Herbarium data accurately predict the timing and duration of population‐level flowering displays

作者：Isaac Park, Tadeo Ramírez-Parada, Sydne Record, Charles C. Davis, Aaron M. Ellison, Susan J. Mazer · 发表于：Ecography · 年份：2024 · DOI：10.1111/ecog.06961 · 被引用次数：11 · 研究领域：Ecology and Vegetation Dynamics Studies、Species Distribution and Climate Change、Plant and animal studies

Forecasting the impacts of changing climate on the phenology of plant populations is essential for anticipating and managing potential ecological disruptions to biotic communities. Herbarium specimens enable assessments of plant phenology across broad spatiotemporal scales. However, specimens are collected opportunistically, and it is unclear whether their collection dates – used as proxies of phenological stages – are closest to the onset, peak, or termination of a phenophase, or whether sampled individuals represent early, average, or late occurrences in their populations. Despite this, no studies have assessed whether these uncertainties limit the utility of herbarium specimens for estimating the onset and termination of a phenophase. Using simulated data mimicking such uncertainties, we evaluated the accuracy with which the onset and termination of population‐level phenological displays (in this case, of flowering) can be predicted from natural‐history collections data (controlling for biases in collector behavior), and how the duration, variability, and responsiveness to climate of the flowering period of a species and temporal collection biases influence model accuracy. Estimates of population‐level onset and termination were highly accurate for a wide range of simulated species' attributes, but accuracy declined among species with longer individual‐level flowering duration and when there were temporal biases in sample collection, as is common among the earliest and lat...