Geographical and seasonal variations in abundance, biomass and estimated production rates of microzooplankton in the Inland Sea of Japan

Shin Ichi Uye, Naoki Nagano, Hidenori Tamaki

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

We measured abundance and biomass of 3 major groups of microzooplankton, i.e. tintinnids, naked dilates and copepod nauplii, at 21 stations in the Inland Sea of Japan in October 1993, January, April and June 1994. The average abundance of the microzooplankton over the entire Inland Sea of Japan ranged from 2.39 × 105 indiv. m-3 in January to 4.00 × 105 indiv. m-3 in April. Ciliated protozoans, i.e. tintinnids plus naked cilliates, numerically dominated the microzooplankton. The average biomass of the microzooplankton was exceedingly high in October (8.62 mg C m-3) compared to that in the other months (2.06, 2.79 and 2.68 mg Cm-3 in January, April and June, respectively). The ciliated protozoans also dominated in terms of biomass except in October, when copepod nauplii were more important. Estimated production rate of the microzooplankton was highest in October (average: 6.02 mg C m-3d-1) and followed in order by June, April and January (1.94,1.14 and 0.54 mg C m-3d-1, respectively). Due to higher specific growth rate, the production rate by the ciliated protozoans far exceeded that by the copepod nauplii. The trophic importance of the microzooplankton in the pelagic ecosystem of the Inland Sea of Japan was assessed by estimating carbon flow through the microzooplankton community.

Original languageEnglish
Pages (from-to)689-703
Number of pages15
JournalJournal of Oceanography
Volume52
Issue number6
DOIs
Publication statusPublished - Jan 1 1996

Fingerprint

inland sea
geographical variation
seasonal variation
biomass
pelagic ecosystem
carbon
rate

All Science Journal Classification (ASJC) codes

  • Oceanography

Cite this

Geographical and seasonal variations in abundance, biomass and estimated production rates of microzooplankton in the Inland Sea of Japan. / Uye, Shin Ichi; Nagano, Naoki; Tamaki, Hidenori.

In: Journal of Oceanography, Vol. 52, No. 6, 01.01.1996, p. 689-703.

Research output: Contribution to journalArticle

@article{ad65905fb122477e869e5ecc5c406b33,
title = "Geographical and seasonal variations in abundance, biomass and estimated production rates of microzooplankton in the Inland Sea of Japan",
abstract = "We measured abundance and biomass of 3 major groups of microzooplankton, i.e. tintinnids, naked dilates and copepod nauplii, at 21 stations in the Inland Sea of Japan in October 1993, January, April and June 1994. The average abundance of the microzooplankton over the entire Inland Sea of Japan ranged from 2.39 × 105 indiv. m-3 in January to 4.00 × 105 indiv. m-3 in April. Ciliated protozoans, i.e. tintinnids plus naked cilliates, numerically dominated the microzooplankton. The average biomass of the microzooplankton was exceedingly high in October (8.62 mg C m-3) compared to that in the other months (2.06, 2.79 and 2.68 mg Cm-3 in January, April and June, respectively). The ciliated protozoans also dominated in terms of biomass except in October, when copepod nauplii were more important. Estimated production rate of the microzooplankton was highest in October (average: 6.02 mg C m-3d-1) and followed in order by June, April and January (1.94,1.14 and 0.54 mg C m-3d-1, respectively). Due to higher specific growth rate, the production rate by the ciliated protozoans far exceeded that by the copepod nauplii. The trophic importance of the microzooplankton in the pelagic ecosystem of the Inland Sea of Japan was assessed by estimating carbon flow through the microzooplankton community.",
author = "Uye, {Shin Ichi} and Naoki Nagano and Hidenori Tamaki",
year = "1996",
month = "1",
day = "1",
doi = "10.1007/BF02239460",
language = "English",
volume = "52",
pages = "689--703",
journal = "Journal of Oceanography",
issn = "0916-8370",
publisher = "Oceanographic Society of Japan",
number = "6",

}

TY - JOUR

T1 - Geographical and seasonal variations in abundance, biomass and estimated production rates of microzooplankton in the Inland Sea of Japan

AU - Uye, Shin Ichi

AU - Nagano, Naoki

AU - Tamaki, Hidenori

PY - 1996/1/1

Y1 - 1996/1/1

N2 - We measured abundance and biomass of 3 major groups of microzooplankton, i.e. tintinnids, naked dilates and copepod nauplii, at 21 stations in the Inland Sea of Japan in October 1993, January, April and June 1994. The average abundance of the microzooplankton over the entire Inland Sea of Japan ranged from 2.39 × 105 indiv. m-3 in January to 4.00 × 105 indiv. m-3 in April. Ciliated protozoans, i.e. tintinnids plus naked cilliates, numerically dominated the microzooplankton. The average biomass of the microzooplankton was exceedingly high in October (8.62 mg C m-3) compared to that in the other months (2.06, 2.79 and 2.68 mg Cm-3 in January, April and June, respectively). The ciliated protozoans also dominated in terms of biomass except in October, when copepod nauplii were more important. Estimated production rate of the microzooplankton was highest in October (average: 6.02 mg C m-3d-1) and followed in order by June, April and January (1.94,1.14 and 0.54 mg C m-3d-1, respectively). Due to higher specific growth rate, the production rate by the ciliated protozoans far exceeded that by the copepod nauplii. The trophic importance of the microzooplankton in the pelagic ecosystem of the Inland Sea of Japan was assessed by estimating carbon flow through the microzooplankton community.

AB - We measured abundance and biomass of 3 major groups of microzooplankton, i.e. tintinnids, naked dilates and copepod nauplii, at 21 stations in the Inland Sea of Japan in October 1993, January, April and June 1994. The average abundance of the microzooplankton over the entire Inland Sea of Japan ranged from 2.39 × 105 indiv. m-3 in January to 4.00 × 105 indiv. m-3 in April. Ciliated protozoans, i.e. tintinnids plus naked cilliates, numerically dominated the microzooplankton. The average biomass of the microzooplankton was exceedingly high in October (8.62 mg C m-3) compared to that in the other months (2.06, 2.79 and 2.68 mg Cm-3 in January, April and June, respectively). The ciliated protozoans also dominated in terms of biomass except in October, when copepod nauplii were more important. Estimated production rate of the microzooplankton was highest in October (average: 6.02 mg C m-3d-1) and followed in order by June, April and January (1.94,1.14 and 0.54 mg C m-3d-1, respectively). Due to higher specific growth rate, the production rate by the ciliated protozoans far exceeded that by the copepod nauplii. The trophic importance of the microzooplankton in the pelagic ecosystem of the Inland Sea of Japan was assessed by estimating carbon flow through the microzooplankton community.

UR - http://www.scopus.com/inward/record.url?scp=0030435559&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030435559&partnerID=8YFLogxK

U2 - 10.1007/BF02239460

DO - 10.1007/BF02239460

M3 - Article

AN - SCOPUS:0030435559

VL - 52

SP - 689

EP - 703

JO - Journal of Oceanography

JF - Journal of Oceanography

SN - 0916-8370

IS - 6

ER -