Fish catches, and the influence of climatic and non-climatic factors in Lakes Chivero and Manyame, Zimbabwe
Inland fisheries provide income, food security and nutrition and act as a labour buffer. Yet they scarcely receive consideration in water resource allocation and economic decisions. Inland peri-urban fisheries face many challenges to their sustainability such as urban encroachment, environmental deg...
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Online Access: | http://dx.doi.org/10.1080/23311932.2018.1435018 |
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doaj-7a4ea5e0a3ce44bfb59bd326014b09a52021-03-02T15:42:32ZengTaylor & Francis GroupCogent Food & Agriculture2331-19322018-01-014110.1080/23311932.2018.14350181435018Fish catches, and the influence of climatic and non-climatic factors in Lakes Chivero and Manyame, ZimbabweBeaven Utete0Crispen Phiri1Sibonani S. Mlambo2Never Muboko3Bernadette T. Fregene4Chinhoyi University of TechnologyChinhoyi University of TechnologyChinhoyi University of TechnologyChinhoyi University of TechnologyUniversity of IbadanInland fisheries provide income, food security and nutrition and act as a labour buffer. Yet they scarcely receive consideration in water resource allocation and economic decisions. Inland peri-urban fisheries face many challenges to their sustainability such as urban encroachment, environmental degradation and climate change. This study aimed to assess the historical fish catches, species composition, and investigate the effects of climatic variability and catchment dynamics in peri-urban Lakes Chivero and Manyame in Zimbabwe. The Mann-Kendall test was used to analyse time series trends in fisheries and climatic data. Multiple regression analysis was used to assess relations between fish catches and climate data for Lakes Chivero and Manyame. Fish catches have significantly declined in Lakes Chivero and Manyame over the periods considered with a shift towards a monospecies dominance in the fish community. Peri-urban lakes are characterised by highly adapted, relatively large sized fish species which have an ability to utilise a directional environmental disturbance such as hypereutrophication. Climatic factors have significant effects in fish catches in Lake Chivero. Despite the potential negative socioeconomic consequences inferred from declining fish catches, water pollution, gross underreporting, poor recording and preservation of fisheries statistics remains a massive threat to the survival of inland peri-urban fisheries in Lakes Chivero and Manyame.http://dx.doi.org/10.1080/23311932.2018.1435018fish statisticscatch per unit effortclimate changepollutioninland lakespoverty |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Beaven Utete Crispen Phiri Sibonani S. Mlambo Never Muboko Bernadette T. Fregene |
spellingShingle |
Beaven Utete Crispen Phiri Sibonani S. Mlambo Never Muboko Bernadette T. Fregene Fish catches, and the influence of climatic and non-climatic factors in Lakes Chivero and Manyame, Zimbabwe Cogent Food & Agriculture fish statistics catch per unit effort climate change pollution inland lakes poverty |
author_facet |
Beaven Utete Crispen Phiri Sibonani S. Mlambo Never Muboko Bernadette T. Fregene |
author_sort |
Beaven Utete |
title |
Fish catches, and the influence of climatic and non-climatic factors in Lakes Chivero and Manyame, Zimbabwe |
title_short |
Fish catches, and the influence of climatic and non-climatic factors in Lakes Chivero and Manyame, Zimbabwe |
title_full |
Fish catches, and the influence of climatic and non-climatic factors in Lakes Chivero and Manyame, Zimbabwe |
title_fullStr |
Fish catches, and the influence of climatic and non-climatic factors in Lakes Chivero and Manyame, Zimbabwe |
title_full_unstemmed |
Fish catches, and the influence of climatic and non-climatic factors in Lakes Chivero and Manyame, Zimbabwe |
title_sort |
fish catches, and the influence of climatic and non-climatic factors in lakes chivero and manyame, zimbabwe |
publisher |
Taylor & Francis Group |
series |
Cogent Food & Agriculture |
issn |
2331-1932 |
publishDate |
2018-01-01 |
description |
Inland fisheries provide income, food security and nutrition and act as a labour buffer. Yet they scarcely receive consideration in water resource allocation and economic decisions. Inland peri-urban fisheries face many challenges to their sustainability such as urban encroachment, environmental degradation and climate change. This study aimed to assess the historical fish catches, species composition, and investigate the effects of climatic variability and catchment dynamics in peri-urban Lakes Chivero and Manyame in Zimbabwe. The Mann-Kendall test was used to analyse time series trends in fisheries and climatic data. Multiple regression analysis was used to assess relations between fish catches and climate data for Lakes Chivero and Manyame. Fish catches have significantly declined in Lakes Chivero and Manyame over the periods considered with a shift towards a monospecies dominance in the fish community. Peri-urban lakes are characterised by highly adapted, relatively large sized fish species which have an ability to utilise a directional environmental disturbance such as hypereutrophication. Climatic factors have significant effects in fish catches in Lake Chivero. Despite the potential negative socioeconomic consequences inferred from declining fish catches, water pollution, gross underreporting, poor recording and preservation of fisheries statistics remains a massive threat to the survival of inland peri-urban fisheries in Lakes Chivero and Manyame. |
topic |
fish statistics catch per unit effort climate change pollution inland lakes poverty |
url |
http://dx.doi.org/10.1080/23311932.2018.1435018 |
work_keys_str_mv |
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