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Khairijon '
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STRUKTUR KOMUNITAS MEIOFAUNA DI KAWASAN MANGROVE DESA TELUK UMA KABUPATEN KARIM Suryani '; Radith Mahatma; Khairijon '
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

Information on meiofauna community structure in Indonesian mangrove areas is stilllimited compared to its vast areas. This study aimed to assess the community structureand abundance of meiofauna on four stations in mangrove areas, located in Teluk UmaVillage, Karimun Regency. Samples were collected from four stations. Station 1, 2,and 3 are dominated by mangrove vegetation Rhizophora sp., Avicennia sp., Bruguierasp., consecutively while station 4 is located in an area without mangrove vegetation(Coral Sand). Meiofauna abundance was analyzed using one-way ANOVA and Fisher'stest. The result indicated that meiofauna which were found at the study site consisted of12 taxa namely, Nematodes, Copepods, Polychaeta, Turbellarian, Cumacea,Oligochaeta, Holothuroidea, Syncarida, Isopoda, Ostracoda, Cnidaria, and Tardigrada.The average abundance of meiofauna was 3.22 ind/10 cm 2 . It was also found thatNematodes was the most abundance taxa followed by Copepoda and Polychaeta at allstations. One-way ANOVA results revealed that the abundance of meiofauna in eachstation was significantly different (F=3.52 P<0.05).
KOMUNITAS MAKROZOOBENTOS DI SUNGAI BATANG LUBUH KECAMATAN RAMBAH KABUPATEN ROKAN HULU Aditya Apmayasari; Radith Mahatma; Khairijon &#039;
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

Batang Lubuh river has significant value to communities living close to the river. Generally, the people take some advantages from the river, such as for household activities (bath, washing and dumping the waste) and fishery. In addition, the river shed is such a beneficial for agriculture and mining. The use of macrozoobenthos as an indicator to identify the change of water quality was reported by some authors, but the information from Riau Province is scarce. The purpose or this research is to know the community structure or Macrozoobenthos at Batang Lubuh river, sub – district Rambah, Rokan Hulu Regency. Sampling was conducted using Eckman Grab 20 cm x 11 cm at 5 station along Batang Lubuh river of sub district Rambah, Rokan Hulu Regency. During this research we found two species of macrozoobenthos, Brotia costula family Thiaridae and Pila scutata family Ampullaridae. The abundance of macrozobenthos in study area was 408 ind/m2. Besides, we also found that Brotia costula as the dominant species. Regression analysis revealed that the correlation between physical and chemical factors such as temperature, brightness, depth, flow velocity, COD and phosphate on macrozoobentos was negative. In addition, DO and nitrate have a positive correlation to macrozoobenthos, while pH and turbidity have no correlation to macrozoobenthos.
PRODUKSI SERASAH BERDASARKAN ZONASI DI KAWASAN MANGROVE BANDAR BAKAU, DUMAI-RIAU Ruth Herlina Sitompul; Khairijon &#039;; Siti Fatonah
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

Mangrove is flora that grows in coastal area and it has high tolerance on salinity. Mangrove plays an important role in nutrient cycle because it produces nutrient for surrounding ecosystem. Riau province has wide mangrove forest located in Dumai city, Bandar Bakau. The aim of the research was to determine the amount of its litter production. There were three zones in this research, namely Upper Zone, Middle Zone and Lower Zone. A total of 10 litter traps (1x1 m2) were placed in each zone using a purposive sampling method. The litter was analyzed in the Laboratory Ecology of Biology Department. Results showed that highest total litter production for threemonths (1091.02 g/m2/month) was found in the Middle Zone. In March, litter production (619.62 g/m2/month) was higher than the others. The data showed that the litter production had a positive correlation with humidity and rainfall in the three zones. A significant value was found in the Lower Zone between litter production and salinity.
ANALISIS VEGETASI MANGROVE DI EKOSISTEM MANGROVE DESA TAPIAN NAULI I KECAMATAN TAPIAN NAULI KABUPATEN TAPANULI TENGAH PROVINSI SUMATERA UTARA Hotden P. Simamora; Khairijon &#039;; Mayta Novaliza Isda
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

Mangrove is vegetation that grows at the low tide area and the coastal region. A vegetation research analysis of mangrove had been done in Tapian Nauli I Village, Tapanuli, North Sumatra Province from April to May 2013. The aim of this study was to analyze the vegetation of mangrove forest. The method used in this study was a survey method, using a nested sampling. The parameters observed in this research were species compositions and important value index. The result showed that six mangrove species were identified. The highest density for seedling (26%) and for sapling stage (23%) were found at Avicennia marina, while for tree stage (30%)was found at Rhizophora apiculata. The highest dominance for seedling and sapling stage were found at Aveicennia marina and Rhizophora apiculata(24%), while for tree was found at Rhizophora apiculata (28%). The highest frequency for seedling (28,47% ) and sapling (27,47%) were found at R. marina while for tree stage was found at Rhizophora apiculata (28.46%). The highest importance value index at seedling (78,47%) and sapling stage (74,27%) were found at Aveicennia marina while for the tree stage was found at Rhizophora apiculata (86.46%).
POLA PERGERAKAN DAN WILAYAH JELAJAH GAJAH SUMATRA (Elephas maximus sumatranus) DENGAN MENGGUNAKAN GPS RADIO COLLAR DI SEBELAH UTARA TAMAN NASIONAL TESSO NILO, RIAU Erwanda Trio Bintan Sabri; Haris Gunawan; Khairijon &#039;
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

The Sumatran Elephant is one of the largest land mammal species that exist on the island of Sumatra which is currently critically endangered. The main threat for Sumatran elephant conservation is the fragmentations of its habitat which have been causing a conflict between elephants and humans. Tesso Nilo National Park is an area used as the original habitat of the Sumatran elephants which has now undergone encroachment. Conflicts between humans and elephants have become a much-talked-about issue and a factor which cause the depletion of population of the Sumatran elephant. This research aimed to determine the pattern of movement and the use of space by Sumatran elephants in the habitat that has experienced disturbance by human using GPS Collar and GIS technologies. The data of this research was acquired by attaching a GPS Collar on the leader of the elephant clan and processed using excel and arcGis program. This research was conducted from January 2013 to January 2014 in the northern part of Tesso Nilo National Park (TNTN). The results showed that the daily movement pattern of the elephant was random with an area of 56.631 ha and through several different land types. The elephant preferred a land type with more dense canopy and less disturbance.
KEANEKARAGAMAN BURUNG DI BERBAGAI TIPE HABITAT PADA EKOSISTEM RAWA GAMBUT YANG TERDEGRADASI DESA TANJUNG LEBAN AREA TRANSISI CAGAR BIOSFER GIAM SIAK KECIL BUKIT BATU, RIAU Abdi Nazirwan; Haris Gunawan; Khairijon &#039;
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

High degradation of peat land in the village of Tanjung Leban, Bengkalis was suspected to affect the bird  fauna in this  region. This study aimed  to determine species diversity and  abundance of birds in the village of Tanjung Leban on three types of habitat : burned land,  rubber, and oil palm plantations.  The study was conducted from March to May 2014.The combination of transects with point count and mist nets were used in this study. The diversity of bird in study area was analyzed usingShannon index diversity. A total of 39 bird species were observed, they were grouped into 26 families.  Columbidae and Pycnonotidae  were the  families  that havethe  highest  abundance compared with other families.  Shannon indexesfor the  diversityof  the birdwhich    observed in  threehabitats ranged  from 2.275 to 2.699. The  highest value of  Shannon index  was found in the rubber plantation habitat.
REGENERASI Rhizophora DI KAWASAN HUTAN MANGROVE DESA SUNGAI RAWA KECAMATAN SUNGAI APIT KABUPATEN SIAK PROPINSI RIAU Muhammad Hamid; Khairijon &#039;; Nery Sofiyanti
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

This study aimed to determine the regeneration of  Rhizophora on mangrove forest, Sungai Rawa  village, Sungai Apit  Sub-District, Riau Province.  This study had been carried out in February 2014.  The sampling were collected with  purposive sampling using nested plot. The size of plot for tree, pole, and sapling were 20x20 m, 5x5 m and 2x2 m, respectively. Three locations were selected for study sites, i.e. low, mid, and high activity locations. The result showed that only one  Rhizophora  spesies i.e  Rhizophora apiculata,that found in all of the locations with  300% Important Value Index for each growth stage.  R. apiculata  had good regeneration status. The highest density in each stage was found in the low activity location, with the  density value for  seedling, sapling and tree were 17000 individuals / ha, 1200  individual/ha and 318 individual / ha, respectively. While the lowest density was found in different study sites, i.e. high activity location for seedling (3600 individual/ha) and in the mid activity location for sapling (660 individual/ha) and trees (108 individual/ha).
KELIMPAHAN DAN KEANEKARAGAMAN MAKROZOOBENTOS DI BEBERAPA ANAK SUNGAI BATANG LUBUH KECAMATAN RAMBAH KABUPATEN ROKAN HULU Siti Rahayu; Radith Mahatma; Khairijon &#039;
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
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Abstract

This study was conducted to determine the diversityand abundance of macrozoobenthos in the water creeks of Batang Lubuh, Rambah District. The samples of macrozoobenthos had been taken from 5 stations using Eckman grab. Based on theresults, macrozoobenthos which were consisted of 9 species belongs to three classes ie. Gastropoda, Oligochaeta, andInsecta. The average abundance of macrozoobenthos ranged from 45 to1273 Ind/m2. Composition of macrozoobenthos was dominated by Gastropods (75,36%). The hishest abudance was obtained at station I (1408 ind/m2) and the lowest abudance was obtained at station II (45 ind/m2). The highest diversity Index (H’) of macrozoobenthos was found at Station I (1,971) and the lowest was found at Station II (0), mean while the highest dominance Index of macrozoobenthos was found at Station II (1) and the lowest was found at Station I (0.288). The analysis of water physical and chemical indicated thatthe correlation between diversity of macrozoobenthos and turbidity and also orthoposfat was negative, while the other parameters were positive.
POLA PERGERAKAN DAN WILAYAH JELAJAH GAJAH SUMATRA (Elephas maximus sumatranus Temminck, 1874) DENGAN MENGGUNAKAN GPS RADIO COLLAR DI KAWASAN TESSO NILO, RIAU Dwi Adhari Nugraha; Haris Gunawan; Khairijon &#039;
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

The Sumatran elephant is the largest land mammal species still left on the island of Sumatra and is currently critically endangered. One of the remaining habitats for Sumatran elephant in Sumatra is Tesso Nilo. Conversion of land around Tesso Nilo becomes a plantation and settlement causing conflicts between humans and elephants increased. This research was conducted from May 2013 to June 2014 around Tesso Nilo National Park (TNTN) to determine the patterns of movement and homerange of Sumatran elephants in habitats that have been interfered by human activities using GPSRadio Collar technology and GIS analysis. The data was processed with Excel and Arcgis Ver. 10.1 program. The results showed that the patterns of the daily movement of elephants was random with an homerange area of 22.362,27 ha and consisted of various types of land.
DISTRIBUSI DAN KELIMPAHAN SEMAIAN Rhizophora PADA ZONA INTERTIDAL DI EKOSISTEM MANGROVE DESA JAGO-JAGO KABUPATEN TAPANULI TENGAH Reynhard &#039;; Khairijon &#039;; Mayta Novaliza Isda
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
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Abstract

This research was conducted from April until May 2013, and aimed to identify and analyze the distribution and abundance of Rhizophora seedlings in the intertidal zone of mangrove ecosystem in Jago-jago Village. The observed parameters were distribution, abundance, and water and soil quality. The observation of seedling sample at front, middle, and back of the intertidal zone were systematically conducted using a transect method, where each transect consisted of four plots (4m x 4m in size). The result found two Rhizophora species, namely R. apiculata and R. mucronata that have grown in environments with ideal conditions of temperature, salinity, and pH. The highest abundance of Rhizophora seedlings (11406,25 ind/ha) was found in the middle of intertidal zone. The distribution of Rhizophora seedlings at Jago Jago Village according to morisita index is uniform (Ip< 0).
Co-Authors Abdi Nazirwan Aditya Apmayasari Dwi Adhari Nugraha Erwanda Trio Bintan Sabri Fadli &#039; Haris Gunawan Hotden P. Simamora Mayta Novaliza Isda Muhammad Hamid Nery Sofiyanti Purwoko, Agus Radith Mahatma Reynhard &#039; Ruth Herlina Sitompul Siti Rahayu Suryani &#039;