Most of The Pane Island Coastal communities are not yet aware of the potential of Sargassum in their coastal area even though its benefits as a foodstuff is quite high, for this reason, it is necessary to have scientific information about the importance of the nutritional content of Sargassum sp. such as proximate chemical composition and crude fibers as a components of functional food product. The proximate chemical composition and crude fibers of Sargassum were studied to understand the nutritional profile. The results show that physical-chemical parameters of waters play an essential role in the nutrients composition of Sargassum. Among the two seaweeds, S. cristaefolium contained highest protein and carbohydrates content (8.54% and 7.25%, respectively) and S. crassifolium possessed highest ash, fat and crude fiber (41.52%, 0.30%, and 24.54%, respectively). Nutrient content and crude fiber in Sargassum cristaefolium and Sargassum crassifolium can be used as components of functional foods.
HighlightsSustainability index from fish fillet industry is important to know because a fishing industry just not looking for feasibility study in economic dimension but all dimension (resources, technology, social, legal and institutional)Multidimension sustainability index from fish fillet processing industry in Batang is included in the category of “Self Sustainable” with a value of 50.39 The dimensions causes of the low sustainability in fish fillet industry are social, legal and institutional, and technology with the value of each dimension that is 48.6; 40.27; 48.9 in means “less sustainable”AbstractThe existence of fish fillet processing industries in Batang are able to have a positive impact on the surrounding community because it can create employment opportunities and increase community income. Therefore, it is necessary to know the importance of the sustainability of fish fillet processing industries to see the prospect of fishery business after a feasibility study. The aims of this study were to analyze the sustainability index value, determine the sensitive attributes of each dimension, and provide alternative management strategies of fish fillet processing industries in Batang. The method of analysis used was Rapfish method which is based on the technique of ordination by putting something measured using MDS on the program of Rapfish G77 Alscal program (VBA and Excel). Status management of fish fillet processing industries sustainability in Batang, which are multidimensionally sustainable, are 50.39. Whereas in other dimensions such as resources 58.20 (quite sustainable), economic 55.33 (fairly continuous), social 48.60 (less sustainable), legal and institutional 40.27 (less sustainable) and technological 48.90 (less sustainable). Based on this results, several management strategies should be prepared including increasing the capacity of government institutions, enhancing the role of fish fillet processing industry on society, increasing the application of technology and infrastructure, increasing the revenue of the entrepreneurs of fish fillet processing industry, preventing decline of quality and quantity of fish resources.
Macroalgae or often referred to as seaweed is very abundant in Indonesian waters especially sea waters, including in Central Tapanuli. But it is unfortunate because not many people know about it, even though the seaweed has many benefits. This study aims to determine the amount of macroalgae cover and their diversity on one island in Central Tapanuli, namely Pane Island. This research was conducted from July to September 2019 in intertidal zone of Pane island with three observations, once a month. At the study site, three macroalgae classes were found consisting of six species, namely Sargassum crassifolium, Sargassum cristaefolium, Halimeda macroloba, Padina minor, Turbinaria decurrens and Hypnea pannosa. The highest macroalgae cover percent is occupied by Phaeophyta division and the lowest macroalgae cover percent is occupied by Rhodophyta division.
Pane Island is one of the tourist destinations in Tapanuli Tengah Regency, visually Pane Island has some of marine ecosystems such as seagrass, mangrove, seaweed, and dead coral ecosystems. Sea cucumbers are invertebrates, it’s have high commercial value and has ecological functions. In this study, sea cucumbers identification, abundance and seagrass cover was investigated in Pane Island. The results showed that 1 sea cucumber species were found, Holothuria leucospilota. Sea cucumber abundance ranged from 0 to 1.2 ind/m2. Based on Principal Components Analysis (PCA), sea cucumber abundance is positively related to temperature, current, pH, salinity, total nitrogen, phosphate, and C-organic content. Furthermore, sea cucumber abundance is negatively related to the parameters of water depth, water transparency, DO and percentage of seagrass cover.
Belawan Oceanic Fishing Port is one of the bases of capture fisheries activities in North Sumatera which has considerable fishery potential. The most dominant fish caught in Belawan is Goldstripe sardinella (Sardinella gibbosa). Large-scale fishing activities are considered to be able to reduce the population of S. gibbosa in Belawan, mainly if fishing is carried out at any time. This study aims to analyse the utilization rates and sustainable potential of S. gibbosa at Belawan. This research was conducted by using surplus method production from May to June 2019. The annual catch, effort data, and fishing gear of S. gibbosa were analysed to estimate the Maximum Sustainable Yield (MSY). The main fisheries operating in catching S. gibbosa include trawl, fishing line, and gillnet. The Maximum Sustainable Yield (MSY) based on the Schaefer model obtained a value of 1821.92 and 1030.87 for on the fox model; the optimum effort based on the Schaefer model obtained a value 22.76 and 23.24 on the fox model. Based on these results, we concluded that the production of S. gibbosa at Belawan PPS has overfishing in 2014 with a production of 2085 tons and total 47 fishing trip.
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