Skip to main content
padlock icon - secure page this page is secure

Free Content Can differential bleaching and mortality among coral species offer useful indicators for assessment and management of reefs under stress?

Download Article:
(PDF 389.8 kb)
Coral reefs are increasingly subject to a variety of threats from local to global scales. The development of monitoring and assessment tools to diagnose coral reef community responses to threats would assist greatly in management of their impacts. This paper examines interspecific patterns of bleaching, mortality, and recovery of corals on reefs in Kenya, Tanzania, Mozambique, and Madagascar for one year after the 1997–98 El NiƱo. On average, 50–80% bleaching and mortality of corals occurred throughout the region. Coral tissue condition (normal, pale, bleached, and dead) was recorded for up to 1 yr after the onset of bleaching. Thirteen coral species were used for analysis. Cluster Analysis and Principal Components Analysis with factor rotation were applied to the dataset, giving two major groups of species, characterized by (a) severe bleaching followed by 100% mortality (e.g., Acropora spp., Pocillopora spp., Galaxea astreata), (b) graduated bleaching with pale tissue and low-to-moderate mortality (e.g., Porites lutea, Echinopora gemmacea, Hydnophora exesa), and one outlier with long-term persistence of bleaching (Montipora tuberculosa). These species groups based on the bleaching response are consistent with life history strategies proposed by other workers. It is proposed that observations of coral condition and bleaching in the field, interpreted in the light of life history theory, can provide a coral bioassay technique for reef monitoring and management.

21 References.

No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 01 September 2001

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • 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
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