Bio/Optical Provinces of the Northeast Pacific Ocean in Summer: A provisional Analysis Combining Remotely Sensed Ocean Color with Irradiance and Chlorophyll-A Fluorescence Profiles

1988 ◽  
Author(s):  
J. Mueller ◽  
R. E. Lange
Keyword(s):  
Pacific Ocean ◽  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Ocean Color ◽  
Remotely Sensed ◽  
Northeast Pacific ◽  
Northeast Pacific Ocean

Observations On Subsurface Distributions Of Chlorophyll a And Phytoplankton Carbon In The Northeast Pacific Ocean

1974 ◽  
Vol 31 (12) ◽  
pp. 1919-1925 ◽  
Author(s):  
Louis A. Hobson ◽  
Dawn E. Ketcham
Keyword(s):  
Pacific Ocean ◽  
Chlorophyll A ◽  
Net Photosynthesis ◽  
Vancouver Island ◽  
Taxonomic Composition ◽  
Northeast Pacific ◽  
Northeast Pacific Ocean

Measurements of subsurface concentrations of chlorophyll a and phytoplankton carbon were made between Vancouver Island and Hawaii during summer 1971. In general, chlorophyll a concentrations increased and concentrations of phytoplankton carbon decreased from 10 m to depths varying between 100 and 150 m. These distributions indicated that cellular contents of chlorophyll a increased as cells were exposed to diminishing daily irradiations. Daily compensation irradiations for net photosynthesis of subsurface phytoplankton in the northeast Pacific Ocean were estimated in summer 1973. Values ranged between 0.5 and 0.7 cal cm−2 but variability among replicates was large giving a range of 0 and 1.2 cal cm−2. It was not possible to correlate compensation irradiations with taxonomic composition of phytoplankton populations.

Linking phytoplankton phenology to salmon productivity along a north–south gradient in the Northeast Pacific Ocean

2015 ◽  
Vol 72 (5) ◽  
pp. 697-708 ◽  
Author(s):  
Michael J. Malick ◽  
Sean P. Cox ◽  
Franz J. Mueter ◽  
Randall M. Peterman
Keyword(s):  
Pacific Ocean ◽  
Chlorophyll A ◽  
Spring Bloom ◽  
Phytoplankton Bloom ◽  
Regional Scale ◽  
Spatial Covariance ◽  
Covariance Functions ◽  
Northeast Pacific ◽  
Lower Productivity ◽  
Northeast Pacific Ocean

We investigated spatial and temporal components of phytoplankton dynamics in the Northeast Pacific Ocean to better understand the mechanisms linking biological oceanographic conditions to productivity of 27 pink salmon (Oncorhynchus gorbuscha) stocks. Specifically, we used spatial covariance functions in combination with multistock spawner–recruit analyses to model relationships among satellite-derived chlorophyll a concentrations, initiation date of the spring phytoplankton bloom, and salmon productivity. For all variables, positive spatial covariation was strongest at the regional scale (0–800 km) with no covariation beyond 1500 km. Spring bloom timing was significantly correlated with salmon productivity for both northern (Alaska) and southern (British Columbia) populations, although the correlations were opposite in sign. An early spring bloom was associated with higher productivity for northern populations and lower productivity for southern populations. Furthermore, the spring bloom initiation date was always a better predictor of salmon productivity than mean chlorophyll a concentration. Our results suggest that changes in spring bloom timing resulting from natural climate variability or anthropogenic climate change could potentially cause latitudinal shifts in salmon productivity.

scholarly journals Thalassiosira spp. community composition shifts in response to chemical and physical forcing in the northeast Pacific Ocean

2013 ◽  
Vol 4 ◽  
Author(s):  
P. Dreux Chappell ◽  
LeeAnn P. Whitney ◽  
Traci L. Haddock ◽  
Susanne Menden-Deuer ◽  
Eric G. Roy ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Community Composition ◽  
Physical Forcing ◽  
Northeast Pacific ◽  
Northeast Pacific Ocean

How important are coastal fronts to albacore tuna (Thunnus alalunga) habitat in the Northeast Pacific Ocean?

2017 ◽  
Vol 150 ◽  
pp. 62-71 ◽  
Author(s):  
Karen Nieto ◽  
Yi Xu ◽  
Steven L.H. Teo ◽  
Sam McClatchie ◽  
John Holmes
Keyword(s):  
Pacific Ocean ◽  
Northeast Pacific ◽  
Albacore Tuna ◽  
Thunnus Alalunga ◽  
Northeast Pacific Ocean

scholarly journals A 20-Year Hydroacoustic Time Series of Seismic and Volcanic Events in the Northeast Pacific Ocean

Oceanography ◽  
2011 ◽  
Vol 24 (3) ◽  
pp. 280-293 ◽  
Author(s):  
Robert Dziak ◽  
Stephen Hammond ◽  
Christopher Fox
Keyword(s):  
Time Series ◽  
Pacific Ocean ◽  
Northeast Pacific ◽  
Volcanic Events ◽  
Northeast Pacific Ocean
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