Protocols

Digital recording and spectral analysis of alarm vocalizations to quantify entropy and goodness of pitch as measures of call structure and acoustic properties.

Mixed-effects modeling approach to partition phenotypic variance into genetic and environmental components using pedigree information and repeated measures data.

Statistical method using continuous two-phase models to identify the age at which body mass growth stabilizes at adult levels in golden-mantled ground squirrels.

Linear mixed effect models to estimate individual body mass at key seasonal transition points, accounting for day-of-year effects and random variation among years, sites, and individuals. Provides sta...

RASTER-based spatial analysis to quantify multiple metrics of anthropogenic disturbance including distance to infrastructure and proportion of impervious surfaces within species-specific buffer zones.

A standard comparative method that controls for evolutionary relationships among species by analyzing evolutionary changes along phylogenetic branches rather than raw species values. Uses software to ...

Mathematical method for calculating relative dominance ranks from pairwise interaction outcomes that is tolerant of missing data and accounts for group size variation.

Use of remote sensing data to determine snowmelt timing and map marmot colony boundaries. Combines satellite imagery analysis with ground-truthed colony locations to quantify seasonal and habitat vari...

Detailed measurement of acoustic parameters from spectrograms to quantify song characteristics and calculate vocal individuality metrics.

Construction of genealogies from long-term observational data and estimation of coefficients of relatedness using Hamilton's method with assumptions about mating system and paternity.

Quantification of vocal individuality using principal component analysis followed by ANOVA and Beecher's information statistic calculation to measure inter-individual variation relative to intra-indiv...

Semi-parametric survival analysis using Cox proportional hazard models to test effects of maternal, social, and environmental covariates on annual survival probability while allowing baseline hazard t...

Statistical analysis of stream chemistry data transformed to compositional units using PCA to evaluate spatial and temporal trends while removing effects of dilution.

A comprehensive protocol for extracting, amplifying, sequencing and analyzing viral DNA from fecal samples to identify microviral genomes. Uses rolling circle amplification followed by high-throughput...

Statistical approach using the climwin package to determine optimal phenological windows of climate variables that best predict biological timing by testing multiple window lengths and start dates.

Statistical modeling of capture-recapture data to estimate seasonal survival probabilities across age classes using program MARK with model selection via AICc.

Integration of molecular phylogeny with life history and energetic data to identify evolutionary patterns of energy conservation traits across marmot species. Uses comparative analysis to distinguish ...

Principal component analysis applied across multiple species using demographic traits to identify major axes of life-history variation and test for slow-fast continuum patterns. Uses phylogenetically-...

Standardized literature search and screening process to identify and synthesize studies on hibernating mammal responses to climate change, followed by categorization and statistical analysis of climat...

Construction and parameterization of periodic matrix population models to project population dynamics under different scenarios of environmental periodicity strength.

Analysis method that reveals demographic and trait mediated processes that buffer population growth using transient life table response experiments.