Ocean acidification reduces demersal zooplankton that reside in tropical coral reefs.

Smith, Joy N., De’ath, Glenn, Richter, Claudio, Cornils, Astrid, Hall-Spencer, Jason M. and Fabricius, Katharina E. (2016) Ocean acidification reduces demersal zooplankton that reside in tropical coral reefs. Nature Climate Change . DOI 10.1038/NCLIMATE3122.

[img] Text
nclimate3122_auproof-ORIGINAL.pdf - Published Version
Restricted to Registered users only

Download (489Kb) | Contact
[img] Text
nclimate3122-s1.pdf - Supplemental Material
Restricted to Registered users only

Download (267Kb) | Contact

Supplementary data:

Abstract

The in situ effects of ocean acidification on zooplankton communities remain largely unexplored. Using natural volcanic CO2 seep sites around tropical coral communities, we show a threefold reduction in the biomass of demersal zooplankton in high-CO2 sites compared with sites with ambient CO2. Differences were consistent across two reefs and three expeditions. Abundances were reduced in most taxonomic groups. There were no regime shifts in zooplankton community composition and no differences in fatty acid composition between CO2 levels, suggesting that ocean acidification affects the food quantity but not the quality for nocturnal plankton feeders. Emergence trap data show that the observed reduction in demersal plankton may be partly attributable to altered habitat. Ocean acidification changes coral community composition from branching to massive bouldering coral species, and our data suggest that bouldering corals represent inferior daytime shelter for demersal zooplankton. Since zooplankton represent a major source of nutrients for corals, fish and other planktivores, this ecological feedback may represent an additional mechanism of how coral reefs will be affected by ocean acidification.

Document Type: Article
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1038/NCLIMATE3122
ISSN: 1758-678X
Projects: BIOACID
Date Deposited: 20 Sep 2016 13:39
Last Modified: 20 Sep 2016 13:39
URI: http://oceanrep.geomar.de/id/eprint/33967

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...