Effects of Residence Time, Auto-Fertility and Pollinator Dependence on Reproductive Output and Spread of Alien and Native Asteraceae

Alien plants benefit from auto-fertility to spread over areas where the lack of co-evolved mutualists would otherwise limit invasion success. However, the widespread generalists among mutualists and their large geographical ranges allow alien plants to be integrated into networks. The role of reside...

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Main Authors: Anna Corli, Christine S. Sheppard
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:Plants
Subjects:
Online Access:https://www.mdpi.com/2223-7747/8/4/108
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author Anna Corli
Christine S. Sheppard
author_facet Anna Corli
Christine S. Sheppard
author_sort Anna Corli
collection DOAJ
description Alien plants benefit from auto-fertility to spread over areas where the lack of co-evolved mutualists would otherwise limit invasion success. However, the widespread generalists among mutualists and their large geographical ranges allow alien plants to be integrated into networks. The role of residence time also has to be accounted for, as it takes time for a species to spread and adapt to a new area. We investigated how residence time, auto-fertility and pollinator dependence affect reproductive output and invasion success of Asteraceae in Germany. We conducted a multi-species common-garden experiment along an alien–native continuum including 42 species of natives, archaeophytes and neophytes (casual and established), subjecting plant individuals either to free access or exclusion of pollinators. Pollinator dependence does not play a crucial role in invasion success, with most Asteraceae being able to self-fertilize. Surprisingly, both established neophytes and natives showed higher abilities to self-fertilize, while archaeophytes and casual neophytes were more attractive to pollinators. In contrast to casual neophytes, the established neophytes’ strategy was associated with a large reproductive output. Yet, auto-fertility was not associated with range size, since archaeophytes reached the largest range sizes. Elucidating how breeding systems affect invasion success is crucial for predicting and managing invasions.
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spelling doaj.art-d984ce6d22f44404b8c08ce46d9d7b372022-12-21T23:49:55ZengMDPI AGPlants2223-77472019-04-018410810.3390/plants8040108plants8040108Effects of Residence Time, Auto-Fertility and Pollinator Dependence on Reproductive Output and Spread of Alien and Native AsteraceaeAnna Corli0Christine S. Sheppard1Institute of Landscape and Plant Ecology, University of Hohenheim, August-von-Hartmann Str. 3, 70599 Stuttgart, GermanyInstitute of Landscape and Plant Ecology, University of Hohenheim, August-von-Hartmann Str. 3, 70599 Stuttgart, GermanyAlien plants benefit from auto-fertility to spread over areas where the lack of co-evolved mutualists would otherwise limit invasion success. However, the widespread generalists among mutualists and their large geographical ranges allow alien plants to be integrated into networks. The role of residence time also has to be accounted for, as it takes time for a species to spread and adapt to a new area. We investigated how residence time, auto-fertility and pollinator dependence affect reproductive output and invasion success of Asteraceae in Germany. We conducted a multi-species common-garden experiment along an alien–native continuum including 42 species of natives, archaeophytes and neophytes (casual and established), subjecting plant individuals either to free access or exclusion of pollinators. Pollinator dependence does not play a crucial role in invasion success, with most Asteraceae being able to self-fertilize. Surprisingly, both established neophytes and natives showed higher abilities to self-fertilize, while archaeophytes and casual neophytes were more attractive to pollinators. In contrast to casual neophytes, the established neophytes’ strategy was associated with a large reproductive output. Yet, auto-fertility was not associated with range size, since archaeophytes reached the largest range sizes. Elucidating how breeding systems affect invasion success is crucial for predicting and managing invasions.https://www.mdpi.com/2223-7747/8/4/108alien–native species continuumAsteraceaeauto-fertilitymulti-species experimentplant invasionpollinator dependenceresidence time
spellingShingle Anna Corli
Christine S. Sheppard
Effects of Residence Time, Auto-Fertility and Pollinator Dependence on Reproductive Output and Spread of Alien and Native Asteraceae
Plants
alien–native species continuum
Asteraceae
auto-fertility
multi-species experiment
plant invasion
pollinator dependence
residence time
title Effects of Residence Time, Auto-Fertility and Pollinator Dependence on Reproductive Output and Spread of Alien and Native Asteraceae
title_full Effects of Residence Time, Auto-Fertility and Pollinator Dependence on Reproductive Output and Spread of Alien and Native Asteraceae
title_fullStr Effects of Residence Time, Auto-Fertility and Pollinator Dependence on Reproductive Output and Spread of Alien and Native Asteraceae
title_full_unstemmed Effects of Residence Time, Auto-Fertility and Pollinator Dependence on Reproductive Output and Spread of Alien and Native Asteraceae
title_short Effects of Residence Time, Auto-Fertility and Pollinator Dependence on Reproductive Output and Spread of Alien and Native Asteraceae
title_sort effects of residence time auto fertility and pollinator dependence on reproductive output and spread of alien and native asteraceae
topic alien–native species continuum
Asteraceae
auto-fertility
multi-species experiment
plant invasion
pollinator dependence
residence time
url https://www.mdpi.com/2223-7747/8/4/108
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AT christinessheppard effectsofresidencetimeautofertilityandpollinatordependenceonreproductiveoutputandspreadofalienandnativeasteraceae