Catch per Unit Effort Dynamic of Yellowfin Tuna Related to Sea Surface Temperature and Chlorophyll in Southern Indonesia

Wiryawan, Budy; Loneragan, N.R.; Mardhiah, Ulfah; Kleinertz, Sonja; Wahyuningrum, Prihatin Ika; Pingkan, Jessica; Wildan,; Timur, Putra Satria; Duggan, Deirdre; Yulianto, Irfan

doi:10.3390/fishes5030028

Cited by 20 publications

(17 citation statements)

References 31 publications

(39 reference statements)

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“…The study of Zainuddin (2011) provides almost the same picture, namely SST and chlorophyll-a in Bone Bay were associated with skipjack tuna fishing that occurs in the east monsoon. Wiryawan et al (2020) stated that there is a relationship between seasonal and annual tuna abundance patterns that are influenced by SST and chlorophyll-a and are associated with upwelling and El Nino events.…”

Section: Discussionmentioning

confidence: 99%

Skipjack Tuna Fishing Season and Its Relationship With Oceanographic Conditions in Palabuhanratu Waters, West Java

Nurani

Wahyuningrum²,

Iqbal³

et al. 2022

MABJ

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Skipjack tuna (Katsuwonus pelamis) is the main catch species in Indonesian Palabuhanratu waters. The dynamics of skipjack fishing areas are influenced by oceanographic parameters such as sea surface temperature and chlorophyll-a concentration. This study aims to predict the skipjack fishing season, analyze the dynamics of oceanographic conditions, especially the distribution of sea surface temperature and the distribution of chlorophyll-a, and determine the relationship between skipjack fishing season and the dynamics of the distribution of sea surface temperature and the distribution of chlorophyll-a in the waters of Palabuhanratu, West Java. Catch per unit effort analysis was used to determine the fishing season index, while the dynamics of sea surface temperature and distribution of chlorophyll-a were analyzed from MODIS image data. The results showed that skipjack fishing season in Palabuhanratu waters was from July to November. Monthly sea surface temperatures range from 26-30℃ with an average value of 29℃. The distribution value of chlorophyll-a concentration ranged from 0.09 mg/m3 to 0.51 mg/m3 with an average value of 0.23 mg/m3. Skipjack tuna production tends to increase when sea surface temperatures are low and chlorophyll-a concentrations increase.

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Section: Discussionmentioning

confidence: 99%

Skipjack Tuna Fishing Season and Its Relationship With Oceanographic Conditions in Palabuhanratu Waters, West Java

Nurani

Wahyuningrum²,

Iqbal³

et al. 2022

MABJ

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“…Namun, pada saat upaya penangkapan telah melebihi dari potensi lestari dari sumberdaya ikan maka tren dari produktivitas suatu perikanan akan mengalami penurunan. Faktor-faktor yang dapat mempengaruhi nilai CPUE meliputi jumlah upaya penangkapan, lama waktu melaut, ukuran kapal, bobot total hasil tangkapan, jumlah individu hasil tangkapan, suhu permukaan laut, dan kandungan klorofil-a (Wiryawan et al 2020)…”

Section: Pembahasanunclassified

Pemetaan Spasial Dan Temporal Status Pemanfaatan Ikan Kerapu Di Perairan Teluk Saleh, Nusa Tenggara Barat

Darmawan¹,

Wiryawan²,

Kleinertz

et al. 2022

Jurnal Marfis

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The Saleh Bay is one of the bays in West Nusa Tenggara utilized as the grouper fishing ground. However, in the previous spawning potential ratio study, some grouper species have been overexploited in Saleh Bay. This study aimed to estimate the status of grouper utilization with a catch per unit effort (CPUE) approach and the spatio-temporal fishing intensity of grouper in fishing grounds in Saleh Bay. Data were gathered using the fish landing data and geo-reference of fishing ground grouper in Saleh Bay. This study used several methods: descriptive analysis, catch per unit effort, and spatial-temporal analysis. The result showed that the catch unit effort positively impacts production, with the increasing trend of grouper fishing in Saleh Bay waters. The CPUE value in 2016 was 2.82 kg/trip, while in 2020, it increased to 3.99 kg/trip. Spatially and temporally, fishers caught grouper around small islands such as Liang Island, Dempu Island, Lipan Island, Takat Nusa Pudu, and Rakit Island. The highest intensity of grouper fishing around the marine protected area, namely Rakit Island, Liang Island, and Ngali Island. Keywords: catch per unit effort, fishing ground, grouper, Saleh Bay

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“…We chose the GAM model because it did not relate to the normality of the data used, so it is easier to use for the data analysis. GAM with Gaussian distribution was applied to determine the effect of environmental factors on skipjack tuna distribution (Zainuddin et al, 2019;Wiryawan et al, 2020). The response variable µi (fish number of skipjack tuna catch) and the predictor variables (SST and Chl-a) can be formulated as follows:…”

Section: Generalized Additive Model (Gam)mentioning

confidence: 99%

IMPACT OF INCREASING SEA SURFACE TEMPERATURE ON POTENTIAL FISHING ZONE OF SKIPJACK TUNA Katsuwonus pelamis IN MAKASSAR STRAIT

Abudarda

Zainuddin²,

Safruddin³

2021

J. Ilmu dan Teknologi Kelautan Tropis

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Makassar Strait plays a vital role as one of the skipjack tuna fishing grounds in Indonesia. This study aimed to detect the skipjack tuna preference of sea surface temperature (SST) and chlorophyll-a (Chl-a) in Makassar Strait and to map out the possible shifting potential fishing zone (PFZ) of skipjack tuna by simulating sea surface temperature increase. We analyzed the skipjack catch data from July to November 2020, and we added the previous data in June, July, August, October, and December 2019 in the same study area. We analyzed together with satellite imagery data set of SST and Chl-a using GAM. We used three scenarios for the SST increase model simulation, which are 0.25, 0.5, and 1℃. The results showed that skipjack tuna is relatively high in SST ranging from 28.3 to 30.4°C and Chl-a ranging from 0.18 to 0.28 mg/m3. The PFZ based on sea surface temperature simulation showed that PFZ area form in the northern part shifting to the southern part of Makassar Strait based on the increasing sea surface temperature simulation visible in September, which shifted from 0.017-5.421⁰S to 2.923-6.802⁰S and October shifted from 0.017-6.802⁰S to 5.007-6.802⁰S. Knowing the shifting of the potential fishing zone of skipjack tuna could be an important step toward fishing operation and management for skipjack tuna resource management in Makassar Strait.

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Catch per Unit Effort Dynamic of Yellowfin Tuna Related to Sea Surface Temperature and Chlorophyll in Southern Indonesia

Cited by 20 publications

References 31 publications

Skipjack Tuna Fishing Season and Its Relationship With Oceanographic Conditions in Palabuhanratu Waters, West Java

Skipjack Tuna Fishing Season and Its Relationship With Oceanographic Conditions in Palabuhanratu Waters, West Java

Pemetaan Spasial Dan Temporal Status Pemanfaatan Ikan Kerapu Di Perairan Teluk Saleh, Nusa Tenggara Barat

IMPACT OF INCREASING SEA SURFACE TEMPERATURE ON POTENTIAL FISHING ZONE OF SKIPJACK TUNA Katsuwonus pelamis IN MAKASSAR STRAIT

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