caa a22 4500 445893745 CHVBK 20180317145625.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10750-010-0537-8 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0537-8 Monitoring the dynamics of an invasive emergent macrophyte community using operational remote sensing data [Elektronische Daten] [Thomas Albright, David Ode] Potamogeton crispus L. (curly pondweed) is a cosmopolitan aquatic macrophyte considered invasive in North America and elsewhere. Its range is expanding and, on individual water bodies, its coverage can be dynamic both within and among years. In this study, we evaluate the use of free and low-cost satellite remote sensing data to monitor a problematic emergent macrophyte community dominated by P. crispus. Between 2000 and 2006, we acquired eight satellite images of 24,000-ha Lake Sharpe, South Dakota (USA). During one of the dates for which satellite imagery was acquired, we sampled the lake for P. crispus and other emergent macrophytes using GPS and photography for documentation. We used cluster analysis to assist in classification of the satellite imagery and independently validated results using the field data. Resulting estimates of emergent macrophyte coverage ranged from less than 20ha in 2002 to 245ha in 2004. Accuracy assessment indicated 82% of image pixels were correctly classified, with errors being primarily due to failure to identify emergent macrophytes. These results emphasize the dynamic nature of P. crispus-dominated macrophyte communities and show how they can be effectively monitored over large areas using low-cost remote sensing imagery. While results may vary in other systems depending on water quality and local flora, such an approach could be applied elsewhere and for a variety of macrophyte communities. Springer Science+Business Media B.V., 2010 Curly pondweed nationallicence Remote sensing nationallicence Landsat nationallicence AWiFS nationallicence South Dakota nationallicence Macrophytes nationallicence Monitoring nationallicence Potamogeton crispus nationallicence Albright Thomas SAIC and USGS Center for Earth Resources Observation and Science, Sioux Falls, SD, USA aut Ode David South Dakota Department of Game, Fish, and Parks, Pierre, SD, USA aut Hydrobiologia Springer Netherlands 661/1(2011-02-01), 469-474 0018-8158 661:1<469 2011 661 10750 https://doi.org/10.1007/s10750-010-0537-8 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0537-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Albright Thomas SAIC and USGS Center for Earth Resources Observation and Science, Sioux Falls, SD, USA aut NATIONALLICENCE 700 1- Ode David South Dakota Department of Game, Fish, and Parks, Pierre, SD, USA aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 661/1(2011-02-01), 469-474 0018-8158 661:1<469 2011 661 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer