Response of Deep-Sea Benthic Foraminifera to Paleoproductivity Changes on the Shatsky Rise in the Northwestern Pacific Ocean Over the Last 187 Kyr

Ohkushi, Ken’ichi; Hata, Motoko; Nemoto, Naoki

doi:10.2517/2017pr027

Cited by 6 publications

(3 citation statements)

References 62 publications

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“…delicata, which in the GT become more abundant when oxygen levels drop (García-Gallardo et al, 2020). C. reniforme has been encountered under the influence of high organic carbon export to the seafloor and high productivity in the NW Pacific Ocean (Ohkushi et al, 2018).…”

Section: Benthic Foraminifera As Proxies For Bottom Oxygenation In Th...mentioning

confidence: 99%

Paleoceanography of the Gulf of Tehuantepec during the Medieval Warm Period

García-Gallardo

Almaraz-Ruiz

2022

Marine Micropaleontology

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Section: Benthic Foraminifera As Proxies For Bottom Oxygenation In Th...mentioning

confidence: 99%

Paleoceanography of the Gulf of Tehuantepec during the Medieval Warm Period

García-Gallardo

Almaraz-Ruiz

2022

Marine Micropaleontology

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“…A. weddellensis and E. exigua belong to a group of phytodetritus-feeding species, whose opportunistic behavior is an adaptation to a fluctuating food supply that allows rapid growth and reproduction in the presence of phytodetritus. However, A. weddellensis prefers a better food supply than E. exigua (Altenbach et al, 1999;Ohkushi et al, 2018;Takata et al, 2019). Species of the genus Cassidulina have generally been linked to fairly high productivity and a continuous food supply (Mackensen et al, 1995;Ohkushi et al, 2018;Schmiedl et al, 1997).…”

Section: Benthic Foraminiferamentioning

confidence: 99%

“…However, A. weddellensis prefers a better food supply than E. exigua (Altenbach et al, 1999;Ohkushi et al, 2018;Takata et al, 2019). Species of the genus Cassidulina have generally been linked to fairly high productivity and a continuous food supply (Mackensen et al, 1995;Ohkushi et al, 2018;Schmiedl et al, 1997).…”

Section: Benthic Foraminiferamentioning

confidence: 99%

Evidence of Southern Ocean influence into the far Northwest Pacific (Northern Emperor Rise) since the Bølling–Allerød warming

Gorbarenko

Shi

Liu

et al. 2020

Global and Planetary Change

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The role of the Southern Ocean in releasing CO 2 (sequestered in the global ocean during the Last Glacial Maximum) into the atmosphere during deglaciation is an important topic for investigation of Earth's climate. Changes in global deep water circulation associated with upwelling of Circumpolar Deep Water (CDW) around Antarctica may have played a part in the CO 2 release, but remain poorly studied. The potential response of the Pacific Ocean, including the North Pacific, to upwelling of CDW with its vast reservoir of CO 2 remains unresolved. Here we combine productivity proxies, oxygen and carbon isotope values in benthic and planktic foraminifera, data on the occurrence and abundance of ice-rafted debris, and benthic foraminiferal species composition in three sediment cores with published data for three cores from the Northern Emperor Rise for the Last Glacial Maximum, deglaciation and Holocene in order to elucidate the North Pacific role in CO 2 redistribution in the past. Age models of the cores are based on radiocarbon data calibrated by 14 C atmospheric plateau tuning. The calcium carbonate content in all cores increased abruptly around 14.5 ka, indicating an influx of relatively young water enriched in carbonate ion, oxygen and nutrients, and sourced in the Southern Oceans. A decrease in the extent of sea ice at the NER area during early deglaciation is reflected in sharp increases in the productivity of siliceous phytoplankton near the onset of Bølling/Allerød warming, possibly facilitated by the influx of Southern Ocean-sourced nutrient-rich waters.

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North Pacific deep-sea ecosystem responses reflect post-glacial switch to pulsed export productivity, deoxygenation, and destratification

Belanger

sharon

et al. 2020

Deep Sea Research Part I: Oceanographic Research Papers

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Response of Deep-Sea Benthic Foraminifera to Paleoproductivity Changes on the Shatsky Rise in the Northwestern Pacific Ocean Over the Last 187 Kyr

Cited by 6 publications

References 62 publications

Paleoceanography of the Gulf of Tehuantepec during the Medieval Warm Period

Paleoceanography of the Gulf of Tehuantepec during the Medieval Warm Period

Evidence of Southern Ocean influence into the far Northwest Pacific (Northern Emperor Rise) since the Bølling–Allerød warming

North Pacific deep-sea ecosystem responses reflect post-glacial switch to pulsed export productivity, deoxygenation, and destratification

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