PMID- 34392157 OWN - NLM STAT- MEDLINE DCOM- 20211027 LR - 20211027 IS - 1879-3363 (Electronic) IS - 0025-326X (Linking) VI - 172 DP - 2021 Nov TI - Plasticrusts derive from maritime ropes scouring across raspy rocks. PG - 112841 LID - S0025-326X(21)00875-4 [pii] LID - 10.1016/j.marpolbul.2021.112841 [doi] AB - Plasticrusts are a novel form of plastic debris which has only recently been discovered in Madeira Island, NE Atlantic Ocean. Plasticrusts consist of plastic encrusting wave-exposed rocky intertidal habitats and are presumably generated by waves smashing plastic debris against intertidal rocks. However, direct observations of this process are lacking and it is unknown which type of plastic debris the plasticrusts derive from. Therefore, we examined the Madeira rocky intertidal for signs of plasticrust formation and collected plasticrust and co-occurring plastic debris pieces of matching colors. We examined all collected materials using digital microscopy and Fourier-transform infrared spectroscopy. We found that plasticrusts can result from maritime ropes being scoured across raspy intertidal rocks and that the plasticrusts and the corresponding ropes consisted of polypropylene (PP) and high-density polyethylene (HDPE). Furthermore, we show that high temperatures contribute to plasticrust formation. Thereby, our study provides first insights into the complex plasticrust formation process. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Ehlers, Sonja M AU - Ehlers SM AD - Department of Animal Ecology, Federal Institute of Hydrology, 56068 Koblenz, Germany; Institute for Integrated Natural Sciences, University of Koblenz-Landau, 56070 Koblenz, Germany. Electronic address: Ehlers@bafg.de. FAU - Ellrich, Julius A AU - Ellrich JA AD - Independent Researcher, Hohenzollernstrasse 114, 56068 Koblenz, Germany. FAU - Gestoso, Ignacio AU - Gestoso I AD - MARE - Marine and Environmental Sciences Centre, Agencia Regional para o Desenvolvimento da Investigacao Tecnologia e Inovacao (ARDITI), Edificio Madeira Tecnopolo, Madeira, Portugal; Smithsonian Environmental Research Center, Edgewater, MD, United States. LA - eng PT - Journal Article DEP - 20210812 PL - England TA - Mar Pollut Bull JT - Marine pollution bulletin JID - 0260231 RN - 0 (Plastics) RN - 0 (Waste Products) RN - 0 (Water Pollutants, Chemical) RN - 9002-88-4 (Polyethylene) SB - IM MH - Atlantic Ocean MH - Environmental Monitoring MH - Plastics MH - Polyethylene MH - *Waste Products/analysis MH - *Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Environmental monitoring OT - Fourier-transform infrared spectroscopy (FTIR) OT - Plastic debris OT - Plasticrust formation process OT - Rocky intertidal EDAT- 2021/08/16 06:00 MHDA- 2021/10/28 06:00 CRDT- 2021/08/15 20:53 PHST- 2021/07/28 00:00 [received] PHST- 2021/08/05 00:00 [revised] PHST- 2021/08/06 00:00 [accepted] PHST- 2021/08/16 06:00 [pubmed] PHST- 2021/10/28 06:00 [medline] PHST- 2021/08/15 20:53 [entrez] AID - S0025-326X(21)00875-4 [pii] AID - 10.1016/j.marpolbul.2021.112841 [doi] PST - ppublish SO - Mar Pollut Bull. 2021 Nov;172:112841. doi: 10.1016/j.marpolbul.2021.112841. Epub 2021 Aug 12.