Factors affecting ammonium uptake in streams - an Inter.-biome perspective
24 Páginas 10 Figuras 4 Tablas 1. The Lotic Intersite Nitrogen eXperiment (LINX) was a coordinated study of the relationships between North American biomes and factors governing ammonium uptake in streams. Our objective was to relate inter-biome variability of ammonium uptake to physical, chemical a...
Published in: | Freshwater Biology |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
John Wiley & Sons
2003
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/37329 https://doi.org/10.1046/j.1365-2427.2003.01094.x |
id |
ftcsic:oai:digital.csic.es:10261/37329 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/37329 2024-02-11T10:01:33+01:00 Factors affecting ammonium uptake in streams - an Inter.-biome perspective Webster, J. R. Mulholland, P. J. Tank, J. L. Valett, H. M. Dodds, W. K. Peterson, B. J. Bowden, W. B. Dahm, Clifford N. Findaly, S. Gregory, S. V. Grimm, N. B. Hamilton, S. K. Johnson, S. L. Martí, Eugènia McDowell, W. H. Meyer, J. L. Morrall, D. D. Thomas, S. A. Wollheim, W. M. 2003-08 http://hdl.handle.net/10261/37329 https://doi.org/10.1046/j.1365-2427.2003.01094.x en eng John Wiley & Sons http://dx.doi.org/10.1046/j.1365-2427.2003.01094.x Freshwater Biology 48(8) 1329-1352 (2003) 0046-5070 http://hdl.handle.net/10261/37329 doi:10.1046/j.1365-2427.2003.01094.x none Biome Metabolism Nitrogen Stable isotope Transient storage artículo http://purl.org/coar/resource_type/c_6501 2003 ftcsic https://doi.org/10.1046/j.1365-2427.2003.01094.x 2024-01-16T09:32:27Z 24 Páginas 10 Figuras 4 Tablas 1. The Lotic Intersite Nitrogen eXperiment (LINX) was a coordinated study of the relationships between North American biomes and factors governing ammonium uptake in streams. Our objective was to relate inter-biome variability of ammonium uptake to physical, chemical and biological processes. 2. Data were collected from 11 streams ranging from arctic to tropical and from desert to rainforest. Measurements at each site included physical, hydraulic and chemical characteristics, biological parameters, whole-stream metabolism and ammonium uptake. Ammonium uptake was measured by injection of 15N-ammonium and downstream measurements of 15N-ammonium concentration. 3. We found no general, statistically significant relationships that explained the variability in ammonium uptake among sites. However, this approach does not account for the multiple mechanisms of ammonium uptake in streams. When we estimated biological demand for inorganic nitrogen based on our measurements of in-stream metabolism, we found good correspondence between calculated nitrogen demand and measured assimilative nitrogen uptake. 4. Nitrogen uptake varied little among sites, reflecting metabolic compensation in streams in a variety of distinctly different biomes (autotrophic production is high where allochthonous inputs are relatively low and vice versa). 5. Both autotrophic and heterotrophic metabolism require nitrogen and these biotic processes dominate inorganic nitrogen retention in streams. Factors that affect the relative balance of autotrophic and heterotrophic metabolism indirectly control inorganic nitrogen uptake. The LINX study was funded by a grant (DEB-9628860) from the National Science Foundation. Work in Alaska was also funded by the National Science Foundation (OPP-9615949), and the East Fork Little Miami River study was supported by Procter & Gamble. Work at several streams was made possible by collaboration with the U.S. Forest Service and NSF funded LTER studies. Work at Walker Branch, ... Article in Journal/Newspaper Arctic Alaska Digital.CSIC (Spanish National Research Council) Arctic Freshwater Biology 48 8 1329 1352 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Biome Metabolism Nitrogen Stable isotope Transient storage |
spellingShingle |
Biome Metabolism Nitrogen Stable isotope Transient storage Webster, J. R. Mulholland, P. J. Tank, J. L. Valett, H. M. Dodds, W. K. Peterson, B. J. Bowden, W. B. Dahm, Clifford N. Findaly, S. Gregory, S. V. Grimm, N. B. Hamilton, S. K. Johnson, S. L. Martí, Eugènia McDowell, W. H. Meyer, J. L. Morrall, D. D. Thomas, S. A. Wollheim, W. M. Factors affecting ammonium uptake in streams - an Inter.-biome perspective |
topic_facet |
Biome Metabolism Nitrogen Stable isotope Transient storage |
description |
24 Páginas 10 Figuras 4 Tablas 1. The Lotic Intersite Nitrogen eXperiment (LINX) was a coordinated study of the relationships between North American biomes and factors governing ammonium uptake in streams. Our objective was to relate inter-biome variability of ammonium uptake to physical, chemical and biological processes. 2. Data were collected from 11 streams ranging from arctic to tropical and from desert to rainforest. Measurements at each site included physical, hydraulic and chemical characteristics, biological parameters, whole-stream metabolism and ammonium uptake. Ammonium uptake was measured by injection of 15N-ammonium and downstream measurements of 15N-ammonium concentration. 3. We found no general, statistically significant relationships that explained the variability in ammonium uptake among sites. However, this approach does not account for the multiple mechanisms of ammonium uptake in streams. When we estimated biological demand for inorganic nitrogen based on our measurements of in-stream metabolism, we found good correspondence between calculated nitrogen demand and measured assimilative nitrogen uptake. 4. Nitrogen uptake varied little among sites, reflecting metabolic compensation in streams in a variety of distinctly different biomes (autotrophic production is high where allochthonous inputs are relatively low and vice versa). 5. Both autotrophic and heterotrophic metabolism require nitrogen and these biotic processes dominate inorganic nitrogen retention in streams. Factors that affect the relative balance of autotrophic and heterotrophic metabolism indirectly control inorganic nitrogen uptake. The LINX study was funded by a grant (DEB-9628860) from the National Science Foundation. Work in Alaska was also funded by the National Science Foundation (OPP-9615949), and the East Fork Little Miami River study was supported by Procter & Gamble. Work at several streams was made possible by collaboration with the U.S. Forest Service and NSF funded LTER studies. Work at Walker Branch, ... |
format |
Article in Journal/Newspaper |
author |
Webster, J. R. Mulholland, P. J. Tank, J. L. Valett, H. M. Dodds, W. K. Peterson, B. J. Bowden, W. B. Dahm, Clifford N. Findaly, S. Gregory, S. V. Grimm, N. B. Hamilton, S. K. Johnson, S. L. Martí, Eugènia McDowell, W. H. Meyer, J. L. Morrall, D. D. Thomas, S. A. Wollheim, W. M. |
author_facet |
Webster, J. R. Mulholland, P. J. Tank, J. L. Valett, H. M. Dodds, W. K. Peterson, B. J. Bowden, W. B. Dahm, Clifford N. Findaly, S. Gregory, S. V. Grimm, N. B. Hamilton, S. K. Johnson, S. L. Martí, Eugènia McDowell, W. H. Meyer, J. L. Morrall, D. D. Thomas, S. A. Wollheim, W. M. |
author_sort |
Webster, J. R. |
title |
Factors affecting ammonium uptake in streams - an Inter.-biome perspective |
title_short |
Factors affecting ammonium uptake in streams - an Inter.-biome perspective |
title_full |
Factors affecting ammonium uptake in streams - an Inter.-biome perspective |
title_fullStr |
Factors affecting ammonium uptake in streams - an Inter.-biome perspective |
title_full_unstemmed |
Factors affecting ammonium uptake in streams - an Inter.-biome perspective |
title_sort |
factors affecting ammonium uptake in streams - an inter.-biome perspective |
publisher |
John Wiley & Sons |
publishDate |
2003 |
url |
http://hdl.handle.net/10261/37329 https://doi.org/10.1046/j.1365-2427.2003.01094.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_relation |
http://dx.doi.org/10.1046/j.1365-2427.2003.01094.x Freshwater Biology 48(8) 1329-1352 (2003) 0046-5070 http://hdl.handle.net/10261/37329 doi:10.1046/j.1365-2427.2003.01094.x |
op_rights |
none |
op_doi |
https://doi.org/10.1046/j.1365-2427.2003.01094.x |
container_title |
Freshwater Biology |
container_volume |
48 |
container_issue |
8 |
container_start_page |
1329 |
op_container_end_page |
1352 |
_version_ |
1790597347934208000 |