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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Universiti Putra Malaysia Press
2002
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3417/ http://psasir.upm.edu.my/id/eprint/3417/1/Summer_Mid-Day-Night_Composition_and_Abundance_of_Zooplankton.pdf |
| _version_ | 1848839524628561920 |
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| author | Shaharudin, Abdul Razak Toshio, Saisho |
| author_facet | Shaharudin, Abdul Razak Toshio, Saisho |
| author_sort | Shaharudin, Abdul Razak |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T07:12:49Z |
| format | Article |
| id | upm-3417 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:12:49Z |
| publishDate | 2002 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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/ http://psasir.upm.edu.my/id/eprint/3417/ http://psasir.upm.edu.my/id/eprint/3417/1/Summer_Mid-Day-Night_Composition_and_Abundance_of_Zooplankton.pdf |