ARSTAN chronology development

Knowledge graph centered on ARSTAN chronology development with 75 nodes and 184 connections. Top connected: Forest responses to increasing aridity and warmth , Spruce, Observed forest sensitivity to climate implies lar, climate change, elevational gradients.

Method synopsis

Wood samples are sectioned into sub-annual increments and cellulose is extracted for oxygen and carbon isotope analysis to assess seasonal water sources and water use efficiency in trees.

Synthesized from method descriptions across 13 papers 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 — Depth of nutrient uptake by deep-rooted plants is regulated by water availability (2026), PNAS. The protocol was originally introduced by Observed forest sensitivity to climate implies large changes in 21st century North American forest growth (2016), Ecology Letters. Implementations in other papers (listed below) may differ.

1. Collect and analyze sagebrush growth rings
   One sagebrush plant from each of two study locations was sectioned for growth rings. Growth ring samples were mounted, sanded, and measured for ring width using a sliding scale micrometer. Ring samples were dissolved in HNO3 and analyzed for 87Sr/86Sr ratios by ICP-MS.
   Quantities: 1 plant per site, multiple growth rings per plant spanning ~30 yearsDuration: Single collection, laboratory analysis over multiple daysConditions: Laboratory preparation and analysis
   Equipment: sliding scale micrometer, mounting materials, sanding equipment, ICP-MS

Typical Equipment

• sanding equipment
• scanner
• slicing tools
• TC/EA
• ceramic reactor
• ConFlo II interface
• ThermoFisher Delta Precision Isotope Ratio Mass Spectrometer
• combustion-GC-IRMS system

Output Measurements

• δ18Ocellulose
• δ13Ccellulose
• seasonal isotopic cycles

Papers Using This Protocol (14)

Species Studied With This Protocol