Spatial analysis of yellowfin tuna (Thunnus albacares) catch rate and its relation to El Niño and La Niña events in the eastern tropical Pacific

Anda-Montañez, Juan Antonio De; Amador-Buenrostro, Alberto; Martı́nez-Aguilar, Susana; Muhlia‐Almazán, Adriana

doi:10.1016/j.dsr2.2004.05.013

Cited by 9 publications

(4 citation statements)

References 15 publications

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“…These two factors are strongly related with ecosystems primary production, by influencing the availability of food [36, 39, 40]. This result is consistent with other studies that had already suggested that Yellowfin tuna is highly influenced by the primary production [39,51,52].…”

Section: Discussionsupporting

confidence: 89%

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Abundance and Distribution Patterns of Thunnus albacares in Isla del Coco National Park through Predictive Habitat Suitability Models

et al. 2016

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Information on the distribution and habitat preferences of ecologically and commercially important species is essential for their management and protection. This is especially important as climate change, pollution, and overfishing change the structure and functioning of pelagic ecosystems. In this study, we used Bayesian hierarchical spatial-temporal models to map the Essential Fish Habitats of the Yellowfin tuna (Thunnus albacares) in the waters around Isla del Coco National Park, Pacific Costa Rica, based on independent underwater observations from 1993 to 2013. We assessed if observed changes in the distribution and abundance of this species are related with habitat characteristics, fishing intensity or more extreme climatic events, including the El Niño Southern Oscillation, and changes on the average sea surface temperature. Yellowfin tuna showed a decreasing abundance trend in the sampled period, whereas higher abundances were found in shallow and warmer waters, with high concentration of chlorophyll-a, and in surrounding seamounts. In addition, El Niño Southern Oscillation events did not seem to affect Yellowfin tuna distribution and abundance. Understanding the habitat preferences of this species, using approaches as the one developed here, may help design integrated programs for more efficient management of vulnerable species.

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Section: Discussionsupporting

confidence: 89%

“…Chl- a concentration was included in the analysis as an index of primary production of an ecosystem [39, 40]. Several studies have showed that primary production is an important factor that drives the Yellowfin tuna abundance and distribution [18, 41].…”

Section: Methodsmentioning

confidence: 99%

Abundance and Distribution Patterns of Thunnus albacares in Isla del Coco National Park through Predictive Habitat Suitability Models

et al. 2016

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“…Jika Nilai ONI melebihi 0,5 berarti terjadi El Niño, dan sebaliknya jika nilai ONI lebih kecil dari -0,5 berarti terjadi La Niña (ditunjukkan dengan garis putus-putus pada Gambar 4). Dalam bidang perikanan, dampak dari El Niño dan La Niña ini sudah sangat dirasakan terutama berhubungan dengan tingkat kesuburan perairan (Susanto & Marra, 2005) dan pola migrasi ikan (Anda-Montañez et al, 2004). Untuk perikanan budidaya, Baba et al (2009) melakukan kajian pada budidaya scallop dan menemukan bahwa terjadinya El Niño dapat memengaruhi rendahnya kelimpahan spat yang tersedia, sedangkan La Niña menunjukkan pengaruh yang sangat signifikan terhadap reproduksi dan pertumbuhan dari scallop.…”

Section: Kondisi Iklim Global (El Niño Dan La Niña)unclassified

PENGARUH IKLIM TERHADAP MUSIM TANAM RUMPUT LAUT, Kappaphycus alvarezii DI TELUK GERUPUK KABUPATEN LOMBOK TENGAH, NUSA TENGGARA BARAT

Radiarta

Erlania

Rusman³

2016

Jurnal Riset Akuakultur

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ABSTRAKRumput laut merupakan komoditas unggulan perikanan budidaya di Indonesia. Pengembangan kawasan budidaya rumput laut dapat dipengaruhi oleh kondisi lingkungan biofisik perairan dan kondisi iklim. Salah satu faktor pembatas dalam budidaya rumput laut adalah musim tanam. Tujuan dari penelitian ini adalah untuk mengkaji pola musim tanam rumput laut yang dihubungkan dengan perubahan iklim yang terjadi di Teluk Gerupuk Kabupaten Lombok Tengah, Nusa Tenggara Barat. Data primer yang dikumpulkan dalam penelitian ini meliputi data keragaan budidaya rumput laut dan pola musim tanam. Data sekunder diperoleh dari berbagai instansi terkait meliputi Badan Meteorologi Klimatologi dan Geofisika, NOAA Center for Weather and Climate Prediction, dan Dinas Kelautan dan Perikanan. Data yang terkumpul dianalisis dan dibahas secara deskriptif yang disertai dengan gambar. Hasil dari penelitian ini menunjukkan bahwa pr oduktivitas lahan peng embangan r umput laut sang at dipengaruhi oleh kondisi iklim. Adanya perubahan iklim baik nasional maupun global (El Niño dan La Niña) sangat memengaruhi pola musim tanam rumput laut di Teluk Gerupuk. Musim tanam produktif umumnya terjadi pada bulan di mana curah hujan rendah (musim kemarau) dan suhu udara juga rendah (24 o C-27 o C). KATA KUNCI: perubahan iklim, musim tanam, rumput laut, Lombok Tengah ABSTRACT:Impact

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“…In fact, the CRTD and nearby regions are some of the largest tuna catch areas in the world [24]. The high biological productivity in the CRTD is the major reason for the high-density patches of the yellow tuna [25].…”

Section: Introductionmentioning

confidence: 99%

Ocean Variability in the Costa Rica Thermal Dome Region from 2012 to 2021

Shi,

Wang

2024

Remote Sensing

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Satellite ocean color and sea surface temperature (SST) observations from 2012 to 2021 and sea surface salinity (SSS) measurements from the Soil Moisture Active Passive (SMAP) mission from 2015 to 2021 are used to characterize and quantify the seasonal and interannual variability in the physical, optical, and biological sea surface features in the Costa Rica Thermal Dome (CRTD) region. High-resolution climatology and the seasonal variability in SST, SSS, and ocean color properties are produced. Chlorophyll-a (Chl-a) concentration, SST, and SSS show these three properties are linked with similar spatial patterns and seasonal variations, i.e., elevated Chl-a concentrations, match the depressed SST and increased SSS and vice versa. This reflects that the physical driving force is the same for these three ocean properties and implies that nutrient supply associated with the physical processes is the major driver for the seasonal biological variability. The interannual changes in Chl-a, SST, and SSS also show that these three ocean properties are consistent among themselves. The positive (negative) Chl-a anomaly generally occurs with negative (positive) SST anomaly and enhanced (reduced) SSS. The in situ measurements evidently show that the subsurface ocean dynamics in the upper 100 m controls the sea surface variability for Chl-a, SST, and SSS. We report that no significant enhancement of Chl-a is observed in the CRTD region during the central Pacific (CP)-type 2020–2021 La Niña event, while Chl-a changes are significant in the other three of four ENSO events between 2012 and 2021. Furthermore, the difference in Chl-a variability driven by the CP-type ENSO and eastern Pacific (EP)-type ENSO is further discussed.

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Spatial analysis of yellowfin tuna (Thunnus albacares) catch rate and its relation to El Niño and La Niña events in the eastern tropical Pacific

Cited by 9 publications

References 15 publications

Abundance and Distribution Patterns of Thunnus albacares in Isla del Coco National Park through Predictive Habitat Suitability Models

Abundance and Distribution Patterns of Thunnus albacares in Isla del Coco National Park through Predictive Habitat Suitability Models

PENGARUH IKLIM TERHADAP MUSIM TANAM RUMPUT LAUT, Kappaphycus alvarezii DI TELUK GERUPUK KABUPATEN LOMBOK TENGAH, NUSA TENGGARA BARAT

Ocean Variability in the Costa Rica Thermal Dome Region from 2012 to 2021

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