Predictive models using randomForest regression for distribution patterns of meiofauna in Icelandic waters

Predictive models using randomForest regression for distribution patterns of meiofauna in... The exchange of cold polar waters from the north and warm North Atlantic waters from the south is limited by the Greenland-Iceland-Scotland Ridge (GSR) which then may act as a barrier for faunal exchange from the deep Artic and deep Atlantic basins. We investigated the meiofauna density and distribution patterns from different regions north and south of the GSR at water depths between 307 and 2749 m. A total of 84 multicore samples were examined collected during the IceAGE1 (Icelandic marine Animals: Genetics and Ecology) project in summer 2011. We used a gradientForest approach to assess the magnitude of compositional change and the thresholds of remarkable community changes along environmental variables. randomForest regression was applied to predict the meiofauna on a spatial contiguous scale with a set of 23 environmental variables. Meiofauna density ranged between 187 and 3185 individuals per 10 cm2 with the highest densities observed north of the GSR. Nematoda was the most abundant taxon among the meiofauna community, followed by Copepoda and Nauplii. In the Irminger Basin, Gastrotricha was the third most abundant taxon, while in all other regions, Ostracoda was the third most abundant. Food supply, water depth, bottom water oxygen, and hydrographic activity being the most important variables for community changes explain up to 86% of the variation observed in the meiofauna communities. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine Biodiversity Springer Journals

Predictive models using randomForest regression for distribution patterns of meiofauna in Icelandic waters

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Senckenberg Gesellschaft für Naturforschung and Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Life Sciences; Biodiversity; Freshwater & Marine Ecology; Plant Systematics/Taxonomy/Biogeography; Animal Systematics/Taxonomy/Biogeography
ISSN
1867-1616
eISSN
1867-1624
D.O.I.
10.1007/s12526-018-0882-9
Publisher site
See Article on Publisher Site

Abstract

The exchange of cold polar waters from the north and warm North Atlantic waters from the south is limited by the Greenland-Iceland-Scotland Ridge (GSR) which then may act as a barrier for faunal exchange from the deep Artic and deep Atlantic basins. We investigated the meiofauna density and distribution patterns from different regions north and south of the GSR at water depths between 307 and 2749 m. A total of 84 multicore samples were examined collected during the IceAGE1 (Icelandic marine Animals: Genetics and Ecology) project in summer 2011. We used a gradientForest approach to assess the magnitude of compositional change and the thresholds of remarkable community changes along environmental variables. randomForest regression was applied to predict the meiofauna on a spatial contiguous scale with a set of 23 environmental variables. Meiofauna density ranged between 187 and 3185 individuals per 10 cm2 with the highest densities observed north of the GSR. Nematoda was the most abundant taxon among the meiofauna community, followed by Copepoda and Nauplii. In the Irminger Basin, Gastrotricha was the third most abundant taxon, while in all other regions, Ostracoda was the third most abundant. Food supply, water depth, bottom water oxygen, and hydrographic activity being the most important variables for community changes explain up to 86% of the variation observed in the meiofauna communities.

Journal

Marine BiodiversitySpringer Journals

Published: May 2, 2018

References

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