Nitrogen mineralization, nitrification and denitrification in upland and wetland ecosystems
dc.contributor.author | Zak, Donald R. | en_US |
dc.contributor.author | Grigal, David F. | en_US |
dc.date.accessioned | 2006-09-11T19:23:49Z | |
dc.date.available | 2006-09-11T19:23:49Z | |
dc.date.issued | 1991-10 | en_US |
dc.identifier.citation | Zak, Donald R.; Grigal, David F.; (1991). "Nitrogen mineralization, nitrification and denitrification in upland and wetland ecosystems." Oecologia 88(2): 189-196. <http://hdl.handle.net/2027.42/47791> | en_US |
dc.identifier.issn | 0029-8549 | en_US |
dc.identifier.issn | 1432-1939 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/47791 | |
dc.description.abstract | Nitrogen mineralization, nitrification, denitrification, and microbial biomass were evaluated in four representative ecosystems in east-central Minnesota. The study ecosystems included: old field, swamp forest, savanna, and upland pin oak forest. Due to a high regional water table and permeable soils, the upland and wetland ecosystems were separated by relatively short distances (2 to 5 m). Two randomly selected sites within each ecosystem were sampled for an entire growing season. Soil samples were collected at 5-week intervals to determine rates of N cycling processes and changes in microbial biomass. Mean daily N mineralization rates during five-week in situ soil incubations were significantly different among sampling dates and ecosystems. The highest annual rates were measured in the upland pin oak ecosystem (8.6 g N m −2 yr −1 ), and the lowest rates in the swamp forest (1.5 g N m −2 yr −1 ); nitrification followed an identical pattern. Denitrification was relatively high in the swamp forest during early spring (8040 μg N 2 O−N m −2 d −1 ) and late autumn (2525 μg N 2 O−N m −2 d −1 ); nitrification occurred at rates sufficient to sustain these losses. In the well-drained uplands, rates of denitrification were generally lower and equivalent to rates of atmospheric N inputs. Microbial C and N were consistently higher in the swamp forest than in the other ecosystems; both were positively correlated with average daily rates of N mineralization. In the subtle landscape of east-central Minnesota, rates of N cycling can differ by an order of magnitude across relatively short distances. | en_US |
dc.format.extent | 1006076 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Springer-Verlag | en_US |
dc.subject.other | Spatial Variability | en_US |
dc.subject.other | Microbial Biomass | en_US |
dc.subject.other | Denitrification | en_US |
dc.subject.other | Nitrification | en_US |
dc.subject.other | Ecology | en_US |
dc.subject.other | N Mineralization | en_US |
dc.subject.other | Plant Sciences | en_US |
dc.subject.other | Life Sciences | en_US |
dc.title | Nitrogen mineralization, nitrification and denitrification in upland and wetland ecosystems | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Soil Science, University of Minnesota, 55108, St. Paul, MN, USA; Department of Ecology, Evolution, and Behavior, University of Minnesota, 55108, St. Paul, MN, USA; School of Natural Resources, University of Michigan, 48109-1115, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationother | Department of Ecology, Evolution, and Behavior, University of Minnesota, 55108, St. Paul, MN, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/47791/1/442_2004_Article_BF00320810.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00320810 | en_US |
dc.identifier.source | Oecologia | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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