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Influences of environmental parameters and phytoplankton productivity on benthic invertebrates in a tropical oligotrophic lake, northern Malaysia

Rahman, Mohammad Mustafizur and Fathi, Ahmad and Balcombe, Stephen Richard and Nelson, Bryan Raveen and John, Akbar B (2021) Influences of environmental parameters and phytoplankton productivity on benthic invertebrates in a tropical oligotrophic lake, northern Malaysia. Environmental Science and Pollution Research, 28 (32). pp. 43935-43947. ISSN 0944-1344 E-ISSN 1614-7499

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Abstract

Studies that associate environmental parameters with aquatic organisms in man-made lakes remain limited by accessibility and interest particularly in many Asian countries.Withmissed opportunities to monitor environmental transitions at Lake Kenyir, our knowledge of lake transition is restricted to the non-mixing shallow waters only. Triplicate monthly benthic invertebrate samples were collected concurrentlywith various environmental parameters at three locations (zonesA–C) of Kenyir Lake,Malaysia. Our results affirmed that the northeast part of Lake Kenyir is oligotrophic. Abundance of phytoplankton, total suspended solids, phosphate, nitrite and nitrate drive the abundance of various groups of benthic invertebrates. All of these extrinsic variables (except phosphate) negatively influenced the density of Trichoptera and positively influenced (P<0.05) the densities of Polychaeta, Oligochaeta, Bivalvia, Gastropod, Isopoda and Copepod in all zones. Phosphate negatively influenced the density of Trichoptera and positively influenced (P<0.05) the densities of Oligochaeta, Bivalvia and Copepod. Its influences on the Polychaeta, Gastropod and Isopoda densities were zone-specific. Overall, seasons equally influenced the relationships between extrinsic and response variables in all zones. The results of this study are useful to evaluate the lake’s environmental quality, in conservation and in similar projects involving environmental handling, monitoring and recovery.

Item Type: Article (Journal)
Additional Information: 6647/92643
Uncontrolled Keywords: Ecology; Extrinsic factors; Intrinsic variables; Water quality; Trichoptera; Plankton; Detrended Correspondence; Analysis; PERMANOVA; Man-made lake
Subjects: Q Science > QH Natural history > QH541.13 Ecology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science
Kulliyyah of Science > Department of Marine Science
Kulliyyah of Science > Department of Biotechnology
Depositing User: Dr. Mohammad Mustafizur Rahman
Date Deposited: 04 Oct 2021 09:42
Last Modified: 04 Oct 2021 09:42
URI: http://irep.iium.edu.my/id/eprint/92643

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