International Journal of Scientific and Research Publications, Volume 11, Issue 7, July 2021 9 ISSN 2250-3153 This publication is licensed under Creative Commons Attribution CC BY. http://dx.doi.org/10.29322/IJSRP.11.07.2021.p11503 www.ijsrp.org The Seaweed Kapppaphycus alvarezii cultivation from different aquatic activity locations Nuraina Abbas 1 , Rajuddin Syamsuddin 2 , Dody Dh. Trijuno 2 1) Magister Program of Fisheries Science, Hasanuddin University 2) Faculty of Marine Science and Fisheries, Hasanuddin University Makassar – South Sulawesi DOI: 10.29322/IJSRP.11.07.2021.p11503 http://dx.doi.org/10.29322/IJSRP.11.07.2021.p11503 Abstract- This research was conducted to analyze the growth rate at different locations, namely residential areas, estuary area and ports. The research was conducted in the coastal waters of Bantaeng Regency. The research was conducted by growing K. alvarezii in different environments, namely the long line planting method. In each of these environments, 50 grams of seed was tied to the tiller rope, the length of the tiller rope was 15 cm, the distance between the tiller points was approximately 20 cm with a length of 5 m each rope as many as 3 replications. The results showed the highest daily and absolute growth rates were 1.31% and 14.72 g in the estuary area. Key Word- Kappaphycus alvarezii, location, growth rate I. INTRODUCTION eaweed of K. alvarezii is widely cultivated by coastal communities because it can increase the level of community income and the need for raw materials increases so that it can become a source of foreign exchange due to the large demand for seaweed for export. Seaweed is a leading export commodity from South Sulawesi Province, where 70% is exported to China (Suryawati, 2018). K. alvarezii is a type of seaweed that is widely used because of its carrageenan content which is widely used as raw material, cosmetics and food needs at home and abroad (export). Carrageenan contained in K. alvarezii is a type of kappa carrageenan. The Regency of Bantaeng is a coastal area that has a 21 km coastline, making this area one of the seaweed producers in South Sulawesi. In general, the people who live around the coast are not only fishermen but also seaweed cultivators because the results obtained can significantly increase their income. Almost along the coastline is filled with seaweed cultivation. The success of K. alvarezii cultivation is influenced by several factors, one of which is the location. According to Doty (1988, in Yusuf, 2004) site selection is one of the conditions for success in seaweed cultivation. The ecological factors of seaweed cultivation include physical, chemical and biological environmental conditions. Coastal areas in Bantaeng Regency can be in the form of residential areas, river estuaries or ports which are suspected of having different environmental quality conditions. To increase seaweed production in Bantaeng Regency, it is necessary to research the potential of seaweed maintenance in the three coastal areas. II. RESEARCH METHOD The research was conducted from September to November 2019 in the coastal waters of Bantaeng Regency. Analysis of water quality parameters was carried out at Water Quality Laboratory, Hasanuddin University, Makassar. The research location consists of three locations with different waters conditions, namely around: 1) Settlements (Station 1) ±400 m from the beach 2) River estuary (Station 2) ±400 m from the beach 3) Ports (Station 3) ±500 m from the beach The distance between settlements to the estuary area is ±10 km, the estuary area to the port is ±5 km. S