41
Dissolved Organic Matter in Natural Waters
Study sites
Country/
Length/
DOC
Reference
latitudes
watershed area a
Surface (Depth) c
Deeper (Depth) b
km or (km 2
) a
(μM C)
Groundwater (Shallow and deep wells; groundwater spring), Norton-in-Hales
UK
(38)
467
± 375–
2708
± 1558
–
Bradley et al. (2007)
Groundwater, Suwannee River basin
USA
–
8–2333
–
Crandall et al. (1999),
Schwede-Thomas et al.
(2005)
Shallow groundwater (1.6 m), New Jersey Pine
Barrens
USA
–
1558–2583
–
Meier et al. (2004)
Groundwater, various types of aquifers
USA
–
42–8333
–
Thurman (1985a)
Groundwater, Cape Cod, USA
USA
–
<167
Pabich et al. (2001)
Groundwater, Amazon Basin
Brazil
–
100–3000
–
Richey et al. (2002)
Groundwater, Okavango Delta
Botswana
–
1108
± 217–
14167
± 6333
–
Mladenov et al. (2007)
Soil water (upper soil horizons)
North America;
Europe
–
1667–7500
–
Michalzik et al. (2001)
Soil water (lower soil horizons)
North America;
Europe
–
167–2917
–
Michalzik et al. (2001)
Rainwater
Rainwater, upstream regions of Yellow River
(n
= 2)
China
–
93–1784
–
Mostofa KMG et al.,
(unpublished data)
Rainwater (n
= 483), Northern China
China
–
25–3675
–
Pan et al. (2010)
Rainwater (n
= 13), Guangzhou city
China
–
78–694
–
Xu et al. (2008)
Rainwater, Brazilian savanna
Brazil
–
217
–
Ciglasch et al. (2004)
Rainwater (summer), Westwood, Los Angeles
USA
–
<1908
–
Sakugawa et al. (1993)
Rainwater (winter), Westwood, Los Angeles
USA
–
17–758
–
Sakugawa et al. (1993)
Rainwater (n
= 120), University of North Carolina,
Wilmington campus
USA
–
4–379
–
Kieber et al. (2006)
(continued)
Table 2 (continued)