Effects of energy development on wetland plants and macroinvertebrate communities in Prairie Pothole Region wetlands

Figures & data

Table 1. Mean water-quality field parameters and mean hardstem bulrush (Schoenoplectus acutus) above-ground biomass and macrophyte tissue chloride concentrations for 10 wetlands in the Prairie Pothole Region.

Site	Water-quality sample date	Chloride concentration (mg/L)	Specific conductance (µS/cm)	Contamination Index	Above-ground biomass (g/m^2)	Tissue chloride concentration (%)
1	7/26/2012	7	1761	0.0040	682	0.99
2	7/25/2012	79	5257	0.0150	804	1.18
3	9/28/2012	137	8340	0.0164	760	1.01
4	7/15/2012	52	2499	0.0208	1397	0.57
5	6/28/2012	84	3921	0.0214	1508	1.85
6	7/13/2012	30	1307	0.0230	953	0.73
7	9/27/2012	489	8030	0.0609	1389	0.99
8	7/10/2012	573	3243	0.1767	1061	2.75
9	9/27/2012	4756	15,620	0.3045	268	2.66
10	9/27/2012	5475	16,830	0.3253	454	2.87

Figure 1. Panels A, B, and C show hard-stemmed bulrush above-ground biomass, macroinvertebrate richness, and plant tissue chloride concentrations plotted against Contamination Index values for 10 wetlands in the Prairie Pothole Region. Error bars in Panels A and B indicate the standard error.

Table 2. Contamination Index values and macroinvertebrate counts, by order, for 10 wetlands in the Prairie Pothole Region. The number in parentheses, if present, indicates the number of distinct taxa recorded within each order or wetland.

	Wetland
Order	1	2	3	4	5	6	7	8	9	10
Contamination Index	0.0040	0.0150	0.0164	0.0208	0.0214	0.0230	0.0609	0.1767	0.3045	0.3253
Amphipoda	45	22	8	–	–	55	18	10	–	9
Basommatophora	59 (4)	10 (2)	–	–	–	13 (3)	–	102 (3)	–	–
Coleoptera	1	3 (2)	1	–	2	–	–	4 (2)	2 (2)	–
Diplostraca	–	–	–	–	1	–	–	1	–	–
Diptera	46 (9)	161 (11)	209 (15)	–	209 (11)	56 (7)	157 (9)	76 (9)	162 (6)	210 (8)
Ephemeroptera	34 (2)	2	–	–	–	31 (2)	1	3	–	–
Haplotaxida	–	3	–	–	–	–	2	–	–	–
Hemiptera	–	9 (3)	–	–	1	2 (2)	8 (2)	1	14 (4)	5
Maxillopoda^a	–	–	–	–	2	29	–	1	12	–
Odonata	23	3	1	–	2	35	1	7	1	8
Ostracoda^a	–	2	11	–	13	2	33	5	33	–
Rhynchobdellida	–	–	–	–	–	2	–	–	–	–
Trichoptera	–	–	–	–	–	1	–	–	–	1
Trombidiformes	–	5 (3)	–	–	–	4	2	–	–	–
Total	208 (18)	220 (26)	230 (19)	No Sample	230 (17)	230 (21)	222 (17)	210 (21)	224 (15)	233 (12)

Note: ^aTaxonomic level only recorded to class.