A native annual forb locally excludes a closely related introduced species that co-occurs in oak-savanna habitat remnants.

Despite the ubiquity of introduced species, their long-term impacts on native plant abundance and diversity remain poorly understood. Coexistence theory offers a tool for advancing this understanding by providing a framework to link short-term individual measurements with long-term population dynamics by directly quantifying the niche and average fitness differences between species. We observed that a pair of closely related and functionally similar annual plants with different origins-native and introduced -co-occur at the community scale but rarely at the local scale of direct interaction.

Fluidigm2PURC: Automated processing and haplotype inference for double-barcoded PCR amplicons.

Premise Of The Study: Targeted enrichment strategies for phylogenomic inference are a time- and cost-efficient way to collect DNA sequence data for large numbers of individuals at multiple, independent loci. Automated and reproducible processing of these data is a crucial step for researchers conducting phylogenetic studies.

Methods And Results: We present Fluidigm2PURC, an open source Python utility for processing paired-end Illumina data from double-barcoded PCR amplicons.

Scent matters: differential contribution of scent to insect response in flowers with insect vs. wind pollination traits.

Background And Aims: Growing experimental evidence that floral scent is a key contributor to pollinator attraction supports its investigation as a component of the suite of floral traits that result from pollinator-mediated selection. Yet, the fate of floral scent during the transition out of biotic into abiotic pollination has rarely been tested. In the case of wind pollination, this is due not only to its rarer incidence among flowering plants compared with insect pollination, but also to the scarcity of systems amenable to genus-level comparisons.