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The study aims to identify variations in the surface temperature of the water of dumai, Riau province, using the AQUA-Modis satellite. Data analysis uses seadas and surfer software. In this study, the method used was the survey method. Ground check done was to establish the immediate value of ocean surface temperature. It also measures the quality of the water and gives documented observations of the waters. Parameters measured in this study are those of the quality of the water covering: brightness, temperature, acidity (pH), and salinity. The measured parameters for the quality of water in the dumai waters were carried out at 3 stations that are thought to represent the parameters of the waters of the city of dumai. The result of the measured parameters for the quality of the dumai waters is known that for the value of the brightness of the dumai waters is between 7.5 and 16 cm, the water temperature is between 28-29 oC, the degree of acidity (pH) of water ranges between 6-7 and dumai water salinity (26-32‰). Based on studies that 2020 variations in surface temperature (SST) have a varying range of temperatures. Variations in surface temperature are marked by SST anomalies indicating that the value of negative anomalies indicates that an SST shift is marked by a drop in temperature

The study aims to know the area of fishing in the waters of the Strait based on a flat-out chlorophyll-a satellite image of AQUA-Modis. Data analysis uses Seadas 7.5.1 and Surfer 13. In this study the method used was the survey method. Ground checks are done aimed at directly knowing the water quality parameters. And also there is a documented documentary on the waters. Parameters measured in this study are those of the quality of the water covering: brightness, temperature, the velocity of the current, acidity (pH) and salinity. The measured parameters for the quality of water in the Dumai Waters were carried out at 3 stations that are thought to represent the parameters of the waters in Dumai. The result of the measured parameters for the quality of the Dumai Waters is known that for the value of the brightness of the Dumai waters is between 7.5 to 16 cm, the water temperature is between 28-29oC, the degree of acidity (pH) of water ranges between 6-7 and the salinity of the water is 26-32 0/00.The chlorophyil-a concentration in the Dumai waters based on analysis of the AQUA-Modis satellite image ranging from 4.001 to 11200 mg/m3. The level of fishing area in the Dumai Waters is 75%.

The role of housewives (Mitra Pengcinta Alam Bahari/PAB) contributes to the production of organic waste from cooking activities in the kitchen. For example, organic waste from vegetable residues, fruit (such as fruit peels, hard vegetable stems and leaves) and food waste. The problems faced are: the unknown technique of making eco-enzyme products to reduce pollution of environmentally friendly organic waste. One of the organic waste management techniques is the use of eco-enzyme products. The purpose of the activity is to increase the production capacity of eco-enzyme to be able to reduce organic waste pollution and to increase the entrepreneurial spirit of PAB partners to produce eco-enzyme products. The methods used are lectures, discussions and the practice of making eco-enzymes involving 20 PAB members. The results of the activity showed that PAB members were very supportive and motivated, as many as 53.0% (Strongly Agree), 42.4.0% (Agree) and 4.50% (Neutral) were willing to practice environmentally friendly eco-enzyme product utilization techniques. The results of the economic analysis of the production of 5 bottles/day of eco-enzyme products (@ Rp. 30.000,-) will generate a profit of Rp. 2,958,720/month. This provides added value for people's income and efforts to manage organic waste.

This research was conducted in August 2020 in the Dumai River Estuary, West Dumai District, Dumai City, Riau Province. The purpose of this study was to determine the brightness of the waters and its distribution in the waters of the Dumai River estuary. The research method used is a survey method with the determination of the sampling point using purposive sampling method at tide towards low tide and low tide towards the tide. The map is heavy using ArcMap 10.4 software and interpolated using IDW (Spatial Analyst) tools. The results showed the brightness at tide to low tide, which is around 23.5-129 cm with an average brightness of 84.3 cm. Brightness at at low tide to high tide is around 35-127.5 cm with an average brightness of 88.15 cm. Based on the map, the brightness of the waters of the Dumai River Estuary is low at the mouth of the estuary and high in the part that leads to the sea

There are many mining sites found around Kampar watershed, specifically in Tambang sub-district. These mining site are scattered in villages, such as Palung Raya village. This research is conducted to analyze the influence of mining to water quality, rate of land erosion, pollutant load, assimilation capacity, social condition and community economy and mining area management. Survey method and quantitative descriptive approach are chosen to collect data from represented population, which are water, soil and the community around mining site. Insitu parameters are temperature, pH, DHL, DO, and exsitu parameters are TDS, TTS, Fe, texture, soil permeability and plankton. Mining activities have yet to influence water quality, but there’s a fluctuation in physical and chemical parameters, and the average of measurement is under the quality standard of PP Number 82 Year 2001, analog with plankton biology parameter, moderate diversity, no show of dominant type and balanced uniformity. The rate of erosion on slope of 0-8 % is 16,1 ton/ha/year with TBES, and on slope of 8-15% is 72,7 ton/ha/year with TBESB. The value of TDS and TSS for assimilation capacity is over the pollutant load from pollutant source. Mining activity has yet to influence the social economy condition of the community around mining sites. It’s because of the owner and employees are from the outside of the community. Water quality management of Kampar tributary is conducted based on the analysis of influence from mining to water quality, rate of erosion, pollutant load, assimilation capacity and social and economy condition around the mining sites.

The article aims to analyze the forms of role of community in the efforts to support the attainment of Sustainable Development Goals Village of clean water and sanitation. The study used perspective review over community participation by Keith Davis to take an approach over the problem. The data were collected through documentation and filling in the questionnaires by 158 households of Talontam village. The data were analyzed by using quantitative descriptive approach. The result of the study showed that to attain the sixth of Sustainable Development Goals village community who did not have access to clean water and sanitation participated in the forms of labor, idea, goods, and money that were executed in a form of saving money to build shallow borehole, hand-washing facilities, standard enclosed septic tanks and sanitations; building rainwater tanks; purchasing water filter; relocating septic tank; reusing used containers for hand washing; and participating in health counseling. The community group made efforts to maintain the sustainability of access to clean water and sanitation in the forms of conserving water and infrastructure maintenance, also preserve river area.

In 2019 there were 9 (nine) managers of drinking water from Sikumbang Springs. The management of the Sikumbang Spring water supply business is still carried out individually and traditionally means that the management carried out by the Sikumbang Spring entrepreneur is only limited to exploitation. Management does not include environmental preservation. The purpose of this study was to determine the potential and determine the sustainable management strategy of Sikumbang Springs in Pulau Sarak Village, Kampar District, Kampar Regency. The benefit gained from this research is the balance between environmental, economic and social aspects in managing Sikumbang Spring. and the community as water users / entrepreneurs get information on the potential of Sikumbang Springs in Pulau Sarak Village. Analysis of the projected population of each village in the Kampar subdistrict above can be calculated the number of residents who use clean water. The more accurate results of the largest population is at the end of the planned year, namely in 2029 with a total population of 50.732 people (10-year projection). The potential of Sikumbang Spring based on the value of its debit from March to December 2020 is 247.127.040 liters. The need for clean water for household needs (drinking and cooking water) in Kampar sub-district is 6,3 ((liters / day) / soul), so that the community's water demand in Kampar sub-district in 2019 is 310.697 liters / day. The average daily debit of Sikumbang Springs is 808.272 liters / day. The calculation of the average daily debit of Sikumbang Spring shows that the debit value of Sikumbang Spring exceeds the value of its needs. Therefore, Sikumbang Springs in the study area can be used as an alternative in meeting the water needs of the local community and communities outside Pulau Sarak Village. Based on the results of the SWOT analysis of the management of the Sikumbang Spring, the strategy that can be applied is an aggressive (development) strategy that is maximizing strengths and taking advantage of available opportunities, so as to minimize weaknesses and avoid threats. Sikumbang Spring management must optimize the main function of Sikumbang Spring as a source of clean water in meeting household water needs and improving its marketing system. The role of the community in maintaining and preserving the source of the Sikumbang Spring also needs to be enhanced.

This study aimed to analyze the pattern of sediment transport to the distribution of plankton and fishing ground in the estuary of KamparRiver. This study used survey methods, the study sample was obtained in the field are considered to represent the Kampar River estuary. Then the sampling results in the form of TSS, brightness, temperature, salinity, pH, flow velocity and plankton descriptively analyzed and discussed with reference to data interpretation method by using mathematical models (software mike21 ). The results showed the concentration distribution of sediment at the mouth of the Kampar River in east monsoon amounted to 8.76 million tons / day and in the west monsoon amounted to 7.64 million tons / day. A region prone to silting due to sediment transport is periodically southeastern portion Mendol. Based on the analysis modeling , plankton diversity index tends to be low in the study site so that the waters around the Mendol island excluding strategic area for fishing grounds it is indicated there has been a downward trend in plankton diversity index as the primary productivity . The existence of TSS may hinder the penetration of light that ultimately affect the photosynthetic plankton.

The objectives of this study are to identify the pollutant sources location, analyze pollution load and pollution load carrying capacity of BOD (Biologycal Oxygen Demand), COD (Chemical Oxygen Demand) and TSS (Total Suspended Solid) concentrations; The QUAL2Kw methods application for modeling process of the main river were divided into nine reach, where Sibayang River (kilometre 86,629) as the headwater and Mentulik village as the downstream boundaries (km 0). The water samples where selected at ten points, with five of them are located at the main river and the rest of five at the tributaries. The modeling used water quality data on pollutant sources as input and the main river water quality data as a comparison.Based on the results of the study, total pollution load of BOD are 4,83 Tons/hour and total pollution load carrying capacity of BOD are 2,65 Tons/hour, it means a pollution load carrying capacity for BOD has been exceeded for 2,18 Tons/hour. The total pollution load of COD are 8,16 Tons/hour and total pollution load carrying capacity of COD are 8,45 Tons/hour, it means a pollution load carrying capacity for COD has not been exceeded and the main river still capable to recieve the pollution load of COD for 0,29 Tons/hour. Total pollution load of TSS are 55,90 Tons/hour and total pollution load carrying capacity of TSS are 12,45 Tons/hour, it means a pollution load carrying capacity for TSS has been exceeded for 43,45 Tons/hour. Generally total pollution load carrying capacity of BOD and TSS has been exceeded, and a total pollution load carrying capacity for COD has not been exceeded, nevertheless if review is based on river reach, an excessing of BOD pollution load has been occurred at km 18 - 1 for 1, 37 Tons/hour, COD pollution load for 2, 38 Tons/hour at km 45 - 40 and TSS pollution load for 32, 54 Tons/hour in the Teso River

This research was conducted in March 2020 with the aim of evaluating the heavy metal content of Pb and Cu in sediment and blood cockle (Anadara granosa). The sediment and blood cockle samples were taken from Panipahan coastal waters, Panipahan Village and Teluk Pulai Village, Rokan Hilir Regency, Riau Province. The results of this study showed that the highest content of Pb and Cu in sediments was found in the surrounding area of residential areas (47.4570 µg / g and 104.1320 µg / g), while in blood cockle, the highest content was found around areas far from anthropogenic activity. The Pb content in the sediments did not show a significant effect on the Pb content in blood cockles, as well as the Cu. The results of the calculation of the MPI (Metal Pollution Index) value showed that Panipahan coastal waters are still classified as low pollution level.

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.

Along the coast Keluruhan Pelintung has been an abrasion of 1.33-16.84 metres/year. This activity aims to increase the capacity of community awareness of coastal damage mitigation through counseling on abrasion prevention and green belt implementation techniques. The methods used were lectures, discussions, and classroom and field practice, followed by 28 community representatives. The results of the activity showed a significant increase in community's understanding of simple methods to prevent coastal damage which had a positive impact on ecology (coastal resilience) and the economy (alternative income). The method of planting mangroves on abrasive beaches is due to the influence of currents and waves and processing of mangrove fruit to produce syrup, diamonds and mangrove dodol (mangrove). The results of the economic analysis show that the pedada syrup (1 bottle @ Rp. 25,000) generates a profit of Rp. 3,192,000/month, wajik pedada (1 pack Rp. 10,000) Rp. 1,476,000/month, and dodol pedada (1 pack of Rp. 15,000) Rp. 2,760,000/month. The majority of the community stated that they supported and enthusiastically held this activity, namely 49.7% (Strongly Agree), 37.8% (Agree), 11.80% (Neutral) could accept and practice increasing community awareness of mitigating coastal damage by making mangrove planting efforts and diversification of processed mangrove products.

This research was conducted in March 2019 in the waters of Bagan Tanjungbalai Village Asahan Regency North Sumatera Province. The purpose of the study were to analyze the community structure and distribution of benthic foraminifera. Determination of the research was purposive sampling of 4 station with 3 sampling points where the distance each sampling point was 50 meters wich were based on the initial sampling point. In the study area were found 24 species of foraminifera. The study showed that composition of sediment organic matter involved 4.97 - 15.26%, while the abundance of benthic foraminifera was between 13690 - 28571 ind/m2. Defferences of the abundance of benthic foraminifera at each station obtained a significant value of 0.01 or p < 0.05, which means a difference the abundance of benthic foraminifera beetwen stations,but not significant. While the relative abundance between sampling is only 0.15-21.00%, while the relative sedimentation rate between sampling is 15.38 - 33.02%.

The purpose of this study is to determine the rate of shoreline change and the level of abrasion in Bukit Batu District, Bengkalis Regency, Riau Province based on several physical variables in the coastal area. End Point Rate (EPR) is a method that can be used to calculate the rate of shoreline change by displaying transects according to their category (high abrasion, medium abrasion, low abrasion, stable, and accretion). From 1991-2021 there was an abrasion of ±139.71 meters equivalent to ±4.65 m/year which mostly occurred in Sukajadi Village and Pangkalan Jambi Village, while accretion of ±27.51 meters equivalent to ±1.58 m/year mostly occurred in Pakning Asal Village and Sejangat Village. Moderate abrasion is the predominant type. Sukajadi and Pangkalan Jambi are villages that have experienced high levels of abrasion. The area affected by abrasion has moderate and fast currents as well as coastal protection in the form of mangroves, most of which have been damaged and require repairs. Therefore, the main factors causing the abrasion are thought to be the lack of coastal protection and high-speed currents and waves flowing from the Malacca Strait.

The Rupat Strait, a part of the Malacca Strait, is recognized as semi-closed waters and shows a high activity; thus, discovering the transport sediment mechanism of the strait as a consequence of ambient and anthropogenic forces is essential. Hydrodynamic and sediment transport modelling was constructed using the 2-Dimensional Explicit method which is averaged over depth. The results show that the dispersion of sediment at high tide is longer than that at low tide. This follows the hydrodynamic model in which current velocity at high tide is greater than the ocean current at the low tide. The previous sediment observation supports the results of transport sediment modelling, indicating that the anthropogenic factors are highly associated with the sedimentation in the Rupat strait

This research was conducted in February 2021 at Sasak Beach, West Pasaman Regency, West Sumatra Province, aiming and the benefit of this study is to examine the suitability of beach tourism in Sasak Beach based on biophysical aspects, including the precept of the community to ecotourism activities in Sasak Beach, as well as analyze the supporting factors of its activities. The method used in the study is a method of surveying directly to the research site and measuring the necessary data qualitatively and quantitatively The goal is to get information about Sasak Beach and the perspective of tourists on the development of marine ecotourism at the research site. Sasak Beach has a specific feature with the planting program of a thousand pine trees. This beach has great potential and opportunities to be developed as a beach tourism area The highest conformity values are found in station I, and the lowest are in stations II and III. This value makes Sasak Beach can be used as a marine ecotourism

This research was conducted in February 2021 at the mouth of the Dumai River, Rupat Strait. The purpose of this study was to determine the effect of sediment supply from land on changes in bathymetry in the waters of the Rupat Strait based on the analysis of suspended sediment (SSC) and suspended solids (TSS) divided by the area of the study. The method used is a survey method. The results showed that as much as 26,94 tons/year of sediment entered the Rupat Strait and was distributed in the research area. Each part of the research area has a different bathymetric change value. This is presumably due to oceanographic factors in the waters of the Rupat Strait such as strong and weak river currents when entering the sea, the distance between the research area and the sediment supply source, human activities in each part of the study area, erosion along the river and abrasion at the river mouth. the presence of mangrove forests, dominant sediment types, sloping water topography, the cross-sectional width of the river as a sediment supplier, and suspended solids

This research was conducted in Dumai sea western waters, Riau Province. Dumai marine waters are part of the territorial waters of Riau that relate directly to the Strait of Malacca, and are at Rupat Strait region, and has a high accessibility of the region, both locally and internationally. Dumai waters is also an estuary waters affected by the activities of the land, and the waters that receive input from various types of waste from various activities in Dumai city and surrounding areas. The research was aimed to knowing the general condition of the Dumai sea western waters, analyzing the content of Pb and Cd in sediments, observing the correlation between organic matter and heavy metal of Pb and Cd, and find out the status of pollution Dumai Sea Western Waters by comparing the results of the analysis with some quality standard countries, The method used is a survey method. Based on the Decree of The Minister of Environment No. 51 of 2004, that the general condition of the Dumai sea western waters still can support the life activities of marine organisms in the waters. The results showed that the concentrations of Pb and Cd in sediments of Dumai is below the threshold value. The results of simple linear regression analysis of heavy metals Pb and Cd with organic matter content showed that the concentration of heavy metals Pb and Cd is not influenced by organic matter content or have a very weak correlation with linear regression equation consecutive y = 0,0834x + 7,7866 and y = -0,001x + 0,0559. The status of pollution of Dumai sea western waters for Pb 8,76 µg/g and Cd 0,04 µg/g still under quality standards Keywords: Dumai Sea Western Waters, Sediments, Heavy Metal Pb and Cd

Ruang Terbuka Hijau (RTH) merupakan ruang dengan vegetasi yang berfungsi sebagai penyerap gas karbondioksida (CO 2 ) dalam bentuk karbon tersimpan sehingga dapat tercapai suatu kualitas lingkungan udara kota yang bersih dan nyaman. Penelitian ini bertujuan untuk menganalisis status dan faktor-faktor yang mempengaruhi tingkat keberlanjutan RTH publik sebagai cadangan karbon di Kota Pekanbaru. Data diperoleh melalui metode survey, pengamatan dan wawancara dianalisis menggunakan Multi Dimensional Scaling (MDS). Hasil penelitian menunjukkan bahwa pengelolaan RTH publik Kota Pekanbaru termasuk kurang berkelanjutan (49,57). Dimensi sosial (52,24) dinilai cukup berkelanjutan. Sementara dimensi ekologi (46,23), ekonomi (49,91), dan kelembagaan (49,93) tergolong kurang berkelanjutan. Secara umum disimpulkan bahwa pengelolaan RTH Kota Pekanbaru tergolong kurang berkelanjutan. Peningkatan indeks dan status keberlanjutan pengelolaan RTH Kota Pekanbaru perlu diupayakan dalam perspektif pembangunan kota berkelanjutan. Abstract Green Open Space (GOS) is a space with vegetation that serves as an absorber of carbondioxide gas (CO 2 ) in the form of carbon is stored so that a good quality of clean and comfortable city air environment could be achieved. This study aimed to analyze the status and the factors that affect the level of sustainability of public green space as a reserve of carbon in Pekanbaru. Data obtained through the survey, observation, and interviews method were analyzed using Multi Dimensional Scaling (MDS). The results showed that the management of public green space was less sustainable (49.57). The social dimension (52.24) is considered quite sustainable. While the dimensions of the ecological (46.23), economic (49.91), and institutional (49,93) relatively less sustainable. In general the management of Pekanbaru City GOS relatively less sustainable. Improving index and sustainability status RTH Pekanbaru City management needs to be pursued in the perspective of sustainable urban development.

There are Wallago leeri and Mystus nemurus floating net cage culture activities in the Kampar River that use rotten chicken flesh as fish feed and thus the feed remains as well as the fish metabolism reduce the water quality. To understand the quality of the water, a study has been conducted in February – March 2017. There are three sampling sites, in the upstream or before the cage area (Station 1), in the cage area (Station 2) and in the downstream of the cage area (Station 3). Sampling was conducted once. Parameters measured were water temperature, current speed, light penetration, total N, nitrate, nitrite, total P, Orthophosphate, TSS, TDS, pH, DO, CO2, BOD5, and COD. Data were analyzed using a Pollution Index (PI) Method and it is shown that the the water in the Station 1 (1.35) and 3 (1.29) are lightly polluted, while that of the Station 2 (0.86) is categorized as good and suitable for culture activities. The overall condition of water of the Kampar River in the Buluhcina Village is lightly polluted (1.16).

This study aims to analyze the drivers of land use change in Kampar District and to make modeling of land use changes in 2028. This study uses a survey method. To find out the factors driving the changes in land use in Kampar District were analyzed using binary logistic regression with a stepwise method. Forward land use prediction in 2028 with 3 scenarios was carried out by modeling using Markov Chain and Cellular Automata (CA). The results showed that the density population, altitude, slope, distance to the main road, distance to the river, and distance to the subdistrict city are the driving factors that influence changes in the use of forest land to plantations, forests to open land, mixed plantations to built up land, and mixed plantations to plantations in Kampar District The results of land use modeling in 2028 using CA-Markov with 3 scenarios indicate an increase or reduction in several types of land use, especially forests, plantations, paddy fields and built up land use, forest land use decreases widely in scenario I, and scenario II , on the contrary experience an increase in area in scenario III; plantation land use shows the addition of the three scenarios created; Likewise the developed land shows addition to all three scenarios; Furthermore, there is a reduction in paddy fields in scenario I and scenario II, but in scenario III the use of paddy fields does not experience any addition or reduction

The purpose of this study isto analyze the uptake of carbon in polluted waters and unpolluted based on suspended sediment concentration in Rupat Strait. This study used multivariate statistics of Principle Component Analysis (PCA) and regression analysis to clarity the relationship between suspended sediments and primary productivity with carbon uptake. The results indicate that carbon uptake in polluted waters range from 0.023-0.026 tonC/m2/year and unpolluted ranged from 0.034- 0.038 tonC/m2/year. PCA analysis shows that the two main axes (F1 and F2) can represent 82.26% of the total diversity of distribution, indicate the contribution of F1 is 70.08% and F2 is 12.18%. The relationship between total suspended sediment with carbon uptake clearly show if total suspended sediment is higher, the carbon uptake will be lower. On the other hand the relationship between primary productivity and carbon uptake, indicate abundance of primary productivity, the carbon uptake will behigher.

This research was conducted in Dumai sea western waters, Riau Province. Dumai marine waters are part of the territorial waters of Riau that relate directly to the Strait of Malacca, and are at Rupat Strait region, and has a high accessibility of the region, both locally and internationally. Dumai waters is also an estuary waters affected by the activities of the land, and the waters that receive input from various types of waste from various activities in Dumai city and surrounding areas. The research was aimed to knowing the general condition of the Dumai sea western waters, analyzing the content of Pb and Cd in sediments, observing the correlation between organic matter and heavy metal of Pb and Cd, and find out the status of pollution Dumai Sea Western Waters by comparing the results of the analysis with some quality standard countries, The method used is a survey method. Based on the Decree of The Minister of Environment No. 51 of 2004, that the general condition of the Dumai sea western waters still can support the life activities of marine organisms in the waters. The results showed that the concentrations of Pb and Cd in sediments of Dumai is below the threshold value. The results of simple linear regression analysis of heavy metals Pb and Cd with organic matter content showed that the concentration of heavy metals Pb and Cd is not influenced by organic matter content or have a very weak correlation with linear regression equation consecutive y = 0,0834x + 7,7866 and y = -0,001x + 0,0559. The status of pollution of Dumai sea western waters for Pb 8,76 µg/g and Cd 0,04 µg/g still under quality standards Keywords: Dumai Sea Western Waters, Sediments, Heavy Metal Pb and Cd