Dataset Overview

The invasion of the non-native insect, hemlock woolly adelgid (HWA, Adelgids tsugae) into hemlock (Tsuga canadensis) stands in New England has the potential to rapidly change the ecology and function of these forests. The investigators of this project are monitoring how forest structure and function changes as the adelgid invades hemlock stands in Harvard Forest. To do this, this study surveyed community vegetation structure and composition prior to adelgid infestation as well as during the progress of the infestation.

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To link the history of hemlock stands in New England forests to the current response to adelgid infestations from multiple studies.

Data Collection Status

Data collection for this dataset is ongoing

Start date


Data Availability

This dataset is available to download from another website

Data License

Linked - Third party determines data license

Preferred Citation

Foster D, Orwig D. 2016. Hemlock Understory Vegetation Plots at Harvard Forest since 2002. Harvard Forest Data Archive: HF048. Available at:

Update Frequency


Maintenance Plan

Not provided


  • Hemlock Understory Vegetation Plots at Harvard Forest since 2002
  • Harvard Forest
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