The impact of sediment pollution on biodiversity in Lake Tanganyika

Andrew Cohen, R. Bills, C. Z. Cocquyt, A. G. Caljon

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

Rapid erosion as a consequence of deforestation is resulting in the discharge of large volumes of sediment into normally clear-water littoral and sublittoral environments. The authors determined species richness patterns among ostracodes, fish, and diatoms for undisturbed, moderately disturbed, and highly disturbed areas. Ostracodes are significantly less diverse in highly disturbed sites than in less disturbed ones for both soft and hard substrate littoral environments, with reductions in species richness ranging from 40-62%. Species richness patterns for profundal ostracodes show smaller differences between low- and high disturbance environments (7-32%) that are not statistically significant. Fish census data show a similar pattern to ostracodes. For water depths where comparative transects were made, species richness was 35-65% lower at high disturbance than at low disturbance sites. Diatoms showed only minor and statistically insignificant reductions in species richness between low and high disturbance sites (15-20%). Ostracodes and fish may be more affected by sedimentation because they are mostly endemic and may require clearwater habitats, whereas the benthic diatom species in the lake are largely cosmopolitan and in many cases also occur in turbid affluent rivers. -from Authors

Original languageEnglish (US)
Pages (from-to)667-677
Number of pages11
JournalConservation Biology
Volume7
Issue number3
StatePublished - 1993

Fingerprint

sediment pollution
Lake Tanganyika
sediment contamination
Biodiversity
ostracod
Fish
Lakes
Sediments
Pollution
species richness
biodiversity
Bacillariophyceae
species diversity
lake
disturbance
diatom
Deforestation
Water
Sedimentation
fish

ASJC Scopus subject areas

  • Environmental Science(all)
  • Ecology
  • Environmental Chemistry
  • Nature and Landscape Conservation

Cite this

Cohen, A., Bills, R., Cocquyt, C. Z., & Caljon, A. G. (1993). The impact of sediment pollution on biodiversity in Lake Tanganyika. Conservation Biology, 7(3), 667-677.

The impact of sediment pollution on biodiversity in Lake Tanganyika. / Cohen, Andrew; Bills, R.; Cocquyt, C. Z.; Caljon, A. G.

In: Conservation Biology, Vol. 7, No. 3, 1993, p. 667-677.

Research output: Contribution to journalArticle

Cohen, A, Bills, R, Cocquyt, CZ & Caljon, AG 1993, 'The impact of sediment pollution on biodiversity in Lake Tanganyika', Conservation Biology, vol. 7, no. 3, pp. 667-677.
Cohen, Andrew ; Bills, R. ; Cocquyt, C. Z. ; Caljon, A. G. / The impact of sediment pollution on biodiversity in Lake Tanganyika. In: Conservation Biology. 1993 ; Vol. 7, No. 3. pp. 667-677.
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