Distribusi Spasial Habitat Cumi-Cumi Di Perairan Selat Alas, Provinsi Nusa Tenggara Barat

Kamilah, Salsha Afra' (2021) Distribusi Spasial Habitat Cumi-Cumi Di Perairan Selat Alas, Provinsi Nusa Tenggara Barat. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Selat Alas merupakan area yang berpotensi sebagai daerah penangkapan ikan di Nusa Tenggara Barat terutama bagi nelayan. Penangkapan ikan di daerah Selat Alas didominasi dengan ikan demersal dan cumi-cumi. Dengan area penangkapan cumi-cumi di dominasi dengan beberapa spesies terutama Loligo edulis. Menurut Pralampita. 2002, dari hasil pengamatan didapat 7 jenis cumi-cumi yang didominasi oleh cumi tarusan (Loligo edulis) sebesar 50%. Parameter yang berpengaruh terhadap daerah penangkapan ikan diantaranya adalah kedalaman, ketersediaan makan, musim, salinitas, temperatur, dan sedimen (Borzone, dkk. 1999). Pada penelitian ini, parameter yang akan digunakan adalah salinitas, suhu air laut, batimetri serta arus sebagai parameter pendukung. Batasan waktu pada penelitian ini dibagi menjadi dua yaitu pada periode musim angin muson timur (April hingga September) dan periode musim angin muson barat (Oktober hingga Maret) pada tahun 2020. Metode yang digunakan adalah Kriging Interpolation pada perangkat lunak ArcGIS. Dari hasil pengolahan, didapatkan bahwa tingkat salinitas pada musim angin muson timur berada pada rentang 32,2 – 33,1 psu. Sedangkan, pada musim angin muson barat berapa pada rentang 33,2 – 34,5 psu. Kedua nilai salinitas tersebut masuk ke dalam preferensi habitat cumi-cumi yang berada pada rentang 27 – 37 psu. Untuk suhu, didapatkan bahwa tingkat suhu pada musim angin muson timur berada pada rentang 26,8° – 27,5 °C. Sedangkan, pada musim angin muson barat berada pada rentang 29,1° – 30,5 °C. Hanya periode musim angin muson timur dengan nilai suhu air laut tersebut masuk ke dalam preferensi habitat cumi-cumi yang berada pada rentang 15° – 28° C. Sedangkan, untuk periode musim angin muson barat tidak didapatkan persebaran habitat cumi-cumi karena rentang tingkat suhu lebih tinggi daripada rentang tingkat suhu yang sesuai preferensi habitat cumi-cumi. Dari penelitian ini, dapat disimpulkan untuk penangkapan cumi-cumi lebih berpotensi dilakukan pada periode musim angin muson timur karena sesuai dengan preferensi habitatnya, yaitu pada bulan April hingga September. ================================================================================================ The Alas Strait is an area that has the potential as a fishing area in West Nusa Tenggara, especially for fishermen. Fishing in the Alas Strait area is dominated by demersal fish and squid. The squid fishing area is dominated by several species, especially Loligo edulis. According to Pralampita. 2002, from the results of observations obtained 7 types of squid dominated by squid tarusan (Loligo edulis) by 50%. Parameters that affect fishing grounds include depth, food availability, season, salinity, temperature, and sediment (Borzone, et al. 1999). In this study, the parameters that will be used are salinity, seawater temperature, bathymetry and currents as supporting parameters. The time limit in this study is divided into two, namely the east monsoon season (April to September) and the west monsoon season (October to March) in 2020. The method used is Kriging Interpolation in ArcGIS software. From the processing results, it was found that the salinity level in the east monsoon season was in the range of 32.2 – 33.1 psu. Meanwhile, in what season the west monsoon is in the range of 33.2 – 34.5 psu. Both salinity values are included in the habitat preferences of squid which are in the range of 27-37 psu. For temperature, it was found that the temperature level in the east monsoon season was in the range of 26.8° – 27.5°C. Meanwhile, the west monsoon season is in the range of 29.1° – 30.5°C. Only the east monsoon season with the seawater temperature value is included in the squid habitat preference which is in the range of 15° – 28° C. Meanwhile, for the west monsoon season, the distribution of squid habitat is not found due to the temperature range. higher than the temperature range for the squid habitat preference. From this study, it can be concluded that squid catching is more likely to be carried out during the east monsoon season because it is in accordance with their habitat preferences, namely April to September.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Habitat Cumi-Cumi, Suhu Air Laut, Salinitas, Kedalaman, Distribusi Spasial, Squid Habitat, Sea-Water Temperature, Salinity, Depth, Spatial Distribution.
Subjects: G Geography. Anthropology. Recreation > G Geography (General) > G70.217 Geospatial data
G Geography. Anthropology. Recreation > GC Oceanography
G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QH Biology > QH75 Nature conservation. Landscape protection. Biodiversity conservation. Endangered species and ecosystems (General). Habitat conservation. Ecosystem management. Conservation biology
Divisions: Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User: Salsha Afra' Kamilah
Date Deposited: 21 Aug 2021 07:56
Last Modified: 21 Aug 2021 07:56
URI: https://repository.its.ac.id/id/eprint/88158

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