Protocols
23 protocols
Experimental predator manipulation with colony establishment
Controlled experiment manipulating predator presence by establishing artificial aphid colonies, protecting them from natural predators, then adding lygus bugs to treatment plants. Includes ant bridge ...
pitfall trapping (Formicidae)
Standardized 2-hour baiting experiments using 5 different resource types arranged in pentagonal plots to sample ant communities and assess dominance patterns. Records ant abundance and identity at reg...
Ant exclusion experiment on aphid colonies
Experimental manipulation using physical barriers to exclude ants from aphid colonies while maintaining control colonies with ant access. Uses paired treatment design on same plants to test effects of...
jar method
Standardized wet sieving method using Yoder device to determine soil aggregate size distributions. Measures water-stable aggregates across multiple size classes to assess soil structure.
Parasitoid wasp controlled exposure on bagged flowers (Asteraceae)
Flowers are bagged to prevent natural parasitism, then exposed to controlled introductions of parasitoid wasps or ambient parasitoid activity, followed by assessment of parasitism effects on seed pred...
Ant chemical associative learning field assay (Formicidae)
A two-phase field protocol using training baits scented with plant chemicals followed by two-choice tests to assess whether ants form associative memories linking plant odors to carbohydrate rewards. ...
Gravimetric soil moisture determination
Standardized method using funnel, filter paper and drainage to measure maximum water holding capacity of soil samples. Involves saturating soil, draining for set time, then oven-drying to calculate wa...
PAR measurement
Standardized measurement of PAR using quantum light sensors during midday cloudless conditions to quantify light environment across study sites.
Snow melt manipulation experiment (Aphididae)
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...
nonmetric multidimensional scaling (Plantae)
PERMANOVA testing of volatile composition differences across species and years, with NMDS visualization of chemical dissimilarity patterns.
AIC model selection (Plantae)
Multiple candidate models incorporating different combinations of climate predictors were fitted and ranked using Akaike Information Criterion to select optimal models for demographic functions.
Ant identification and behavioral observation on sunflowers (Asteraceae)
Field-based study of ant interactions with pollinators on Helianthella quinquenervis, involving ant identification and behavioral observations. Protocol development included ant keying skills and hone...
Colony fragmentation and diet manipulation of Formica podzolica (Formicidae)
Wild ant colonies were collected and split into paired fragments, then maintained on controlled diets (carbohydrate vs protein-rich) to test effects of macronutrient balance on behavior. Colony fragme...
Dichotomous key construction (Onagraceae)
A systematic approach to creating identification keys by compiling species lists from authoritative sources, gathering morphological descriptions, and structuring binary choices that eliminate possibi...
Honeydew collection and chemical analysis
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.
Multi-year arthropod community surveys on dioecious plants
Exhaustive visual surveys of arthropod abundance on randomly selected male and female plants conducted across multiple years to quantify sex-biased community structure.
Plant biomass allocation analysis (Valerianaceae)
Calculation and statistical analysis of plant biomass allocation between vegetative and reproductive tissues using arcsin transformations and three-way ANOVA.
Trophic interaction field observation
Systematic field observation of trophic interactions between organisms, primarily plants and insects, with rotating temporal sampling across multiple sites to record feeding relationships and interact...
Climate wetness index calculation
Calculation of site-specific wetness indices using mean annual precipitation and temperature data to characterize local climate conditions for experimental sites.
Liguisticum porteri weekly census monitoring (Animalia)
Systematic weekly monitoring of plant phenology, insect abundance, and herbivore impacts on Osha plants along established transects. Includes detailed counts of aphids, ants, and other insects on flow...
stable isotope analysis
Carbon and nitrogen stable isotope analysis of ant tissues to determine trophic position and dietary composition. Involves specimen preparation, drying, grinding, and mass spectrometry analysis.
Dominance scoring (Formicidae)
Three dominance scores calculated for each species at each site where it occurred to assess competitive hierarchies.
Global Biotic Interactions data integration
Integration process combining datasets from natural history collections, community science observations, and literature to compile bee interaction data.