NDLI: From the backyard to the backcountry: how ecological and biological traits explain the escape of garden plants into Mediterranean old fields

Content Provider	Springer Nature Link
Author	Marco, Audrey Lavergne, Sébastien Dutoit, Thierry Bertaudiere Montes, Valérie
Copyright Year	2009
Abstract	To explain current ornamental plant invasions, or predict future ones, it is necessary to determine which factors increase the probability of an alien species becoming invasive. Here, we focused on the early phases of ornamental plant invasion in order to identify which plant features and cultivation practices may favor the escape of ornamental plants from domestic gardens to abandoned agricultural land sites in the Mediterranean Region. We used an original approach which consisted in visiting 120 private gardens in an urbanizing rural area of the French Mediterranean backcountry, and then visited surrounding old fields to determine which planted species had escaped out of the gardens. We built a database of 407 perennial ornamental alien species (most of which were animal-dispersed), and determined nineteen features that depicted the strength of species’ propagule pressure within gardens, the match between species requirements and local physical environment, and each species’ reproductive characteristics. Using standard and phylogenetic logistic regression, we found that ornamental alien plants were more likely to have escaped if they were planted in gardens’ margins, if they had a preference for dry soil, were tolerant to high-pH or pH-indifferent, and if they showed a capacity for clonal growth. Focusing only on animal-dispersed plants, we found that alien plants were more likely to have escaped if they were abundant in gardens and showed preference for dry soil. This suggests that gardening practices have a primary impact on the probability of a species to escape from cultivation, along with species pre-adaptation to local soil conditions, and capacity of asexual reproduction. Our results may have important implications for the implementation of management practices and awareness campaigns in order to limit ornamental plants to becoming invasive species in Mediterranean landscapes.
Starting Page	761
Ending Page	779
Page Count	19
File Format	PDF
ISSN	13873547
Journal	Biological Invasions
Volume Number	12
Issue Number	4
e-ISSN	15731464
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-05-31
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biological invasions Ornamental plants Propagule pressure Pre-adaptation Phylogenetic regression Developmental Biology Ecology Plant Sciences Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics

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