Blonder, B. et al

Spectral data for quaking aspen (Populus tremuloides) clones of different ploidy levels

Data comprise measurements of spectral reflectance for quaking aspen (Populus tremuloides Michx.) trees at a range of sites in southwestern Colorado near the town of Crested Butte. Spectra were measured in three different ways: hyperspectral measurements of leaves, hyperspectral measurements of bark, and multispectral measurements of canopies. The first two measurements were made using a handheld spectrometer, while the latter were made via airborne imaging from an unmanned aerial system.

In addition to these reflectance data, the dataset also includes information on the genotype and/or ploidy level of each sample, as determined by either DNA microsatellite analysis or flow cytometry. All samples are georeferenced.

The data include extracted data and raw imagery.

Publication date: 2019-09-24

Get the data

This dataset is available under the terms of the Open Government Licence

This dataset is available as

  • Comma-separated values (CSV)
  • TIFF

You must cite: Blonder, B.; Graae, B.J.; Greer, B.; Haagsma, M.; Helsen, K.; Kapás, R.E.; Pai, H.; Rieksta, J.; Sapena, D.; Still, C.J.; Strimbeck, R. (2019). Spectral data for quaking aspen (Populus tremuloides) clones of different ploidy levels. NERC Environmental Information Data Centre.


© Natural Environment Research Council


Study area
Temporal extent
2016-06-01    to    2017-09-30

Provenance & quality

The hyperspectral data were filtered and averaged across multiple replicates to reduce sampling error. All spectra were hand-inspected, with samples that did not meet certain criteria (e.g. a near-infrared rise, or a green local maximum) were discarded.

Multispectral data were calibrated against ground gray references and orthorectified using commercially available algorithms.

Flow cytometry ploidy level data were validated against Hordeum vulgare standards; DNA microsatellite ploidy level data were validated using published algorithms described in more detail in the supplemental information.

Correspondence/contact details

Dr. Ben Blonder
Oxford University


Blonder, B.
Oxford University
Graae, B.J.
Norwegian University of Science and Technology
Greer, B.
Rocky Mountain Biological Laboratory
Haagsma, M.
Oregon State University
Helsen, K.
University of Leuven
Kapás, R.E.
Stockholm University
Pai, H.
University of Nevada Reno, USA
Rieksta, J.
University of Copenhagen
Sapena, D.
Montana State University
Still, C.J.
Oregon State University
Strimbeck, R.
Norwegian University of Science and Technology

Other contacts

Environmental Information Data Centre
NERC Environmental Information Data Centre

Additional metadata

Topic categories
Populus tremuloides quaking aspen
Environmental Monitoring Facilities
Natural Environment Research Council
Spatial representation types
Tabular (text)
Spatial reference system
WGS 84
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