Human impacts on the African Great Lakes

Richard Ogutu-Ohwayo, Robert E. Hecky, Andrew Cohen, Les Kaufman

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

The African Great Lakes are important sources of fishes and water for domestic use, are used as avenues of transport, and receive agricultural, domestic and industrial effluents and atmospheric residues. Some of these lakes have speciose fish faunas of great interest to science. The catchment areas of some of the lakes are highly populated and user conflicts have increased the demands on the lakes' resources. There have been drastic reductions in fish stocks in most of the lakes due to overfishing. Introductions of new fish species, though followed by increases in fish catches, have been accompanied by a decline and in some cases extinction of native fish species. Some of the lakes have been invaded by the water hyacinth, Eichhornia crassipes. Agricultural activities, deforestation and devegetation of the catchment areas have increased siltation, and led to loss of suitable habitats and biodiversity. There are increased nutrient inputs from agriculture, sewage and industrial discharges and combustion processes which can cause eutrophication. There are also increased threats of toxic pollution from industrial waste discharge, mining, pesticides, and oil residues and spills. Climatic changes may also affect thermal stability of the lakes. These factors threaten availability of dietary protein, clean water and biodiversity. National and international efforts are required to manage the fisheries, guide the introduction of exotics, conserve biodiversity, control the water hyacinth, control eutrophication, reduce in-put of contaminants and manage climate change.

Original languageEnglish (US)
Pages (from-to)117-131
Number of pages15
JournalEnvironmental Biology of Fishes
Volume50
Issue number2
DOIs
StatePublished - 1997

Fingerprint

Great Lakes
anthropogenic effect
anthropogenic activities
lakes
Eichhornia crassipes
lake
fish
biodiversity
eutrophication
climate change
industrial effluents
industrial wastes
overfishing
siltation
deforestation
thermal stability
combustion
sewage
habitat destruction
dietary protein

Keywords

  • Eutrophication
  • Fishes
  • Introductions
  • Over-exploitation
  • Pollution
  • Population growth
  • Threats

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology

Cite this

Human impacts on the African Great Lakes. / Ogutu-Ohwayo, Richard; Hecky, Robert E.; Cohen, Andrew; Kaufman, Les.

In: Environmental Biology of Fishes, Vol. 50, No. 2, 1997, p. 117-131.

Research output: Contribution to journalArticle

Ogutu-Ohwayo, R, Hecky, RE, Cohen, A & Kaufman, L 1997, 'Human impacts on the African Great Lakes', Environmental Biology of Fishes, vol. 50, no. 2, pp. 117-131. https://doi.org/10.1023/A:1007320932349
Ogutu-Ohwayo, Richard ; Hecky, Robert E. ; Cohen, Andrew ; Kaufman, Les. / Human impacts on the African Great Lakes. In: Environmental Biology of Fishes. 1997 ; Vol. 50, No. 2. pp. 117-131.
@article{6038d0544015429d81dd8ec887acb1c0,
title = "Human impacts on the African Great Lakes",
abstract = "The African Great Lakes are important sources of fishes and water for domestic use, are used as avenues of transport, and receive agricultural, domestic and industrial effluents and atmospheric residues. Some of these lakes have speciose fish faunas of great interest to science. The catchment areas of some of the lakes are highly populated and user conflicts have increased the demands on the lakes' resources. There have been drastic reductions in fish stocks in most of the lakes due to overfishing. Introductions of new fish species, though followed by increases in fish catches, have been accompanied by a decline and in some cases extinction of native fish species. Some of the lakes have been invaded by the water hyacinth, Eichhornia crassipes. Agricultural activities, deforestation and devegetation of the catchment areas have increased siltation, and led to loss of suitable habitats and biodiversity. There are increased nutrient inputs from agriculture, sewage and industrial discharges and combustion processes which can cause eutrophication. There are also increased threats of toxic pollution from industrial waste discharge, mining, pesticides, and oil residues and spills. Climatic changes may also affect thermal stability of the lakes. These factors threaten availability of dietary protein, clean water and biodiversity. National and international efforts are required to manage the fisheries, guide the introduction of exotics, conserve biodiversity, control the water hyacinth, control eutrophication, reduce in-put of contaminants and manage climate change.",
keywords = "Eutrophication, Fishes, Introductions, Over-exploitation, Pollution, Population growth, Threats",
author = "Richard Ogutu-Ohwayo and Hecky, {Robert E.} and Andrew Cohen and Les Kaufman",
year = "1997",
doi = "10.1023/A:1007320932349",
language = "English (US)",
volume = "50",
pages = "117--131",
journal = "Environmental Biology of Fishes",
issn = "0378-1909",
publisher = "Springer Netherlands",
number = "2",

}

TY - JOUR

T1 - Human impacts on the African Great Lakes

AU - Ogutu-Ohwayo, Richard

AU - Hecky, Robert E.

AU - Cohen, Andrew

AU - Kaufman, Les

PY - 1997

Y1 - 1997

N2 - The African Great Lakes are important sources of fishes and water for domestic use, are used as avenues of transport, and receive agricultural, domestic and industrial effluents and atmospheric residues. Some of these lakes have speciose fish faunas of great interest to science. The catchment areas of some of the lakes are highly populated and user conflicts have increased the demands on the lakes' resources. There have been drastic reductions in fish stocks in most of the lakes due to overfishing. Introductions of new fish species, though followed by increases in fish catches, have been accompanied by a decline and in some cases extinction of native fish species. Some of the lakes have been invaded by the water hyacinth, Eichhornia crassipes. Agricultural activities, deforestation and devegetation of the catchment areas have increased siltation, and led to loss of suitable habitats and biodiversity. There are increased nutrient inputs from agriculture, sewage and industrial discharges and combustion processes which can cause eutrophication. There are also increased threats of toxic pollution from industrial waste discharge, mining, pesticides, and oil residues and spills. Climatic changes may also affect thermal stability of the lakes. These factors threaten availability of dietary protein, clean water and biodiversity. National and international efforts are required to manage the fisheries, guide the introduction of exotics, conserve biodiversity, control the water hyacinth, control eutrophication, reduce in-put of contaminants and manage climate change.

AB - The African Great Lakes are important sources of fishes and water for domestic use, are used as avenues of transport, and receive agricultural, domestic and industrial effluents and atmospheric residues. Some of these lakes have speciose fish faunas of great interest to science. The catchment areas of some of the lakes are highly populated and user conflicts have increased the demands on the lakes' resources. There have been drastic reductions in fish stocks in most of the lakes due to overfishing. Introductions of new fish species, though followed by increases in fish catches, have been accompanied by a decline and in some cases extinction of native fish species. Some of the lakes have been invaded by the water hyacinth, Eichhornia crassipes. Agricultural activities, deforestation and devegetation of the catchment areas have increased siltation, and led to loss of suitable habitats and biodiversity. There are increased nutrient inputs from agriculture, sewage and industrial discharges and combustion processes which can cause eutrophication. There are also increased threats of toxic pollution from industrial waste discharge, mining, pesticides, and oil residues and spills. Climatic changes may also affect thermal stability of the lakes. These factors threaten availability of dietary protein, clean water and biodiversity. National and international efforts are required to manage the fisheries, guide the introduction of exotics, conserve biodiversity, control the water hyacinth, control eutrophication, reduce in-put of contaminants and manage climate change.

KW - Eutrophication

KW - Fishes

KW - Introductions

KW - Over-exploitation

KW - Pollution

KW - Population growth

KW - Threats

UR - http://www.scopus.com/inward/record.url?scp=0030754387&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030754387&partnerID=8YFLogxK

U2 - 10.1023/A:1007320932349

DO - 10.1023/A:1007320932349

M3 - Article

AN - SCOPUS:0030754387

VL - 50

SP - 117

EP - 131

JO - Environmental Biology of Fishes

JF - Environmental Biology of Fishes

SN - 0378-1909

IS - 2

ER -