Meta-analysis (Plantae)

Knowledge graph centered on Meta-analysis (Plantae) with 36 nodes and 119 connections. Top connected: Fungal symbionts alter plant responses to global c, Engelmann Spruce, Populus, Populus angustifolia, Festuca thurberi.

Method synopsis

Systematic literature review and quantitative synthesis examining how fungal symbionts modify plant responses to global change factors using effect size calculations and weighted linear models.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Fungal symbionts alter plant responses to global change (2013), American Journal of Botany. Implementations in other papers (listed below) may differ.

1. Literature search in ISI Web of Science
   Performed literature search using keywords related to global change factors (enriched CO2, drought, warming, temperature, N, or CO2) combined with terms for endophyte AND stress, drought, warming, temperature, N, or CO2. Screened results to obtain studies that examined the response of plant biomass both with and without a fungal symbiont to at least one of the following global change factors: enriched CO2, drought stress, N deposition, and warming.
   Quantities: 434 studies spanning 174 publications examinedDuration: Not specifiedConditions: Not applicable
   Equipment: ISI Web of Science database
2. Data collection and categorization
   Focused on plant biomass responses as reported in majority of studies. Collected data on plant height, leaf elongation rate, or tiller length when biomass was not reported. Estimated standard deviation when not reported using methods from Hedges 1999. Categorized studies by symbiont type (EF, AMF, ECM, or DSE) and global change factor.
   Quantities: Data from 434 studies collected, with 97% conducted in greenhouse studiesDuration: Not specifiedConditions: Majority of studies conducted in greenhouse environments
   Equipment: WebPlotDigitizer v. 2.4 for data extraction from figures
3. Effect size calculation
   Calculated log response ratio (LRR) and relative interaction intensity (RII) metrics. LRR quantified main effect of having fungal symbiont, RII quantified interaction between symbionts and global change. Used specific formulas for each metric involving treatment and control group means and sample sizes.

Typical Equipment

• ISI Web of Science database
• WebPlotDigitizer v. 2.4
• SAS 9.3 statistical software

Output Measurements

• log response ratio (LRR)
• relative interaction intensity (RII)
• effect sizes

Papers Using This Protocol (1)

Species Studied With This Protocol