Factors influencing algal blooms on tropical reefs with an emphasis on herbivory, nutrients and invasive species
Smith JE. 2003. Factors influencing algal blooms on tropical reefs with an emphasis on herbivory, nutrients and invasive species. University of Hawaii
Algal blooms on tropical reefs have become increasingly common over the last several decades. Several different types of algal blooms have been identified on reefs in the Hawaiian Islands including multispecies algal assemblages, monospecific algal blooms and seasonal or ephemeral blooms. This study sought to determine the causes of these different types of algal blooms by conducting both field and laboratory experiments and quantitative field assessments. In a factorial nutrient enrichment and herbivore exclusion experiment conducted for 6 months on the island of Hawaii significant changes in algal biomass, community structure, sediment accumulation and mobile microinvertebrate abundance were found. Results of this study show that benthic reef communities can change rapidly in response to changes in both top down and bottom up factors. Across the Hawaiian islands, a total of five species of nonindigenous algae can now be considered highly successful. Detailed studies on the ecology of select nonindigenous marine algae have identified particular concerns and highlighted the need for management action.
- Type
- Academic
- Authors
- Smith, Jennifer
- Date of Issue
- 2003-12
- Publisher
- University of Hawaii
- Units
- ALKA , PACN
- Keywords
- Algal Blooms, benthic reef community, Cladophora sericea, Community Structure, Dissertation, Eutrophication, Exotic Species, Hawaii, Introduced Species, invertebrate abundance, Maui, microinvertebrate, Oahu, Sediment accumulation