Faculty Opinions recommendation of Increased stratification and decreased lower trophic level productivity in the Oyashio region of the North Pacific: a 30-year retrospective study.

2005 ◽  
Author(s):  
William Li
Keyword(s):  
Retrospective Study ◽  
Trophic Level ◽  
North Pacific ◽  
Oyashio Region ◽  
Lower Trophic Level ◽  
The North ◽  
The North Pacific

scholarly journals NEMURO—a lower trophic level model for the North Pacific marine ecosystem

2007 ◽  
Vol 202 (1-2) ◽  
pp. 12-25 ◽  
Author(s):  
Michio J. Kishi ◽  
Makoto Kashiwai ◽  
Daniel M. Ware ◽  
Bernard A. Megrey ◽  
David L. Eslinger ◽  
...  
Keyword(s):  
Trophic Level ◽  
North Pacific ◽  
Marine Ecosystem ◽  
Lower Trophic Level ◽  
The North ◽  
Level Model ◽  
The North Pacific

Trophic relationships of albatrosses associated with squid and large-mesh drift-net fisheries in the North Pacific Ocean

1997 ◽  
Vol 75 (4) ◽  
pp. 549-562 ◽  
Author(s):  
Patrick Gould ◽  
Peggy Ostrom ◽  
William Walker
Keyword(s):  
Pacific Ocean ◽  
Trophic Level ◽  
North Pacific ◽  
Marine Mammals ◽  
North Pacific Ocean ◽  
Transitional Zone ◽  
Trophic Relationships ◽  
Commercial Fishing ◽  
The North ◽  
The North Pacific

The diets of Laysan (Diomedea immutabilis) and black-footed albatrosses (D. nigripes) killed in squid and large-mesh drift nets in the transitional zone of the North Pacific Ocean were investigated by examining the contents of the digestive tracts and determining δ13C and δ15N values in breast-muscle tissue. The results show that (i) the combined prey of the two species of albatross consists of over 46 species of marine organisms including coelenterates, arthropods, mollusks, fish, and marine mammals; (ii) both species supplement their traditional diets with food made available by commercial fishing operations (e.g., net-caught squid and offal); (iii) while obtained from drift nets, diets of nonbreeding Laysan and black-footed albatrosses are dominated by neon flying squid (Ommastrephes bartrami); (iv) in the absence of drift-net-related food, Laysan albatrosses feed most heavily on fish and black-footed albatrosses feed most heavily on squid; and (v) based on δ15N values, nonbreeding adult Laysan albatrosses from the transitional zone of the North Pacific Ocean and Laysan albatross nestlings fed by adults from Midway Island in the subtropical Pacific feed at one trophic level and one-third of a trophic level lower than black-footed albatrosses, respectively.

Intra-seasonal and inter-annual patterns in the demographics of sand lance and response to environmental drivers in the North Pacific

2019 ◽  
Vol 617-618 ◽  
pp. 221-244 ◽  
Author(s):  
MR Baker ◽  
ME Matta ◽  
M Beaulieu ◽  
N Paris ◽  
S Huber ◽  
...  
Keyword(s):  
North Pacific ◽  
Environmental Drivers ◽  
Sand Lance ◽  
The North ◽  
The North Pacific ◽  
Annual Patterns
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