Interdecadal variation in developmental timing of Neocalanus plumchrus populations at Ocean Station P in the subarctic North Pacific

Autor:	David L. Mackas, Robert Goldblatt, Alan G. Lewis
Rok vydání:	1998
Předmět:	Biomass (ecology) food.ingredient biology Ecology Aquatic Science Seasonality biology.organism_classification medicine.disease Crustacean Zooplankton Subarctic climate Station P food Neocalanus medicine Ecology Evolution Behavior and Systematics Copepod
Zdroj:	Canadian Journal of Fisheries and Aquatic Sciences. 55:1878-1893
ISSN:	1205-7533 0706-652X
DOI:	10.1139/f98-080
Popis:	A single copepod species, Neocalanus plumchrus (Marukawa), makes up much of the mesozooplankton biomass in the subarctic Pacific. Its vertical distribution and developmental sequence are both strongly seasonal. Together, they produce a strong and narrow (2 = 0.56, development about 60 days earlier in warm than in cold years). But the change in developmental timing is too large to be explained solely by physiological acceleration of individual development rate. We suggest instead that the cause is interannual differences in survival among early versus late portions of the annual copepodite cohort.
Databáze:	OpenAIRE
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