The duality of ocean acidification as a resource and a stressor
Ecologically dominant species often define ecosystem states, but as human disturbances intensify, their subordinate counterparts increasingly displace them. We consider the duality of disturbance by examining how environmental drivers can simultaneously act as a stressor to dominant species and as a...
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Online Access: | https://epubs.scu.edu.au/esm_pubs/3514 https://doi.org/10.1002/ecy.2209 |
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ftsoutherncu:oai:epubs.scu.edu.au:esm_pubs-4542 2023-05-15T17:51:22+02:00 The duality of ocean acidification as a resource and a stressor Connell, Sean D Doubleday, Zoë A Foster, Nicole R Hamlyn, Sarah B Harley, Christopher DG Helmuth, Brian Kelaher, Brendan P Nagelkerken, Ivan Rodgers, Kirsten L Sarà, Gianluca Russell, Bayden D 2018-01-01T08:00:00Z https://epubs.scu.edu.au/esm_pubs/3514 https://doi.org/10.1002/ecy.2209 unknown ePublications@SCU School of Environment, Science and Engineering Papers CO2; calcifying herbivores; climate change; kelp forest; phase shift; turf algae Environmental Sciences article 2018 ftsoutherncu https://doi.org/10.1002/ecy.2209 2019-08-06T13:16:24Z Ecologically dominant species often define ecosystem states, but as human disturbances intensify, their subordinate counterparts increasingly displace them. We consider the duality of disturbance by examining how environmental drivers can simultaneously act as a stressor to dominant species and as a resource to subordinates. Using a model ecosystem, we demonstrate that CO2 -driven interactions between species can account for such reversals in dominance; i.e., the displacement of dominants (kelp forests) by subordinates (turf algae). We established that CO2 enrichment had a direct positive effect on productivity of turfs, but a negligible effect on kelp. CO2 enrichment further suppressed the abundance and feeding rate of the primary grazer of turfs (sea urchins), but had an opposite effect on the minor grazer (gastropods). Thus, boosted production of subordinate producers, exacerbated by a net reduction in its consumption by primary grazers, accounts for community change (i.e., turf displacing kelp). Ecosystem collapse, therefore, is more likely when resource enrichment alters competitive dominance of producers, and consumers fail to compensate. By recognizing such duality in the responses of interacting species to disturbance, which may stabilize or exacerbate change, we can begin to understand how intensifying human disturbances determine whether or not ecosystems undergo phase shifts. Article in Journal/Newspaper Ocean acidification Southern Cross University: epublications@SCU Ecology 99 5 1005 1010 |
institution |
Open Polar |
collection |
Southern Cross University: epublications@SCU |
op_collection_id |
ftsoutherncu |
language |
unknown |
topic |
CO2; calcifying herbivores; climate change; kelp forest; phase shift; turf algae Environmental Sciences |
spellingShingle |
CO2; calcifying herbivores; climate change; kelp forest; phase shift; turf algae Environmental Sciences Connell, Sean D Doubleday, Zoë A Foster, Nicole R Hamlyn, Sarah B Harley, Christopher DG Helmuth, Brian Kelaher, Brendan P Nagelkerken, Ivan Rodgers, Kirsten L Sarà, Gianluca Russell, Bayden D The duality of ocean acidification as a resource and a stressor |
topic_facet |
CO2; calcifying herbivores; climate change; kelp forest; phase shift; turf algae Environmental Sciences |
description |
Ecologically dominant species often define ecosystem states, but as human disturbances intensify, their subordinate counterparts increasingly displace them. We consider the duality of disturbance by examining how environmental drivers can simultaneously act as a stressor to dominant species and as a resource to subordinates. Using a model ecosystem, we demonstrate that CO2 -driven interactions between species can account for such reversals in dominance; i.e., the displacement of dominants (kelp forests) by subordinates (turf algae). We established that CO2 enrichment had a direct positive effect on productivity of turfs, but a negligible effect on kelp. CO2 enrichment further suppressed the abundance and feeding rate of the primary grazer of turfs (sea urchins), but had an opposite effect on the minor grazer (gastropods). Thus, boosted production of subordinate producers, exacerbated by a net reduction in its consumption by primary grazers, accounts for community change (i.e., turf displacing kelp). Ecosystem collapse, therefore, is more likely when resource enrichment alters competitive dominance of producers, and consumers fail to compensate. By recognizing such duality in the responses of interacting species to disturbance, which may stabilize or exacerbate change, we can begin to understand how intensifying human disturbances determine whether or not ecosystems undergo phase shifts. |
format |
Article in Journal/Newspaper |
author |
Connell, Sean D Doubleday, Zoë A Foster, Nicole R Hamlyn, Sarah B Harley, Christopher DG Helmuth, Brian Kelaher, Brendan P Nagelkerken, Ivan Rodgers, Kirsten L Sarà, Gianluca Russell, Bayden D |
author_facet |
Connell, Sean D Doubleday, Zoë A Foster, Nicole R Hamlyn, Sarah B Harley, Christopher DG Helmuth, Brian Kelaher, Brendan P Nagelkerken, Ivan Rodgers, Kirsten L Sarà, Gianluca Russell, Bayden D |
author_sort |
Connell, Sean D |
title |
The duality of ocean acidification as a resource and a stressor |
title_short |
The duality of ocean acidification as a resource and a stressor |
title_full |
The duality of ocean acidification as a resource and a stressor |
title_fullStr |
The duality of ocean acidification as a resource and a stressor |
title_full_unstemmed |
The duality of ocean acidification as a resource and a stressor |
title_sort |
duality of ocean acidification as a resource and a stressor |
publisher |
ePublications@SCU |
publishDate |
2018 |
url |
https://epubs.scu.edu.au/esm_pubs/3514 https://doi.org/10.1002/ecy.2209 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
School of Environment, Science and Engineering Papers |
op_doi |
https://doi.org/10.1002/ecy.2209 |
container_title |
Ecology |
container_volume |
99 |
container_issue |
5 |
container_start_page |
1005 |
op_container_end_page |
1010 |
_version_ |
1766158494420959232 |