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https://hdl.handle.net/2440/51171
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Type: | Journal article |
Title: | Synergistic effects of climate change and local stressors: CO₂ and nutrient-driven change in subtidal rocky habitats |
Other Titles: | Synergistic effects of climate change and local stressors: CO(2) and nutrient-driven change in subtidal rocky habitats |
Author: | Russell, B. Thompson, J. Falkenberg, L. Connell, S. |
Citation: | Global Change Biology, 2009; 15(9):2153-2162 |
Publisher: | Blackwell Science Ltd |
Issue Date: | 2009 |
ISSN: | 1354-1013 1365-2486 |
Abstract: | Climate-driven change represents the cumulative effect of global through local-scale conditions, and understanding their manifestation at local scales can empower local management. Change in the dominance of habitats is often the product of local nutrient pollution that occurs at relatively local scales (i.e. catchment scale), a critical scale of management at which global impacts will manifest. We tested whether forecasted global-scale change [elevated carbon dioxide (CO2) and subsequent ocean acidification] and local stressors (elevated nutrients) can combine to accelerate the expansion of filamentous turfs at the expense of calcifying algae (kelp understorey). Our results not only support this model of future change, but also highlight the synergistic effects of future CO2 and nutrient concentrations on the abundance of turfs. These results suggest that global and local stressors need to be assessed in meaningful combinations so that the anticipated effects of climate change do not create the false impression that, however complex, climate change will produce smaller effects than reality. These findings empower local managers because they show that policies of reducing local stressors (e.g. nutrient pollution) can reduce the effects of global stressors not under their governance (e.g. ocean acidification). The connection between research and government policy provides an example whereby knowledge (and decision making) across local through global scales provides solutions to some of the most vexing challenges for attaining social goals of sustainability, biological conservation and economic development. |
Keywords: | carbon dioxide climate change CO2 coralline algae habitat resilience turf-forming algae |
Description: | Journal compilation © 2009 Blackwell Publishing. Copyright © 2009 John Wiley & Sons, Inc. All Rights Reserved |
DOI: | 10.1111/j.1365-2486.2009.01886.x |
Published version: | http://dx.doi.org/10.1111/j.1365-2486.2009.01886.x |
Appears in Collections: | Aurora harvest Earth and Environmental Sciences publications Environment Institute Leaders publications Environment Institute publications |
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