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Bugis, Nila Nikmatia
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Agriculture, Biological Sciences & Forestry

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Estimation Of Productivity Level Of Sampolawa Bay, South Buton District, South East Sulawesi Cahyani, Waode Sitti; Bugis, Nila Nikmatia; Hasanah, Nur; Purnamasari, Wa Ode Dian
AgriSains Vol 21, No 2 (2020)
Publisher : FAPETKAN UNTAD

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Abstract

The coastal area is an area that is vulnerable to excessive nutrient input. Excessive intake of nutrients can disrupt the balance of the ecosystem in Sampolawa Bay because it is suspected to be the cause of eutrophication in the water column. This study aims to estimation of productivity level in Sampolawa Bay. The study was conducted in July 2020. Determining the productivity level of the waters using the TRIX method by collecting data on phosphate, nitrogen, dissolved oxygen and chlorophyll-a. The results showed the productivity level in Sampolawa Bay ranged from 0.5271 to 0.8735 in the category of oligotrophic or no eutrophication.
Identification of Seagrass Ecosystem in the Waters of the Makasar Island, Baubau City Junaidin Sirza, La Ode Muhammad; Cahyani, Waode Sitti; Bugis, Nila Nikmatia; Hasanah, Nur
AgriSains Vol 21, No 2 (2020)
Publisher : FAPETKAN UNTAD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (17.935 KB)

Abstract

The seagrass ecosystem is one of the important ecosystems in coastal areas and has high productivity. The existence of seaggrass has an important for other marine biota, human, and the environment so that the possibility of a decrease in quality and quantity can reduce the benefits generated by seagrass beds and make an significant impact for the surrounding environment. This study aims to identify the types of seagrass and the percentage of seagrass cover in the waters of Makasar Island, Baubau City. This research was conducted on February 2020 in Makasar Island Waters, Baubau City, South East Sulawesi. The observation of the condition of seagrass cover and the density of the seagrass was carried out using a quadratic transect of 0.5 m x 0.5 m with a line transect length of 100 m. The results of this study indicate the types of seagrass found in Makasar Island waters, namely Enhallus accoroides, Cymodocea serullata, Halophila ovalis and Thalassia hemprichii with a wide range of seagrass cover is 7.39 - 51.7%. The area of seagrass cover in Makasar Island is categorized as bad and damaged. The water physic and chemical parameters are still optimum in supporting the development of seagrass.
Identification of Gastropods on Seagrass Meadows at Makassar Island Waters, Baubau, South East Sulawesi Bugis, Nila Nikmatia; Cahyani, Waode Sitti; Sirza, LM. Zunaidin
AgriSains Vol 21, No 2 (2020)
Publisher : FAPETKAN UNTAD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (17.935 KB)

Abstract

The purpose of this study was to identify, find out the type, composition, diversity, uniformity of gastropods in seagrass beds in the waters of Makasar Island, Bau-Bau City. The benefits to be achieved are providing information, knowing the conditions, and can be the basis for further research in order to maintain the balance of resources and gastropod ecosystems in the waters of the island of Makassar, Baubau City. This research was conducted in January to March 2020, located in the waters of the island of Makassar, Sukanayo Village, Kokalukuna District, Baubau City, Southeast Sulawesi. The method used is a qualitative method which uses primary and secondary data at 3 (three) stations. Gastropods found in the waters of Makassar are 22 species. The most commonly found species are Nassarium globosus and Conus magus. The highest composition of gastropods is around 25% - 40.91%. Diversity index ranges from 2.62 to 2.82, uniformity index ranges from 0.83 to 0.89, and dominance index from 0.17 to 0.21. 
Co-Authors Cahyani, Waode Sitti Junaidin Sirza, La Ode Muhammad Nur Hasanah Purnamasari, Wa Ode Dian Sirza, LM. Zunaidin