. Author manuscript; available in PMC: 2019 Jan 1.

Published in final edited form as: Estuar Coast Shelf Sci. 2018;212:11–22. doi: 10.1016/j.ecss.2018.06.021

Table 2:

Summaries of flow-normalized trends in nitrogen forms for all stations and annual aggregations. Summaries are medians (mg L⁻¹) and percent change per year in parentheses (increasing in bold). Changes and significance estimates are based on seasonal Kendall tests of flow-normalized results within each time period.

Analyte/Station	Annual
	1976–1995	1996–2013
DIN
C10	1.3 (0.8)^*	1.4 (−3.1)^*
C3	0.3 (2.2)^*	0.5 (−0.1)^*
D19	0.4 (0.2)^*	0.4 (−1.9)^*
D26	0.4 (0.4)^*	0.5 (−1.2)^*
D28	0.4 (0.1)^*	0.4 (−3.1)^*
D4	0.3 (0.6)^*	0.4 (−0.3)^*
D6	0.4 (1.8)^*	0.5 (−0.3)^*
D7	0.4 (1.7)^*	0.5 (−0.7)^*
MD10	0.4 (−1.1)^*	0.3 (−2.4)^*
P8	1.3 (2.5)^*	1.7 (−2.0)^*

${NH}_{4}^{+}$
C10	0.1 (−3.4)^*	0.0 (−5.2)^*
C3	0.2 (3.7)^*	0.3 (0.0)
D19	0.0 (0.4)^*	0.0 (−1.7)^*
D26	0.1 (2.2)^*	0.1 (−1.5)^*
D28	0.0 (−1.1)^*	0.0 (−1.4)^*
D4	0.0 (0.9)^*	0.1 (0.0)
D6	0.1 (2.4)^*	0.1 (−0.5)^*
D7	0.1 (1.5)^*	0.1 (−1.2)^*
MD10	0.1 (−2.8)^*	0.0 (−1.1)^*
P8	0.2 (4.9)^*	0.1 (−10.3)^*

${NO}_{2}^{-} / {NO}_{3}^{2 -}$
C10	1.2 (1.4)^*	1.4 (−3.0)^*
C3	0.1 (−0.1)^*	0.2 (0.7)^*
D19	0.4 (−0.1)^*	0.4 (−1.9)^*
D26	0.3 (0.0)	0.4 (−1.1)^*
D28	0.4 (−0.2)^*	0.4 (−3.1)^*
D4	0.3 (0.7)^*	0.3 (−0.4)^*
D6	0.3 (1.3)^*	0.4 (−0.3)^*
D7	0.4 (0.7)^*	0.4 (−0.7)^*
MD10	0.4 (−1.0)^*	0.3 (−2.5)^*
P8	1.2 (1.7)^*	1.5 (−0.6)^*

p < 0.05