CD Disertasi
Studi Bioekologi Siput Gonggong (Laevistrombus Canarium Linnaeus, 1758) Dan Pemanfaatan Ramah Lingkungan Di Kota Batam
The enormous potential of Indonesia's marine fisheries resources should be able to provide maximum benefits in a sustainable manner for the community and the country, if managed properly and responsibly. The importance of mollusk biota for human life has started since ancient times. One of the mollusk marine biota from the gastropod group that is interesting to study is the barking snail (Laevistrombus canarium Linnaeus, 1758). Gonggong snails are a fishery resource that has economic value and has the potential to become a superior fishery commodity in the Riau Islands Province, especially in Batam City. Meanwhile, the supply of Gonggong snails still depends solely on catching them in nature. In addition, pressure on the environment and habitat of Gonggong snails is increasing due to anthropogenic activities. Ecologically, each species has a unique ecological niche. In scientific studies involving taxa, it is important to have accurate and correct identification of the taxon. The environmentally friendly and sustainable use of Gonggong snails is an effort to combine social, economic and ecological goals. Even though the Gonggong snail resource can be renewed, this does not mean that this fisheries resource can be utilized without limits. On the other hand, the rapid development and development of industry in Batam City, directly or indirectly, has had a serious impact on environmental quality. The objectives of this research are: 1) Identifying Gonggong seasnail species in Batam City waters through molecular taxonomy (DNA barcoding). 2) Analyze the relationship between environmental changes and the bioecological aspects of Gonggong seasnails in Batam City waters. 3) Analyze the sustainability status of Gonggong seasnail resources based on ecological, economic, social, and technological dimensions as well as legal and institutional dimensions. 4) Test what lever factors influence the sustainability of Gonggong seasnail fishery resources in Batam City waters. 5) Develop a model scenario for environmentally friendly and sustainable use of the Gonggong seasnail fishery in Batam City.
DNA barcoding tests on Gonggong mud sea snails and Gonggong sand sea snails in the waters of Batam City show that they are genetically similar and are the species Laevistrombus canarium Linnaeus, 1785. Research findings show that there is an influence on the environmental quality of temperature, DO, salinity, brightness, depth, fraction sediment, and nutrients on the similarity of abundance and distribution patterns of the sea snail L. canarium in the waters of Batam City. Other findings show the influence of the concentration of heavy metals Pb, Cd, Cr, Cu, Fe, and Zn in water, sediment, and biota on the morphometrics and sex ratio of L. canarium. The sustainability status of the Gonggong seasnail resource is less than sustainable in ecological, economic, as well as legal, and institutional dimensions. Meanwhile, in the social and technological dimensions, it is quite sustainable. Sensitive factors that influence efforts to create sustainability of Gonggong sea snails in Batam City waters include biota density, alternative non-fishing livelihoods, catching before maturity, income as a Gonggong fisherman, potential conflict, fishing time and season, as well as local wisdom and systems social value. The model for sustainable management of Gonggong sea snails in Batam waters is an interaction between the key factors biota/population density (p), alternative non-fishing livelihoods/livelihood (l), immature fishing (im), income as a Gonggong fisherman/income ( in), potential conflict (c), fishing time
viii
and season (s), and local wisdom and value system (w), which can be described in a functional relationship: PRamses = f(p,l,im, in, c, s, w). The new paradigm in sustainable management of Gonggong seasnails in Batam City waters emphasizes the targets: i) biology: increasing biota populations; ii) social: minimizing conflict and potential conflict as well as developing local wisdom and value systems in managing fisheries resources, reducing dependence on fishing and selectivity in catch size and fishing time; iii) economic: development of alternative sources of livelihood in the community. This paradigm is carried out with a development strategy: i) management areas, ii) diversity of alternative livelihoods; and iii) local arrangements in the management of Gonggong seasnail fisheries resources.
Tidak tersedia versi lain