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Rizka Aprisanti
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Pascasarjana Ilmu Lingkungan Universitas Riau Gedung I, Jln. Pattimura No. 9, Gobah Pekanbaru-Indonesia (28131) Phone: (0761) 23742 Fax : (0761) 23742
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INDONESIA
ECOTONE
Published by Universitas Riau
ISSN : 27464849     EISSN : 27465640     DOI : https://doi.org/10.31258/ecotone.1.1.p.1-10
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
The journal publishes Original Research Articles (full papers and short communications) and Review (full and mini-reviews) in all aspects of Wetland (Peat swamp Forest Restoration) Estuaries (Mangrove, macrophytes, or plant species present in the area). Migration, and establishment of new plants, species richness, the abundance of introduced species.Sedimentation and movement of sediment, landslides, land shift. Exploitation of Aquatic Resources (Coral Reefs, Seagrass, Algae, Rocky Shore), Coastal Area Development, Coastal Erosion. The manuscript should be prepared in good English and has to proofread by a native speaker or professional proofreader. The proposed manuscript should not be previously published or be considered for any other journals, and should be free of plagiarism. The submitted manuscript will be initially screened by an editor to check the scope, language and suitability, and to detect plagiarism using Turnitin software. The journal publishes one volume and two issues (January - July & August - December) per year. The accepted manuscript will be online once the revised version has been received and approved by the editor in chief.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 21 Documents
 1   2   3 
Saprobic Index and Composition of Phytoplankton in the Sungai Jang, Tanjungpinang, Indonesia Tengku Said Razai; Thamrin Thamrin; Nofrizal Nofrizal; Viktor Amrivo; Ramses Ramses; Yusni Ikhwan Siregar; Imam Pangestiansyah Putra; Rika Kurniawan
ECOTONE Vol 1, No 2 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.2.p.47-56

Abstract

Environmental pollution that occurs in Tanjungpinang City, cannot be separated from the pollution of the aquatic ecosystem. Water pollution is caused by the presence of waste from residential activities, shops, industry, and other activities that produce waste. Likewise, what happens in the waters of the Sungai Jang, the activities of settlements, shops, industry can cause water pollution in this area, so a study is needed to see the extent of environmental pollution. The indicator used to determine the level of water pollution is by looking at the saprobity index through the phytoplankton community. This research was conducted by dividing the research stations based on differences in activity, namely; station 1 (settlements), station 2 (mangroves), station 3 (shops, industry), station 4 (reclamation). The results showed that the composition of the phytoplankton species found in the waters of the Sungai Jang, Tanjungpinang consisted of 17 species which were classified into 5 divisions. Diatomae types have the most number of species among other divisions, and the most dominating. The dominance of phytoplankton from the class Bacillariophyceae (Diatomae) cannot be separated from the role of nutrients in the water. The average saprobic index value of -0.39 is classified as Moderately Polluted (Meso Saprobik). Pollution that occurs is a result of organic waste from existing activities, causing an increase in nutrients. From the results of measurements in the field, the nutrient content (nitrate and phosphate) in the waters of the Sungai Jang had exceeded the quality standard.
Belida Fish Cultivation (Notopterus notopterus, Pallas 1769) as Swamp Fish which is Nursed with Different Stocking densities Sukendi Sukendi; Thamrin Thamrin; Ridwan Manda Putra; Ade Yulindra
ECOTONE Vol 1, No 1 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.1.p.1-10

Abstract

Belida fish (Notopterus notopterus, Pallas 1769) is one of Indonesia's endemic fish which is often found in swamp waters having high economic value. The population of belida fish until now has decreased due to the high fishing activities in nature. To maintain the population of belida fish in order to remain sustainable from nature  is by cultivation activities. One of  important aspect in belida fish culture is the determination of stocking density used. This study aims to determine the optimum stocking densities in the belida fish farming activities. This research was conducted from June to August 2019 in the fish pond of Sungai Paku Village, Kampar Kiri Subdistrict, Riau. The design used was a completely randomized design with 3 levels of treatment and 3 replications. The treatment used in this study was stocking density consisting of 5, 10 and 15 fish / m3. The results showed that the 5 fish / m3 stocking density treatment produced the optimum fish growth with absolute length growth value (11.48 cm), absolute weight growth (48.73 g), daily growth rate (2.83%), survival rate (86 , 7%), fat retention 1.27% and protein retention value 19.83%.
Biodiversity of Bivalvia Tridacnidae in Marine Conservation Area : Lesson Learned from Abang Island, Kepulauan Riau Province-Indonesia Ramses Ramses; Fauziah Syamsi; Thamrin Thamrin; Nofrizal Nofrizal; Hamdayani Hamdayani; Tengku Said Razai; Rika Kurniawan
ECOTONE Vol 1, No 1 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.1.p.32-40

Abstract

Kima (local name) is known as a giant clam of a group of bivalve mollusca belonging to the Tridacnidae family that live in coral ecosystems zhich are considered as endangered species (CITES: Appendix II). This study aims to determine the biodiversity and ecological index of Tridacna in Abang Island waters, as well as determine the status of its presence in this area. A field survey was conducted on the type, number and distribution of tridacnae at each location by SCUBA equipment dive using the sweept area method on the transect lines. The transect wasplotted at 2-5 m in depth parallel to the shoreline at each observation station with covering observation area as far as 2.5 meters both on the left and 2 right side of the observers. The results showed 5 species of Kima with a total of 75 individuals, namely Tridacna maxima, T. Squamosa, T. crocea, T.derasa and H. hipppus. The densitywas maximal for T.maxima 0.014 individu/M2 folowing by T.squamosa (0.009/M2), T.crocea (0.006/M2), T.derasa (0.003/M2), H.hipppus (0.001/M2). While the relative density were T.maxima (44%), T.squamosa (26.7%), T.crocea (18.7%), T.derasa (8.0%), and H.hipppus (2.7%). The diversity index (H ') was 1.33 with representing a medium diversity category, dominance index (D) equal to 0.70 and Uniformity (E') equal to 0.82. T. maxima, T. squamosal, and T. crocea were found abundantly in the study area while T.derasa and H. hippopus were hard to find and T. gigaswasabsences presumably due to local extinction and functional extinction. Protectionof Tridacna in natural habitats is a must to maintain the ecological function and sustainability of Tridacn awith strict and controlled management.
Biomass and Carbon Content in Mangrove Tree, Mengkapan Village, Sei Apit Subdistrict, Siak Regency, Riau Rasoel Hamidy
ECOTONE Vol 1, No 1 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.1.p.11-20

Abstract

The mangrove forest area is an ecosystem with highly productive, with a carbon production rate balanced by tropical wet forests. Global warming is increasingly felt by the world's population which is characterized by global climate change. The obvious impact is greatly felt by rising sea levels. This study aims to determine the total surface biomass and carbon stored in mangroves in Mengkapan village, Sungai Apit Sub-district, Siak Regency, Riau. The method used is a 10 x 10 m square block, making 5 transect lines along the coastline and 5 transect lines along the river line. The results of the study found 10 types of mangroves that make up the study area with calculations of the number of mangrove stands found 3236 stands/ha with a total biomass of 61732.74 and carbon absorption of 113.18 tons C/ha.
Carrying Capacity Analysis of Aquatic Environment in the Fishery Reserves Area of Terubuk Fish in Riau Province Hendra Saputra; Deni Efizon; Asmika Harnalin
ECOTONE Vol 1, No 1 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.1.p.21-31

Abstract

This study aims to determine and analyze the carrying capacity of that area and to estimate the potency of the fish based on the Net Primary Productivity (NPP) and it was conducted in February 2018. Samplings were conducted 6 times, once/ week. Parameters measured were temperature, brightness, current speed, salinity, N, P, pH, DO, and chlorophyll-a concentration. Data on sea surface temperature, PAR (Photosynthetic Active Radiation), and chl-a concentration were also obtained from Aqua MODIS provided by NASA Ocean Biology Processing Group. Based on data obtained from the field, the NPP distribution value ranged from 18.27 to 74.98 mg C/m2/day, while the NPP value that was calculated from the Aqua MODIS data was ranged from 2,208 to 3,272 mg C/m2/day.Based on field obtained data, the carrying capacity of the study area, in general, was 97.92 tons and the potency was 48.86 tons. Based on Aqua MODIS data, the carrying capacity was 7,356.02 tons and the potency was 3,678.01. In that area, the amount of T. macrura was around 40% of total capture and it can be predicted that the carrying capacity of T. macrura39.09 tons and the potency was 19.54 tons (based on field data) or the carrying capacity was 2,942.41 tons and the potency was 1,471.20 tons (based on aqua MODIS data). Results of field data-based calculation indicate that the carrying capacity and the potency of T. macrura in the study area was lead to overfishing.Keywords: fish potency,  net primary productivity (NPP), overfishing, migratory fish 
Cultivating of Synodontic Fish Larvae (Synodontic eupterus) with Different Initial Feeds Sukendi Sukendi; Windarti Windarti; Ridwan Manda Putra; Asep Permana
ECOTONE Vol 1, No 1 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.1.p.41-47

Abstract

Fish Larvae Maintenance Research Synodontic (Synodontic eupterus) with Early different Feeding type held from July to August 2018 Synodontic fish hatcheries and the Research Institute for Aquaculture Development of Ornamental Fish Depok, West Java. The purpose of this study was to analyze the type and duration of feeding changes in increasing the growth and survival of synodontic fish larvae to seed size. From the research that has been carried out, the best feed for synodontic fish larvae is obtained giving artemia feed after 3 hatching days, 10 to 40 days given tubifex feed with absolute weight growth values of 0, 3762 grams, weight growth rates daily 15.92%, absolute length growth 19.49 mm, and 95% larval life. 
Growth and Feed Efficiency of Chopped Grouper Fish Fry (Epinephelus fuscoggutatus> Asih Amanda; Wiwin Kusuma Atmaja Putra; Tri Yulianto
ECOTONE Vol 1, No 2 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.2.p.77-84

Abstract

This study aims to determine the best feeding rate (FR) in increasing feed efficiency and growth of Chopped grouper and to determine the efficiency and growth of Chopped grouper (Epinephelus fuscoguttatus x Epinephelus lanceolatus). This research was conducted in February-March 2020 for 42 days at the Household Scale Hatchery of the Marin Agri Sejahtera Cooperative, Tanjungpinang City, Riau Islands. The method used was experimental with a completely randomized design (CRD) with 4 treatments and 3 replications where K treatment (15% trash feed), A treatment (10% trash feed), B treatment (20% trash feed), treatment C (feeding 25% trash feed). The results of the study, through statistical analysis, showed that the papain enzyme dose was able to have a very significant effect.
The Effect Of Fasting On The Growth Response Of Chopped Grouper Fish (Epinephelus fuscoguttatus x Epinephelus lanceolatus) Indriana Citra Dewi; Wiwin Kusuma Atmaja Putra; Tri Yulianto
ECOTONE Vol 1, No 2 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.2.p.85-92

Abstract

This research aims to determine the effect of appropriate feeding time for the growth of Chopped Grouper Fish (Epinephelus fuscoguttatus x Epinephelus lanceolatus). This research was conducted from March to April 2020 for 42 days at Madong village, silver pompano culture group, Tanjungpinang City, Riau Islands Province. The methodology used in this research was experimental with a completely randomized design (CRD) with 3 treatments and 4 replications, which the T1: fed daily  T2: 1 day given food 1 day of fasting. T3: 2 days given food, 1 day of fasting. Analysis of the data using One-Way ANOVA showed that the best absolute weight growth was found in T1 treatment of (29.13 ± 1.07 g), daily growth (SGR) (0.69 ± 0.03 cm). The results obtained indicate that T1 treatment is the best treatment for growth
Sustainable Management of Guruh Gemurai Waterfall Ecotourism in Kuantan Singingi Thamrin Thamrin; Ridwan Manda Putra; Nofrizal Nofrizal; Rahman Karnila
ECOTONE Vol 1, No 2 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.2.p.93-104

Abstract

Tourism Location of Guruh Gemurai Waterfall, Kuansing is one of the most beautiful tourist destinations to visit, which is located in Kuasing Regency, Riau. The study is conducted from September to October 2010. To see the sustainability of this tourist area, research was carried out to identify current environmental conditions. Factors for future development and assessing the ecotourism sustainability of Guruh Gemurai Waterfall using a survey. From the research results, it is found that many factors need to be improved by the management, especially those related to the safety of visitors, especially the stairs and handrails at level 4, the facilities besides being equipped with representative trash cans. It is recommended that the seven levels be managed, then all that is available must be developed again, both the damaged ones and the new ones, which must be remade so that it affects labor absorption. From the leveraging factors, there are six: covering the basic water substrate, water conditions, having protected species, local labor absorption, environmental knowledge, and growth in the number of traders. However, from these six leveraging factors, there are only three factors that can be improved, namely local labor absorption, environmental knowledge, and growth in the number of traders.
Rapid Assessment of the Ecological Value of Buaya Lake in Bandar Alai Kari, Kuantan Tengah, Kuantan Singingi Regency, Riau Rasoel Hamidy; Yusni Ikhwan Siregar
ECOTONE Vol 1, No 2 (2020)
Publisher : Riau University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ecotone.1.2.p.57-65

Abstract

In Bandar Alai Kari, Kuantan Tengah Sub-district, Kuantan Singingi Regency, Riau, there is a Buaya Lake. According to the history, the Buaya (crocodiles) Lake, used to be a place for river crocodiles to live (an area of approximately 4.5 ha). To obtain data on the value of the lake's conservation status (ecological value), a rapid assessment method is used using the ECELS index. Observations in the field and with the help of drones to observe the components of the ECELS index assessment, the index value is less than 30. From this value it can be concluded that the Bandar Alai Kari crocodile lake is in a very bad conservation status and needs to be restored

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