Patchiness in microbial nitrogen transformations in groundwater in a riparian forest
We measured microbial N transformations in 15 cm diam. by 40 cm intact horizontal sections of aquifer material (mesocosms), taken from a riparian forest in Rhode Island, USA, incubated under ambient conditions. The mesocosms allowed us to measure these transformations on the same scale as hydrologic...
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| Veröffentlicht in: | Journal of environmental quality 1998-01, Vol.27 (1), p.156-164 |
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| creator | Jacinthe, P.A Groffman, P.M Gold, A.J Mosier, A |
| description | We measured microbial N transformations in 15 cm diam. by 40 cm intact horizontal sections of aquifer material (mesocosms), taken from a riparian forest in Rhode Island, USA, incubated under ambient conditions. The mesocosms allowed us to measure these transformations on the same scale as hydrologic tracer methods (Br(-)/NO3(-) ratios) that measure net NO3(-) removal. Our objective was to reconcile discrepancies between hydrologic tracer and microbial measurements in previous studies where laboratory-based microbial NO3(-) consumption measurements were much lower than in situ hydrologic measurements of net NO3(-) removal. We hypothesized that small "patches" of organic matter in the aquifer matrix, which are easily missed when sampling for microbial measurements, are "hotspots" of NO3(-) removal and are responsible for these discrepancies. Mesocosms were subjected to three treatments [Br(-) only, Br(-) + 15NO3(-), Br(-) + 15NO3(-) + dissolved organic carbon (DOC)]. Solution (NH4(+), NO3(-), dissolved organic N) and gaseous (N2O, 15N2O, and 15N2) inputs and outputs to the mesocosms were measured over a 132-d incubation, followed by destructive sampling for the presence of patches and residual 15N in aquifer matrix and patch material. Total (gross) NO3(-) consumption by denitrification and immobilization was greater than net removal of NO3(-) measured by Br(-)/NO3(-) ratios. Net NO3(-), consumption was only observed in mesocosms that contained "patches" of organic matter and was not increased by addition of DOC, suggesting that these patches, which represent 1% of aquifer weight, are critical to groundwater NO3(-) removal in riparian forests |
| doi_str_mv | 10.2134/jeq1998.00472425002700010022x |
| format | Article |
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The mesocosms allowed us to measure these transformations on the same scale as hydrologic tracer methods (Br(-)/NO3(-) ratios) that measure net NO3(-) removal. Our objective was to reconcile discrepancies between hydrologic tracer and microbial measurements in previous studies where laboratory-based microbial NO3(-) consumption measurements were much lower than in situ hydrologic measurements of net NO3(-) removal. We hypothesized that small "patches" of organic matter in the aquifer matrix, which are easily missed when sampling for microbial measurements, are "hotspots" of NO3(-) removal and are responsible for these discrepancies. Mesocosms were subjected to three treatments [Br(-) only, Br(-) + 15NO3(-), Br(-) + 15NO3(-) + dissolved organic carbon (DOC)]. Solution (NH4(+), NO3(-), dissolved organic N) and gaseous (N2O, 15N2O, and 15N2) inputs and outputs to the mesocosms were measured over a 132-d incubation, followed by destructive sampling for the presence of patches and residual 15N in aquifer matrix and patch material. Total (gross) NO3(-) consumption by denitrification and immobilization was greater than net removal of NO3(-) measured by Br(-)/NO3(-) ratios. Net NO3(-), consumption was only observed in mesocosms that contained "patches" of organic matter and was not increased by addition of DOC, suggesting that these patches, which represent 1% of aquifer weight, are critical to groundwater NO3(-) removal in riparian forests</description><identifier>ISSN: 0047-2425</identifier><identifier>EISSN: 1537-2537</identifier><identifier>DOI: 10.2134/jeq1998.00472425002700010022x</identifier><identifier>CODEN: JEVQAA</identifier><language>eng</language><publisher>Madison, WI: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America</publisher><subject>Animal, plant and microbial ecology ; Applied ecology ; Applied sciences ; AZOTE ; Biological and medical sciences ; Biological and physicochemical phenomena ; BOSQUES ; Earth sciences ; Earth, ocean, space ; Ecotoxicology, biological effects of pollution ; Engineering and environment geology. Geothermics ; Exact sciences and technology ; FORESTS ; FORET ; Fresh water environment ; Fundamental and applied biological sciences. Psychology ; GROUNDWATER POLLUTION ; Natural water pollution ; NITROGEN ; NITROGENO ; Pollution ; POLLUTION DE L'EAU SOUTERRAINE ; Pollution, environment geology ; POLUCION DE AGUAS SUBTERRANEAS ; Riparian forests ; Water treatment and pollution</subject><ispartof>Journal of environmental quality, 1998-01, Vol.27 (1), p.156-164</ispartof><rights>1998 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America</rights><rights>1998 INIST-CNRS</rights><rights>Copyright American Society of Agronomy, Inc. Jan/Feb 1998</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a483X-669e154eb0a16462a53e65173199b3e262aa4c447da2bd1dfdd2ec5a2d71ba833</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.2134%2Fjeq1998.00472425002700010022x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.2134%2Fjeq1998.00472425002700010022x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2206206$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Jacinthe, P.A</creatorcontrib><creatorcontrib>Groffman, P.M</creatorcontrib><creatorcontrib>Gold, A.J</creatorcontrib><creatorcontrib>Mosier, A</creatorcontrib><title>Patchiness in microbial nitrogen transformations in groundwater in a riparian forest</title><title>Journal of environmental quality</title><description>We measured microbial N transformations in 15 cm diam. by 40 cm intact horizontal sections of aquifer material (mesocosms), taken from a riparian forest in Rhode Island, USA, incubated under ambient conditions. The mesocosms allowed us to measure these transformations on the same scale as hydrologic tracer methods (Br(-)/NO3(-) ratios) that measure net NO3(-) removal. Our objective was to reconcile discrepancies between hydrologic tracer and microbial measurements in previous studies where laboratory-based microbial NO3(-) consumption measurements were much lower than in situ hydrologic measurements of net NO3(-) removal. We hypothesized that small "patches" of organic matter in the aquifer matrix, which are easily missed when sampling for microbial measurements, are "hotspots" of NO3(-) removal and are responsible for these discrepancies. Mesocosms were subjected to three treatments [Br(-) only, Br(-) + 15NO3(-), Br(-) + 15NO3(-) + dissolved organic carbon (DOC)]. Solution (NH4(+), NO3(-), dissolved organic N) and gaseous (N2O, 15N2O, and 15N2) inputs and outputs to the mesocosms were measured over a 132-d incubation, followed by destructive sampling for the presence of patches and residual 15N in aquifer matrix and patch material. Total (gross) NO3(-) consumption by denitrification and immobilization was greater than net removal of NO3(-) measured by Br(-)/NO3(-) ratios. Net NO3(-), consumption was only observed in mesocosms that contained "patches" of organic matter and was not increased by addition of DOC, suggesting that these patches, which represent 1% of aquifer weight, are critical to groundwater NO3(-) removal in riparian forests</description><subject>Animal, plant and microbial ecology</subject><subject>Applied ecology</subject><subject>Applied sciences</subject><subject>AZOTE</subject><subject>Biological and medical sciences</subject><subject>Biological and physicochemical phenomena</subject><subject>BOSQUES</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Ecotoxicology, biological effects of pollution</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Exact sciences and technology</subject><subject>FORESTS</subject><subject>FORET</subject><subject>Fresh water environment</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>GROUNDWATER POLLUTION</subject><subject>Natural water pollution</subject><subject>NITROGEN</subject><subject>NITROGENO</subject><subject>Pollution</subject><subject>POLLUTION DE L'EAU SOUTERRAINE</subject><subject>Pollution, environment geology</subject><subject>POLUCION DE AGUAS SUBTERRANEAS</subject><subject>Riparian forests</subject><subject>Water treatment and pollution</subject><issn>0047-2425</issn><issn>1537-2537</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqVkEtLxDAUhYMoOD5-glBE3VXzajKzcCHiE0FFBcFFuG3TMUMnGZMO6r_31hlciBshySXhu-fcHEL2GT3kTMijiX1jo9HwkFKpueQFpVxTShlW_rFCBqwQOud4rJJBz-Q9tE42UpogxalWA_J4B1316rxNKXM-m7oqhtJBm3nXxTC2Pusi-NSEOIXOBf9NjWOY-_odOhv7K2TRzSA68BlyNnVbZK2BNtntZd0kT-dnj6eX-c3txdXpyU0Ociiec6VGlhXSlhSYkopDIawqmBb4q1JYji8gKyl1DbysWd3UNbdVAbzWrIShEJvkYKE7i-FtjsZm6lJl2xa8DfNkmCo4lUojuPsLnIR59DibYSMttGKyQOh4AWEEKUXbmFl0U4ifhlHTB26WgZs_A8f-vaUJpAraBnOrXPoR4ZwqXIi9LLB319rP_3mY67N7jrsn_gKeUX1nod5AMDCOOMDTA-KaagxSii9Z8KNk</recordid><startdate>199801</startdate><enddate>199801</enddate><creator>Jacinthe, P.A</creator><creator>Groffman, P.M</creator><creator>Gold, A.J</creator><creator>Mosier, A</creator><general>American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America</general><general>Crop Science Society of America</general><general>American Society of Agronomy</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7ST</scope><scope>7T7</scope><scope>7TG</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>88I</scope><scope>8AF</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>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KL.</scope><scope>L6V</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>P64</scope><scope>PATMY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>S0X</scope><scope>SOI</scope><scope>7TV</scope><scope>7UA</scope></search><sort><creationdate>199801</creationdate><title>Patchiness in microbial nitrogen transformations in groundwater in a riparian forest</title><author>Jacinthe, P.A ; Groffman, P.M ; Gold, A.J ; Mosier, A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a483X-669e154eb0a16462a53e65173199b3e262aa4c447da2bd1dfdd2ec5a2d71ba833</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Animal, plant and microbial ecology</topic><topic>Applied ecology</topic><topic>Applied sciences</topic><topic>AZOTE</topic><topic>Biological and medical sciences</topic><topic>Biological and physicochemical phenomena</topic><topic>BOSQUES</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Ecotoxicology, biological effects of pollution</topic><topic>Engineering and environment geology. 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Psychology</topic><topic>GROUNDWATER POLLUTION</topic><topic>Natural water pollution</topic><topic>NITROGEN</topic><topic>NITROGENO</topic><topic>Pollution</topic><topic>POLLUTION DE L'EAU SOUTERRAINE</topic><topic>Pollution, environment geology</topic><topic>POLUCION DE AGUAS SUBTERRANEAS</topic><topic>Riparian forests</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jacinthe, P.A</creatorcontrib><creatorcontrib>Groffman, P.M</creatorcontrib><creatorcontrib>Gold, A.J</creatorcontrib><creatorcontrib>Mosier, A</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Meteorological & Geoastrophysical 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>Science Database (Alumni Edition)</collection><collection>STEM Database</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>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>eLibrary</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 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>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>ProQuest Engineering Collection</collection><collection>Agricultural Science Database</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>SIRS Editorial</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><jtitle>Journal of environmental quality</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jacinthe, P.A</au><au>Groffman, P.M</au><au>Gold, A.J</au><au>Mosier, A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Patchiness in microbial nitrogen transformations in groundwater in a riparian forest</atitle><jtitle>Journal of environmental quality</jtitle><date>1998-01</date><risdate>1998</risdate><volume>27</volume><issue>1</issue><spage>156</spage><epage>164</epage><pages>156-164</pages><issn>0047-2425</issn><eissn>1537-2537</eissn><coden>JEVQAA</coden><abstract>We measured microbial N transformations in 15 cm diam. by 40 cm intact horizontal sections of aquifer material (mesocosms), taken from a riparian forest in Rhode Island, USA, incubated under ambient conditions. 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Solution (NH4(+), NO3(-), dissolved organic N) and gaseous (N2O, 15N2O, and 15N2) inputs and outputs to the mesocosms were measured over a 132-d incubation, followed by destructive sampling for the presence of patches and residual 15N in aquifer matrix and patch material. Total (gross) NO3(-) consumption by denitrification and immobilization was greater than net removal of NO3(-) measured by Br(-)/NO3(-) ratios. Net NO3(-), consumption was only observed in mesocosms that contained "patches" of organic matter and was not increased by addition of DOC, suggesting that these patches, which represent 1% of aquifer weight, are critical to groundwater NO3(-) removal in riparian forests</abstract><cop>Madison, WI</cop><pub>American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America</pub><doi>10.2134/jeq1998.00472425002700010022x</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Journal of environmental quality, 1998-01, Vol.27 (1), p.156-164 |
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| subjects | Animal, plant and microbial ecology Applied ecology Applied sciences AZOTE Biological and medical sciences Biological and physicochemical phenomena BOSQUES Earth sciences Earth, ocean, space Ecotoxicology, biological effects of pollution Engineering and environment geology. Geothermics Exact sciences and technology FORESTS FORET Fresh water environment Fundamental and applied biological sciences. Psychology GROUNDWATER POLLUTION Natural water pollution NITROGEN NITROGENO Pollution POLLUTION DE L'EAU SOUTERRAINE Pollution, environment geology POLUCION DE AGUAS SUBTERRANEAS Riparian forests Water treatment and pollution |
| title | Patchiness in microbial nitrogen transformations in groundwater in a riparian forest |
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