{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,13]],"date-time":"2025-11-13T07:14:41Z","timestamp":1763018081980,"version":"build-2065373602"},"reference-count":71,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2019,10,12]],"date-time":"2019-10-12T00:00:00Z","timestamp":1570838400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000104","name":"National Aeronautics and Space Administration","doi-asserted-by":"publisher","award":["NNX14AP06G","80NSSC17K0365","80NSSC17K0258"],"award-info":[{"award-number":["NNX14AP06G","80NSSC17K0365","80NSSC17K0258"]}],"id":[{"id":"10.13039\/100000104","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The spatial extent and vegetation characteristics of tidal wetlands and their change are among the biggest unknowns and largest sources of uncertainty in modeling ecosystem processes and services at the land-ocean interface. Using a combination of moderate-high spatial resolution (\u226430 meters) optical and synthetic aperture radar (SAR) satellite imagery, we evaluated several approaches for mapping and characterization of wetlands of the Chesapeake and Delaware Bays. Sentinel-1A, Phased Array type L-band Synthetic Aperture Radar (PALSAR), PALSAR-2, Sentinel-2A, and Landsat 8 imagery were used to map wetlands, with an emphasis on mapping tidal marshes, inundation extents, and functional vegetation classes (persistent vs. non-persistent). We performed initial characterizations at three target wetlands study sites with distinct geomorphologies, hydrologic characteristics, and vegetation communities. We used findings from these target wetlands study sites to inform the selection of timeseries satellite imagery for a regional scale random forest-based classification of wetlands in the Chesapeake and Delaware Bays. Acquisition of satellite imagery, raster manipulations, and timeseries analyses were performed using Google Earth Engine. Random forest classifications were performed using the R programming language. In our regional scale classification, estuarine emergent wetlands were mapped with a producer\u2019s accuracy greater than 88% and a user\u2019s accuracy greater than 83%. Within target wetland sites, functional classes of vegetation were mapped with over 90% user\u2019s and producer\u2019s accuracy for all classes, and greater than 95% accuracy overall. The use of multitemporal SAR and multitemporal optical imagery discussed here provides a straightforward yet powerful approach for accurately mapping tidal freshwater wetlands through identification of non-persistent vegetation, as well as for mapping estuarine emergent wetlands, with direct applications to the improved management of coastal wetlands.<\/jats:p>","DOI":"10.3390\/rs11202366","type":"journal-article","created":{"date-parts":[[2019,10,14]],"date-time":"2019-10-14T03:54:13Z","timestamp":1571025253000},"page":"2366","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Evaluation of Approaches for Mapping Tidal Wetlands of the Chesapeake and Delaware Bays"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7957-5488","authenticated-orcid":false,"given":"Brian T.","family":"Lamb","sequence":"first","affiliation":[{"name":"Department of Earth and Atmospheric Sciences, The City College of New York, City University of New York, New York, NY 10031, USA"},{"name":"Earth and Environmental Sciences Program, The Graduate Center, City University of New York, New York, NY 10016, USA"}]},{"given":"Maria A.","family":"Tzortziou","sequence":"additional","affiliation":[{"name":"Department of Earth and Atmospheric Sciences, The City College of New York, City University of New York, New York, NY 10031, USA"},{"name":"NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA"}]},{"given":"Kyle C.","family":"McDonald","sequence":"additional","affiliation":[{"name":"Department of Earth and Atmospheric Sciences, The City College of New York, City University of New York, New York, NY 10031, USA"},{"name":"Earth and Environmental Sciences Program, The Graduate Center, City University of New York, New York, NY 10016, USA"},{"name":"Carbon Cycle and Ecosystems Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA"}]}],"member":"1968","published-online":{"date-parts":[[2019,10,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"763","DOI":"10.1007\/s12237-013-9702-4","article-title":"Contemporary rates of carbon sequestration through vertical accretion of sediments in mangrove forests and saltmarshes of South East Queensland, Australia","volume":"37","author":"Lovelock","year":"2014","journal-title":"Estuaries Coasts"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"552","DOI":"10.1890\/110004","article-title":"A blueprint for blue carbon: Toward an improved understanding of the role of vegetated coastal habitats in sequestering CO2","volume":"9","author":"McLeod","year":"2011","journal-title":"Front. 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