Abstract Detail



Biodiversity Informatics & Herbarium Digitization

Berg, Colette [1].

Phenological Advancement in Triodanis perfoliata (Campanulaceae) across North America.

Phenological advancement driven by climate warming has been widely documented for numerous species across the world. In particular, the digitization of herbarium records has increased the viability of long-term spatial and temporal meta-analyses of flowering time shifts. T. perfoliata is a common annual herb with a native range stretching from Canada to the Caribbean, making it an ideal species to investigate wide-ranging phenological responses to climate change. Using data from 125 herbaria across hundreds of localities, we found that flowering time in T. perfoliata has advanced across latitudes and elevations in North America from 1880 to 2017. Mean fruiting time has advanced with greater magnitude, implying that the total reproductive window for T. perfoliata may be shrinking temporally. This may have implications for the breeding system as T. perfoliata has a mixed cleistogamous mating system. T. perfoliata produces cleistogamous selfing flowers and open flowers with the potential for outcrossing. It primarily produces cleistogamous flowers at the beginning and end of its reproductive window, and produces open flowers in the middle of its reproductive window. Several studies have examined species at discrete points over time, however our work examines how phenological patterns vary temporally across a large geographic range.


1 - Southeast Missouri State, Biology, 1 University Plaza, Cape Girardeau, MO, MO, 67301, USA

Keywords:
phenology
Herbaria
Climate change
Campanulaceae
North America.

Presentation Type: Oral Paper
Number:
Abstract ID:489
Candidate for Awards:None


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