Diurnal variations in mesozooplankton composition, abundance, and biomass of Sulu, Celebes, and South China Seas

Date

4-2006

Degree

Bachelor of Science in Biology

Major Course

Major in Zoology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Lourdes V. Castillo

Abstract

Diurnal variations in mesozooplankton composition, abundance and biomass of the Celebes, Sulu, and South China Seas were determined. Zooplankton samples collected using a Norpac twin net were sieved using a 220 pin mesh plankton net to collect the mesozooplankton fraction. The mesozooplankton were dominated by crustaceans followed by gelatinous plankton. Crustaceans represented by copepods, ostracods, and decapods, as well as gelatinous zooplankton represented by siphonophores. doliolids, chaetognaths and appendicularians contributed to day and night variations in density and biomass. The cyclopoid and harpacticoid copepods. ostracods and decapods, ctenophores and appendicularians were observed to have distinct changes in their abundance day and night in all three seas. Estimates of biomass were relatively higher during the day for samples collected with 110 pm net (except in Celebes Sea) than those collected with 330 pm net, the reverse is true for samples collected during the night. except in South China Sea.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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