mathematics and Wood Technology Laboratory, Faculty of Forestry, Tanjungpura University, Pontianak. The study used completely randomized design which was consisted of 5 treatments and 5 replicates, the total were 25 units of trial. The climbing weed extract used as control were 0.1; 0.3; 0.5 and 0.7 g/ ml. The results showed that the extract with a concentration of 0.5 g / ml could inhibit the germination percentage and length of sensitive plant (M. pudica). M. micrantha leaf extract at a concentration of 0.3 g / ml could inhibit the growth such as the height, root length, wet weight, and dry weight of sensitive plant