C:N:P Molar Ratios, Sources and 14C Dating of Surficial Sediments from the NW Slope of Cuba
The surficial sediments recovered from 12 sites located near the channel axis of the Florida Straits and the lower slope off NW Cuba were analyzed for total organic carbon (TOC), nitrogen (TN), phosphorus (TP), elemental C:N:P ratios, C and N isotopic values, and 14C dating. The depth profiles of TO...
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| description | The surficial sediments recovered from 12 sites located near the channel axis of the Florida Straits and the lower slope off NW Cuba were analyzed for total organic carbon (TOC), nitrogen (TN), phosphorus (TP), elemental C:N:P ratios, C and N isotopic values, and 14C dating. The depth profiles of TOC, TN, and TP (0-18 cm) displayed a downcore trend and a significant variation. The TOC values were low (0.15 to 0.62%; 66 to 516 µmol g(-1)). Sites near the island's lower slope had lower TOC average concentrations (158-333 µmol g(-1)) than those closer to the channel axis (averaging 341-516 µmol g(-1); p |
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The depth profiles of TOC, TN, and TP (0-18 cm) displayed a downcore trend and a significant variation. The TOC values were low (0.15 to 0.62%; 66 to 516 µmol g(-1)). Sites near the island's lower slope had lower TOC average concentrations (158-333 µmol g(-1)) than those closer to the channel axis (averaging 341-516 µmol g(-1); p <0.05). The TN concentrations near the lower slope attained 0.11% (80 µmol g(-1)), whereas, towards the channel axis, they decreased to 0.07% (55 µmol g(-1); p<0.05). The C:N ratios ranged from 1.9 to 10.2. The mean molar C:N ratio (5.4) indicated a marine hemipelagic deposition. The TP was lower at sites near the lower slope (38.4 to 50.0 µmol gv; 0.12% to 0.16%) than those near the channel axis (50.0 to 66 µmol g(-1); 0.15 to 0.21%). C:P fluctuated from 7.7 to 14.1 in the surficial sediment layer. The bulk organic δ13Corg and δ15N values confirmed pelagic organic sources, and the 14C dating revealed that the sediments were deposited during the Holocene (1000-5000 yr BP). We suggest that the hydrodynamic conditions in the Straits influence vertical and advective fluxes of particulate organic material trapped in the mixed-layer, which reduces the particulate matter flux to the seabed.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0125562</identifier><identifier>PMID: 26110791</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Bathymetry ; Carbon ; Carbon - analysis ; Carbon 14 ; Chronology ; Cuba ; Dating ; Environmental Monitoring - methods ; Florida ; Fluxes ; Geologic Sediments - chemistry ; Holocene ; Nitrogen ; Nitrogen - analysis ; Organic carbon ; Particulate Matter ; Particulates ; Phosphorus ; Phosphorus - analysis ; Ratios ; Sediments ; Slopes ; Straits ; Total organic carbon ; Trends</subject><ispartof>PloS one, 2015-06, Vol.10 (6), p.e0125562-e0125562</ispartof><rights>2015 de la Lanza Espino, Soto. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2015 de la Lanza Espino, Soto 2015 de la Lanza Espino, Soto</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c456t-e365cf9b78cf56564616d6f0b48cc065a801f8907f6bfaf4df43ebbbbb3a84b33</citedby><cites>FETCH-LOGICAL-c456t-e365cf9b78cf56564616d6f0b48cc065a801f8907f6bfaf4df43ebbbbb3a84b33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4482514/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4482514/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,2100,2919,23857,27915,27916,53782,53784,79361,79362</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26110791$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Rockne, Karl</contributor><creatorcontrib>de la Lanza Espino, Guadalupe</creatorcontrib><creatorcontrib>Soto, Luis A</creatorcontrib><title>C:N:P Molar Ratios, Sources and 14C Dating of Surficial Sediments from the NW Slope of Cuba</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>The surficial sediments recovered from 12 sites located near the channel axis of the Florida Straits and the lower slope off NW Cuba were analyzed for total organic carbon (TOC), nitrogen (TN), phosphorus (TP), elemental C:N:P ratios, C and N isotopic values, and 14C dating. The depth profiles of TOC, TN, and TP (0-18 cm) displayed a downcore trend and a significant variation. The TOC values were low (0.15 to 0.62%; 66 to 516 µmol g(-1)). Sites near the island's lower slope had lower TOC average concentrations (158-333 µmol g(-1)) than those closer to the channel axis (averaging 341-516 µmol g(-1); p <0.05). The TN concentrations near the lower slope attained 0.11% (80 µmol g(-1)), whereas, towards the channel axis, they decreased to 0.07% (55 µmol g(-1); p<0.05). The C:N ratios ranged from 1.9 to 10.2. The mean molar C:N ratio (5.4) indicated a marine hemipelagic deposition. The TP was lower at sites near the lower slope (38.4 to 50.0 µmol gv; 0.12% to 0.16%) than those near the channel axis (50.0 to 66 µmol g(-1); 0.15 to 0.21%). C:P fluctuated from 7.7 to 14.1 in the surficial sediment layer. The bulk organic δ13Corg and δ15N values confirmed pelagic organic sources, and the 14C dating revealed that the sediments were deposited during the Holocene (1000-5000 yr BP). We suggest that the hydrodynamic conditions in the Straits influence vertical and advective fluxes of particulate organic material trapped in the mixed-layer, which reduces the particulate matter flux to the seabed.</description><subject>Bathymetry</subject><subject>Carbon</subject><subject>Carbon - analysis</subject><subject>Carbon 14</subject><subject>Chronology</subject><subject>Cuba</subject><subject>Dating</subject><subject>Environmental Monitoring - methods</subject><subject>Florida</subject><subject>Fluxes</subject><subject>Geologic Sediments - chemistry</subject><subject>Holocene</subject><subject>Nitrogen</subject><subject>Nitrogen - analysis</subject><subject>Organic carbon</subject><subject>Particulate Matter</subject><subject>Particulates</subject><subject>Phosphorus</subject><subject>Phosphorus - analysis</subject><subject>Ratios</subject><subject>Sediments</subject><subject>Slopes</subject><subject>Straits</subject><subject>Total organic carbon</subject><subject>Trends</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>DOA</sourceid><recordid>eNptkstu1DAUhiMEoqXwBggssWHBDL6eJF0goXCrVApiQCxYWCeOPc3IiQc7QeLtSZi0ahHe2Dr-z3cu-rPsMaNrJnL2chfG2KNf70Nv15RxpYDfyY5ZKfgKOBV3b7yPsgcp7ShVogC4nx1xYIzmJTvOflSnF6efycfgMZIvOLQhvSCbCW1sItg3hMmKvJni_ZYERzZjdK1p0ZONbdrO9kMiLoaODJeWXHwnGx_2dhZWY40Ps3sOfbKPlvsk-_bu7dfqw-r80_uz6vX5ykgFw8oKUMaVdV4Yp0CBBAYNOFrLwhgKCgvKXFHS3EHt0MnGSWHr-QgsZC3ESfb0wN37kPSyl6QZlIznkFOYFGcHRRNwp_ex7TD-1gFb_TcQ4lZjHFrjraYNKoYKrQEhwZqykE5CLhRtVMFMObFeLdXGurONmXYQ0d-C3v7p20u9Db-0lAVXTE6A5wsghp-jTYPu2mSs99jbMB76Bsp5Pkuf_SP9_3TyoDIxpBStu26GUT175SpLz17Ri1emtCc3B7lOujKH-AObwrr8</recordid><startdate>20150625</startdate><enddate>20150625</enddate><creator>de la Lanza Espino, Guadalupe</creator><creator>Soto, Luis A</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20150625</creationdate><title>C:N:P Molar Ratios, Sources and 14C Dating of Surficial Sediments from the NW Slope of Cuba</title><author>de la Lanza Espino, Guadalupe ; Soto, Luis A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c456t-e365cf9b78cf56564616d6f0b48cc065a801f8907f6bfaf4df43ebbbbb3a84b33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Bathymetry</topic><topic>Carbon</topic><topic>Carbon - analysis</topic><topic>Carbon 14</topic><topic>Chronology</topic><topic>Cuba</topic><topic>Dating</topic><topic>Environmental Monitoring - methods</topic><topic>Florida</topic><topic>Fluxes</topic><topic>Geologic Sediments - chemistry</topic><topic>Holocene</topic><topic>Nitrogen</topic><topic>Nitrogen - analysis</topic><topic>Organic carbon</topic><topic>Particulate Matter</topic><topic>Particulates</topic><topic>Phosphorus</topic><topic>Phosphorus - analysis</topic><topic>Ratios</topic><topic>Sediments</topic><topic>Slopes</topic><topic>Straits</topic><topic>Total organic carbon</topic><topic>Trends</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>de la Lanza Espino, Guadalupe</creatorcontrib><creatorcontrib>Soto, Luis A</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Proquest Nursing & Allied Health Source</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Immunology Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Agricultural Science Collection</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Public Health Database</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Materials Science Database</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>Meteorological & Geoastrophysical Abstracts - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>de la Lanza Espino, Guadalupe</au><au>Soto, Luis A</au><au>Rockne, Karl</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>C:N:P Molar Ratios, Sources and 14C Dating of Surficial Sediments from the NW Slope of Cuba</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2015-06-25</date><risdate>2015</risdate><volume>10</volume><issue>6</issue><spage>e0125562</spage><epage>e0125562</epage><pages>e0125562-e0125562</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>The surficial sediments recovered from 12 sites located near the channel axis of the Florida Straits and the lower slope off NW Cuba were analyzed for total organic carbon (TOC), nitrogen (TN), phosphorus (TP), elemental C:N:P ratios, C and N isotopic values, and 14C dating. The depth profiles of TOC, TN, and TP (0-18 cm) displayed a downcore trend and a significant variation. The TOC values were low (0.15 to 0.62%; 66 to 516 µmol g(-1)). Sites near the island's lower slope had lower TOC average concentrations (158-333 µmol g(-1)) than those closer to the channel axis (averaging 341-516 µmol g(-1); p <0.05). The TN concentrations near the lower slope attained 0.11% (80 µmol g(-1)), whereas, towards the channel axis, they decreased to 0.07% (55 µmol g(-1); p<0.05). The C:N ratios ranged from 1.9 to 10.2. The mean molar C:N ratio (5.4) indicated a marine hemipelagic deposition. The TP was lower at sites near the lower slope (38.4 to 50.0 µmol gv; 0.12% to 0.16%) than those near the channel axis (50.0 to 66 µmol g(-1); 0.15 to 0.21%). C:P fluctuated from 7.7 to 14.1 in the surficial sediment layer. The bulk organic δ13Corg and δ15N values confirmed pelagic organic sources, and the 14C dating revealed that the sediments were deposited during the Holocene (1000-5000 yr BP). We suggest that the hydrodynamic conditions in the Straits influence vertical and advective fluxes of particulate organic material trapped in the mixed-layer, which reduces the particulate matter flux to the seabed.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>26110791</pmid><doi>10.1371/journal.pone.0125562</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Bathymetry Carbon Carbon - analysis Carbon 14 Chronology Cuba Dating Environmental Monitoring - methods Florida Fluxes Geologic Sediments - chemistry Holocene Nitrogen Nitrogen - analysis Organic carbon Particulate Matter Particulates Phosphorus Phosphorus - analysis Ratios Sediments Slopes Straits Total organic carbon Trends |
| title | C:N:P Molar Ratios, Sources and 14C Dating of Surficial Sediments from the NW Slope of Cuba |
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