Book ChapterDOI
Bo QiuUniversity of Hawaii at Manoa
- pp 1413-1425
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187Citations
TL;DR: In this paper, the importance of euphausiids in marine food webs throughout the world’s oceans has been discussed, and they are potentially important indicator species for detecting and understanding climate change effects.
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Abstract:Salps compete with krill for phytoplankton } in poor sea ice years salp numbers are increased and krill recruitment is reduced. Further north in their range, E. superba abundance is dependent on the transport of krill in the ocean currents as well as Suctuations in the strength of particular cohorts. Given the importance of euphausiids in marine food webs throughout the world’s oceans, they are potentially important indicator species for detecting and understanding climate change effects. Changes in ocean circulation or environmental regimes will be reSected in changes in growth, development, recruitment success, and distribution. These effects may be most notable at the extremes of their distribution where any change in the pattern of variation will result in major changes in food web structure. Given their signiRcance as prey to many commercially exploited species, this may also have a major impact on harvesting activities. A greater understanding of the large-scale biology of the euphausiids and the factors generating the observed variability is crucial. Obtaining good long-term and large-scale biological and physical data will be fundamental to this process.
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Citations
Journal Article•
DOIThe Kuroshio Extension Bifurcation Region: A pelagic hotspot for juvenile loggerhead sea turtles
Jeffrey J. Polovina, +5 moreDole Food Company,Joint Institute for Marine and Atmospheric Research,National Oceanic and Atmospheric Administration
- 01 Feb
2006-
Deep-sea Research Part Ii-topical Studie...
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Abstract: Satellite telemetry of 43 juvenile loggerhead sea turtles (Caretta caretta) in the western North Pacific together with satellite-remotely sensed oceanographic data identified the Kuroshio Extension Bifurcation Region (KEBR) as a forage hotspot for these turtles. In the KEBR juvenile loggerheads resided in Kuroshio Extension Current (KEC) meanders and the associated anti-cyclonic (warm core) and cyclonic (cold core) eddies during the fall, winter, and spring when the KEC water contains high surface chlorophyll. Turtles often remained at a specific feature for several months. However, in the summer when the KEC waters become vertically stratified and surface chlorophyll levels are low, the turtles moved north up to 600 km from the main axis of KEC to the Transition Zone Chlorophyll Front (TZCF). In some instances, the loggerheads swam against geostrophic currents, and seasonally all turtles moved north and south across the strong zonal flow. Loggerhead turtles traveling westward in the KEBR had their directed westward movement reduced 50% by the opposing current, while those traveling eastward exhibited an increase in directed zonal movement. It appears, therefore, that these relatively weak-swimming juvenile loggerheads are not passive drifters in a major ocean current but are able to move east, west, north, and south through this very energetic and complex habitat. These results indicate that oceanic regions, specifically the KEBR, represent an important juvenile forage habitat for this threatened species. Interannual and decadal changes in productivity of the KEBR may be important to the species’s population dynamics. Further, conservation efforts should focus on identifying and reducing threats to the survival of loggerhead turtles in the KEBR. r 2006 Elsevier Ltd. All rights reserved.
172
•Journal Article•
DOIThe Pliocene to recent history of the Kuroshio and Tsushima Currents: a multi-proxy approach
Stephen J. Gallagher, +5 moreUniversity of Melbourne,Shizuoka University,Tohoku University,National Institute of Advanced Industrial Science and Technology,Hokkaido University
- 27 Jun
2015-
Progress in Earth and Planetary Science
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TL;DR: Foraminiferal proxy data suggests eastward deflection of the Kuroshio Current from its present path at 24 °N into the Pacific Ocean due to East Taiwan Channel restriction during the Last Glacial Maximum.
131
•Journal Article•
DOIAn overview of the Oyashio ecosystem
Yasunori SakuraiHokkaido University
- 01 Nov
2007-
Deep-sea Research Part Ii-topical Studie...
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TL;DR: The Oyashio shelf region and the seasonally ice-covered areas north of Hokkaido are highly productive, supporting a wide range of species including marine mammals, seabirds and commercially important species in the western subarctic Pacific as discussed by the authors.
109
•Journal Article•
DOIDissolved and labile particulate Zr, Hf, Nb, Ta, Mo and W in the western North Pacific Ocean
M. Lutfi Firdaus, +4 moreKyoto University
- 01 Apr
2008-
Journal of Oceanography
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TL;DR: In this paper, a portion of seawater for dissolved species (D) was passed through a 0.2 µm Nuclepore filter and acidified to pH 2.2 with HCl and HF.
90
Journal Article•
DOISediment core record of global fallout and Bikini close-in fallout Pu in Sagami Bay, western Northwest Pacific margin
Jian Zheng, +1 moreNational Institute of Radiological Sciences
- 01 Jul
2004-
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TL;DR: To the best of the knowledge, this is the first report that Pu contamination, which originated from Bikini and Enewetak nuclear weapon test series in the 1950s, has extended westwards as far as the Japanese coast.
83
References
•Book
Regional Oceanography: An Introduction
Matthias Tomczak, +1 more
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TL;DR: In this article, what drives the ocean currents? temperature, salinity, density and the oceanic pressure field the Coriolis force, geostropy, Rossby waves and the westwood intensification Ekman layer transports, Ekman pumping and the Sverdrup balance water mass formation, subduction and oceanic heat budget Antarctic oceanography Arctic oceanography.
1,261
•Book
Descriptive Physical Oceanography : An Introduction
George L. Pickard
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TL;DR: In this paper, the authors describe ocean dimensions, shapes and bottom materials Physical properties of sea-water Typical distributions of water characteristics in the oceans Water, salt and heat budgets of the oceans Instruments and methods Circulation and water masses of oceans Coastal oceanography Some directions for future work Appendix Bibliography Index.
925
Beginning of the Kuroshio
H. Nitani
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592
Journal Article•
DOIAnnual and Interannual Variability in the Kuroshio Current System
Keisuke Mizuno, +1 moreScripps Institution of Oceanography
- 01 Oct
1983-
Journal of Physical Oceanography
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TL;DR: In this article, a composite of the paths of the Kuroshio (i.e., the 12°C isotherm) from the individual seasonal maps, and the total variance map, finds nodes (minima) and anti-nodes (e.g., maxima) of variability to have existed along the mean Kuroshia path.
315
Journal Article•
DOIVariations of Current Path, Velocity, and Volume Transport of the Kuroshio in Relation with the Large Meander
Masaki KawabeUniversity of Tokyo
- 01 Dec
1995-
Journal of Physical Oceanography
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TL;DR: In this paper, the variations of the Kuroshio current path and their relations with current velocity, volume transport, and upstream position were examined using sea level data, and it was shown that the formation and decay of the large meander are associated with the velocity and position of the kokara Strait south of Kyushu.
302
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