Remote sensing of cytotype and its consequences for canopy damage in quaking aspen
© 2022 John Wiley & Sons Ltd.
| Publié dans: | Global change biology. - 1999. - 28(2022), 7 vom: 27. Apr., Seite 2491-2504 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2022
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| Accès à la collection: | Global change biology |
| Sujets: | Journal Article G×E aspen cytotype forest mortality genotype × environment interaction hyperspectral imaging spectroscopy landscape genetics ploidy level |
| Résumé: | © 2022 John Wiley & Sons Ltd. Mapping geographic mosaics of genetic variation and their consequences via genotype x environment interactions at large extents and high resolution has been limited by the scalability of DNA sequencing. Here, we address this challenge for cytotype (chromosome copy number) variation in quaking aspen, a drought-impacted foundation tree species. We integrate airborne imaging spectroscopy data with ground-based DNA sequencing data and canopy damage data in 391 km2 of southwestern Colorado. We show that (1) aspen cover and cytotype can be remotely sensed at 1 m spatial resolution, (2) the geographic mosaic of cytotypes is heterogeneous and interdigitated, (3) triploids have higher leaf nitrogen, canopy water content, and carbon isotope shifts (δ13 C) than diploids, and (4) canopy damage varies among cytotypes and depends on interactions with topography, canopy height, and trait variables. Triploids are at higher risk in hotter and drier conditions |
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| Description: | Date Completed 13.04.2022 Date Revised 13.04.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1365-2486 |
| DOI: | 10.1111/gcb.16064 |