{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,30]],"date-time":"2026-03-30T20:38:45Z","timestamp":1774903125783,"version":"3.50.1"},"reference-count":68,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2022,7,18]],"date-time":"2022-07-18T00:00:00Z","timestamp":1658102400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation\u2019s Environmental Engineering Program","doi-asserted-by":"publisher","award":["EnvE-1928048"],"award-info":[{"award-number":["EnvE-1928048"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Uncrewed aerial systems (UASs) have emerged as powerful ecological observation platforms capable of filling critical spatial and spectral observation gaps in plant physiological and phenological traits that have been difficult to measure from space-borne sensors. Despite recent technological advances, the high cost of drone-borne sensors limits the widespread application of UAS technology across scientific disciplines. Here, we evaluate the tradeoffs between off-the-shelf and sophisticated drone-borne sensors for mapping plant species and plant functional types (PFTs) within a diverse grassland. Specifically, we compared species and PFT mapping accuracies derived from hyperspectral, multispectral, and RGB imagery fused with light detection and ranging (LiDAR) or structure-for-motion (SfM)-derived canopy height models (CHM). Sensor\u2013data fusion were used to consider either a single observation period or near-monthly observation frequencies for integration of phenological information (i.e., phenometrics). Results indicate that overall classification accuracies for plant species and PFTs were highest in hyperspectral and LiDAR-CHM fusions (78 and 89%, respectively), followed by multispectral and phenometric\u2013SfM\u2013CHM fusions (52 and 60%, respectively) and RGB and SfM\u2013CHM fusions (45 and 47%, respectively). Our findings demonstrate clear tradeoffs in mapping accuracies from economical versus exorbitant sensor networks but highlight that off-the-shelf multispectral sensors may achieve accuracies comparable to those of sophisticated UAS sensors by integrating phenometrics into machine learning image classifiers.<\/jats:p>","DOI":"10.3390\/rs14143453","type":"journal-article","created":{"date-parts":[[2022,7,19]],"date-time":"2022-07-19T00:19:21Z","timestamp":1658189961000},"page":"3453","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Multisensor UAS mapping of Plant Species and Plant Functional Types in Midwestern Grasslands"],"prefix":"10.3390","volume":"14","author":[{"given":"Emma C.","family":"Hall","sequence":"first","affiliation":[{"name":"Department of Geography & GIS, University of Illinois, Urbana, IL 61801, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4670-7031","authenticated-orcid":false,"given":"Mark J.","family":"Lara","sequence":"additional","affiliation":[{"name":"Department of Geography & GIS, University of Illinois, Urbana, IL 61801, USA"},{"name":"Department of Plant Biology, University of Illinois, Urbana, IL 61801, USA"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"19468","DOI":"10.1038\/s41598-021-98497-5","article-title":"UAV Reveals Substantial but Heterogeneous Effects of Herbivores on Arctic Vegetation","volume":"11","author":"Siewert","year":"2021","journal-title":"Sci. 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