Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi
This study assessed zooplankton density and Chl-a amount to understand their spatial and seasonal variation in Lake Malombe. Samples were collected for analysis during the hot, dry season (HDS) and cool, dry, windy season (CDWS). The zooplankton identified were Tropodiaptomus cunningtoni (TC), Mesoc...
Published in: | Journal of Freshwater Ecology |
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Language: | English |
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Taylor & Francis Group
2021
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Online Access: | https://doi.org/10.1080/02705060.2021.1943019 https://doaj.org/article/20d4f1b6ab8d410eb6bb31df2622d851 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:20d4f1b6ab8d410eb6bb31df2622d851 2023-05-15T18:49:44+02:00 Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi Rodgers Makwinja Seyoum Mengistou Emmanuel Kaunda Tena Alamirew 2021-12-01 https://doi.org/10.1080/02705060.2021.1943019 https://doaj.org/article/20d4f1b6ab8d410eb6bb31df2622d851 en eng Taylor & Francis Group 0270-5060 2156-6941 doi:10.1080/02705060.2021.1943019 https://doaj.org/article/20d4f1b6ab8d410eb6bb31df2622d851 undefined Journal of Freshwater Ecology, Vol 36, Iss 1, Pp 127-148 (2021) chlorophyll-a (chl-a) physical-chemical variables zooplankton geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.1080/02705060.2021.1943019 2023-01-22T19:11:53Z This study assessed zooplankton density and Chl-a amount to understand their spatial and seasonal variation in Lake Malombe. Samples were collected for analysis during the hot, dry season (HDS) and cool, dry, windy season (CDWS). The zooplankton identified were Tropodiaptomus cunningtoni (TC), Mesocyclops aequatorialis aequatorialis (MAA), Thermocyclops neglectus (TN), Bosmina longirostris (BL), Diaphanosoma spp. (DS), and Nauplii. These zooplankton groups belong to copepods, Cyclopidae, Cladocera, Ctenopod, and Rotifers. Chl-a exhibited a substantial seasonal variation, with the highest concentration observed in HDS and lowest in CDWS. Zooplankton such as T. cunningtoni, M. aeq. aequatorialis, T. neglectus, B. longirostris, Diaphanosoma spp, Nauplii, and Rotifer increased during the HDS. The water temperatures (WT), pH, Dissolved Oxygen (DO), and Chl-a positively correlated with all zooplankton densities. Sodium (Na+) and Potassium (K+) ions positively correlated with TC, MAA, DS, Nauplii, and Rotifers. Chloride ion (Cl-) positively correlated with DS, Rotifers, while Carbonate ion (CO32-) positively correlated with TC. Bicarbonate (HCO3-) correlated positively with DS and Rotifers, while TDS correlated negatively with BL, Nauplii, and Rotifers. Nitrite affected zooplankton density negatively, while SRP had a positive effect. The study revealed that physical-chemical variables, some significant ions, and Chl-a are the most critical factors influencing the spatial and seasonal variation of zooplankton density in the lake. These findings demonstrate the interaction between physical-chemical variables, Chl-a, and zooplankton and highlight the significance of ecological understanding of the complex dynamics of the food web system in shallow tropical lakes such as Lake Malombe- under the changing climate. Article in Journal/Newspaper Copepods Rotifer Unknown Journal of Freshwater Ecology 36 1 127 148 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
chlorophyll-a (chl-a) physical-chemical variables zooplankton geo envir |
spellingShingle |
chlorophyll-a (chl-a) physical-chemical variables zooplankton geo envir Rodgers Makwinja Seyoum Mengistou Emmanuel Kaunda Tena Alamirew Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi |
topic_facet |
chlorophyll-a (chl-a) physical-chemical variables zooplankton geo envir |
description |
This study assessed zooplankton density and Chl-a amount to understand their spatial and seasonal variation in Lake Malombe. Samples were collected for analysis during the hot, dry season (HDS) and cool, dry, windy season (CDWS). The zooplankton identified were Tropodiaptomus cunningtoni (TC), Mesocyclops aequatorialis aequatorialis (MAA), Thermocyclops neglectus (TN), Bosmina longirostris (BL), Diaphanosoma spp. (DS), and Nauplii. These zooplankton groups belong to copepods, Cyclopidae, Cladocera, Ctenopod, and Rotifers. Chl-a exhibited a substantial seasonal variation, with the highest concentration observed in HDS and lowest in CDWS. Zooplankton such as T. cunningtoni, M. aeq. aequatorialis, T. neglectus, B. longirostris, Diaphanosoma spp, Nauplii, and Rotifer increased during the HDS. The water temperatures (WT), pH, Dissolved Oxygen (DO), and Chl-a positively correlated with all zooplankton densities. Sodium (Na+) and Potassium (K+) ions positively correlated with TC, MAA, DS, Nauplii, and Rotifers. Chloride ion (Cl-) positively correlated with DS, Rotifers, while Carbonate ion (CO32-) positively correlated with TC. Bicarbonate (HCO3-) correlated positively with DS and Rotifers, while TDS correlated negatively with BL, Nauplii, and Rotifers. Nitrite affected zooplankton density negatively, while SRP had a positive effect. The study revealed that physical-chemical variables, some significant ions, and Chl-a are the most critical factors influencing the spatial and seasonal variation of zooplankton density in the lake. These findings demonstrate the interaction between physical-chemical variables, Chl-a, and zooplankton and highlight the significance of ecological understanding of the complex dynamics of the food web system in shallow tropical lakes such as Lake Malombe- under the changing climate. |
format |
Article in Journal/Newspaper |
author |
Rodgers Makwinja Seyoum Mengistou Emmanuel Kaunda Tena Alamirew |
author_facet |
Rodgers Makwinja Seyoum Mengistou Emmanuel Kaunda Tena Alamirew |
author_sort |
Rodgers Makwinja |
title |
Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi |
title_short |
Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi |
title_full |
Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi |
title_fullStr |
Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi |
title_full_unstemmed |
Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi |
title_sort |
spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from lake malombe, malawi |
publisher |
Taylor & Francis Group |
publishDate |
2021 |
url |
https://doi.org/10.1080/02705060.2021.1943019 https://doaj.org/article/20d4f1b6ab8d410eb6bb31df2622d851 |
genre |
Copepods Rotifer |
genre_facet |
Copepods Rotifer |
op_source |
Journal of Freshwater Ecology, Vol 36, Iss 1, Pp 127-148 (2021) |
op_relation |
0270-5060 2156-6941 doi:10.1080/02705060.2021.1943019 https://doaj.org/article/20d4f1b6ab8d410eb6bb31df2622d851 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/02705060.2021.1943019 |
container_title |
Journal of Freshwater Ecology |
container_volume |
36 |
container_issue |
1 |
container_start_page |
127 |
op_container_end_page |
148 |
_version_ |
1766243342671151104 |