CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Marine & Freshwater Research   
Marine & Freshwater Research
Journal Banner
  Advances in the Aquatic Sciences
blank image Search
blank image blank image
blank image
  Advanced Search

Journal Home
About the Journal
Editorial Board
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Research Fronts
Sample Issue
For Authors
General Information
Instructions to Authors
Submit Article
Open Access
For Referees
General Information
Review an Article
Referee Guidelines
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter youtube


Article << Previous     |         Contents Vol 37(2)

Rapid biological assay and limitations in macrophyte ecotoxicology: A review

KH Browner

Australian Journal of Marine and Freshwater Research 37(2) 297 - 308
Published: 1986


Rapid biological assays may be attractive for monitoring toxicity in effluents and trade wastes where mixtures of toxins may have complex additive or antagonistic effects but they are of very little use in assessing the effect of toxins on aquatic macrophytes in flowing water because the importance of the pattern of concentration and period of exposure is often neglected. In particular, there is an alarming scarcity of data for gauging the effect of toxins on submerged aquatic macrophytes. Their response to many photosynthetic inhibitors is complicated at low times of exposure by their resilience; and at low concentrations by the protective and competitive effects of epiphytes. The availance (concentration time product, or integral of concentration with respect to time) is a useful and convenient measure of toxic effect, but only for pulses of moderate concentration and duration. It is of very limited use for assessing the effects of toxins on macrophytes in river systems, where the pattern of exposure is often extreme. The pattern is determined by processes of dispersion and dilution, together with rates of dissipation and inactivation of the toxin. Therefore all these factors should be examined in any toxicity-testing program. In addition, since extremely low concentrations of some inhibitors are deleterious for macrophytes, background contamination from diffuse sources must also be considered.

Full text doi:10.1071/MF9860297

© CSIRO 1986

blank image
Subscriber Login

PDF (622 KB) $25
 Export Citation
Legal & Privacy | Contact Us | Help


© CSIRO 1996-2015