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231223s2003 xx ||||| 00| ||eng c |
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|a pubmed25n0478.xml
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|a (DE-627)NLM14338855X
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|a (NLM)14621166
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Tanner, C C
|e verfasserin
|4 aut
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|a Using constructed wetlands to treat subsurface drainage from intensively grazed dairy pastures in New Zealand
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|c 2003
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 24.02.2004
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a Performance data, during the start-up period, are presented for constructed wetlands treating subsurface drainage from dairy pastures in Waikato (rain-fed) and Northland (irrigated), North Island, New Zealand. The wetlands comprised an estimated 1 and 2% of the drained catchment areas, respectively. Nitrate concentrations were high in the drainage inflows at both sites (medians 10 g m(-3) at Waikato and 6.5 g m(-3) at Northland), but organic N was also an important form of N at Waikato (37% of TN). Comparison of wetland inflow and outflow nutrient concentrations showed overall nutrient reductions during passage through the wetlands for NO3-N (34 and 94% for medians, respectively), TN (56 and 33%, respectively), and DRP (80%, Northland only). Median NH4-N (both sites) and DRP (Waikato) concentrations showed apparent increases between the wetland inlets and outlets. However, a mass balance calculated for the 3 month preliminary monitoring periods showed substantial mass removal of DRP (80%) and all measured forms of N (NO3-N 78%, NH4-N 41%, Org-N 99.8% and TN 96%) in the Waikato wetland. Monitoring of these systems needs to be continued through a range of seasons and years to fully assess their long-term performance
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Nguyen, M Long
|e verfasserin
|4 aut
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1 |
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|a Sukias, J P S
|e verfasserin
|4 aut
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| 773 |
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8 |
|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 48(2003), 5 vom: 01., Seite 207-13
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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| 773 |
1 |
8 |
|g volume:48
|g year:2003
|g number:5
|g day:01
|g pages:207-13
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|a AR
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|d 48
|j 2003
|e 5
|b 01
|h 207-13
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