scholarly journals Taxonomic Distinctness of Demersal Fishes of the California Current: Moving Beyond Simple Measures of Diversity for Marine Ecosystem-Based Management

PLoS ONE ◽  
2010 ◽  
Vol 5 (5) ◽  
pp. e10653 ◽  
Author(s):  
Nick Tolimieri ◽  
Marti J. Anderson
Keyword(s):  
Marine Ecosystem ◽  
California Current ◽  
Taxonomic Distinctness ◽  
Ecosystem Based Management ◽  
Demersal Fishes

Occurrence of demersal fishes in relation to near-bottom oxygen levels within the California Current large marine ecosystem

2015 ◽  
Vol 24 (2) ◽  
pp. 162-176 ◽  
Author(s):  
Aimee A. Keller ◽  
Lorenzo Ciannelli ◽  
W. Waldo Wakefield ◽  
Victor Simon ◽  
John A. Barth ◽  
...  
Keyword(s):  
Marine Ecosystem ◽  
California Current ◽  
Oxygen Levels ◽  
Large Marine Ecosystem ◽  
Bottom Oxygen ◽  
Demersal Fishes

scholarly journals Combining otolith microstructure and trace elemental analyses to infer the arrival of juvenile Pacific bluefin tuna in the California current ecosystem

2015 ◽  
Vol 72 (7) ◽  
pp. 2128-2138 ◽  
Author(s):  
Hannes Baumann ◽  
R. J. D. Wells ◽  
Jay R. Rooker ◽  
Saijin Zhang ◽  
Zofia Baumann ◽  
...  
Keyword(s):  
Marine Ecosystem ◽  
Fork Length ◽  
California Current ◽  
Bluefin Tuna ◽  
Otolith Microstructure ◽  
Pacific Bluefin Tuna ◽  
Thunnus Orientalis ◽  
Trace Elemental ◽  
Large Marine Ecosystem ◽  
Age Estimates

Abstract Juvenile Pacific bluefin tuna (PBT, Thunnus orientalis) are known to migrate from western Pacific spawning grounds to their eastern Pacific nursery and feeding grounds in the California Current Large Marine Ecosystem (CCLME), but the timing, durations, and fraction of the population that makes these migrations need to be better understood for improved management. To complement recent work focused on stable isotope and radiotracer approaches (“tracer toolbox”; Madigan et al., 2014) we explored the suitability of combining longitudinal analyses of otolith microstructure and trace elemental composition in age ∼1–2 PBT (n = 24, 66–76 cm curved fork length) for inferring the arrival of individuals in the CCLME. Element:Ca ratios in transverse otolith sections (9–12 rows, triplicate ablations from primordium to edge, ø50 μm) were quantified for eight elements: Li, Mg, Mn, Co, Cu, Zn, Sr, and Ba, which was followed by microstructure analysis to provide age estimates corresponding to each ablation spot. Age estimates from otoliths ranged from 328 to 498 d post-hatch. The combined elemental signatures of four elements (Ba, Mg, Co, Cu) showed a significant increase at the otolith edge in approximately half of the individuals (30–60 d before catch). Given the different oceanographic properties of oligotrophic open Pacific vs. high nutrient, upwelling CCLME waters, this signal is consistent with the entry of the fish into the CCLME, which was estimated to occur primarily in July after a transoceanic migration of ∼1.5–2.0 months. Our approach comprises a useful addition to the available tracer toolbox and can provide additional and complementary understanding of trans-Pacific migration patterns in PBT.

Marine ecosystem-based management in the Southern Cone of South America: Stakeholder perceptions and lessons for implementation

Marine Policy ◽  
2009 ◽  
Vol 33 (5) ◽  
pp. 801-806 ◽  
Author(s):  
Stefan Gelcich ◽  
Omar Defeo ◽  
Oscar Iribarne ◽  
Graciano Del Carpio ◽  
Random DuBois ◽  
...  
Keyword(s):  
South America ◽  
Marine Ecosystem ◽  
Southern Cone ◽  
Stakeholder Perceptions ◽  
Ecosystem Based Management

scholarly journals Climate vulnerability assessment for Pacific salmon and steelhead in the California Current Large Marine Ecosystem

PLoS ONE ◽  
2019 ◽  
Vol 14 (7) ◽  
pp. e0217711 ◽  
Author(s):  
Lisa G. Crozier ◽  
Michelle M. McClure ◽  
Tim Beechie ◽  
Steven J. Bograd ◽  
David A. Boughton ◽  
...  
Keyword(s):  
Vulnerability Assessment ◽  
Pacific Salmon ◽  
Marine Ecosystem ◽  
California Current ◽  
Large Marine Ecosystem ◽  
Climate Vulnerability
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