• 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

The northeastern United States is experiencing some of the greatest shifts in climate in the US, with warming winters, increased frequency of extreme precipitation events, and severe droughts. For instance, annual mean temperatures across the northeast have risen ~1.7 °F since the 1930s. Currently, we are lacking adequate information to connect potential montane tree growth and productivity trends across the broader context of the Northern Appalachian region, which is critical to understand adaptation under future climate scenarios. Broad-scale study of tree growth is limited in feasibility due to the cost-restrictive dendrometer instruments (devices that measure the radial, or outward growth of tree stems) required to reliably measure these characteristics. In this project, we captured variation in tree radial growth as measured by traditional and low-cost dendrometers across climate and edaphic gradients linked to elevation, and between different age classes of trees and tree species within Tuckerman’s Ravine (White Mountain National Forest) in New Hampshire. Our project provided valuable comparative data for the performance of traditional point dendrometers, priced at approximately $400 (Ecomatik, Germany), to the performance of low-cost point dendrometers, priced at approximately $100 (TOMST, Czechia), to determine the accuracy of low-cost dendrometers for the study of tree growth dynamics.

• Label: dendro_site

• Description: Unique field site name

• Storage Type: text

• Measurment Type: nominal

• Label: dendro_type

• Description: Type of dendrometer used - either Ecomatik or TOMST

• Storage Type: text

• Measurment Type: nominal

• Label: download_1

• Description: Date of first data download

• Storage Type: text

• Measurment Type: nominal

• Label: download_2

• Description: Data of second data download

• Storage Type: text

• Measurment Type: nominal

• Label: download_3

• Description: Date of 3rd data download

• Storage Type: text

• Measurment Type: nominal

• Label: experiment

• Description: Original experiment name for dendrometer: FEMC or related treeline study

• Storage Type: text

• Measurment Type: nominal

• Label: hobo_input_position

• Description: Ecomatik sensor input position on HOBO datalogger

• Storage Type: int

• Measurment Type: nominal

• Label: hobo_sn

• Description: Serial number of hobo temperate logger near dendrometer

• Storage Type: text

• Measurment Type: nominal

• Label: id

• Description: Unique id of sensor within each site in study

• Storage Type: text

• Measurment Type: nominal

• Label: init_diam

• Description: Initial measured diameter of tree

• Storage Type: decimal

• Measurment Type: nominal
• Unit: cm

• Label: S/N

• Description: Serial number of sensor

• Storage Type: text

• Measurment Type: nominal

• Label: size_class

• Description: Size class of tree: small (less than 15 cm dbh), large (more than 15 cm dbh) or krummholz (treeline position)

• Storage Type: text

• Measurment Type: nominal

• Label: start_date

• Description: Date of sensor installation

• Storage Type: date

• Measurment Type: datetime
• String Format: M/D/YYYY

• Label: start_time

• Description: Time of sensor installation

• Storage Type: time

• Measurment Type: datetime
• String Format: hh:mm

• Label: tree_num

• Description: Tag number of study tree

• Storage Type: text

• Measurment Type: nominal

• Label: tree_species

• Description: Species of study tree: ACSA = sugar maple; ABBA = balsam fir

• Storage Type: text

• Measurment Type: nominal