{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T10:37:16Z","timestamp":1780396636284,"version":"3.54.1"},"reference-count":101,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2015,5,19]],"date-time":"2015-05-19T00:00:00Z","timestamp":1431993600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004955","name":"Austrian Research Promotion Agency","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004955","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Airborne LiDAR Bathymetry (ALB) has been rapidly evolving in recent years and now allows fluvial topography to be mapped in high resolution (&gt;20 points\/m2) and height accuracy (&lt;10 cm) for both the aquatic and the riparian area. This article presents methods for enhanced modeling and monitoring of instream meso- and microhabitats based on multitemporal data acquisition. This is demonstrated for a near natural reach of the Pielach River, with data acquired from April 2013 to October 2014, covering two flood events. In comparison with topographic laser scanning, ALB requires a number of specific processing steps. We present, firstly, a novel approach for modeling the water surface in the case of sparse water surface echoes and, secondly, a strategy for improved filtering and modeling of the Digital Terrain Model of the Watercourse (DTM-W). Based on the multitemporal DTM-W we discuss the massive changes of the fluvial topography exhibiting deposition\/erosion of 103 m3 caused by the 30-years flood event in May 2014. Furthermore, for the first time, such a high-resolution data source is used for monitoring of hydro-morphological units (mesohabitat scale) including the consequences for the target fish species nase (Chondrostoma nasus, microhabitat scale). The flood events caused a spatial displacement of the hydro-morphological units but did not effect their overall frequency distribution, which is considered an important habitat feature as it documents resilience against disturbances.<\/jats:p>","DOI":"10.3390\/rs70506160","type":"journal-article","created":{"date-parts":[[2015,5,19]],"date-time":"2015-05-19T10:35:57Z","timestamp":1432031757000},"page":"6160-6195","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":124,"title":["Topo-Bathymetric LiDAR for Monitoring River Morphodynamics and Instream Habitats\u2014A Case Study at the Pielach River"],"prefix":"10.3390","volume":"7","author":[{"given":"Gottfried","family":"Mandlburger","sequence":"first","affiliation":[{"name":"Department of Geodesy and Geoinformation (E120.7), Vienna University of Technology, Gusshausstr. 27-29, A-1040 Vienna, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"Hauer","sequence":"additional","affiliation":[{"name":"Institute for Water Management, Hydrology and Hydraulic Engineering, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Wieser","sequence":"additional","affiliation":[{"name":"Department of Geodesy and Geoinformation (E120.7), Vienna University of Technology, Gusshausstr. 27-29, A-1040 Vienna, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2348-7929","authenticated-orcid":false,"given":"Norbert","family":"Pfeifer","sequence":"additional","affiliation":[{"name":"Department of Geodesy and Geoinformation (E120.7), Vienna University of Technology, Gusshausstr. 27-29, A-1040 Vienna, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2015,5,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"116","DOI":"10.1016\/j.jnc.2010.07.003","article-title":"Integrating remote sensing in Natura 2000 habitat monitoring: Prospects on the way forward","volume":"19","author":"Borre","year":"2011","journal-title":"J. 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