Amac Morphology Raw Data

This dataset was used for the analyses reported in "Trait variation in patchy landscapes: morphology of spotted salamanders (Ambystoma maculatum) varies more within ponds than between ponds". Data were collected from photo images in 2016 by E. Green and D. Daversa. The data reports morphological traits of spotted salamanders collected in Eastern Missouri. Pond characteristics are also included in the data set. Specifically, the dataframe contains the following columns:
ID: Unique identifier for individuals
date: date of capture
yearday: day of the year that individual was captured
species: the Genus and species of the individual (all are A. maculatum)
side_image: A unique ID for photo image taken of the side of the individual (we also took ventral photos that were not used in the analysis)
stage: larval developmental stage as described by Harrison (1969). See main text for citation.
pond: name of the pond where the individual was capture
site: name of the conservation property where the pond of capture was located
dipnets: number of dipnets made at the pond where individual was captured
density: estimated salamander density in ponds according to dipnet surveys
density_key: a categorical variable describing the density of salamanders at the pond, relative to other survey ponds
species_richness: Number of amphibian species captured during dipnet survey
predator_sum: the total number of predator individuals found at the pond
predator_richness: The number of predator species found at the pond
predator_density: estimated number of predators in the pond of capture
pred_key: A categorical variable describing the density of predators in the pond of capture, relative to other survey ponds
origin: The age of the pond of capture (new vs. old)
head_length: linear length of head (mm)
head_height: Linear height of head (mm)
tail_height: linear height of tail (mm)
total length: linear body length, including head and tail (mm)
mass: the weight of the individual (g)
whole_shape: morphometric shape of individual, including all body segments
body_shape: morphometric shape of the body, excluding head and tail
tail_shape: morphometric shape of the tail
head_shape: morphometric shape of the head