Importance of sampling frequency when collecting diatoms

Handle URI:
http://hdl.handle.net/10754/621830
Title:
Importance of sampling frequency when collecting diatoms
Authors:
Wu, Naicheng; Faber, Claas; Sun, Xiuming; Qu, Yueming; Wang, Chao; Ivetic, Snjezana; Riis, Tenna; Ulrich, Uta; Fohrer, Nicola
Abstract:
There has been increasing interest in diatom-based bio-assessment but we still lack a comprehensive understanding of how to capture diatoms’ temporal dynamics with an appropriate sampling frequency (ASF). To cover this research gap, we collected and analyzed daily riverine diatom samples over a 1-year period (25 April 2013–30 April 2014) at the outlet of a German lowland river. The samples were classified into five clusters (1–5) by a Kohonen Self-Organizing Map (SOM) method based on similarity between species compositions over time. ASFs were determined to be 25 days at Cluster 2 (June-July 2013) and 13 days at Cluster 5 (February-April 2014), whereas no specific ASFs were found at Cluster 1 (April-May 2013), 3 (August-November 2013) (>30 days) and Cluster 4 (December 2013 - January 2014) (<1 day). ASFs showed dramatic seasonality and were negatively related to hydrological wetness conditions, suggesting that sampling interval should be reduced with increasing catchment wetness. A key implication of our findings for freshwater management is that long-term bio-monitoring protocols should be developed with the knowledge of tracking algal temporal dynamics with an appropriate sampling frequency.
KAUST Department:
Marine Science Program; Red Sea Research Center (RSRC)
Citation:
Wu N, Faber C, Sun X, Qu Y, Wang C, et al. (2016) Importance of sampling frequency when collecting diatoms. Scientific Reports 6: 36950. Available: http://dx.doi.org/10.1038/srep36950.
Publisher:
Springer Nature
Journal:
Scientific Reports
Issue Date:
14-Nov-2016
DOI:
10.1038/srep36950
Type:
Article
ISSN:
2045-2322
Sponsors:
This study was supported financially by a DFG grant (FO 301/15-1, FO 301/15-2, WU 749/1-1, WU 749/1-2) (N. Wu, C. Faber), AIAS CO-FUND funding (N. Wu) and China Scholarship Council (CSC) (X. Sun, Y. Qu). We would like to thank Dr. Jessica Barker for the English polishing, Mrs. Monika Westphal, Mrs. Bettina Hollmann and student assistances for their support during the field campaigns. B. Messyasz, M. Kokociński and C. Wetzel helped greatly with the diatom identification. The constructive comments of two anonymous reviewers greatly improved our manuscript.
Additional Links:
http://www.nature.com/articles/srep36950
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Marine Science Program

Full metadata record

DC FieldValue Language
dc.contributor.authorWu, Naichengen
dc.contributor.authorFaber, Claasen
dc.contributor.authorSun, Xiumingen
dc.contributor.authorQu, Yuemingen
dc.contributor.authorWang, Chaoen
dc.contributor.authorIvetic, Snjezanaen
dc.contributor.authorRiis, Tennaen
dc.contributor.authorUlrich, Utaen
dc.contributor.authorFohrer, Nicolaen
dc.date.accessioned2016-11-17T09:00:07Z-
dc.date.available2016-11-17T09:00:07Z-
dc.date.issued2016-11-14en
dc.identifier.citationWu N, Faber C, Sun X, Qu Y, Wang C, et al. (2016) Importance of sampling frequency when collecting diatoms. Scientific Reports 6: 36950. Available: http://dx.doi.org/10.1038/srep36950.en
dc.identifier.issn2045-2322en
dc.identifier.doi10.1038/srep36950en
dc.identifier.urihttp://hdl.handle.net/10754/621830-
dc.description.abstractThere has been increasing interest in diatom-based bio-assessment but we still lack a comprehensive understanding of how to capture diatoms’ temporal dynamics with an appropriate sampling frequency (ASF). To cover this research gap, we collected and analyzed daily riverine diatom samples over a 1-year period (25 April 2013–30 April 2014) at the outlet of a German lowland river. The samples were classified into five clusters (1–5) by a Kohonen Self-Organizing Map (SOM) method based on similarity between species compositions over time. ASFs were determined to be 25 days at Cluster 2 (June-July 2013) and 13 days at Cluster 5 (February-April 2014), whereas no specific ASFs were found at Cluster 1 (April-May 2013), 3 (August-November 2013) (>30 days) and Cluster 4 (December 2013 - January 2014) (<1 day). ASFs showed dramatic seasonality and were negatively related to hydrological wetness conditions, suggesting that sampling interval should be reduced with increasing catchment wetness. A key implication of our findings for freshwater management is that long-term bio-monitoring protocols should be developed with the knowledge of tracking algal temporal dynamics with an appropriate sampling frequency.en
dc.description.sponsorshipThis study was supported financially by a DFG grant (FO 301/15-1, FO 301/15-2, WU 749/1-1, WU 749/1-2) (N. Wu, C. Faber), AIAS CO-FUND funding (N. Wu) and China Scholarship Council (CSC) (X. Sun, Y. Qu). We would like to thank Dr. Jessica Barker for the English polishing, Mrs. Monika Westphal, Mrs. Bettina Hollmann and student assistances for their support during the field campaigns. B. Messyasz, M. Kokociński and C. Wetzel helped greatly with the diatom identification. The constructive comments of two anonymous reviewers greatly improved our manuscript.en
dc.publisherSpringer Natureen
dc.relation.urlhttp://www.nature.com/articles/srep36950en
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleImportance of sampling frequency when collecting diatomsen
dc.typeArticleen
dc.contributor.departmentMarine Science Programen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalScientific Reportsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Hydrology and Water Resources Management, Institute for Natural Resource Conservation, Kiel University, 24118 Kiel, Germanyen
dc.contributor.institutionAarhus Institute of Advanced Studies, Aarhus University, Høegh-Guldbergs Gade 6B, 8000 Aarhus C, Denmarken
dc.contributor.institutionDepartment of Bioscience, Aarhus University, Ole Worms Allé 1, 8000 Aarhus C, Denmarken
dc.contributor.institutionPearl River Fisheries Research Institute, Chinese Academy of Fishery Science, 510380 Guangzhou, Chinaen
kaust.authorIvetic, Snjezanaen
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