144
Table 8.1 Global and basin scale estimates of oceanic N 2 fixation
References
Realm
Approach/notes
Tg N y
−1
Global pelagic
Soderlund and
Svensson (1976)
Pelagic
Scaled from DM
20–120
Capone and Carpenter
(1982)
Pelagic
Scaled from DM
15
Gruber and Sarmiento
(1997)
Pelagic
Integrated N*
117 ± 40
Brandes and Devol
(2002)
Global
Isotope budget
> > 100
Lee et al. (2002)
Global
CO 2 draw-down NO 3
−
depleted waters
121
Galloway et al. (2004) Global pelagic
Scaled from BS- DM
85 ± 141
Moore et al. (2004)
Global pelagic
Modelled
56
Gruber (2004)
Global pelagic
Modelled N*
120 ± 50
Deutsch et al. (2007)
Global pelagic
Modelled P*
137
Luo et al. (2012)
Atl & Pacific
GMAR
62
Luo et al. (2012)
Atl & Pacific
AMAR
137
Großkopf et al. (2012) Global pelagic
SWMAR- bubble
103
Großkopf et al. (2012) Global pelagic
New method, adjust
177 ± 8
Wang et al. (2019)
Global pelagic
Modelled (inverse)
126 ± 223
Wang et al. (2019)
Global pelagic
Modelled (prognostic)
238
Atlantic Basin
Gruber and Sarmiento
(1997)
N. Atlantic
Integrated N*
28 ± 15.4
Galloway et al. (2004) N & S Atl basins
Scaled from BS- DM,
waters >20 °C
17 ± 63
Capone et al. (2005)
Trichodesmium in
N. Atl
Areal extrapolation
22.4 ± 33.6
Capone et al. (2005)
N. Atl. Basin
Isotope budget
77 ± 121.8
Deutsch et al. (2007)
N & S Atl basins
19.6 ± 5.6
Moore et al. (2009)
N & S Atl basins
N* divergence 30°S to
36°N
15.4 ± 4.2
Moore et al. (2009)
N & S Atl basins
Deep water N* distribution 21 ± 5.6
Luo et al. (2012)
N & S Atl basins
GMAR
2.8
Luo et al. (2012)
N & S Atl basins
AMAR
33.8
Großkopf et al. (2012) N & S Atl basins
SWMAR
14
Marconi et al. (2017) N & S Atl basins
Isotope budget
30.5
Wang et al. (2019)
N & S Atl basins
Modelled (inverse)
36.2
Pacific Basin
Galloway et al. (2004) Pacific
Scaled from BS- DM,
waters >20 °C
48 ± 59
Luo et al. (2012)
N & S Pacific basins GMAR
59
Luo et al. (2012)
N & S Pacific basins AMAR
62.5
(continued)
8 N 2 Fixation in Ocean Basins