Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan

Variations between midday and midnight in the species composition and abundance of the main zooplankton assemblage of Lake Ikeda, a crater-lake were analyzed during the summer of 1986. The protozoans, comprising more than 70% of the whole zooplankton population were the most abundant followed l7y...

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Main Authors: Shaharudin, Abdul Razak, Toshio, Saisho
Format: Article
Language:English
Published: Universiti Putra Malaysia Press 2002
Online Access:http://psasir.upm.edu.my/id/eprint/3417/1/Summer_Mid-Day-Night_Composition_and_Abundance_of_Zooplankton.pdf
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author Shaharudin, Abdul Razak
Toshio, Saisho
author_facet Shaharudin, Abdul Razak
Toshio, Saisho
author_sort Shaharudin, Abdul Razak
collection UPM
description Variations between midday and midnight in the species composition and abundance of the main zooplankton assemblage of Lake Ikeda, a crater-lake were analyzed during the summer of 1986. The protozoans, comprising more than 70% of the whole zooplankton population were the most abundant followed l7y the rotifers (12%), eopepods (8 %) and cladocerans (7 %). Except for the copepods and a few rotifers, most of the other zooplankton were evident at a slightly higher abundance at night. Total zooplankton abundance was highest during early summer but decreased gradually until the end of summer. Species composition was highest in early summer, and persisted until the middle of summer but gradually decreased with rare occurrences of some species at the end of summer, where some species were either rarely sampled or entirely absent from the samples.
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spelling upm.eprints-34172015-09-10T07:43:01Z http://psasir.upm.edu.my/id/eprint/3417/ Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan Shaharudin, Abdul Razak Toshio, Saisho Variations between midday and midnight in the species composition and abundance of the main zooplankton assemblage of Lake Ikeda, a crater-lake were analyzed during the summer of 1986. The protozoans, comprising more than 70% of the whole zooplankton population were the most abundant followed l7y the rotifers (12%), eopepods (8 %) and cladocerans (7 %). Except for the copepods and a few rotifers, most of the other zooplankton were evident at a slightly higher abundance at night. Total zooplankton abundance was highest during early summer but decreased gradually until the end of summer. Species composition was highest in early summer, and persisted until the middle of summer but gradually decreased with rare occurrences of some species at the end of summer, where some species were either rarely sampled or entirely absent from the samples. Universiti Putra Malaysia Press 2002 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3417/1/Summer_Mid-Day-Night_Composition_and_Abundance_of_Zooplankton.pdf Shaharudin, Abdul Razak and Toshio, Saisho (2002) Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan. Pertanika Journal of Tropical Agricultural Science, 25 (1). pp. 1-9. ISSN 1511-3701 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2025%20(1)%20Apr.%202002/01%20JTAS%20Vol.25%20(1)%202002%20(Pg%201-9).pdf
spellingShingle Shaharudin, Abdul Razak
Toshio, Saisho
Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan
title Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan
title_full Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan
title_fullStr Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan
title_full_unstemmed Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan
title_short Summer mid-day-night composition and abundance of zooplankton from Lake Ikeda, Japan
title_sort summer mid day night composition and abundance of zooplankton from lake ikeda japan
url http://psasir.upm.edu.my/id/eprint/3417/1/Summer_Mid-Day-Night_Composition_and_Abundance_of_Zooplankton.pdf
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