Protocols

Standardized measurement of PAR using quantum light sensors during midday cloudless conditions to quantify light environment across study sites.

Experimental advancement of snow melt timing using shade cloth application to test effects on host plant phenology and aphid-plant interactions. Combined with temperature manipulation using open-top w...

PERMANOVA testing of volatile composition differences across species and years, with NMDS visualization of chemical dissimilarity patterns.

Multiple candidate models incorporating different combinations of climate predictors were fitted and ranked using Akaike Information Criterion to select optimal models for demographic functions.

Collection of aphid honeydew on aluminum foil substrates followed by LC-MS/MS analysis to quantify sugar and amino acid composition as indicators of plant quality and ant-aphid mutualism benefits.

Photographic analysis using ImageJ software with ellipsis tool to quantify percent vegetation coverage around each sampling point as a fraction of total photographed area.

Calculation of site-specific wetness indices using mean annual precipitation and temperature data to characterize local climate conditions for experimental sites.

Artificial prey made from green modeling clay are deployed on tree branches to estimate bird attack rates over a standardized time period. Attack marks on clay allow identification of predator type an...

Use existing citizen science bird observation data from eBird database to characterize bird abundance and diversity patterns across environmental gradients. Data is filtered for quality and geographic...