Effects of solar PAR and UV radiation on tropical biofouling communities

Sergey V. Dobretsov, Louis Gosselin, Pei Yuan Qian

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We investigated the effect of solar ultraviolet radiation (UVR) and photosynthetically active radiation (PAR) on the development of tropical micro- and macrofouling communities for 30 d. The experimental design involved 3 treatments: full spectrum (PAR+UVR), PAR only, and minimal light (reduced PAR and UVR). Terminal restriction fragment length polymorphism analysis demonstrated that different light conditions resulted in the formation of highly different microbial communities. The lowest densities of bacteria were found under the full spectrum treatment, while the lowest densities of diatoms were found in the minimal light treatment. Macrofouling communities consisted of 13 species and differed among light treatments. In the presence of UVR, communities had low species diversity, evenness, and richness, while in minimal light and PAR treatments, communities had high species diversity, evenness, and richness. Similarity percentage (SIMPER) analysis revealed that the tubeworm Hydroides elegans, the alga Ulva (Enteromorpha) sp., and the bivalve Perna viridis were the species responsible for most of the dissimilarities in macrofouling communities among treatments. While densities of H. elegans were similar in the PAR and minimal light treatments, this polychaete had higher growth rates under minimal light conditions. We conclude that UVR and PAR directly control the development of shallow micro- and macrofouling communities by inhibiting the recruitment and growth of sensitive species and promoting the growth of resistant species, but also that these forms of solar radiation influence the surface cues available to competent larvae by altering the development of the microbial community.

Original languageEnglish
Pages (from-to)31-43
Number of pages13
JournalMarine Ecology Progress Series
Volume402
DOIs
Publication statusPublished - Mar 8 2010

Fingerprint

biofouling
photosynthetically active radiation
ultraviolet radiation
species diversity
Ulva
algae
microbial communities
microbial community
Perna viridis
Bacillariophyceae
polychaete
effect
radiation
experimental design
Polychaeta
bivalve
Bivalvia
solar radiation
restriction fragment length polymorphism
polymorphism

Keywords

  • Biofilm
  • Biofouling
  • Community structure
  • Juvenile growth
  • Larval recruitment
  • Microbial communities
  • Photosynthetically active radiation
  • South China Sea
  • Ultraviolet radiation
  • Visible light

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Effects of solar PAR and UV radiation on tropical biofouling communities. / Dobretsov, Sergey V.; Gosselin, Louis; Qian, Pei Yuan.

In: Marine Ecology Progress Series, Vol. 402, 08.03.2010, p. 31-43.

Research output: Contribution to journalArticle

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