Haupt, Sarah; Kruse, Stefan; Schild, Laura; Gloy, Josias; Ewald, Peter (2025): Forest inventory and tree genetic sampling across 75 sites in Northwestern Canada in summer 2022 (CA-Land_2022_NWCanada) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982332
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Published: 2025-06-12 • DOI registered: 2025-07-11
Abstract:
During the CA-Land_2022_NWCanada field campaign in July and August 2022, a comprehensive forest inventory was conducted across 32 full inventory plots and 43 additional short stops for genetic sampling in Northwest Territories, Yukon, and British Columbia, Canada. The study area, located within the boreal forest biome and partially underlain by permafrost soils, was surveyed by scientists from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), and the University of Potsdam, Germany. The primary objectives were to document tree and forest characteristics to support research on treeline migration, stand infilling, natural disturbances, and succession processes, as well as to initialize and validate a forest model. Approximately 900 trees were inventoried within circular plots of 15 m radius, covering different vegetation types. Detailed measurements were recorded for around 10 individuals per tree species and 3 per shrub species. Tree parameters included species, position, height, crown base, diameter at base (DBS), diameter at breast height (DBH), minimum and maximum crown diameter (DC min, DC max), and the presence of green cones. For shrubs, species, position, height, and minimum and maximum diameters were documented. Additionally, genetic samples from 835 trees and shrubs were collected in the form of needles, leaves, or cambium tissue, dried on silica gel, and stored at 4°C for future analysis. This dataset provides a valuable resource for studying boreal forest dynamics in the context of environmental change.
Keyword(s):
References:
Olson, David; Dinerstein, Eric; Wikramanayake, Eric; et al. (2001): Terrestrial Ecoregions of the World: A New Map of Life on Earth: A new global map of terrestrial ecoregions provides an innovative tool for conserving biodiversity. BioScience, 51(11), 933-938, https://doi.org/10.1641/0006-3568(2001)051%5B0933:TEOTWA%5D2.0.CO;2
Project(s):
Coverage:
Median Latitude: 64.692098 * Median Longitude: -133.731137 * South-bound Latitude: 58.650460 * West-bound Longitude: 68.434440 * North-bound Latitude: 68.879846 * East-bound Longitude: -121.832180
Date/Time Start: 2022-07-14T00:00:00 * Date/Time End: 2022-08-12T00:00:00
Minimum Elevation: 12.0 m * Maximum Elevation: 1553.0 m
Event(s):
EN22001 * Latitude: 60.555840 * Longitude: -134.394520 * Date/Time: 2022-07-14T00:00:00 * Elevation: 768.0 m * IGSN: https://doi.org/10.60510/AWFWI02060 * Location: Yukon, Canada * Campaign: CA-Land_2022_NWCanada_Forests (Forest Change Northwest Canada) * Basis: AWI Arctic Land Expedition * Method/Device: Vegetation survey (VEGSUR) * Comment: Slope disturbed with some spruces
EN22002 * Latitude: 60.810410 * Longitude: -135.368910 * Date/Time: 2022-07-15T00:00:00 * Elevation: 774.0 m * IGSN: https://doi.org/10.60510/AWFWI02061 * Location: Yukon, Canada * Campaign: CA-Land_2022_NWCanada_Forests (Forest Change Northwest Canada) * Basis: AWI Arctic Land Expedition * Method/Device: Vegetation survey (VEGSUR) * Comment: Bog forest wet with spruces and thick moss cover
EN22003 * Latitude: 60.440120 * Longitude: -133.555340 * Date/Time: 2022-07-16T00:00:00 * Elevation: 822.0 m * IGSN: https://doi.org/10.60510/AWFWI02062 * Location: Yukon, Canada * Campaign: CA-Land_2022_NWCanada_Forests (Forest Change Northwest Canada) * Basis: AWI Arctic Land Expedition * Method/Device: Vegetation survey (VEGSUR) * Comment: Bog forest wet with black spruces and thick moss cover
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kruse, Stefan | Plot name | ||
| 2 | Sample code/label | Sample label | Kruse, Stefan | Tree ID | ||
| 3 | Species | Species | Kruse, Stefan | If species not available, genus or family | ||
| 4 | LATITUDE | Latitude | Kruse, Stefan | Handheld GPS, Garmin | Geocode | |
| 5 | LONGITUDE | Longitude | Kruse, Stefan | Handheld GPS, Garmin | Geocode | |
| 6 | Landform | Landform | Kruse, Stefan | Physiogeographic feature or landform description, the sample was taken in | ||
| 7 | Biome | Biome | Kruse, Stefan | see reference(s) | Name of the biome, the sample was taken in. According to Olson et al. (2001) | |
| 8 | Tree height | Tree height | m | Kruse, Stefan | Clinometer, Suunto, PM-5/360 | |
| 9 | Tree height | Tree height | m | Kruse, Stefan | Clinometer, Suunto, PM-5/360 | If tree is forked |
| 10 | Tree, crown base | Tree crown base | m | Kruse, Stefan | Folding ruler | |
| 11 | Tree, diameter, at base | Tree D base | cm | Kruse, Stefan | Tape measure | |
| 12 | Trees, diameter at breast height | DBH | cm | Kruse, Stefan | Tape measure | Diameter at breast height (1.3 m) |
| 13 | Trees, diameter at breast height | DBH | cm | Kruse, Stefan | Tape measure | Diameter at breast height (1.3 m) of second tree top if tree is forked |
| 14 | Tree crown diameter | Crown diam | m | Kruse, Stefan | Folding ruler | Crown diameter in direction 1; minimum |
| 15 | Tree crown diameter | Crown diam | m | Kruse, Stefan | Folding ruler | Crown diameter in direction 2; maximum |
| 16 | Reproduction | Reproduction | Kruse, Stefan | Presence of green cones YES or NO | ||
| 17 | Comment | Comment | Kruse, Stefan | |||
| 18 | Data collection date | DC date | Kruse, Stefan | |||
| 19 | Comment | Comment | Kruse, Stefan | Availability of genetic sample | ||
| 20 | International Generic Sample Number | IGSN | Kruse, Stefan | IGSN of tree; only if genetic sample is registered as IGSN | ||
| 21 | Sample code/label 2 | Sample label 2 | Kruse, Stefan | If genetic sample is registered as IGSN | ||
| 22 | International Generic Sample Number | IGSN | Kruse, Stefan | IGSN of genetic sample; only if If genetic sample is registered as IGSN |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
11473 data points
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