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 Structure
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Research Fronts
Virtual Issues
Sample Issue
For Authors
General Information
Submit Article
Author Instructions
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 LinkedIn


Article << Previous     |     Next >>   Contents Vol 47(1)

Effects of training on observer performance in assessing benthic cover by means of the manta tow technique

IR Miller and G De'ath

Marine and Freshwater Research 47(1) 19 - 26
Published: 1996


The manta tow technique is used to obtain broadscale information on the distribution of Acanthaster planci and corals on the Great Barrier Reef. A field experiment was used to investigate how experience and training affects visual estimates of benthic cover made by observers using the manta tow technique. For live coral and sandlrubble cover, experienced observers obtained significantly higher levels of precision in their estimates than inexperienced observers; training increased the precision of these estimates for both experienced and inexperienced observers. Dead coral cover was sparse (<5%), making it difficult to assess the performance of the manta tow technique for this form of benthic cover. For both live and dead coral, and for sandlrubble, the levels of agreement between observers exceeded that expected by chance by between 5 to 1 and 10 to 1.

Full text doi:10.1071/MF9960019

© CSIRO 1996

blank image
Subscriber Login

PDF (517 KB) $25
 Export Citation
Legal & Privacy | Contact Us | Help


© CSIRO 1996-2015