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Interactive comment on “ Organic nutrients and excess nitrogen in the North Atlantic subtropical gyre ” by A . Landolfi et al .
| Content Provider | Semantic Scholar |
|---|---|
| Author | Referee, Anonymous |
| Copyright Year | 2008 |
| Abstract | General Over the past decade, there has been a great deal of discussion surrounding estimates of nitrogen fixation based on accumulation of nitrate relative to phosphate, referred to as excess nitrate. Various proxies, N* and DINxs, and knowledge of the ventilation time scale of an isopycnal layer have been used to provides estimate of basin scale nitrogen fixation. Although previous studies have recognised the potential impact of atmospheric inputs and remineralisation of the large DON and DOP pools to create excess nitrogen signals, few studies have attempted to include these processes in their models. Landolfi et al. have used inorganic and organic nutrient data collected on one cruise in the North Atlantic (25.4N) and estimated rates of nitrogen fixation from two new proxies, TNxs and TONxs, which include the DON and DOP pools. I agree with the authors that inclusion of organic nutrients (or some fraction thereof) is required |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.biogeosciences-discuss.net/5/S304/2008/bgd-5-S304-2008-print.pdf |
| Alternate Webpage(s) | https://www.biogeosciences-discuss.net/5/S369/2008/bgd-5-S369-2008.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
