Protocols

All (1474)Explore Protocol Graph

1,474 protocols

analytical

APHA Standard Method for DBP Formation Potential

Standardized chlorination procedure to simulate drinking water treatment and quantify the potential for organic matter to form regulated disinfection byproducts under controlled conditions.

water treatment1 papersodium hypochlorite stock solution, Hach Chlorine Free & Total colorimetric test kit
analytical

ASTRAL species tree estimation (Pieridae)

Species-level phylogenetic reconstruction using thousands of single-copy orthologous genes with coalescent-based species tree estimation.

phylogenetics1 paperBUSCO, ASTRAL
computational

AVAL-1D

Swiss avalanche dynamics program used to calculate runout distance, flow thickness, velocity and impact pressure by modeling avalanche flow physics with calibrated friction parameters.

avalanche simulation1 paperAVAL-1D v. 1.3.1 software
measurement

Aboveground net primary productivity measurement (Pinaceae)

Calculation of tree biomass increment through repeat diameter measurements combined with allometric equations, plus litterfall collection to estimate total aboveground productivity.

productivity assessment1 papersteel diameter tape, mesh-lined litter traps...
analytical

Accelerator mass spectrometry radiocarbon dating

Measurement of radiocarbon content in bulk sediments and density fractions using accelerator mass spectrometry after acid fumigation pretreatment to remove inorganic carbon.

isotopic measurement1 papervacuum desiccator, accelerator mass spectrometer
measurement

Acoustic Doppler Velocimetry

Stream discharge measurement using acoustic doppler velocimetry with systematic cross-sectional velocity measurements integrated to calculate total flow.

hydrological monitoring1 paperSonTek Flowtracker acoustic doppler velocimeter, tag line...
analytical

Acoustic transmission degradation analysis (Vireonidae)

Broadcasting and re-recording sounds at increasing distances in different habitats to quantify degradation patterns using spectrogram correlation analysis. Assesses how acoustic signals change with tr...

acoustic analysis1 paperAudix OM-3xb microphone, Marantz PMD 660 solid state recorder...
experimental

Acute restraint stress protocol (Ambystomatidae)

Standardized protocol for inducing acute stress in amphibians through manual restraint to measure stress hormone response over time. Includes baseline sampling followed by stress induction and tempora...

stress induction1 paperdip nets, plastic buckets...
computational

Additivity rule testing

Numerical experiments to test whether sum of SARs for taxonomic subgroups equals the SAR for the entire assemblage under METE predictions.

theoretical testing1 papercomputational analysis
analytical

Aerial photography habitat analysis (Nymphalidae)

Analysis of high-resolution aerial photography to quantify conifer cover around host plants using color thresholding and spatial buffering techniques.

remote sensing1 paper2006 aerial photograph with <1 m² spatial resolution, GIS software for spatial analysis
observational

Alert distance measurement

Field measurement of the distance at which birds first orientate to an approaching threat, used as a proxy for detection distance across multiple species and geographic regions.

behavioral response1 paperPublished literature sources, Species databases
experimental

Alpine biochemical reactor wastewater treatment

Pilot-scale biochemical reactor using limestone-buffered organic substrate with bacterial inoculum for anaerobic treatment of mining influenced wastewater under harsh alpine conditions. System operate...

passive treatment1 paperlimestone, organic substrate...
sampling

Alpine lake water chemistry sampling

Standardized collection of lake water samples from deepest point using submersible pumps with macrozooplankton exclusion. Includes physical profiling and immediate chemical processing.

water chemistry1 paperbattery-powered submersible pump, YSI model 85 temperature-oxygen probe...
observational

Alpine pond bird behavior surveys (Aves)

Systematic 10-minute bird observations at pond sites with defined zone-based recording of species identity, behaviors, and time spent. Includes 5-minute settling period and standardized behavior categ...

behavioral monitoring1 paperobservation recording materials, timing devices...
sampling

Amphibian collection and biosecurity protocol

Field collection of salamanders from multiple sites with biosecurity measures including equipment sterilization between sites and controlled acclimation period before experimentation.

wildlife collection1 papercollection containers, 10% bleach solution
experimental

Anaerobic batch sediment incubation for metal release

Anaerobic batch incubation experiments using sediment samples and artificial river water to monitor Fe(II) and Mn(II) production and release over time under controlled redox conditions.

geochemical incubation1 paperanaerobic glovebox, 160-mL serum bottles...
sampling

Anatomical male inconstancy flower surveys in dioecious plants (Caprifoliaceae)

Systematic examination of up to 100 flowers per individual male plant to detect and categorize presence of female reproductive structures (inconstant sex expression) based on style height and stigmati...

reproductive morphology assessment1 papermagnification tools, data recording sheets
measurement

Anderson and Embick flower color scale (Plantae)

Standardized visual scoring system for flower color in Boechera stricta using 6-point scale from 0 (white) to 5 (purple) with intermediate pink/purple categories.

phenotypic scoring1 paperAnderson and Embick flower color scale
measurement

Anisotropy of Magnetic Susceptibility (AMS)

Oriented rock cubes are measured for directional magnetic susceptibility to determine fabric orientation and strength. Principal axes and confidence ellipses calculated using Jelinek statistics.

magnetic fabric analysis1 paperrock hammer, GPS units...
analytical

Anoxic TEM-EDS elemental mapping

Transmission electron microscopy with energy dispersive X-ray spectroscopy performed under anoxic conditions using vacuum transfer holders to map elemental distributions in redox-sensitive particles.

microscopy1 paperlacey carbon Cu grids, Fischione vacuum transfer holder Model 2560...
laboratory

Anoxic sample preparation and sectioning

Specialized sample sectioning and epoxy stabilization under anoxic conditions to preserve redox-sensitive microsites for X-ray analysis.

sample preparation1 paperanoxic chamber, EPO-TEK 301-2FL epoxy...
sampling

Ant nest chronosequence sampling (Formicidae)

Selection of ant nests representing different abandonment times to study legacy effects. Nests categorized as active (2016), recently inactive (2013), and older inactive (2010) to create a temporal gr...

temporal gradient1 paperfield identification of nest activity status
experimental

Ant worker size manipulation experiment

Experimental removal of workers of specific sizes from ant colonies to test effects on subsequent reproductive output. Workers were collected, measured, and selectively removed or returned to test siz...

demographic manipulation1 paperacrylic paint pen, 10x hand lens...
measurement

Aquatic habitat characterization (Malacostraca)

Visual and quantitative assessment of pond habitat characteristics including depth, vegetation, sediment, and detritus to characterize pond environmental conditions.

habitat assessment1 paperdepth measurement tool (not specified)
laboratory

Aquatic invertebrate sorting and identification

Laboratory protocol for sorting aquatic samples and identifying invertebrate specimens using microscopy and taxonomic keys.

taxonomic identification1 paperPetri dishes for sorting samples, Dissecting microscope...
observational

Art-science collaboration documentation (Pinaceae)

A systematic collection and presentation of case studies from art-science collaborative projects presented at a scientific conference. The method involves organizing presentation sessions, collecting ...

case study compilation1 paperpresentation equipment for Ignite format, digital image collection...
analytical

Ash content analysis (Plantae)

Standard method for determining inorganic ash content of plant materials by high-temperature combustion at 500°C for 4 hours.

chemical composition1 paperhigh-temperature oven
analytical

Ash-free dry mass (AFDM) determination (Insecta)

Standard protocol for measuring organic matter decomposition by separating detritus into size fractions, oven-drying, weighing, and ashing to determine ash-free dry mass (AFDM). Accounts for inorganic...

biomass measurement1 paper1-mm mesh screen, oven...
observational

Atmospheric Radiation Measurement (ARM) program

Continuous measurement of aerosol optical properties and cloud condensation nuclei concentrations using standardized ARM instrumentation across multiple global sites representing diverse atmospheric c...

atmospheric monitoring1 paperCloud Condensation Nuclei counter (CCNc), nephelometer...
analytical

Augspurger's Index of synchrony (Megachilidae)

Calculation of reproductive synchrony using Augspurger's Index which quantifies the overlap of activity duration for each individual relative to the population, producing values from 0 to 1.

phenological analysis1 paperR statistical software, AugspurgerIndex package
measurement

Automated climate monitoring (Caprifoliaceae)

Time-lapse cameras and data loggers used to continuously monitor snow melt timing and air temperature to calculate growing degree days and assess treatment effectiveness.

environmental monitoring1 papermounted time-lapse cameras, data loggers...
sampling

Automated surface water sampling in floodplains

Continuous automated collection of surface water samples from floodplain water bodies using programmable autosamplers with contamination prevention protocols and sample preservation.

surface water1 paperISCO 6712 autosampler, acid washed bottles
observational

Autonomous surface flux station deployment

Deployment of autonomous atmospheric surface flux stations (ASFSs) for continuous measurement of surface energy balance components including meteorology, radiation, and turbulent fluxes in remote high...

meteorological monitoring1 paperASFS-30, ASFS-50...
measurement

Avalanche debris transect assessment (Cricetidae)

Linear transects used to quantify debris coverage as confirmation of avalanche disturbance impact. Percent debris calculated along fixed-length transects to characterize site conditions.

disturbance quantification1 papermeasuring equipment for 100m transects
computational

BCSD downscaling

Use of Bias Correction and Spatial Disaggregation downscaled CMIP5 climate projections processed through VIC hydrologic model to generate future streamflow scenarios.

climate modeling1 paperBCSD database, VIC hydrologic model...
computational

BEAST phylogenetic analysis (Apidae)

BEAST analysis using linked mitochondrial and nuclear gene sequences with HKY substitution models and birth-death priors to estimate species-level phylogenetic relationships.

phylogenetics1 paperBEAST, Tracer version 1.6.0
analytical

BET surface area analysis

Measurement of specific surface area using Brunauer, Emmett and Teller modeled N₂ gas sorption isotherms for normalizing weathering rates.

physical characterization1 paperBET surface area analyzer
sampling

BOSS microbial community preservation

Biological OsmoSampler System that preserves microbial communities in situ by adding preservative directly to the sample stream during collection. Enables molecular analysis of microbial communities f...

microbial preservation1 paperBOSS system, RNA/DNA Shield preservative
laboratory

Bacterial culture isolation and maintenance from plant phyllosphere (Pseudomonadaceae)

Protocol for isolating and maintaining pure bacterial cultures from plant leaf surfaces through surface sterilization, plating on selective media, and cryopreservation in glycerol stocks.

microbial culture1 paperKing's B (KB) agar plates, KB broth...
laboratory

Bacterial endophyte isolation from crucifer leaves (Brassicaceae)

Surface sterilization of plant leaves followed by tissue plating on selective media to isolate bacterial endophytes and assess their growth characteristics and pathogenicity.

microbiology1 papercork borer, Kings B media agar...
experimental

Bacterial sugar utilization growth assay (Orbaceae)

Growth assays testing bacterial ability to utilize different monosaccharides as carbon sources, with spectrophotometric monitoring of growth and HPLC quantification of residual sugars.

metabolic testing1 paperBYI medium, spectrophotometer...
sampling

Bagged flower yeast sampling (Ranunculaceae)

Fine-mesh bags were used to control pollinator access to flower stalks, allowing comparison of yeast densities between virgin and pollinator-exposed flowers. Nectar was extracted using calibrated micr...

nectar collection1 paperfine-mesh bags, bridal veil material...
analytical

Bayesian MCMC groundwater residence time inference

Bayesian framework using Markov-chain Monte Carlo to infer groundwater residence time distributions from environmental tracer observations while quantifying parameter uncertainties.

statistical modeling1 paperpyMC3 Python software
analytical

Bayesian hierarchical compositional modeling (Apidae)

Bayesian hierarchical Dirichlet regression models to analyze macronutrient composition patterns and niche overlap. Incorporates phylogenetic relationships and species traits to assess compositional di...

statistical modeling1 paperR software, Stan...
analytical

Bayesian multivariate demographic modeling (Aves)

Multivariate capture-recapture models fitted in Bayesian framework to simultaneously estimate temporal variation and covariation in multiple demographic parameters. Uses multivariate normal distributi...

demographic analysis1 paperJAGS software, R package jagsUI
analytical

Bayesian phylogenetic inference (Vespertilionidae)

MCMC-based phylogenetic reconstruction using multiple gene fragments to establish evolutionary relationships among Prostigmata mites.

computational1 paperMrBayes v3.2.5, MODELTEST 3.7...
analytical

Bayesian precipitation inference from streamflow

Bayesian inference method combining temperature index snow accumulation modeling with bucket hydrology to estimate basin mean precipitation from streamflow observations and snow remote sensing data. U...

hydrologic inference1 paperSNOW-17 snow model, FUSE hydrologic model framework...
analytical

Bayesian spatial record linkage for multi-temporal LiDAR (Plantae)

A two-stage Bayesian hierarchical approach that identifies unique individuals across LiDAR scans by modeling observed locations as noisy transformations of latent true locations, then propagates linka...

record linkage1 paperR statistical software, Rcpp package...
sampling

Beat-sheet sampling (Cicadellidae)

A standardized method for collecting arthropods from vegetation by beating branches and foliage onto a collection sheet while using an aspirator to capture specimens. Sampling was conducted for exactl...

invertebrate collection1 paperbeat-sheet, aspirator
analytical

Bedrock weathering rate quantification

Calculation of bedrock weathering rates using base cation export measurements combined with transmissivity feedback methods for subsurface flow estimation. Uses correlations between specific conductan...

geochemical1 papercomputational analysis software