Skip to main content

Anthropogenic spatial and temporal changes in the aquatic macroinvertebrate assemblages of the lower Mvoti River, KwaZulu-Natal, South Africa

Buy Article:

$55.00 plus tax (Refund Policy)

Industrial and urban impacts on the lower reaches of the Mvoti River were studied using changes in macroinvertebrate community structures as indicators of environmental change. Macroinvertebrates were sampled during high- and low-flows in 2005 in the lower Mvoti River and its tributaries. Uni- and multivariate analyses revealed significant spatial differences between sites on the Mvoti River and those on the tributaries, as well as between sites on the Mvoti above and below the confluences of these tributaries. No significant trends in temporal distributions were recorded. Spatial differentiation was attributed to the abundance of insensitive taxa such as chironimids and oligochaetes at impacted sites. Increased salts and chemical oxygen demand, with lower dissolved oxygen concentrations, were identified as the driving water quality parameters affecting macroinvertebrate community structures. Comparison of macroinvertebrate structures in the Mvoti River with those in the biogeographically similar Mhlathuze River indicated the absence of sensitive taxa such as Atyidae, Naucoridae, Gomphidae and Leptoceridae from the Mvoti.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: CHLORIDE; DISSOLVED OXYGEN; MULTIVARIATE ANALYSIS; WATER QUALITY

Document Type: Research Article

Publication date: 2010-05-01

More about this publication?
  • Co-Published by NISC and Taylor & Francis - Subscriber access available here
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more