Determination of potential fisheries areas based on trophic status (Case study in Situ Gede, Tasikmalaya)

Sevi Sawestri,Dina Muthmainnah,Ni Komang Suryati

doi:10.13170/depik.10.2.20177

Sevi Sawestri, Dina Muthmainnah + Show 1 more

Open Access

https://doi.org/10.13170/depik.10.2.20177

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Journal: Depik	Publication Date: May 19, 2021
Citations: 2	License type: cc-by

Affiliation: Ministry of Marine Affairs and Fisheries

Abstract

Situ Gede is one of the artificial lakes/reservoirs in Tasikmalaya, West Java. The lake has functioned as a source of household water needs, fisheries, and tourism. According to determine the development of water management requires information on the trophic status and water quality. This study aimed to obtain information on the trophic status and water quality of Situ Gede. The research was conducted in Situ Gede, Tasikmalaya, West Java, in 2018. Measurement and analysis of water quality parameters used the SNI and APHA methods, while the measurement of trophic status used the Carlson Trophic State Index (TSI). The relationship between water quality parameters and TSI scores was analyzed using Statistica version 8. Based on the analysis, the trophic status of Situ Gede ranged from 69.06-79.04, with an average of 74.61. This value indicated that Situ Gede's trophic status was on a eutrophic level. The physical and chemical parameters that affect the trophic status of Situ Gede are TP, pH, conductivity, TDS, and temperature. The TP values, conductivity, pH, and temperature at Situ Gede were still categorized as normal. The trophic of Situ Gede can be a source of fish growth. Moreover, in general, Situ Gede waters still have sufficient water quality for fish life. Therefore, Situ Gede has the potential to capture fisheries, recreational fisheries, and aquaculture.Keywords:Trophic statusSitu GedeFisheryChlorophyll-aFish Reserve

Highlights

Indonesia has 0.05 million ha of artificial lakes/reservoirs, consisting of around 840 lakes and 735 situ/small lakes (Kartamihardja et al, 2009)
Situ Gede's Total Dissolved Suspense (TDS) content ranged from 167.5-172 mg/l
The highest area of TDS content was in inlet, while the lowest was in rumpon

Summary

Introduction

Indonesia has 0.05 million ha of artificial lakes/reservoirs, consisting of around 840 lakes and 735 situ/small lakes (Kartamihardja et al, 2009). Lake/situ is one of the freshwater sources to support the organisms' activities (Pamudjianto and Sutiono, 2018). The function of situ is as the water catchment area and prevent flooding by flowing the water into the main river. The situ is the area of protection for aquatic flora and fauna, water sources for household water needs, fisheries, and tourism (Susanto et al, 2016). The multipurpose use of situ makes competence between the user. Human activities around the situ are one of the problems in the inland fisheries sector. The waters' carrying capacity will be degraded by human activities, including inland fishery resources (Kartamihardja et al, 2009; Amri et al, 2009; Priadie, 2011; Muthmainnah et al, 2017; Setiawan et al, 2019)

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