Forest Ecosystem Monitoring Cooperative

Forest Research at Harvard Forest: Tree Seed Dispersal in Hemlock Removal Experiment at Harvard Forest 2005

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Metadata Provider

  • Forest Ecosystem Monitoring Cooperative

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

      Phone: (802) 391-4135
      Email: femc@uvm.edu
      Website: www.uvm.edu/femc

Abstract

    Since 1907, the Harvard Forest has served as a center for research and education in forest biology and conservation. The Forest's Long Term Ecological Research (LTER) program, established in 1988 and funded by the National Science Foundation, provides a framework for much of this activity.

People

  • Emery Boose: Principal Investigator

Keywords

  • forest regeneration, Harvard Forest, inventory, regeneration, reproduction, seed dispersal,

Organizations

  • Harvard University Harvard Forest: lead
  • Duke Forest : partner

Geographic Coverage

  • Coordinates

    Data Table

    • Title: Tree Seed Dispersal in Hemlock Removal Experiment at Harvard Forest 2005
    • Start Date: 2005-01-01
    • End Date: 2005-12-31
    • Description: Throughout the Northeast, the hemlock woolly adelgid (Adelges tsugae) threatens eastern hemlock (Tsuga canadensis) through direct mortality resulting from infestation followed by defoliation and indirect mortality in the form of pre-emptive logging. The efficacy of regeneration of vegetation following hemlock decline depends upon advance regeneration of seedlings and saplings, seed dispersal, and recruitment. This study investigated (1) whether the basic parameters of height of release and wind velocity affected seed dispersal distance and (2) the fit of a basic ballistic model of seed dispersal to empirical data in areas both with and without canopies. Empirical data was collected from seed dropping and seed rain experiments at Harvard Forest. Height and wind velocity only affected seed dispersal distance in open areas. Predicted values of dispersal distance generated by the basic ballistic model did not provide a good fit to observed dispersal data. Poor fits of the ballistic model to the data were due to the model’s inability to account for rare, long distance dispersal events. More complex models with additional parameters are necessary to model Non-localized seed dispersal.

    • Purpose: The purpose of this study was to research the efficacy of regeneration of vegetation following hemlock decline after hemlock wooly adelgid infestation.

    • Condensed Title:

    • Object Name: VMC.1387.2861

    • Data Type: mySQL
    • Citation: Record S, Ellison A. 2009. Tree Seed Dispersal in Hemlock Removal Experiment at Harvard Forest 2005. Harvard Forest Data Archive: HF120. Available at: http://harvardforest.fas.harvard.edu:8080/exist/apps/datasets/showData.html?id=hf120

    • Online Distribution: https://vmc.w3.uvm.edu/vmcdevel/data/archive/project/Harvard_Forest_Research/dataset/tree-seed-dispersal-hemlock-removal-experiment

    Attribute List

      Attribute Name: species
      • Label: Species in Tree Seed Dispersal in Hemlock Removal Exp at HF dataset
      • Description: Species in Tree Seed Dispersal in Hemlock Removal Exp at HF 2005 dataset (hf120)
      • Storage Type: text
      • Measurment Type: nominal
      • Species List: Tree Seed Dispersal in Hemlock Removal Exp at HF Species
        • Code: Acer sp.
          • Definition: ITIS #28727, maples (Acer sp.)
        • Code: Quercus sp.
          • Definition: ITIS #19276, oak (Quercus sp.)
        • Code: Betula sp.
          • Definition: ITIS #19478, birch (Betula sp.)
        • Code: Tsuga canadensis
          • Definition: ITIS #183397, Canada hemlock; hemlock spruce (Tsuga canadensis)

    Methods

    • No methods recorded for this dataset

    Sampling Equipment

    • No sampling equipment recorded for this dataset

    Site Characteristics

    • No site characteristics recorded for this dataset