Forest Ecosystem Monitoring Cooperative

Canopy Ion Exchange Mechanisms: 1991 Branch Ion Deposits

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Metadata Provider

  • Forest Ecosystem Monitoring Cooperative

    • Address:
      705 Spear Street
      South Burlington, Vermont 05403
      United States of America

      Phone: (802) 656-2975
      Email: femc@uvm.edu
      Website: www.uvm.edu/femc

Abstract

    Broad goal is to better understand mechanisms controlling foliar ion exchange (foliar leaching and uptake) in forest canopies.

People

  • Tim Scherbatskoy: Content Provider

  • Carl Waite: Principal Investigator

  • Gary Lovett: Content Provider

Keywords

  • foliage, ion exchange, monitoring, plant physiology,

Organizations

  • Vermont Monitoring Cooperative : partner
  • Cary Institute of Ecosystem Studies : partner

Geographic Coverage

  • Coordinates
  • Coordinate System

Data Table

  • Title: 1991 Branch Ion Deposits
  • Start Date: 1991-01-01
  • End Date: 1992-01-01
  • Description: Broad goal is to better understand mechanisms controlling foliar ion exchange (foliar leaching and uptake) in forest canopies.

  • Purpose: (1) Characterize the ion exchange rates in sugar maple during artificial precipitation events, (2) identifying the relative importance of possible sources and sinks for exchanging ions, (3) relating tissue ion concentrations to ion exchange rates, and (4) developing a mechanistic model predicting canopy ion exchange rates.

  • Condensed Title:

  • Object Name: VMC.41.2137

  • Data Type: mySQL
  • Citation: Scherbatskoy, T., Lovett, G. and C. Waite. 1991 Branch Ion Deposits. VMC. https://www.uvm.edu/femc/data/archive/project/canopy-ion-exchange-mechanisms/dataset/1991-branch-ion-deposits

  • Online Distribution: https://www.uvm.edu/femc/data/archive/project/canopy-ion-exchange-mechanisms/dataset/1991-branch-ion-deposits

Attribute List

Methods

  • Past Methods (no longer in use)
    • Comparison of chemistry of foliar leachate
      • Started: 1991-07-01
        Ended: 1992-12-30
      • Method Description: To identify the relative importance of foliage vs stems in canopy ion exchange, a comparison of chemistry of foliar leachate from normal and artificially defoliated branches, and evaluating the kinetics of ion exchange in each.

    • Treatments and analysis
      • Started: 1991-07-01
        Ended: 1992-12-30
      • Method Description: Multiple paired branches from 2 open-grown trees were used to receive treatments. One branch per pair was manually defoliated in early July. Articificial precipitation at pH 4.4 was applied for three hours in branch chambers and foliar leachate collected every 15 min. Foliage and leachate samples were analyzed for all major nutrient cations and anions. Lab studies examined the ion transport properties of isolated leaf cuticles from the field foliage in order to calculate ion permeability rates.

    • Contribution of leaf surface deposits to cano
      • Started: 1991-07-01
        Ended: 1992-12-30
      • Method Description: To evaluate the contribution of leaf surface deposits to canopy ion exchange a comparison of the chemistry of leachate from sugar maple foliage on small branches that had been previously washed with an acidic solution at pH 3.3, deionized water, or left unwashed. Thirty branches chosen from 4 trees were used. A total of 6 treatment compinations (3 prewashes X 2 acid mists) were used and the experiment was replicated 5 times for a total of 30 branches treated.

    • Leachate sample collection
      • Started: 1991-07-01
        Ended: 1992-12-30
      • Method Description: Leachate samples were collected sequentially from each chamber over 15 min. intervals during the first hour and over 30 min. intervals during the second hour for a total of 6 leachate samples per chamber per replicate. Leaf and stem area determinations were made and chemical analyses. Leaf cuticle samples from treated foliage was collected for additional measurement of cuticular ion permeabilities. Leachate samples were analyzed for major ions.

Sampling Equipment

  • No sampling equipment recorded for this dataset

Site Characteristics

  • Site Description: The Proctor Maple Research Center consists of about 200 acres of wooded and open land. Approximately 35-40 acres is an actively managed sugarbush for maple syrup production and research.

  • Minimum Altitude: 395 meters

  • Maximum Altitude: 405 meters