Grazing of the spring diatom bloom in the New York Bight by the calanoid copepods Calanus finmarchicus, Metridia lucens and Centropages typicus

Sharon L Smith, P. V Z Lane

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Spring in shelf waters of the New York Bight was characterized by a relatively rapid increase in the numbers and biomass of the large herbivorous copepod Calanus finmarchicus, which seemed to be growing at an in situ rate of approximately 8% body weight per day. The functional feeding response of females of all three taxa never showed saturation. The proportion of daily primary production which was ingested by these three taxa increased from 13 to 46% in the March-April interval at one shelf location and was >100% in both March and April at another shelf location. In contrast, the proportion of daily production which was ingested in slope water in April was only 4%. The implication is that most of the spring diatom bloom over the shelf is ingested over the shelf by the population of rapidly growing C. finmarchicus juveniles. The fecal carbon calculated to be generated by the grazing activities of the observed populations of C. finmarchicus, Metridia lucens, and Centropages typicus resulted in a daily vertical carbon flux very similar to that observed over the shelf with sediment traps and pellet collectors.

Original languageEnglish
Pages (from-to)485-509
Number of pages25
JournalContinental Shelf Research
Volume8
Issue number5-7
DOIs
StatePublished - Jan 1 1988
Externally publishedYes

Fingerprint

Metridia
Calanus finmarchicus
algal blooms
Copepoda
algal bloom
diatom
grazing
sediment trap
carbon flux
primary production
carbon
saturation
collectors
water
pellets
primary productivity
biomass
body weight
in situ
rate

ASJC Scopus subject areas

  • Aquatic Science
  • Geology
  • Oceanography

Cite this

Grazing of the spring diatom bloom in the New York Bight by the calanoid copepods Calanus finmarchicus, Metridia lucens and Centropages typicus. / Smith, Sharon L; Lane, P. V Z.

In: Continental Shelf Research, Vol. 8, No. 5-7, 01.01.1988, p. 485-509.

Research output: Contribution to journalArticle

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abstract = "Spring in shelf waters of the New York Bight was characterized by a relatively rapid increase in the numbers and biomass of the large herbivorous copepod Calanus finmarchicus, which seemed to be growing at an in situ rate of approximately 8{\%} body weight per day. The functional feeding response of females of all three taxa never showed saturation. The proportion of daily primary production which was ingested by these three taxa increased from 13 to 46{\%} in the March-April interval at one shelf location and was >100{\%} in both March and April at another shelf location. In contrast, the proportion of daily production which was ingested in slope water in April was only 4{\%}. The implication is that most of the spring diatom bloom over the shelf is ingested over the shelf by the population of rapidly growing C. finmarchicus juveniles. The fecal carbon calculated to be generated by the grazing activities of the observed populations of C. finmarchicus, Metridia lucens, and Centropages typicus resulted in a daily vertical carbon flux very similar to that observed over the shelf with sediment traps and pellet collectors.",
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