Elevated CO2 affects predator-prey interactions through altered performance

Allan, Bridie J.M., Domenici, Paolo, McCormick, Mark I., Watson, Sue-Ann, and Munday, Philip L. (2013) Elevated CO2 affects predator-prey interactions through altered performance. PLoS One, 8 (3). e58520. pp. 1-7.

[img]
Preview
PDF (Published Version) - Published Version
Available under License Creative Commons Attribution.

Download (323kB)
View at Publisher Website: http://dx.doi.org/10.1371/journal.pone.0...
 
63
105


Abstract

Recent research has shown that exposure to elevated carbon dioxide (CO₂) affects how fishes perceive their environment, affecting behavioral and cognitive processes leading to increased prey mortality. However, it is unclear if increased mortality results from changes in the dynamics of predator-prey interactions or due to prey increasing activity levels. Here we demonstrate that ocean pCO₂ projected to occur by 2100 significantly effects the interactions of a predator-prey pair of common reef fish: the planktivorous damselfish Pomacentrus amboinensis and the piscivorous dottyback Pseudochromis fuscus. Prey exposed to elevated CO₂ (880 μatm) or a present-day control (440 μatm) interacted with similarly exposed predators in a cross-factored design. Predators had the lowest capture success when exposed to elevated CO₂ and interacting with prey exposed to present-day CO₂. Prey exposed to elevated CO₂ had reduced escape distances and longer reaction distances compared to prey exposed to present-day CO₂ conditions, but this was dependent on whether the prey was paired with a CO₂ exposed predator or not. This suggests that the dynamics of predator-prey interactions under future CO₂ environments will depend on the extent to which the interacting species are affected and can adapt to the adverse effects of elevated CO₂.

Item ID: 26930
Item Type: Article (Research - C1)
ISSN: 1932-6203
Funders: Australian Research Council (ARC)
Projects and Grants: CE0561432
Date Deposited: 15 May 2013 09:31
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050101 Ecological Impacts of Climate Change @ 50%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 50%
96 ENVIRONMENT > 9603 Climate and Climate Change > 960399 Climate and Climate Change not elsewhere classified @ 50%
Downloads: Total: 105
Last 12 Months: 1
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page