Biol Invasions https://doi.org/10.1007/s10530-018-1767-3 ORIGINAL PAPER Non-native plants affect generalist pollinator diet overlap and foraging behavior indirectly, via impacts on native plant abundance Sandra Gillespie Elizabeth Elle Received: 2 June 2017 / Accepted: 22 May 2018 Springer International Publishing AG, part of Springer Nature 2018 Abstract Flowering invasive plants can have dra- scoparius. We further examine whether changes in matic effects on the resource landscape available to pollinator visits to the invasive and two common pollinators. Because many pollinators exhibit behav- native plants can explain changes in diet overlap. ioral plasticity in response to competitor or resource Abundance of the invasive plant and other common density, this in turn can result in impacts on ecological ﬂoral resources had strong impacts on focal bee processes such as pollination and plant reproduction. abundance, with certain species more likely to be We examine how interactions between ﬁve common present at highly invaded sites. This may be because generalist eusocial bees change across an invasion highly invaded sites tended to be embedded in forested gradient by examining how bee abundance and diet landscapes where those bees are common. Diet overlap changed with variation in both invasive plant overlap was most affected by abundance of
Biological Invasions – Springer Journals
Published: May 31, 2018
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