Article Figures & Data
Figures
- Figure 1
(a) Lake Washington Tributary at Stein Road (LWSR) site (dot) and drainage (dotted outline), (b) Bee Lake Tributary No. 1 (BLT1) site and drainage, and (c) location of both study areas in relation to the state of Mississippi and the Gulf of Mexico (hatched area is the Yazoo River basin).
- Figure 2
Explanation of possible result combinations and interpretations from tests for difference and equivalence in median event concentrations between the early and late periods. Horizontal error bars are representative of 90% confidence intervals.
- Figure 3
Event concentration (C) and streamflow (Q) data for ammonia (NH3), nitrate plus nitrite (NO3 + NO2), suspended sediment (SS), total Kjeldahl nitrogen (TKN), total nitrogen (TN), and total phosphorus (TP) at (a through f) Bee Lake Tributary No. 1 (BLT1) and (g through l) Lake Washington Tributary at Stein Road (LWSR), with the C-Q relationship by best management practice period and indication if intercepts (*) or slopes (**) differed between periods.
- Figure 4
Comparison of statistical power for the (a, c, e) difference-in-intercept test and the (b, d, f) difference-in-median test for (a and b) suspended sediment (SS), (c and d) total nitrogen (TN), and (e and f) total phosphorus (TP) for each of the percentage change scenarios. Dotted line is at 0.80 power, a commonly used threshold for power (Krzywinski and Altman 2013).
- Figure 5
Comparison of statistical power for difference tests according to percentage change for (a, b, c) suspended sediment (SS), (d, e, f) total nitrogen (TN), and (g, h, i) total phosphorus (TP), grouped by number of sampled events ([a, d, g] 20 sampled events, [b, e, h] 50 sampled events, and [c, f, i] 100 sampled events). Dotted line is at 0.80 power, a commonly used threshold for power (Krzywinski and Altman 2013).
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