{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:18:16Z","timestamp":1760145496955,"version":"build-2065373602"},"reference-count":69,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2024,7,24]],"date-time":"2024-07-24T00:00:00Z","timestamp":1721779200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"USDA NIFA AFRI","award":["00097118","IND011490","NE2001","1021211","PEN04728"],"award-info":[{"award-number":["00097118","IND011490","NE2001","1021211","PEN04728"]}]},{"name":"Hardwood Tree Improvement and Regeneration Center (HTIRC) and the Institute for Digital Forestry at Purdue University","award":["00097118","IND011490","NE2001","1021211","PEN04728"],"award-info":[{"award-number":["00097118","IND011490","NE2001","1021211","PEN04728"]}]},{"name":"USDA NIFA Hatch","award":["00097118","IND011490","NE2001","1021211","PEN04728"],"award-info":[{"award-number":["00097118","IND011490","NE2001","1021211","PEN04728"]}]},{"name":"the Northeast Multistate Chemical Ecology","award":["00097118","IND011490","NE2001","1021211","PEN04728"],"award-info":[{"award-number":["00097118","IND011490","NE2001","1021211","PEN04728"]}]},{"name":"USDA Hatch","award":["00097118","IND011490","NE2001","1021211","PEN04728"],"award-info":[{"award-number":["00097118","IND011490","NE2001","1021211","PEN04728"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Invasive species have historically disrupted environments by outcompeting, displacing, and extirpating native species, resulting in significant environmental and economic damage. Developing approaches to detect the presence of invasive species, favorable habitats for their establishment, and predicting their potential spread are underutilized management strategies to effectively protect the environment and the economy. Spotted lanternfly (SLF, Lycorma delicatula) is a phloem-feeding planthopper native to China that poses a severe threat to horticultural and forest products in the United States. Tools are being developed to contain the spread and damage caused by SLF; however, methods to rapidly detect novel infestations or low-density populations are lacking. Vegetation spectroscopy is an approach that can represent vegetation health through changes in the reflectance and absorption of radiation based on plant physiochemical status. Here, we hypothesize that SLF infestations change the spectral and chemical characteristics of tree canopies. To test this hypothesis, we used a full range spectroradiometer to sample canopy foliage of silver maple (Acer saccharinum) and red maple (Acer rubrum) trees in a common garden in Berks County, Pennsylvania that were exposed to varying levels of SLF infestation. Foliar spectral profiles separated between SLF infestation levels, and the magnitude of separation was greater for the zero-SLF control compared with higher infestation levels. We found the red-edge and portions of the NIR and SWIR regions were most strongly related to SLF infestation densities and that corresponding changes in vegetation indexes related to levels of chlorophyll were influenced by SLF infestations, although we found no change in foliar levels of chlorophyll. We found no influence of SLF densities on levels of primary metabolites (i.e., pigments, nonstructural carbohydrates, carbon, and nitrogen), but did find an increase in the phenolic compound ferulic acid in response to increasing SLF infestations; this response was only in red maple, suggesting a possible species-specific response related to SLF feeding. By identifying changes in spectral and chemical properties of canopy leaves in response to SLF infestation, we can link them together to potentially better understand how trees respond to SLF feeding pressure and more rapidly identify SLF infestations.<\/jats:p>","DOI":"10.3390\/rs16152706","type":"journal-article","created":{"date-parts":[[2024,7,24]],"date-time":"2024-07-24T08:47:17Z","timestamp":1721810837000},"page":"2706","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Influence of Spotted Lanternfly (Lycorma delicatula) on Multiple Maple (Acer spp.) Species Canopy Foliar Spectral and Chemical Profiles"],"prefix":"10.3390","volume":"16","author":[{"given":"Elisabeth G.","family":"Joll","sequence":"first","affiliation":[{"name":"Department of Entomology, Purdue University, West Lafayette, IN 47907, USA"}]},{"given":"Matthew D.","family":"Ginzel","sequence":"additional","affiliation":[{"name":"Department of Entomology, Purdue University, West Lafayette, IN 47907, USA"},{"name":"Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN 47907, USA"}]},{"given":"Kelli","family":"Hoover","sequence":"additional","affiliation":[{"name":"Department of Entomology, The Pennsylvania State University, University Park, PA 16082, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4784-4537","authenticated-orcid":false,"given":"John J.","family":"Couture","sequence":"additional","affiliation":[{"name":"Department of Entomology, Purdue University, West Lafayette, IN 47907, USA"},{"name":"Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN 47907, USA"},{"name":"Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA"}]}],"member":"1968","published-online":{"date-parts":[[2024,7,24]]},"reference":[{"key":"ref_1","first-page":"74","article-title":"Tree mortality following defoliation by the European gypsy moth (Lymantria dispar L.) in the United States: A review","volume":"45","author":"Davidson","year":"1999","journal-title":"For. 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