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MODEL PENGELOLAAN DAERAH ALIRAN SUNGAI TERPADU (SUB DAS TAPUNG KANAN) Harlon Sofyan; Thamrin Thamrin; Mubarak Mubarak
Jurnal Ilmu Lingkungan Vol 9, No 1 (2015): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.9.1.p.59-70

Abstract

This study was conducted from March to May 2014. Locations research was conductedin Koto Garo district of Kampar. This study aims to identify management problems thatexist in the sub-watershed Tapung Kanan and analyze problems and problem resolutionsub-watershed management Tapung Kanan using Logical Framework Analysis (LFA)models. Based on the results obtained as follows: (1). Sub-watershed managementissues in Tapung Kanan based inventory data obtained from the implementation offocus group discussion between the sub-watershed communities around Tapung Kanan,NGOs, Provincial Government of Riau and Riau University Environment Rona namely:a). The potential threat of flooding and pollution of the environment in Sub-watershedTapung Kanan, b). The high land conversion practices were not in accordance withtheir distribution as well as the practice of forest destruction, c). The potential conflictsof management of natural resources is not optimal due to spatial synchronizationacross districts, d). The limited attention and public participation in environmentalconservation around the sub watershed Tapung Kanan, e). Not optimal performance forthe designated institutional sub-watershed management Tapung Kanan. (2). TapungKanan sub watershed management in an integrated manner using a model of LFA canmap problems and problem resolution. So that management can be realized gradually,then setting goals, objectives and strategies should be drawn up so that the next can bederived in the policies, programs, activities and location implemented. The resultingmanagement objectives in this study is "Realizing the Tapung Kanan sub watershed asone buffer region Ecosystem in Riau Province ".
Analysis of coastal vulnerability of Rangsang Island due to climate changes Ahmad Nurhuda; M Mubarak; Sigit Sutikno
Journal of Degraded and Mining Lands Management Vol 6, No 4 (2019)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2019.064.1907

Abstract

Rangsang Island is home to more than 48,000 residents. Climate change has been a critical issue to the Island and threatened the existence of the inhabitants. This study is proposed to identify the zone of the coastal area of Rangsang Island which is vulnerable to climate change. By mapping coastal vulnerability index (CVI) of the island, it is expected to be a reference of local government in planning their spatial management. The method of this study was by a direct survey for collecting data of geomorphology, beach elevation, sea level rise, tidal fluctuation, significant wave height, and changes in the coastline. To determine CVI, each parameter is divided into 5 categories and given a value level: 1 for very not vulnerable, 2 for not vulnerable, 3 for moderate, 4 for vulnerable, and 5 for very vulnerable. The results show that most villages on the island are classified as highly vulnerable to climate change, namely 9 villages. Even 2 villages are threatened very high risk because the village has CVI more than 12.5. Only 6 villages whose territory has moderate vulnerability index. Vulnerability level of coastal Rangsang Island is strongly influenced by geomorphological variable and coastal elevation. In addition, the variable coastline changes and sea level rise also contributed to the vulnerability index of the Island. 
Spirulina platensis GROWTH IN POLLUTED DOMESTIC WASTE WATER MEDIUM AND ITS UTILIZATION AS A RAW MATERIAL FOR BIOGAS PRODUCTION Rugun Sinaga; Irwan Effendi; Mubarak Mubarak; Hanies Ambarsari
Asian Journal of Aquatic Sciences Vol 3 No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.1.38-48

Abstract

This research was conducted in April - June 2019, located at the Center for Environmental Technology Laboratory (PTL) - Agency for the Assessment and Application of Technology (BPPT), Building 820 Geostech, Puspitek Serpong, South Tangerang. The purpose of this study was to determine the biogas production from S. platensis microalgae grown in polluted domestic waste media from Muara Angke waters with different concentrations. The method used in this study is an experimental method with a Completely Randomized Design (CRD) with 3 different treatments of S. platensis concentrations consisting of 5% v/v, 15% v/v and 25% v/v performed three repetitions with the addition cow manure substrate and control without the addition of cow manure substrate. The parameters observed were physical parameters, chemical parameters, biomass calculations and biogas volume measurements. Data were analyzed and tested statistically using Analysis Of Variance (ANOVA) and further tested using the LSD test to compare between treatments with a 95% confidence level. Biogas is energy that can be used as an alternative fuel to replace fossil fuels such as petroleum and natural gas. The results showed that S. platensis with the addition of cow dung could produce more biogas volume (4453.6 cm) than S. platensis without the addition of cow dung (697.19 cm). Biogas volume is measured using the gas holder method.
COASTAL VULNERABILITY ANALYSIS IN PADANG PARIAMAN REGENCY, WEST SUMATERA Fauzi; Mubarak Mubarak; Elizal elizal
Asian Journal of Aquatic Sciences Vol 3 No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.1.69-76

Abstract

This research was conducted in June to July 2019. It aimed to analyze the vulnerability and the shoreline change of coastal area of Padang Pariaman Regency, West Sumatera Province. Survey methods with direct field observations were applied and different satellite imageries were also used to find out the shoreline change of coast under study. The results showed that there five categories of changes, namely high and low accretion (>2.1 m yr-1; 1 - 2 m yr-1); stable condition (-1 to 1 m yr-1); and high and low erosion (<-2 m yr-1; -1 to -2 m yr-1). Furthermore, the percentages of coastal vulnerability of the areas under study can be classified into five categories such as Very Low Condition (17.27 %), Low Condition (39.68 %), Medium Condition (29.02 %), High Condition (8.88 %), and Very High Condition (5,75 %). In addition, the districts of Sungai Limau and Batang Gasan had very high vulnerability conditions.
ANALISIS ARUS DAN SEBARAN SEDIMEN TERSUSPENSI DAMPAK TAMBANG TIMAH DI LAUT (KASUS PERAIRAN PULAU RANGSANG KABUPATEN KEPULAUAN MERANTI) Mubarak Mubarak; Edison Edison; Sri Fitria R
Jurnal Ilmu Lingkungan Vol 8, No 1 (2014): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.8.1.p.72-78

Abstract

Utilization of marine natural resources at this current becoming one of the option thatis used by several Indonesian regions as motors of regional development. One of thenatural resources potential is tin mining. Tin mining over the ocean not only provideseconomic value, but also resulting negative impacts on marine waters. The alleged ofnegative impact is the increasing of suspended sediment in the waters due to leaching ofmining activities on the ship. Current circulation patterns that generated by tidal ofPulau Rangsang waters Regency of Meranti Islands, when the tide to ebb is heading tothe Southward and when the ebb to tide is heading to northward. The resultant ofcurrents circulation tend to align with the mainland of Pulau Topang. Suspendedsediment transport generated by ocean currents, showing the distribution of thesuspended sediment concentration of 0.08 kg/m3 or 80 ppm spreads about 2 km fromthe material source.
ANALYSIS OF YELLOWFIN TUNA (Thunnus albacares) FISHING GROUND BASED ON SEA SURFACE TEMPERATURE AND CHLOROPHYLL-A IN THE WEST SUMATERA WATERS Ridwan Habibullah; Mubarak; Musrifin Galib
Asian Journal of Aquatic Sciences Vol 3 No 3 (2020): Desember 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.3.236-247

Abstract

This research was conducted on September 2019 in west Sumatera waters which was aimed to find out the level of aquatic productivity, to analyze the yellowfin tuna fishing ground and to find out the corelation between sea surface temperature (SST) and chlorophyll-a with the total catch of yellowfin tuna. In conducting the research, survey and spatial analyze were used as the method. The highest total catch of yellowfin tuna was on October 2019 with the total 60.610 kg and the CPUE 166 kg/trip. On the other hand, the lowest total catch was on June with the total 18.080 kg and CPUE 92,7179 kg/trip. Based on the result of the CPUE, October is the best month for fishing. The correlation coefficient between SST and total catch in 2018 was -0.69 which mean there was a negative correlation. Meanwhile, the correlation chlorophyll-a with the total catch was 0.65 which mean the corelation between both variables were not good
Sediment Movements in Estuary of Siak River, Riau Basin, Indonesia Mubarak Mubarak; Ahmad Nurhuda
Indonesian Journal of Geography Vol 53, No 1 (2021): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.57100

Abstract

Siak river has a long history as a transportation lane in the east of Sumatera. From traditional to timber transportations are dependent on this river. Now the river is a severe suffering pollutant spill from many sources. Anthropological activities were higher contributions in the degradation of river environments. Many works were reported about pollution in Siak river. But how the distribution of model sediment transport in the mouth of the river is less to be explained. We consider hydrodynamics model of the mouth of Siak river for modeling the sediment distribution. This simulation gives a fundamental and clear understanding of how total solid sediment (TSS) distribution when flood and ebb tide happens. At ebb tide, TSS dispersion is higher than at flood tide. There is found that the sediment is concentrated in the plume of Siak river in Bengkalis strait. The composition of the sediment is dominated by organic matters.
Analisis Kerentanan Pesisir di Kabupaten Pesisir Selatan Provinsi Sumatera Barat Yoga Novriadi; Mubarak Mubarak; Elizal Elizal
Ilmu Perairan (Aquatic Science) Vol 10, No 1 (2022): Maret 2022
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jipas.10.1.p.9-14

Abstract

Penelitian dilakukan di Kabupaten Pesisir Selatan Provinsi Sumatera barat pada bulan Oktober – November 2019. Tujuan  dari penelitian ini adalah untuk mengetahui perubahan garis pantai dan tingkat kerentanan pesisir. Data primer diperoleh dari pengamatan lapangan dan data sekunder dari sumber terkait. Hasil penelitian menunjukkan wilayah ini mengalami akresi yang berkisar (1->2,1m/th) dan erosi (-1-<-2 m/th). Indeks kerentanan pesisir umumnya sangat rendah, namun di beberapa titik mengalami kerentanan sangat tinggi karena sangat terpapar terhadap gelombang dan adanya aktivitas antropogenik yang tinggi, sehingga mengakibatkan terjadinya erosi hingga 65% selama 10 tahun terakhir
MANGROVE FOREST EFFECT ON THE COASTLINE IN RANGSANG ISLAND RIAU PROVINCE Paulinus; Mubarak Mubarak; Efriyeldi efriyeldi
Asian Journal of Aquatic Sciences Vol 3 No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.1.29-37

Abstract

The study was conducted in May-June 2019 on Rangsang Island. This study aims to determine the effect of mangrove forests on coastline found on the island of Rangsang in Riau Province. The sampling location was determined by purposive sampling, namely 3 station points, namely Segomeng Village, Tanjung Kedabu Village, and Sungai Gayung Kiri Village. Landsat image data analyzed at the Oceanographic Physics Laboratory of the Department of Marine Sciences, Faculty of Fisheries and Maritime Affairs, University of Riau. To find out the area of ​​mangroves using Landsad 5 TM satellite imagery and Landsat 8 OLI Tirs imagery and analyzed using Er Mapper Software, Envi 4.5 and Arcgis 10.3. Calculation of the structure of the mangrove community is carried out using the line plot plot method. The results of the analysis of the vast landsat image of mangroves in the coastal areas of Rangsang Island in 1997, 2002, 2007, 2013, 2019 were respectively 11,093 ha, 10,807 ha, 10,393 ha, 10,121 ha and 9,971 ha. Changes in the coastline indicate the occurrence of abrasion and accretion, where the highest abrasion occurs at station three with an average of -7.6 m/year and accretion occurs at station one with an average of 2.68 m / year. Mangrove density at station one is 2266.7 ind / ha and at station two that is 1466.7 ind / ha. Mangrove species found were Rhizophora apiculata, Rhizophora mucronata, Avicennia alba, Sonneratia ovata, Bruguiera gymnorrhiza, and Xylocarpus granatum.
Sea Surface Temperature (SST) and Rainfall Trends in the Singapore Strait from 2002 to 2019 Mubarak Mubarak; Rifardi Rifardi; Ahmad Nurhuda; Romi Fadli Syahputra; Sri Fitria Retnawaty
Indonesian Journal of Geography Vol 54, No 1 (2022): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.68738

Abstract

Studying Singapore Strait waters condition as a form of maritime mitigation is necessary because it is an international shipping lane. The dominant weather changes include rainfall, wind flows, and sea surface temperature (SST). This study aims to reveal the relationship between rainfall and SST activity in the Singapore Strait for over 18 years, from 2002 to 2019. The results showed a negative correlation, where the SST decreases as rainfall increases and vice versa. In addition, the high rainfall and low SST distribution occur in the Western season (December–February). The low rainfall intensity and high (warm) SST distribution occur yearly in the transition from West to East (March–August). Also, the distribution pattern is influenced by rainfall intensity and the water mass from the South China Sea and the Malacca Strait, where the strait is a mixture of these masses. The neural network model confirmed the negative correlation. Hence a small change in SST causes rainfall if it is cooler, and less precipitation if warmer.