The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, Nigeria
Because of the pivotal role of zooplankton in most aquatic ecosystems; there is constant need to explore the effect of stressors (such as physicochemical properties of freshwater) on their abundance. We documented the effect of temperature, pH, turbidity, dissolved oxygen (DO), nitrate (NO3-), and p...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Journal of Freshwater Ecology |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/02705060.2021.2011793 |
| _version_ | 1818987157352611840 |
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| author | Nkiruka F. Oparaku Felix A. Andong Ijem A. Nnachi Elijah S. Okwuonu James C. Ezeukwu Joseph C. Ndefo |
| author_facet | Nkiruka F. Oparaku Felix A. Andong Ijem A. Nnachi Elijah S. Okwuonu James C. Ezeukwu Joseph C. Ndefo |
| author_sort | Nkiruka F. Oparaku |
| collection | DOAJ |
| description | Because of the pivotal role of zooplankton in most aquatic ecosystems; there is constant need to explore the effect of stressors (such as physicochemical properties of freshwater) on their abundance. We documented the effect of temperature, pH, turbidity, dissolved oxygen (DO), nitrate (NO3-), and phosphate (PO4³-) on the abundance of zooplankton of the River Adada, Nigeria. Using a manual pump, zooplankton were collected from three strategic stations from January to April (dry season) and June to September (rainy season). A total of 2,219 (dry = 945; rainy = 1,274) zooplankton occurred in the following descending order of abundance: copepods < rotifers < cladocerans < ostracods < insect larva. Whereas based on species number, cladocerans (n = 10) < copepods (n = 8) < rotifers (n = 7) < insect larva (n = 4) < ostracods (n = 2) occurred in this descending order. The downstream (station C) had more zooplankton (dry = 427; rainy = 391), followed by the mid-stream (station B; dry = 216; rainy = 591) and upstream (station A; dry = 302; rainy = 292). There was also a significant (P < 0.05) joint interactive effect of thermal condition on turbidity, pH, DO, PO4³- and NO3- to influence zooplankton abundance. Indicating that temperature is an important factor determining the assemblage of zooplankton in freshwater. Nevertheless, to assure an accurate evaluation of the effect of physicochemical parameters on zooplankton abundance in freshwater, future studies should include extended study periods and make use of more sophisticated trapping technique that would ensure the collection of a larger sample size with more species of zooplankton. |
| first_indexed | 2024-12-20T19:02:13Z |
| format | Article |
| id | doaj.art-3877bcfd07be49bea62d7b83c2b886c9 |
| institution | Directory Open Access Journal |
| issn | 0270-5060 2156-6941 |
| language | English |
| last_indexed | 2024-12-20T19:02:13Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Freshwater Ecology |
| spelling | doaj.art-3877bcfd07be49bea62d7b83c2b886c92022-12-21T19:29:22ZengTaylor & Francis GroupJournal of Freshwater Ecology0270-50602156-69412022-12-01371335610.1080/02705060.2021.20117932011793The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, NigeriaNkiruka F. Oparaku0Felix A. Andong1Ijem A. NnachiElijah S. OkwuonuJames C. EzeukwuJoseph C. Ndefo2Department of Zoology and Environmental Biology, University of NigeriaDepartment of Zoology and Environmental Biology, University of NigeriaDepartment of Science Laboratory Technology, University of NigeriaBecause of the pivotal role of zooplankton in most aquatic ecosystems; there is constant need to explore the effect of stressors (such as physicochemical properties of freshwater) on their abundance. We documented the effect of temperature, pH, turbidity, dissolved oxygen (DO), nitrate (NO3-), and phosphate (PO4³-) on the abundance of zooplankton of the River Adada, Nigeria. Using a manual pump, zooplankton were collected from three strategic stations from January to April (dry season) and June to September (rainy season). A total of 2,219 (dry = 945; rainy = 1,274) zooplankton occurred in the following descending order of abundance: copepods < rotifers < cladocerans < ostracods < insect larva. Whereas based on species number, cladocerans (n = 10) < copepods (n = 8) < rotifers (n = 7) < insect larva (n = 4) < ostracods (n = 2) occurred in this descending order. The downstream (station C) had more zooplankton (dry = 427; rainy = 391), followed by the mid-stream (station B; dry = 216; rainy = 591) and upstream (station A; dry = 302; rainy = 292). There was also a significant (P < 0.05) joint interactive effect of thermal condition on turbidity, pH, DO, PO4³- and NO3- to influence zooplankton abundance. Indicating that temperature is an important factor determining the assemblage of zooplankton in freshwater. Nevertheless, to assure an accurate evaluation of the effect of physicochemical parameters on zooplankton abundance in freshwater, future studies should include extended study periods and make use of more sophisticated trapping technique that would ensure the collection of a larger sample size with more species of zooplankton.http://dx.doi.org/10.1080/02705060.2021.2011793seasonscopepodsphysicochemical propertiesfreshwaterriver adada |
| spellingShingle | Nkiruka F. Oparaku Felix A. Andong Ijem A. Nnachi Elijah S. Okwuonu James C. Ezeukwu Joseph C. Ndefo The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, Nigeria Journal of Freshwater Ecology seasons copepods physicochemical properties freshwater river adada |
| title | The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, Nigeria |
| title_full | The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, Nigeria |
| title_fullStr | The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, Nigeria |
| title_full_unstemmed | The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, Nigeria |
| title_short | The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, Nigeria |
| title_sort | effect of physicochemical parameters on the abundance of zooplankton of river adada enugu nigeria |
| topic | seasons copepods physicochemical properties freshwater river adada |
| url | http://dx.doi.org/10.1080/02705060.2021.2011793 |
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