Reproductive output of the rare plant Arctomecon californica does not appear to be limited by its floral visitor community

Plant Ecology
By: , and 

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Abstract

The majority of plants rely on animal-mediated pollination for reproduction. Reductions in pollinator visitations can lead to pollen limitation and declines in seed production. Arctomecon californica, the Las Vegas bearpoppy, is a rare plant native to the northeastern Mojave Desert. It is pollinator dependent for reproduction as it is self-incompatible, but associated pollinator populations can fluctuate greatly year to year. We therefore investigated if the reproductive output of A. californica is reduced in a year with lower pollinator visitation (2022) compared to a year when visitors were more abundant (2023). We documented the visiting bee community across both years and compared rates of A. californica seed fertilization and development across populations and between the two years. We collected and identified bees from 18 genera visiting A. californica flowers over the two years, with significant differences in the bee communities between years. There were significantly fewer overall bee visits to A. californica flowers in 2022 compared to 2023, but we found no impact on reproductive output, with overall high rates of seed production in both years.

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Publication type Article
Publication Subtype Journal Article
Title Reproductive output of the rare plant Arctomecon californica does not appear to be limited by its floral visitor community
Series title Plant Ecology
DOI 10.1007/s11258-025-01532-y
Edition Online First
Publication Date May 27, 2025
Year Published 2025
Language English
Publisher Springer
Contributing office(s) Western Ecological Research Center
Country United States
State Nevada
County Clark County
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