Data from: Rethinking ‘normal’: the role of stochasticity in the phenology of a synchronously breeding seabird ...

• Main Authors: Youngflesh, Casey, Jenouvrier, Stephanie, Hinke, Jefferson T., DuBois, Lauren, St. Leger, Judy, Trivelpiece, Wayne Z., Trivelpiece, Susan G., Lynch, Heather J.
• Format: Dataset
• Language: English
• Published: Dryad 2018
• Subjects: Bayesian hierarchical model; coloniality; Pygoscelis adeliae; Adélie penguin; Phenological mismatch
• Online Access: https://dx.doi.org/10.5061/dryad.23sv1; https://datadryad.org/stash/dataset/doi:10.5061/dryad.23sv1

1. Phenological changes have been observed in a variety of systems over the past century. There is concern that, as a consequence, ecological interactions are becoming increasingly mismatched in time, with negative consequences for ecological function. 2. Significant spatial heterogeneity (inter-site) and temporal variability (inter-annual) can make it difficult to separate intrinsic, extrinsic, and stochastic drivers of phenological variability. The goal of this study was to understand the timing and variability of breeding phenology of Adélie penguins under fixed environmental conditions, and to use those data to identify a ‘null model’ appropriate for disentangling the sources of variation in wild populations. 3. Data on clutch initiation were collected from both wild and captive populations of Adélie penguins. Clutch initiation in the captive population was modeled as a function of year, individual, and age to better understand phenological patterns observed in the wild population. 4. Captive populations ... : AGE_matAges of captive breeding female Adelie penguins (in years) at SeaWorld San Diego from 1992 to 2015. Each column represents a year, each row represents a different individual. Negative values for a given individual/year indicate that this female had not yet been born (to avoid NAs in the matrix). These data are used in the hierarchical model in Youngflesh et al. Journal of Animal Ecology.CID_matClutch initiation dates (arbitrary julian day) for captive female Adelie penguins at Sea World San Diego from 1992 to 2015. Columns represent years, rows represent individuals. These data are used in the hierarchical model in Youngflesh et al. Journal of Animal Ecology.Captive_CIDClutch initiation dates (CID) for female Adelie penguins at Sea World San Diego from 1992 to 2015. Columns are YEAR (year of interest), FEMALE_ID (id number for each female), and J_CID (arbitrary julian day for CID). These data are used to calculate variance and plot CID over time in Youngflesh et al. Journal of Animal ...