Prickly pairs: the proportion of spinescent species does not differ between islands and mainlands

Author:

Meredith Floret L1,Tindall Marianne L1,Hemmings Frank A2,Moles Angela T1

Affiliation:

1. Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, UNSW Australia, Sydney, NSW, Australia

2. John T. Waterhouse Herbarium, School of Biology, Earth and Environmental Sciences, UNSW Australia, Sydney, NSW, Australia

Abstract

Abstract Aims Organisms on islands are thought to escape biotic pressure and lose defensive capabilities. However, broadscale, evidence-based tests of this idea are rare. In this study, we asked: (i) whether the proportion of spinescent plant species differed between islands and mainlands and (ii) whether the proportion of spinescent species increased with increasing island area and with decreasing island distance to mainland. Methods We compiled species lists for 18 island–mainland pairs around Australia. We classified 1129 plant species as spinescent or non-spinescent using published species descriptions. Important Findings There was no significant difference between the proportion of spinescent species found on islands and on mainlands. Proportions of spinescent species were not significantly related to island area or distance to mainland. Our results suggest that spinescence is just as important to island plants as it is to mainland plants, even for plants inhabiting small or distal islands. This is unexpected, given prevailing thought and previous work on island–mainland comparisons. Our study demonstrates the importance of testing well-accepted yet untested ideas.

Funder

Australian Research Council Discovery

Publisher

Oxford University Press (OUP)

Subject

Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics

Reference80 articles.

1. Cyanogenic plants in the Galápagos Islands: ecological and evolutionary aspects;Adsersen;Oikos,1993

2. Enemy release? An experiment with congeneric plant pairs and diverse above- and belowground enemies;Agrawal;Ecology,2005

3. Herbivory causes increases in leaf spinescence and fluctuating asymmetry as a mechanism of delayed induced resistance in a tropical savanna tree;Alves-Silva;Plant Ecol Evol,2016

4. Atlas of Living Australia (2015) Atlas of Living Australia. http://www.ala.org.au (25 November 2014, date late accessed).

5. Australian Biological Resources Study (2015) Flora of Australia Online. http://www.environment.gov.au/biodiversity/abrs/online-resources/flora/main/index.html (25 November 2014, date late accessed).

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