Climate change and elevational diversity capacity: Do weedy species take up the slack?
Climate change leads to species range shifts and consequently to changes in diversity. For many systems, increases in diversity capacity have been forecast, with spare capacity to be taken up by a pool of weedy species moved around by humans. Few tests of this hypothesis have been undertaken, and in...
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ftunstellenbosch:oai:scholar.sun.ac.za:10019.1/117517 2023-05-15T14:05:07+02:00 Climate change and elevational diversity capacity: Do weedy species take up the slack? Chown, S.L. Le Roux, P.C. Ramaswiela, T. Kalwij, J.M. Shaw, J.D. McGeoch, M.A. 2013-02-20T11:35:03Z 354084 bytes application/pdf http://hdl.handle.net/10019.1/117517 en eng Royal Society Chown, S.L., Le Roux, P.C., Ramaswiela, T., Kalwij, J.M., Shaw, J.D. and McGeoch, M.A. (2012). Climate change and elevational diversity capacity: Do weedy species take up the slack? Biology Letters 9, 20120806, 4 pages. DOI:10.1098/rsbl.2012.0806 http://hdl.handle.net/10019.1/117517 climate change elevational gradients species-energy theory species richness JournalArticles 2013 ftunstellenbosch 2021-08-31T00:09:00Z Climate change leads to species range shifts and consequently to changes in diversity. For many systems, increases in diversity capacity have been forecast, with spare capacity to be taken up by a pool of weedy species moved around by humans. Few tests of this hypothesis have been undertaken, and in many temperate systems, climate change impacts may be confounded by simultaneous increases in human-related disturbance, which also promote weedy species. Areas to which weedy species are being introduced, but with little human disturbance, are therefore ideal for testing the idea. We make predictions about how such diversity capacity increases play out across elevational gradients in non-water-limited systems. Then, using modern and historical data on the elevational range of indigenous and naturalized alien vascular plant species from the relatively undisturbed sub-Antarctic Marion Island, we show that alien species have contributed significantly to filling available diversity capacity and that increases in energy availability rather than disturbance are the probable underlying cause. Other/Unknown Material Antarc* Antarctic Marion Island Stellenbosch University: SUNScholar Research Repository Antarctic |
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Open Polar |
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Stellenbosch University: SUNScholar Research Repository |
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ftunstellenbosch |
language |
English |
topic |
climate change elevational gradients species-energy theory species richness |
spellingShingle |
climate change elevational gradients species-energy theory species richness Chown, S.L. Le Roux, P.C. Ramaswiela, T. Kalwij, J.M. Shaw, J.D. McGeoch, M.A. Climate change and elevational diversity capacity: Do weedy species take up the slack? |
topic_facet |
climate change elevational gradients species-energy theory species richness |
description |
Climate change leads to species range shifts and consequently to changes in diversity. For many systems, increases in diversity capacity have been forecast, with spare capacity to be taken up by a pool of weedy species moved around by humans. Few tests of this hypothesis have been undertaken, and in many temperate systems, climate change impacts may be confounded by simultaneous increases in human-related disturbance, which also promote weedy species. Areas to which weedy species are being introduced, but with little human disturbance, are therefore ideal for testing the idea. We make predictions about how such diversity capacity increases play out across elevational gradients in non-water-limited systems. Then, using modern and historical data on the elevational range of indigenous and naturalized alien vascular plant species from the relatively undisturbed sub-Antarctic Marion Island, we show that alien species have contributed significantly to filling available diversity capacity and that increases in energy availability rather than disturbance are the probable underlying cause. |
format |
Other/Unknown Material |
author |
Chown, S.L. Le Roux, P.C. Ramaswiela, T. Kalwij, J.M. Shaw, J.D. McGeoch, M.A. |
author_facet |
Chown, S.L. Le Roux, P.C. Ramaswiela, T. Kalwij, J.M. Shaw, J.D. McGeoch, M.A. |
author_sort |
Chown, S.L. |
title |
Climate change and elevational diversity capacity: Do weedy species take up the slack? |
title_short |
Climate change and elevational diversity capacity: Do weedy species take up the slack? |
title_full |
Climate change and elevational diversity capacity: Do weedy species take up the slack? |
title_fullStr |
Climate change and elevational diversity capacity: Do weedy species take up the slack? |
title_full_unstemmed |
Climate change and elevational diversity capacity: Do weedy species take up the slack? |
title_sort |
climate change and elevational diversity capacity: do weedy species take up the slack? |
publisher |
Royal Society |
publishDate |
2013 |
url |
http://hdl.handle.net/10019.1/117517 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Marion Island |
genre_facet |
Antarc* Antarctic Marion Island |
op_relation |
Chown, S.L., Le Roux, P.C., Ramaswiela, T., Kalwij, J.M., Shaw, J.D. and McGeoch, M.A. (2012). Climate change and elevational diversity capacity: Do weedy species take up the slack? Biology Letters 9, 20120806, 4 pages. DOI:10.1098/rsbl.2012.0806 http://hdl.handle.net/10019.1/117517 |
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1766276779804196864 |