Nutrient Retention and the Problem of Hydrologic Disconnection in Streams and Wetlands
Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We exa...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Powers, Stephen M. [verfasserIn] Johnson, Robert A. [verfasserIn] Stanley, Emily H. [verfasserIn] |
|---|
| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2012 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Ecosystems - Springer-Verlag, 2000, 15(2012), 3 vom: 28. Feb., Seite 435-449 |
|---|---|
| Übergeordnetes Werk: |
volume:15 ; year:2012 ; number:3 ; day:28 ; month:02 ; pages:435-449 |
| Links: |
|---|
| DOI / URN: |
10.1007/s10021-012-9520-8 |
|---|
| Katalog-ID: |
SPR008080496 |
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| 520 | |a Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. | ||
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| 650 | 4 | |a wetland |7 (dpeaa)DE-He213 | |
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| 650 | 4 | |a nutrient |7 (dpeaa)DE-He213 | |
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10.1007/s10021-012-9520-8 doi (DE-627)SPR008080496 (SPR)s10021-012-9520-8-e DE-627 ger DE-627 rakwb eng Powers, Stephen M. verfasserin aut Nutrient Retention and the Problem of Hydrologic Disconnection in Streams and Wetlands 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. stream (dpeaa)DE-He213 wetland (dpeaa)DE-He213 river (dpeaa)DE-He213 nutrient (dpeaa)DE-He213 uptake (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 hydrologic connectivity (dpeaa)DE-He213 transient storage (dpeaa)DE-He213 nitrate (dpeaa)DE-He213 nitrogen (dpeaa)DE-He213 Johnson, Robert A. verfasserin aut Stanley, Emily H. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 15(2012), 3 vom: 28. Feb., Seite 435-449 (DE-627)SPR008072272 nnns volume:15 year:2012 number:3 day:28 month:02 pages:435-449 https://dx.doi.org/10.1007/s10021-012-9520-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 15 2012 3 28 02 435-449 |
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10.1007/s10021-012-9520-8 doi (DE-627)SPR008080496 (SPR)s10021-012-9520-8-e DE-627 ger DE-627 rakwb eng Powers, Stephen M. verfasserin aut Nutrient Retention and the Problem of Hydrologic Disconnection in Streams and Wetlands 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. stream (dpeaa)DE-He213 wetland (dpeaa)DE-He213 river (dpeaa)DE-He213 nutrient (dpeaa)DE-He213 uptake (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 hydrologic connectivity (dpeaa)DE-He213 transient storage (dpeaa)DE-He213 nitrate (dpeaa)DE-He213 nitrogen (dpeaa)DE-He213 Johnson, Robert A. verfasserin aut Stanley, Emily H. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 15(2012), 3 vom: 28. Feb., Seite 435-449 (DE-627)SPR008072272 nnns volume:15 year:2012 number:3 day:28 month:02 pages:435-449 https://dx.doi.org/10.1007/s10021-012-9520-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 15 2012 3 28 02 435-449 |
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10.1007/s10021-012-9520-8 doi (DE-627)SPR008080496 (SPR)s10021-012-9520-8-e DE-627 ger DE-627 rakwb eng Powers, Stephen M. verfasserin aut Nutrient Retention and the Problem of Hydrologic Disconnection in Streams and Wetlands 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. stream (dpeaa)DE-He213 wetland (dpeaa)DE-He213 river (dpeaa)DE-He213 nutrient (dpeaa)DE-He213 uptake (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 hydrologic connectivity (dpeaa)DE-He213 transient storage (dpeaa)DE-He213 nitrate (dpeaa)DE-He213 nitrogen (dpeaa)DE-He213 Johnson, Robert A. verfasserin aut Stanley, Emily H. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 15(2012), 3 vom: 28. Feb., Seite 435-449 (DE-627)SPR008072272 nnns volume:15 year:2012 number:3 day:28 month:02 pages:435-449 https://dx.doi.org/10.1007/s10021-012-9520-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 15 2012 3 28 02 435-449 |
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10.1007/s10021-012-9520-8 doi (DE-627)SPR008080496 (SPR)s10021-012-9520-8-e DE-627 ger DE-627 rakwb eng Powers, Stephen M. verfasserin aut Nutrient Retention and the Problem of Hydrologic Disconnection in Streams and Wetlands 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. stream (dpeaa)DE-He213 wetland (dpeaa)DE-He213 river (dpeaa)DE-He213 nutrient (dpeaa)DE-He213 uptake (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 hydrologic connectivity (dpeaa)DE-He213 transient storage (dpeaa)DE-He213 nitrate (dpeaa)DE-He213 nitrogen (dpeaa)DE-He213 Johnson, Robert A. verfasserin aut Stanley, Emily H. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 15(2012), 3 vom: 28. Feb., Seite 435-449 (DE-627)SPR008072272 nnns volume:15 year:2012 number:3 day:28 month:02 pages:435-449 https://dx.doi.org/10.1007/s10021-012-9520-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 15 2012 3 28 02 435-449 |
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10.1007/s10021-012-9520-8 doi (DE-627)SPR008080496 (SPR)s10021-012-9520-8-e DE-627 ger DE-627 rakwb eng Powers, Stephen M. verfasserin aut Nutrient Retention and the Problem of Hydrologic Disconnection in Streams and Wetlands 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. stream (dpeaa)DE-He213 wetland (dpeaa)DE-He213 river (dpeaa)DE-He213 nutrient (dpeaa)DE-He213 uptake (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 hydrologic connectivity (dpeaa)DE-He213 transient storage (dpeaa)DE-He213 nitrate (dpeaa)DE-He213 nitrogen (dpeaa)DE-He213 Johnson, Robert A. verfasserin aut Stanley, Emily H. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 15(2012), 3 vom: 28. Feb., Seite 435-449 (DE-627)SPR008072272 nnns volume:15 year:2012 number:3 day:28 month:02 pages:435-449 https://dx.doi.org/10.1007/s10021-012-9520-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 15 2012 3 28 02 435-449 |
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Nutrient Retention and the Problem of Hydrologic Disconnection in Streams and Wetlands |
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Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. |
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Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. |
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Abstract Some aquatic systems have disproportionately high nutrient processing rates, and may be important to nutrient retention within river networks. However, the contribution of such biogeochemical hot spots also depends on water residence time and hydrologic connections within the system. We examined the balance of these factors in a comparative study of nitrate ($ NO_{3} $−) uptake across stream and flow-through wetland reaches of northern Wisconsin, USA. The experimental design compared $ NO_{3} $− uptake at different levels: the ecosystem level, for reaches (n = 9) consisting of morphologically contrasting subreaches (SLOW, low mean water velocity; REF, reference, or higher mean water velocity); the sub-ecosystem level, for subreaches consisting of morphologically contrasting zones (TS, transient storage zone; MC, main channel zone). SLOW subreaches had 45% lower ecosystem-level uptake rate (K, $ t^{−1} $) on average, indicating reduced uptake efficiency in flow-through wetlands relative to streams. The four largest K values (total n = 24) also occurred in REF subreaches. TS:MC uptake rate varied (range 0.1–6.0), but MC zones consistently accounted for most $ NO_{3} $− uptake by the ecosystem. In turn, TS influence was limited by a tradeoff between TS zone uptake rate and the strength of TS–MC hydrologic connection (α or Fmed). Additional modeling of published hydrologic parameter sets showed that strong MC dominance of uptake (>75% of total uptake), at the scale of solute release methods (meters to kilometers, hours to days), is common among streams and rivers. Our results emphasize that aquatic nutrient retention is the outcome of a balance involving nutrient uptake efficiency, water residence time, and the strength of hydrologic connections between nutrient sources and sinks. This balance restricts the influence of hydrologically disconnected biota on nutrient transport, and could apply to diverse ecosystem types and sizes. |
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