Skipjack Tuna (<i>Katsuwonus pelamis</i>) catch in relation to the Thermal and Chlorophyll-a Fronts during May – July in the Makassar Strait

Hidayat, Rachmat; Zainuddin, Mukti; Safruddin, Safruddin; Mallawa, Achmar; Farhum, St. Aisjah

doi:10.1088/1755-1315/253/1/012045

Cited by 22 publications

(22 citation statements)

References 14 publications

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“…Skipjack tuna can be clearly identified in waters with an optimum SSC concentration of 0.2 mg m -3 (Zainuddin et al 2017). Nevertheless, SSC does not directly affect skipjack tuna's distribution (Hidayat et al 2019b). The relation of SSC and skipjack tuna is more dependent on the indicators of skipjack tuna's feed, namely small pelagic fish such as anchovies (Stolephorus sp.)…”

Section: Discussionmentioning

confidence: 99%

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Mapping spatial-temporal skipjack tuna habitat as a reference for Fish Aggregating Devices (FADs) settings in Makassar Strait, Indonesia

et al. 2021

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Abstract. Hidayat R, Zainuddin M, Mallawa A, Mustapha MA, Putri ARS. 2021. Mapping spatial-temporal skipjack tuna habitat as a reference for Fish Aggregating Devices (FADs) settings in Makassar Strait, Indonesia. Biodiversitas 22: 3637-3647. Skipjack tuna (Katsuwonus pelamis) has a high economic value in the international market. Catching skipjack tuna using fish aggregating devices (FADs) without knowing its habitat characteristics can damage the ecosystem. This study aimed to determine suitable fishing areas for setting skipjack’s FADs. The data used included that on catch, sea surface temperature (SST), and sea surface chlorophyll-a (SSC) in the Makassar Strait obtained for 2017-2019. The generalized additive model (GAM) and empirical cumulative distribution function (ECDF) analyses were used to investigate the skipjack’s tuna habitat. A pelagic habitat index (PHI), with PHI > 75%, was applied to determine suitable FAD positions. The gravity center of the skipjack tuna habitat for ten months (January-October 2020) was calculated to validate the model’s results. The results showed that the optimum SST range was from 28.78°C to 31.25°C, while the SSC from 0.18 to 0.28 mg m-3. The best skipjack habitats in the southern Makassar Strait are criterion 4 (PHI > 90%) and criterion 3 (PHI = 85-90%), having a relatively high consistency of the average PHI values. These results can help determine the optimal positions for setting FADs to benefit the global management and sustainable development of skipjack tuna fisheries.

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Section: Discussionmentioning

confidence: 99%

“…chlorophyll-a front area (Hidayat et al 2019a). These events are mainly related to SSC and SST (Zainuddin et al 2019) and corroborate our argument for determining the habitat of skipjack tuna using these two parameters.…”

Section: Discussionmentioning

confidence: 99%

Mapping spatial-temporal skipjack tuna habitat as a reference for Fish Aggregating Devices (FADs) settings in Makassar Strait, Indonesia

et al. 2021

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“…Adanya pergerakan massa air secara musiman dan tahunan yang telah mempengaruhi kondisi oseanografi, mengungkapkan faktanya bahwa pergerakan massa air ini mempengaruhi pola migrasi pergerakan ikan-ikan migratory (high migratory species) (Safruddin dkk, 2014;Zainuddin et al, 2017;Hidayat et al, 2019;Safruddin et al, 2019).…”

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Tujuan penelitian ini adalah memetakan kondisi oseanografi daerah penangkapan dan, berbasis itu, menentukan kondisi oseanografi yang lebih disukai oleh ikan cakalang di Wilayah Pengelolaan Perikanan (WPP) 713. Kondisi yang dimaksud dalam hal ini yaitu Suhu Permukaan Laut (SPL) dan konsentrasi klorofil-a. Data primer, yaitu posisi penangkapan dan hasil tangkapan ikan per trip, didapatkan dengan mengikuti operasi penangkapan ikan yang menggunakan alat tangkap pole and line (di Teluk Bone dan Laut Flores), dan purse seine (di Selat Makassar). Data sekunder, yaitu sebaran SPL dan densitas klorofil-a, didapatkan dari citra satelit oseanografi. Berdasarkan peta yang dihasilkan terlihat bahwa pada bulan Januari s.d Agustus 2019, ikan cakalang cenderung menempati ruang di lepas pantai (off shore) pada suhu permukaan laut sekitar 29,0-29,5 o C dengan sebaran klorofil-a antara 0,1 s.d 0,15 mg.m 3 .

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“…The North Indian Ocean is devoid of strong quasi-stationary fronts save for river plume fronts associated with the Ganges-Brahmaputra and Irrawaddy freshwater outflows/discharges (Belkin and Cornillon, 2007;Belkin, Cornillon, and Sherman, 2009). Nonetheless, numerous papers by Indian, Pakistani, and Indonesian researchers are dedicated to fronts and their effects on fisheries, particularly regarding Potential Fishing Zones (PFZ; Abdullah et al, 2017;Swetha et al, 2017;Sarma et al, 2018;Chakraborty et al, 2019;Hidayat et al, 2019;Jishad et al, 2019;Francis et al, 2020;Suhadha et al, 2020;Zainuddin et al, 2020), with tuna being the main target (Abdullah et al, 2017;Hidayat et al, 2019;Zainuddin et al, 2020).…”

Section: Table 1 Remote Sensing Of Fronts In Marine Ecology and Fishmentioning

confidence: 99%

Remote Sensing of Ocean Fronts in Marine Ecology and Fisheries

Belkin¹

2020

Preprint

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This paper provides a concise review of remote sensing of ocean fronts and its applications in marine ecology and fisheries, with a particular focus on the most popular front detection algorithms/techniques: Canny (1986), Cayula and Cornillon (1990, 1992, 1995), Miller (2004, 2009), Shimada et al. (2005), Belkin and O’Reilly (2009), and Nieto et al. (2012). A case is made for feature-based approach in marine ecology and fisheries that emphasizes fronts as major structural and circulation features of the ocean realm that play key roles in various aspects of marine ecology.

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Skipjack Tuna (Katsuwonus pelamis) catch in relation to the Thermal and Chlorophyll-a Fronts during May – July in the Makassar Strait

Cited by 22 publications

References 14 publications

Mapping spatial-temporal skipjack tuna habitat as a reference for Fish Aggregating Devices (FADs) settings in Makassar Strait, Indonesia

Mapping spatial-temporal skipjack tuna habitat as a reference for Fish Aggregating Devices (FADs) settings in Makassar Strait, Indonesia

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Remote Sensing of Ocean Fronts in Marine Ecology and Fisheries

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