Blood cockle interact with physical and chemical oceanography factors caused by the tides intensely, so it’s not possible to blood cockle to free from heavy metal pollution. As a organisms, blood cockles are relatively sedentary and filter feeder, so that the presence of pollutants in the marine waters will be absorbed by the biota. Research on the absorption of metal (Pb) with different salinity level and shell size was conducted in August 2017. It aims to determine the ability of Pb absorption in blood cockle based on salinity level and shell size differences. The method used is experimental method using Factorial Randomized Block Design which is designed from 2 factors namely salinity and shell size. The absorption of Pb by blood cockles were higher at 20 o/oo compared to 25 o/oo, as well as the uptake by 3 cm shells length of the cockles were higher than that by the cockles with 4.5 cm length.

The research was conducted for 60 days from April to June 2017. The aim of this research was to know the utilization of fermented leucaena leaves meal as a substitution of soybean meal in the diets on the growth and feed efficiency of Thai Catfish. Completely randomized design (CRD) was used in this experiment, with one factor, five level treatment and three replications. Fish were reared in 1 m3cages with stocking density 20/cages. Feeding trial were replacing soybean meal with fermented leucaena leaves meal applied to P1 (0%), P2 (25%), P3 (50%), P4 (75%), and P5 (100%). The fish used in this research with 2,13 ± 0,39g of weight. The result of this research showed that fermented leucaena leaves meal has significant effect (P>0,05) on growth and feed efficiency of Thai Catfish. Diets which contains 75% of fermented leucaena leaves meal and 25% of soybean meal (P4) produce the highest specific growth rate (4,11%/day), feed efficiency (62,6%), feed digestibility (59,45%), and protein retention (18,85%). Based on the result of this study conclude that fermented leucaena leaves meal can be used as substitution for soybean meal in diets of Thai Catfish

This research was conducted in October 2017 by taking samples from Tanjung Berlian and Gading Sari coastal waters of Kundur Island, Karimun Regency, Kepulauan Riau Province. This study aims to analyze the heavy metal content of Cu, Cr and Zn on C. Montagnei, to analyze the relationship of heavy metal content with snail size, to evaluate the level of pollution status of Kundur Island waters and to estimate the safety level of snail consumption by human. The metal content on the small size of the snail is larger than the larger size. The average content of Cu in Station 1 was found in small size (1.3877 µg/g), medium size (1,0783 µg/g) and large size (1.6100 µg/g), whilst in Station 2 was found as follow: large size with an average of 1.4417 µg/g. Cr content in Station 1 for small size (5.0383 µg/g), medium size (1.4850 µg/g) and large size (3.0950 µg/g). Snail in Station 2 was only found at Station 2 (1.9517 µg/g). Zn content in small size of snail was in Station 1 (117,4500 µg/g), medium size (122,5200 µg/g) and large size (115,9200 µg/g). Meanwhile, Zn content in snail at Station 2 was 104.7283 µg/g in large size.

Blood cockle interact with physical and chemical oceanography factors caused by the tides intensely, so it’s not possible to blood cockle to free from heavy metal pollution. As a organisms, blood cockles are relatively sedentary and filter feeder, so that the presence of pollutants in the marine waters will be absorbed by the biota. Research on the absorption of metal (Pb) with different salinity level and shell size was conducted in August 2017. It aims to determine the ability of Pb absorption in blood cockle based on salinity level and shell size differences. The method used is experimental method using Factorial Randomized Block Design which is designed from 2 factors namely salinity and shell size. The absorption of Pb by blood cockles were higher at 20 o/oo compared to 25 o/oo, as well as the uptake by 3 cm shells length of the cockles were higher than that by the cockles with 4.5 cm length.

This study aims to determine the effect of adding Tuba Root extract to the media in increasing the survival of tilapia seeds in closed system transportation.The study was conducted in July - October 2018 at the Laboratory of Aquaculture, Aquaculture Study Program, Faculty of Agriculture, Universitas Sriwijaya. The research method used a completely randomized design with four treatments and three replications. Tilapia seed transport media treated with PO: Without the addition of tuba root extract, P1: Tuba root addition with a concentration of 0,00025 ml / l, P2: Addition of tubal root extract concentration 0,00050 ml / l, P3: Addition of tubal root extracts concentration 0.0010 ml / l.The results showed that after the fish was transported for 5 hours, the treatment of the addition of tuba root extract with a concentration of 0.00025 ml / l can reduce the rate of fish metabolism and provide the best results for survival, about 98.3%, erythrocyte 2.6 x 106 cell / mm3, Hemoglobin 7.7 g /dl, Hematocrit 22% and operculum opening 108.67 times / minute.Based on the analysis of variance, the application of tuba root extract on transportation media with a concentration of 0.00025 ml / l has a significant and better effect than other treatments. The results also showed that the addition of tuba root extract above the concentration of 0.00025 ml / l could cause fish to experience death in tilapia seeds in closed system transportation

esearch on the application of local wisdom in rehabilitating river erosion was carried out in Kenegerian Rumbio Kampar District from February to December 2017. The aim of this research is know the forms implementation of local wisdom to rehabilitate river erosion, identifying factors that are inhibiting in rehabilitating river erosion, identifying factors that are inhibiting in rehabilitating river erosion, as well identifying and evaluating effort made in overcoming the obstacles of river erosion rehabilitation at Kenegerian Rumbio Kabupaten Kampar. Results of research local wisdom is obtained 1) effort rehabilitation of river erosion has been implemented, because it has been rundown hereditary by the community and in its application is done by vegetative method and civil engineering method, 2) factors resistor there are 4, hat is household waste dumped into the river, replacement of river bank vegetation with economical vegetation due to the change of mindset, mining activities, and land clearing In river banks, and 3) efforts undertaken to overcome the obstacles of river erosion rehabilitation shall be sanctioned to the violator custom rulesand villages such as: verbal reprimands, ostracism from society, and sanctions are not served in the affairs of Kenegerian Rumbio community.

The research has been investigated on November 2017 which located on Rupat Strait, Riau Province. The purpose of this research to conducted character alteration vertically on sediment. 2 sampling point was tooken using 120 cm pipe. Were the result show that sediment dominated by mud. Based on shepard triangle there is 3 kind of sediment which is sandy mud, muddy sand and mud. The mean size (Mz) result for station I and II around 2,97-6,13Ø and contains 4 fraction sediment : medium silt which mean size (Mz) 5,03-6,00, corse silt which mean size (Mz) 4,07-5,00Ø, fine sand which mean size (Mz) 2,97Ø, and fine silt which mean size (Mz) 6,03-6,13Ø

This research was conducted to identify the exsisting condition of Kajuik lake tourism,to study the development strategy and to find alternative of Kajuik Lake tourism development. The method used in this research is survey method. The results showed that Kajuik Lake has ecotourism potential that is still beautiful, but the facilities and infrastructure in Lake Kajuik have not been adequate, such as the lack of tourism acts and difficult to access Kajuik Lake tour especially during the rainy season beside that, Kecamatan Langgam has traditional cultural tourism destination Balimau kasai potang mogang which is held every year. Based on the analysis of interests (SWOT Analysis) shows that the priority sequence of strategy consists of Development of doing the development of cultural and maritime tourism (ecotourism) with the importance of 2.54, intensifying local tourism promotion with importance value 1.72, supporting facilities and infrastructure of tourism objects with the interests of 0,74

The research was conducted for 60 days from April to June 2017. The aim of this research was to know the utilization of fermented leucaena leaves meal as a substitution of soybean meal in the diets on the growth and feed efficiency of Thai Catfish. Completely randomized design (CRD) was used in this experiment, with one factor, five level treatment and three replications. Fish were reared in 1 m3cages with stocking density 20/cages. Feeding trial were replacing soybean meal with fermented leucaena leaves meal applied to P1 (0%), P2 (25%), P3 (50%), P4 (75%), and P5 (100%). The fish used in this research with 2,13 ± 0,39g of weight. The result of this research showed that fermented leucaena leaves meal has significant effect (P>0,05) on growth and feed efficiency of Thai Catfish. Diets which contains 75% of fermented leucaena leaves meal and 25% of soybean meal (P4) produce the highest specific growth rate (4,11%/day), feed efficiency (62,6%), feed digestibility (59,45%), and protein retention (18,85%). Based on the result of this study conclude that fermented leucaena leaves meal can be used as substitution for soybean meal in diets of Thai Catfish.

This research was conducted in October 2017 by taking samples from Tanjung Berlian and Gading Sari coastal waters of Kundur Island, Karimun Regency, Kepulauan Riau Province. This study aims to analyze the heavy metal content of Cu, Cr and Zn on C. Montagnei, to analyze the relationship of heavy metal content with snail size, to evaluate the level of pollution status of Kundur Island waters and to estimate the safety level of snail consumption by human. The metal content on the small size of the snail is larger than the larger size. The average content of Cu in Station 1 was found in small size (1.3877 µg/g), medium size (1,0783 µg/g) and large size (1.6100 µg/g), whilst in Station 2 was found as follow: large size with an average of 1.4417 µg/g. Cr content in Station 1 for small size (5.0383 µg/g), medium size (1.4850 µg/g) and large size (3.0950 µg/g). Snail in Station 2 was only found at Station 2 (1.9517 µg/g). Zn content in small size of snail was in Station 1 (117,4500 µg/g), medium size (122,5200 µg/g) and large size (115,9200 µg/g). Meanwhile, Zn content in snail at Station 2 was 104.7283 µg/g in large size.

This study aims to determine the effect of adding Tuba Root extract to the media in increasing the survival of tilapia seeds in closed system transportation.The study was conducted in July - October 2018 at the Laboratory of Aquaculture, Aquaculture Study Program, Faculty of Agriculture, Universitas Sriwijaya. The research method used a completely randomized design with four treatments and three replications. Tilapia seed transport media treated with PO: Without the addition of tuba root extract, P1: Tuba root addition with a concentration of 0,00025 ml / l, P2: Addition of tubal root extract concentration 0,00050 ml / l, P3: Addition of tubal root extracts concentration 0.0010 ml / l.The results showed that after the fish was transported for 5 hours, the treatment of the addition of tuba root extract with a concentration of 0.00025 ml / l can reduce the rate of fish metabolism and provide the best results for survival, about 98.3%, erythrocyte 2.6 x 106 cell / mm3, Hemoglobin 7.7 g /dl, Hematocrit 22% and operculum opening 108.67 times / minute.Based on the analysis of variance, the application of tuba root extract on transportation media with a concentration of 0.00025 ml / l has a significant and better effect than other treatments. The results also showed that the addition of tuba root extract above the concentration of 0.00025 ml / l could cause fish to experience death in tilapia seeds in closed system transportation.

Research on the application of local wisdom in rehabilitating river erosion was carried out in Kenegerian Rumbio Kampar District from February to December 2017. The aim of this research is know the forms implementation of local wisdom to rehabilitate river erosion, identifying factors that are inhibiting in rehabilitating river erosion, identifying factors that are inhibiting in rehabilitating river erosion, as well identifying and evaluating effort made in overcoming the obstacles of river erosion rehabilitation at Kenegerian Rumbio Kabupaten Kampar. Results of research local wisdom is obtained 1) effort rehabilitation of river erosion has been implemented, because it has been run down hereditary by the community and in its application is done by vegetative method and civil engineering method, 2) factors resistor there are 4, hat is household waste dumped into the river, replacement of river bank vegetation with economical vegetation due to the change of mindset, mining activities, and land clearing In river banks, and 3) efforts undertaken to overcome the obstacles of river erosion rehabilitation shall be sanctioned to the violator custom rulesand villages such as: verbal reprimands, ostracism from society, and sanctions are not served in the affairs of Kenegerian Rumbio community.

Research on analysis resources bioeconomy anchovies rice has been implemented in August 2017 in waters Labuhanbatu North Sumatera. The purpose of this research to estimate Maximum Sustainable Yield (MSY) and Maximum Economic Yield (MEY), Effort Maximum Sustainable Yield (EMSY), effort Maximum Economic Yield (EMEY) and Effort Open Acces (EOA) resources anchovies rice in waters Labuhanbatu District. This research in a survey by analysis of data used the bioeconomy Gordon-Schaefer model. The result showed that the catch maximum sustainable (MSY) anchovies rice in waters Labuhanbatu District of 8,934.71 tons/years and Effort Maximum Sustainable Yield (EMSY) namely 47,379 trip/years, Maximum Economic Yield (MEY) anchovies rice namely 8,828.51 tons/years and Effort Maximum Economic Yield (EMEY) namely 42,213 trip/years and Effort Open Acces 84,427 trip/years. Profit level acquired while MSY Rp. 2,299,906.65 per years and MEY Rp. 2,334,868.58 per years. Based on analysis Gordon-Schaefer obtained model that production of actual anchovies rice in waters Labuhanbatu North Sumatera are still under the potential sustainable

The research has been investigated on November 2017 which located on Rupat Strait, Riau Province. The purpose of this research to conducted character alteration vertically on sediment. 2 sampling point was tooken using 120 cm pipe. Were the result show that sediment dominated by mud. Based on shepard triangle there is 3 kind of sediment which is sandy mud, muddy sand and mud. The mean size (Mz) result for station I and II around 2,97-6,13Ø and contains 4 fraction sediment : medium silt which mean size (Mz) 5,03-6,00, corse silt which mean size (Mz) 4,07-5,00Ø, fine sand which mean size (Mz) 2,97Ø, and fine silt which mean size (Mz) 6,03-6,13Ø.

This research was conducted to identify the exsisting condition of Kajuik lake tourism,to study the development strategy and to find alternative of Kajuik Lake tourism development. The method used in this research is survey method. The results showed that Kajuik Lake has ecotourism potential that is still beautiful, but the facilities and infrastructure in Lake Kajuik have not been adequate, such as the lack of tourism acts and difficult to access Kajuik Lake tour especially during the rainy season beside that, Kecamatan Langgam has traditional cultural tourism destination Balimau kasai potang mogang which is held every year. Based on the analysis of interests (SWOT Analysis) shows that the priority sequence of strategy consists of Development of doing the development of cultural and maritime tourism (ecotourism) with the importance of 2.54, intensifying local tourism promotion with importance value 1.72, supporting facilities and infrastructure of tourism objects with the interests of 0,74