Carbon and Nitrogen Cycling in a Shallow Productive Sub-Tropical Coastal Embayment (Western Moreton Bay, Australia): The Importance of Pelagic–Benthic Coupling
Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to...
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| Autor*in: |
Ferguson, Angus J. P. [verfasserIn] Eyre, Bradley D. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2010 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Ecosystems - Springer-Verlag, 2000, 13(2010), 7 vom: 14. Sept., Seite 1127-1144 |
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| Übergeordnetes Werk: |
volume:13 ; year:2010 ; number:7 ; day:14 ; month:09 ; pages:1127-1144 |
| Links: |
|---|
| DOI / URN: |
10.1007/s10021-010-9378-6 |
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SPR008079099 |
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| 520 | |a Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. | ||
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10.1007/s10021-010-9378-6 doi (DE-627)SPR008079099 (SPR)s10021-010-9378-6-e DE-627 ger DE-627 rakwb eng Ferguson, Angus J. P. verfasserin aut Carbon and Nitrogen Cycling in a Shallow Productive Sub-Tropical Coastal Embayment (Western Moreton Bay, Australia): The Importance of Pelagic–Benthic Coupling 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. sub-tropical (dpeaa)DE-He213 benthic metabolism (dpeaa)DE-He213 benthic microalgae (dpeaa)DE-He213 pelagic–benthic coupling (dpeaa)DE-He213 macrofauna (dpeaa)DE-He213 carbon cycling (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 Moreton Bay (dpeaa)DE-He213 Eyre, Bradley D. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 13(2010), 7 vom: 14. Sept., Seite 1127-1144 (DE-627)SPR008072272 nnns volume:13 year:2010 number:7 day:14 month:09 pages:1127-1144 https://dx.doi.org/10.1007/s10021-010-9378-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 13 2010 7 14 09 1127-1144 |
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10.1007/s10021-010-9378-6 doi (DE-627)SPR008079099 (SPR)s10021-010-9378-6-e DE-627 ger DE-627 rakwb eng Ferguson, Angus J. P. verfasserin aut Carbon and Nitrogen Cycling in a Shallow Productive Sub-Tropical Coastal Embayment (Western Moreton Bay, Australia): The Importance of Pelagic–Benthic Coupling 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. sub-tropical (dpeaa)DE-He213 benthic metabolism (dpeaa)DE-He213 benthic microalgae (dpeaa)DE-He213 pelagic–benthic coupling (dpeaa)DE-He213 macrofauna (dpeaa)DE-He213 carbon cycling (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 Moreton Bay (dpeaa)DE-He213 Eyre, Bradley D. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 13(2010), 7 vom: 14. Sept., Seite 1127-1144 (DE-627)SPR008072272 nnns volume:13 year:2010 number:7 day:14 month:09 pages:1127-1144 https://dx.doi.org/10.1007/s10021-010-9378-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 13 2010 7 14 09 1127-1144 |
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10.1007/s10021-010-9378-6 doi (DE-627)SPR008079099 (SPR)s10021-010-9378-6-e DE-627 ger DE-627 rakwb eng Ferguson, Angus J. P. verfasserin aut Carbon and Nitrogen Cycling in a Shallow Productive Sub-Tropical Coastal Embayment (Western Moreton Bay, Australia): The Importance of Pelagic–Benthic Coupling 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. sub-tropical (dpeaa)DE-He213 benthic metabolism (dpeaa)DE-He213 benthic microalgae (dpeaa)DE-He213 pelagic–benthic coupling (dpeaa)DE-He213 macrofauna (dpeaa)DE-He213 carbon cycling (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 Moreton Bay (dpeaa)DE-He213 Eyre, Bradley D. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 13(2010), 7 vom: 14. Sept., Seite 1127-1144 (DE-627)SPR008072272 nnns volume:13 year:2010 number:7 day:14 month:09 pages:1127-1144 https://dx.doi.org/10.1007/s10021-010-9378-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 13 2010 7 14 09 1127-1144 |
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10.1007/s10021-010-9378-6 doi (DE-627)SPR008079099 (SPR)s10021-010-9378-6-e DE-627 ger DE-627 rakwb eng Ferguson, Angus J. P. verfasserin aut Carbon and Nitrogen Cycling in a Shallow Productive Sub-Tropical Coastal Embayment (Western Moreton Bay, Australia): The Importance of Pelagic–Benthic Coupling 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. sub-tropical (dpeaa)DE-He213 benthic metabolism (dpeaa)DE-He213 benthic microalgae (dpeaa)DE-He213 pelagic–benthic coupling (dpeaa)DE-He213 macrofauna (dpeaa)DE-He213 carbon cycling (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 Moreton Bay (dpeaa)DE-He213 Eyre, Bradley D. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 13(2010), 7 vom: 14. Sept., Seite 1127-1144 (DE-627)SPR008072272 nnns volume:13 year:2010 number:7 day:14 month:09 pages:1127-1144 https://dx.doi.org/10.1007/s10021-010-9378-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 13 2010 7 14 09 1127-1144 |
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10.1007/s10021-010-9378-6 doi (DE-627)SPR008079099 (SPR)s10021-010-9378-6-e DE-627 ger DE-627 rakwb eng Ferguson, Angus J. P. verfasserin aut Carbon and Nitrogen Cycling in a Shallow Productive Sub-Tropical Coastal Embayment (Western Moreton Bay, Australia): The Importance of Pelagic–Benthic Coupling 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. sub-tropical (dpeaa)DE-He213 benthic metabolism (dpeaa)DE-He213 benthic microalgae (dpeaa)DE-He213 pelagic–benthic coupling (dpeaa)DE-He213 macrofauna (dpeaa)DE-He213 carbon cycling (dpeaa)DE-He213 ecosystem (dpeaa)DE-He213 Moreton Bay (dpeaa)DE-He213 Eyre, Bradley D. verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 13(2010), 7 vom: 14. Sept., Seite 1127-1144 (DE-627)SPR008072272 nnns volume:13 year:2010 number:7 day:14 month:09 pages:1127-1144 https://dx.doi.org/10.1007/s10021-010-9378-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER AR 13 2010 7 14 09 1127-1144 |
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carbon and nitrogen cycling in a shallow productive sub-tropical coastal embayment (western moreton bay, australia): the importance of pelagic–benthic coupling |
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Carbon and Nitrogen Cycling in a Shallow Productive Sub-Tropical Coastal Embayment (Western Moreton Bay, Australia): The Importance of Pelagic–Benthic Coupling |
| abstract |
Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. |
| abstractGer |
Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. |
| abstract_unstemmed |
Abstract Climatic variables, water quality, benthic fluxes, sediment properties, and infauna were measured six times over an annual cycle in a shallow sub-tropical embayment to characterize carbon and nutrient cycling, and elucidate the role of pelagic–benthic coupling. Organic carbon (OC) inputs to the bay are dominated by phytoplankton (mean 74%), followed by catchment inputs (15%), and benthic microalgae (BMA; 9%). The importance of catchment inputs was highly variable and dependent on antecedent rainfall, with significant storage of allochthonous OC in sediments following high flow events and remineralization of this material supporting productivity during the subsequent period. Outputs were dominated by benthic mineralization (mean 59% of total inputs), followed by pelagic mineralization (16%), burial (1%), and assimilation in macrofaunal biomass (2%). The net ecosystem metabolism (NEM = production minus respiration) varied between −4 and 33% (mean 9%) of total primary production, whereas the productivity/respiration (p/r) ranged between 0.96 and 1.5 (mean 1.13). Up to 100% of the NEM is potentially removed via the demersal detritivore pathway. Dissolved inorganic nitrogen (DIN) inputs from the catchment contributed less than 1% of the total phytoplankton demand, implicating internal DIN recycling (pelagic 23% and benthic 19%) and potentially benthic dissolved organic nitrogen (DON) fluxes (27%) or N fixation (up to 47%) as important processes sustaining productivity. Although phytoplankton dominated OC inputs in this system, BMA exerted strong seasonal controls over benthic DIN fluxes, limiting pelagic productivity when mixing/photic depth approached 1.3. The results of this study suggest low DIN:TOC and net autotrophic NEM may be a significant feature of shallow sub-tropical systems where the mixing/photic depth is consistently less than 4. |
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