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dc.contributor.authorBrankovits, David  Concept link
dc.contributor.authorPohlman, John W.  Concept link
dc.contributor.authorNiemann, Helge  Concept link
dc.contributor.authorLeigh, Mary Beth  Concept link
dc.contributor.authorLeewis, Mary-Cathrine  Concept link
dc.contributor.authorBecker, Kevin W.  Concept link
dc.contributor.authorIliffe, Thomas  Concept link
dc.contributor.authorAlvarez, Fernando  Concept link
dc.contributor.authorLehmann, Moritz F.  Concept link
dc.contributor.authorPhillips, Bil  Concept link
dc.date.accessioned2017-12-04T18:20:51Z
dc.date.available2017-12-04T18:20:51Z
dc.date.issued2017-11-28
dc.identifier.citationNature Communications 8 (2017): 1835en_US
dc.identifier.urihttps://hdl.handle.net/1912/9405
dc.description© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Nature Communications 8 (2017): 1835, doi:10.1038/s41467-017-01776-x.en_US
dc.description.abstractSubterranean estuaries extend inland into density-stratified coastal carbonate aquifers containing a surprising diversity of endemic animals (mostly crustaceans) within a highly oligotrophic habitat. How complex ecosystems (termed anchialine) thrive in this globally distributed, cryptic environment is poorly understood. Here, we demonstrate that a microbial loop shuttles methane and dissolved organic carbon (DOC) to higher trophic levels of the anchialine food web in the Yucatan Peninsula (Mexico). Methane and DOC production and consumption within the coastal groundwater correspond with a microbial community capable of methanotrophy, heterotrophy, and chemoautotrophy, based on characterization by 16S rRNA gene amplicon sequencing and respiratory quinone composition. Fatty acid and bulk stable carbon isotope values of cave-adapted shrimp suggest that carbon from methanotrophic bacteria comprises 21% of their diet, on average. These findings reveal a heretofore unrecognized subterranean methane sink and contribute to our understanding of the carbon cycle and ecosystem function of karst subterranean estuaries.en_US
dc.description.sponsorshipFunding for T.M.I. and D.B. was provided by TAMU-CONACYT (project no: 2015-049). D.B. was supported by Research-in-Residence program (NSF award #1137336, Inter-University Training in Continental-scale Ecology), Cave Research Foundation Graduate Student Grant, Cave Conservancy Foundation PhD Fellowship, Ralph W. Stone Fellowship (National Speleological Society), Grants-in-Aid of Graduate Student Research Award (Texas Sea Grant College Program), and Boost Fellowship (Texas A&M University at Galveston). Additional financial support was provided by NSF DEB-1257424 (M.B.L. and M.C.L.), the Postdoctoral Program at Woods Hole Oceanographic Institution and U.S. Geological Survey (K.W.B.).en_US
dc.language.isoen_USen_US
dc.publisherNature Publishing Groupen_US
dc.relation.urihttps://doi.org/10.1038/s41467-017-01776-x
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleMethane- and dissolved organic carbon-fueled microbial loop supports a tropical subterranean estuary ecosystemen_US
dc.typeArticleen_US
dc.identifier.doi10.1038/s41467-017-01776-x


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International