4.7 Article

Phosphorus and nitrogen effects on microbial euendolithic communities and their bioerosion rates

期刊

MARINE POLLUTION BULLETIN
卷 64, 期 3, 页码 602-613

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2011.12.013

关键词

Calcium carbonate balance; Cyanobacteria; Eutrophication; Green algae; Microbial euendoliths; Nutrient limitation

资金

  1. Wildlife Conservation Society (WCS)
  2. Fundacao para a Ciencia e a Tecnologia, Portugal
  3. III Communitary Support Board [SFRH/BD/789/2000, SFRH/BPD/34634/2007]
  4. Hanse Institute for Advanced Studies, Delmenhorst

向作者/读者索取更多资源

Cages and fertilizers were used at Glover's Atoll, Belize to test the relative importance of nitrogen (N) and phosphorus (P) to microbial euendolithic communities (bacteria, algae and fungi) and their bioerosion rates of Strombus gigas shells after 56-days of exposure. By the end of the experiment, the abundance of green algae was higher than cyanobacteria and fungi in N and N + P treatments, although green algae did not increase proportionally with increasing N concentrations, suggesting that green algae were co-limited by P and N. In contrast, cyanobacteria abundance increased with increasing P concentration, suggesting that cyanobacteria were P-limited. Fungi were not significantly affected by the addition of nutrients. Microbioerosion rates in the N and N + P treatments were 2-times greater than rates in the P treatment and 15-times greater than the control treatment. Results demonstrate that increased nutrient concentrations on coral reefs may increase microbioerosion rates, and variations in nutrient ratios can modify microborers community composition. (C) 2011 Elsevier Ltd. All rights reserved.

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