Future herbivory: the indirect effects of enriched CO₂ may rival its direct effects
Variation in rates of herbivory may be driven by direct effects of the abiotic environment on grazers, as well as indirect effects mediated by their food. Disentangling these direct and indirect effects is of fundamental importance for ecological forecasts of changing climate on species interactions...
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Online Access: | http://hdl.handle.net/2440/81639 https://doi.org/10.3354/meps10491 |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/81639 2023-12-17T10:47:55+01:00 Future herbivory: the indirect effects of enriched CO₂ may rival its direct effects Future herbivory: the indirect effects of enriched CO(2) may rival its direct effects Falkenberg, L. Russell, B. Connell, S. 2013 http://hdl.handle.net/2440/81639 https://doi.org/10.3354/meps10491 en eng Inter-research ARC Marine Ecology: Progress Series, 2013; 492:85-95 0171-8630 1616-1599 http://hdl.handle.net/2440/81639 doi:10.3354/meps10491 Russell, B. [0000-0003-1282-9978] Connell, S. [0000-0002-5350-6852] © Inter-Research 2013 http://dx.doi.org/10.3354/meps10491 Ocean acidification Carbon dioxide Climate change Turf-forming algae Habitat loss Phase-shifts Journal article 2013 ftunivadelaidedl https://doi.org/10.3354/meps10491 2023-11-20T23:27:34Z Variation in rates of herbivory may be driven by direct effects of the abiotic environment on grazers, as well as indirect effects mediated by their food. Disentangling these direct and indirect effects is of fundamental importance for ecological forecasts of changing climate on species interactions and their influence on biogenic habitat. Whilst elevated atmospheric CO2 may have direct effects on grazers with calcareous structures via ‘ocean acidification’, it may also have indirect effects via changes caused to their food. In our study we initially tested, and confirmed, that enriched CO2 altered per capita rates of grazing before assessing the relative importance of indirect and direct effects in driving this response. Our results eliminated the model of a direct effect of CO2 enrichment on the grazers themselves and supported the model of an indirect effect driven by a change in the food (i.e. turf algae). We suggest that this indirect effect manifested as grazers responded to the increased nitrogen content (i.e. %N) of algal tissue that resulted under CO2 enrichment. Understanding such indirect effects of modified environmental conditions provide important mechanistic links between climate conditions and the ecological processes they influence. Laura J. Falkenberg, Bayden D. Russell, Sean D. Connell Article in Journal/Newspaper Ocean acidification The University of Adelaide: Digital Library Marine Ecology Progress Series 492 85 95 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Ocean acidification Carbon dioxide Climate change Turf-forming algae Habitat loss Phase-shifts |
spellingShingle |
Ocean acidification Carbon dioxide Climate change Turf-forming algae Habitat loss Phase-shifts Falkenberg, L. Russell, B. Connell, S. Future herbivory: the indirect effects of enriched CO₂ may rival its direct effects |
topic_facet |
Ocean acidification Carbon dioxide Climate change Turf-forming algae Habitat loss Phase-shifts |
description |
Variation in rates of herbivory may be driven by direct effects of the abiotic environment on grazers, as well as indirect effects mediated by their food. Disentangling these direct and indirect effects is of fundamental importance for ecological forecasts of changing climate on species interactions and their influence on biogenic habitat. Whilst elevated atmospheric CO2 may have direct effects on grazers with calcareous structures via ‘ocean acidification’, it may also have indirect effects via changes caused to their food. In our study we initially tested, and confirmed, that enriched CO2 altered per capita rates of grazing before assessing the relative importance of indirect and direct effects in driving this response. Our results eliminated the model of a direct effect of CO2 enrichment on the grazers themselves and supported the model of an indirect effect driven by a change in the food (i.e. turf algae). We suggest that this indirect effect manifested as grazers responded to the increased nitrogen content (i.e. %N) of algal tissue that resulted under CO2 enrichment. Understanding such indirect effects of modified environmental conditions provide important mechanistic links between climate conditions and the ecological processes they influence. Laura J. Falkenberg, Bayden D. Russell, Sean D. Connell |
format |
Article in Journal/Newspaper |
author |
Falkenberg, L. Russell, B. Connell, S. |
author_facet |
Falkenberg, L. Russell, B. Connell, S. |
author_sort |
Falkenberg, L. |
title |
Future herbivory: the indirect effects of enriched CO₂ may rival its direct effects |
title_short |
Future herbivory: the indirect effects of enriched CO₂ may rival its direct effects |
title_full |
Future herbivory: the indirect effects of enriched CO₂ may rival its direct effects |
title_fullStr |
Future herbivory: the indirect effects of enriched CO₂ may rival its direct effects |
title_full_unstemmed |
Future herbivory: the indirect effects of enriched CO₂ may rival its direct effects |
title_sort |
future herbivory: the indirect effects of enriched co₂ may rival its direct effects |
publisher |
Inter-research |
publishDate |
2013 |
url |
http://hdl.handle.net/2440/81639 https://doi.org/10.3354/meps10491 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
http://dx.doi.org/10.3354/meps10491 |
op_relation |
ARC Marine Ecology: Progress Series, 2013; 492:85-95 0171-8630 1616-1599 http://hdl.handle.net/2440/81639 doi:10.3354/meps10491 Russell, B. [0000-0003-1282-9978] Connell, S. [0000-0002-5350-6852] |
op_rights |
© Inter-Research 2013 |
op_doi |
https://doi.org/10.3354/meps10491 |
container_title |
Marine Ecology Progress Series |
container_volume |
492 |
container_start_page |
85 |
op_container_end_page |
95 |
_version_ |
1785571927125917696 |