Species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world
Available online 1 November 2015 Current trends in habitat loss have been forecast to accelerate under anticipated global change, thereby focusing conservation attention on identifying the circumstances under which key species interactions retard habitat loss. Urbanised coastlines are associated wit...
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/106806 2023-12-17T10:47:57+01:00 Species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world Falkenberg, L. Connell, S. Coffee, O. Ghedini, G. Russell, B. 2015 application/pdf http://hdl.handle.net/2440/106806 https://doi.org/10.1016/j.gecco.2015.10.003 en eng Elsevier BV http://purl.org/au-research/grants/arc/FT0991953 http://purl.org/au-research/grants/arc/DP150104263 Global Ecology and Conservation, 2015; 4:549-558 2351-9894 http://hdl.handle.net/2440/106806 doi:10.1016/j.gecco.2015.10.003 Connell, S. [0000-0002-5350-6852] Russell, B. [0000-0003-1282-9978] © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). http://dx.doi.org/10.1016/j.gecco.2015.10.003 Kelp ocean acidification phase-shift warming Journal article 2015 ftunivadelaidedl https://doi.org/10.1016/j.gecco.2015.10.003 2023-11-20T23:26:58Z Available online 1 November 2015 Current trends in habitat loss have been forecast to accelerate under anticipated global change, thereby focusing conservation attention on identifying the circumstances under which key species interactions retard habitat loss. Urbanised coastlines are associated with broad-scale loss of kelp canopies and their replacement by less productive mats of algal turf, a trend predicted to accelerate under ocean acidification and warming (i.e. enhanced CO₂ and temperature). Here we use kelp forests as a model system to test whether efforts to maintain key species interactions can maintain habitat integrity under forecasted conditions. First, we assessed whether increasing intensity of local human activity is associated with more extensive turf mats and sparser canopies via structured field observations. Second, we experimentally tested the hypothesis that intact canopies can resist turf expansion under enhanced CO2 and temperature in large mesocosms. In the field, there was a greater proportion of turf patches on urbanised coasts of South Australia than in agricultural and urban catchments in which there was a greater proportion of canopy-forming algae. Mesocosm experiments revealed this expansion of turfs is likely to accelerate under increases in CO₂ and temperature, but may be limited by the presence of intact canopies. We note that even in the presence of canopy, increases in CO₂ and temperature facilitate greater turf covers than occurs under contemporary conditions. The influence of canopy would likely be due to shading of the understorey turfs which, in turn, can modify their photosynthetic activity. These results suggest that resistance of habitat to change under human-dominated conditions may be managed via the retention of key species and their interactions. Management that directly reduces the disturbance of habitat-forming organisms (e.g. harvesting) or reverses loss through restoration may, therefore, reinforce habitat resistance in an increasingly stressful world. Laura ... Article in Journal/Newspaper Ocean acidification The University of Adelaide: Digital Library Global Ecology and Conservation 4 549 558 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Kelp ocean acidification phase-shift warming |
spellingShingle |
Kelp ocean acidification phase-shift warming Falkenberg, L. Connell, S. Coffee, O. Ghedini, G. Russell, B. Species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world |
topic_facet |
Kelp ocean acidification phase-shift warming |
description |
Available online 1 November 2015 Current trends in habitat loss have been forecast to accelerate under anticipated global change, thereby focusing conservation attention on identifying the circumstances under which key species interactions retard habitat loss. Urbanised coastlines are associated with broad-scale loss of kelp canopies and their replacement by less productive mats of algal turf, a trend predicted to accelerate under ocean acidification and warming (i.e. enhanced CO₂ and temperature). Here we use kelp forests as a model system to test whether efforts to maintain key species interactions can maintain habitat integrity under forecasted conditions. First, we assessed whether increasing intensity of local human activity is associated with more extensive turf mats and sparser canopies via structured field observations. Second, we experimentally tested the hypothesis that intact canopies can resist turf expansion under enhanced CO2 and temperature in large mesocosms. In the field, there was a greater proportion of turf patches on urbanised coasts of South Australia than in agricultural and urban catchments in which there was a greater proportion of canopy-forming algae. Mesocosm experiments revealed this expansion of turfs is likely to accelerate under increases in CO₂ and temperature, but may be limited by the presence of intact canopies. We note that even in the presence of canopy, increases in CO₂ and temperature facilitate greater turf covers than occurs under contemporary conditions. The influence of canopy would likely be due to shading of the understorey turfs which, in turn, can modify their photosynthetic activity. These results suggest that resistance of habitat to change under human-dominated conditions may be managed via the retention of key species and their interactions. Management that directly reduces the disturbance of habitat-forming organisms (e.g. harvesting) or reverses loss through restoration may, therefore, reinforce habitat resistance in an increasingly stressful world. Laura ... |
format |
Article in Journal/Newspaper |
author |
Falkenberg, L. Connell, S. Coffee, O. Ghedini, G. Russell, B. |
author_facet |
Falkenberg, L. Connell, S. Coffee, O. Ghedini, G. Russell, B. |
author_sort |
Falkenberg, L. |
title |
Species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world |
title_short |
Species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world |
title_full |
Species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world |
title_fullStr |
Species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world |
title_full_unstemmed |
Species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world |
title_sort |
species interactions can maintain resistance of subtidal algal habitats to an increasingly modified world |
publisher |
Elsevier BV |
publishDate |
2015 |
url |
http://hdl.handle.net/2440/106806 https://doi.org/10.1016/j.gecco.2015.10.003 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
http://dx.doi.org/10.1016/j.gecco.2015.10.003 |
op_relation |
http://purl.org/au-research/grants/arc/FT0991953 http://purl.org/au-research/grants/arc/DP150104263 Global Ecology and Conservation, 2015; 4:549-558 2351-9894 http://hdl.handle.net/2440/106806 doi:10.1016/j.gecco.2015.10.003 Connell, S. [0000-0002-5350-6852] Russell, B. [0000-0003-1282-9978] |
op_rights |
© 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
op_doi |
https://doi.org/10.1016/j.gecco.2015.10.003 |
container_title |
Global Ecology and Conservation |
container_volume |
4 |
container_start_page |
549 |
op_container_end_page |
558 |
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1785571982608171008 |