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. 2018 May 15;8:7579. doi: 10.1038/s41598-018-25742-9

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(a) Distribution of significant krill hotspots, classified by their re-occurrence, and overlaid on geomorphic features, including: canyon, slope, and shelf habitat; (b) inset, highlighting the frequency of krill hotspots detected with geological habitats; (c,d) areas in the northern and central-northern California Current highlight the association of krill hotspots within canyons and where canyon heads intersect the continental shelf; (e,f) frequency of krill hotspots relative to distance (km) to nearest submarine canyon and shelf break (200 m isobath contour separating shelf and slope habitats). Map created by the authors using ArcGIS (v 10.3.1; ESRI, 2015); see Methods for description of marine geology features.