2006
DOI: 10.1111/j.1365-2028.2006.00725.x
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Abundance and distribution of fish in the lower Mnembo River, Malawi‐Mozambique

Abstract: Endorheic Lake Chilwa is one of the most productive lakes for fisheries in Africa. High human population densities and agricultural practices in the Chilwa catchment have been linked to observed declines of the annual fish catch in the lake. The Mnembo River is a major inflow into Lake Chilwa which has received little scientific study to date. In 2003/2004, fish diversity, abundance and distribution were monitored monthly at three sites in the Mnembo River. Twelve fish species were collected, a subset of the f… Show more

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Cited by 6 publications
(8 citation statements)
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“…A recent study by Macuiane et al (2009) found that the maximum length of Barbus was similar to those reported by earlier studies (Furse et al, 1979b;Bell-Cross and Minshull, 1988;Msiska, 2001;Njaya, 2001;Delaney et al, 2006). The recent persistent use of small mesh nets in Lake Chilwa makes the escape of small individuals difficult.…”
Section: The Fisherysupporting
confidence: 69%
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“…A recent study by Macuiane et al (2009) found that the maximum length of Barbus was similar to those reported by earlier studies (Furse et al, 1979b;Bell-Cross and Minshull, 1988;Msiska, 2001;Njaya, 2001;Delaney et al, 2006). The recent persistent use of small mesh nets in Lake Chilwa makes the escape of small individuals difficult.…”
Section: The Fisherysupporting
confidence: 69%
“…Results also showed that degraded rivers with reduced river discharge on the Malawi side were devoid of Labeo mesops, while the Mnembo River, which has significantly higher river discharge and a relatively undisturbed catchment, has higher fish biodiversity, including Labeo mesops. Recent studies (Jamu et al, 2003;Delaney et al, 2006;Macuiane et al, 2009) support results of earlier work (Furse et al, 1979b;Kalk et al, 1979) which showed that marshes serve a critical function as breeding and nursery areas and swamps as de facto closed areas or sanctuaries. However, burning of marshes, siltation and conversion of these marshes to rice fields threaten the sustainability of the fishery.…”
Section: The Fisherysupporting
confidence: 66%
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“…Malawi lakes and rivers, and the ecosystem services that they provide, are under considerable stress due to high population growth, increasing levels of poverty, environmental degradation and high fish demand (Turner et al, 1995;Mkanda, 2002;Delaney et al, 2007;Hecky et al, 2003). High fish demand has led to localised overexploitation of fish resources.…”
Section: Introductionmentioning
confidence: 98%
“…Environmental degradation has also contributed to localized over-exploitation of some species Mkanda, 2000;Hecky et al, 2003;Delaney et al, 2007). As a result a number of taxa that were historically abundant in Southern Lake Malawi prior to the mid-1970s are either locally extinct or are caught in substantially lower amounts (FAO, 1993;Turner, 1995;Banda and Tomasson, 1997;Banda et al, 2005).…”
Section: Catch Trends For the Key Species -Chambo And Usipamentioning
confidence: 99%