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dc.contributor.authorDutton, Christopher L
dc.contributor.authorSubalusky, Amanda L
dc.contributor.authorHamilton, Stephen K
dc.contributor.authorRosi, Emma J
dc.contributor.authorPost, David M
dc.date.accessioned2019-07-04T12:35:18Z
dc.date.available2019-07-04T12:35:18Z
dc.date.issued2018
dc.identifier.issn2041-1723
dc.identifier.doi10.1038/s41467-018-04391-6
dc.identifier.urihttp://hdl.handle.net/10072/384944
dc.description.abstractOrganic matter and nutrient loading into aquatic ecosystems affects ecosystem structure and function and can result in eutrophication and hypoxia. Hypoxia is often attributed to anthropogenic pollution and is not common in unpolluted rivers. Here we show that organic matter loading from hippopotami causes the repeated occurrence of hypoxia in the Mara River, East Africa. We documented 49 high flow events over 3 years that caused dissolved oxygen decreases, including 13 events resulting in hypoxia, and 9 fish kills over 5 years. Evidence from experiments and modeling demonstrates a strong mechanistic link between the flushing of hippo pools and decreased dissolved oxygen in the river. This phenomenon may have been more widespread throughout Africa before hippopotamus populations were severely reduced. Frequent hypoxia may be a natural part of tropical river ecosystem function, particularly in rivers impacted by large wildlife.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherNATURE PUBLISHING GROUP
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto10
dc.relation.ispartofjournalNATURE COMMUNICATIONS
dc.relation.ispartofvolume9
dc.subject.fieldofresearchEnvironmental Sciences
dc.subject.fieldofresearchcode05
dc.titleOrganic matter loading by hippopotami causes subsidy overload resulting in downstream hypoxia and fish kills
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionPublished
gro.rights.copyright© The Author(s) 2018. 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.
gro.hasfulltextFull Text
gro.griffith.authorHamilton, Stephen K.


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