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Cache County, Utah, UTWET An Inventory of Aquatic Invertebrate Assemblages in Wetlands in Utah By: Mark Vinson Brooke Bushman National Aquatic Monitoring Center Department of Aquatic, Watershed & Earth Resources Utah State University, Logan, Utah 84322-5210 www.usu.edu/buglab Table of contents Page Introduction ..................................................................................................................... 1 Study and reporting description ...................................................................................... 2 Study area ...................................................................................................................... 2 Methods .......................................................................................................................... 3 Locations and physical habitat ............................................................................... 3 Photo points ...........................................................................................................3 Aquatic invertebrates.............................................................................................. 4 Field methods................................................................................................ 4 Laboratory methods ...................................................................................... 5 Site classification ................................................................................................... 6 Data summarization ............................................................................................. 11 Results and discussion.................................................................................................. 13 Temporal variation............................................................................................... 13 Classification schemes........................................................................................ 13 Reference class.......................................................................................... 13 Ecoregion classification.............................................................................. 14 Water regime.............................................................................................. 14 Wetland class ............................................................................................. 14 Salinity classes........................................................................................... 14 Wetland subclass ....................................................................................... 14 Relationship with environmental variables ......................................................... 15 Taxa occurrences .............................................................................................. 15 Discussion..................................................................................................................... 40 Future work ........................................................................................................ 41 Literature cited .............................................................................................................. 42 Tables Table 1. Mean between-group (B¯) and within-group (W¯ ) faunal similarities ................. 17 Table 2. ANOVA results for analysis of wetland classification schemes ...................... 19 Table 3. Aquatic invertebrate family occurrences in reference and non-reference wetlands .............................................................................................................21 Table 4. Aquatic invertebrate genera occurrences by reference condition.................. 23 Table 5. Aquatic invertebrate family occurrences by wetland subclass for all wetland sampled ................................................................................................ 26 Table 6. Aquatic invertebrate family occurrences at references sites by wetland subclass................................................................................................ 29 Table 7. Aquatic invertebrate genera occurrences by wetland subclass..................... 32 Table 8. Aquatic invertebrate genera occurrences at reference sites by wetland subclass .............................................................................................................36 i Figures Figure 1. Mean (+ SE) aquatic invertebrate taxa richness by wetland subclass............ 18 Figure 2. Relationship between wetland vegetation taxa richness and aquatic invertebrate taxa richness. ................................................................................. 20 Figure 3. Apparent threshold relationship between wetland water electrical conductance and aquatic invertebrate taxa richness.......................................... 20 Appendices Appendix 1. Sampling site descriptions and aquatic invertebrate collection data......... 43 a. List of taxa found in 209 samples collected during the study period.............. 44 b. List of taxa found in reference and non-reference sites................................. 52 Appendix 2. Data for individual sampling sites ............................................................. 57 Sampling locations, names in parenthesis are Dr. Nancy Keate’s site names Third Dam Ponds, UTWET-09 (thirddam) .................................................................. 58 Salt Wells Meadow, UTWET-11 (swmonu2, swmonu3) ............................................. 62 Lower Gibson Lake, UTWET-18 (gibsonlw) ................................................................ 64 Upper Gibson Lake, UTWET-19 (gibsonup)................................................................ 66 SLC Airport 2, UTWET-20 (airprt22, airprt23, airprt24) ............................................... 68 Lower West Pond, UTWET-23 (lwest2, lwest3) .......................................................... 70 Blue Lake Upper Playa, UTWET-34 (blplay3, blplay4) ............................................... 71 Blue Lake Upper Springs- UTWET-35 (bluespgu, bluespgu2) .................................. 73 Blue Lake Upper Pond, UTWET-36 (bluepd1, bluepd2, bluepd3) .............................. 75 Horseshoe Spring- UTWET-38 (horsesh1, horsesh2) ................................................ 77 Dry Lake- south, UTWET-39 (drylake, drylake2) ........................................................ 79 Dry Lake- north, UTWET-40 (drylake) ........................................................................ 82 TNC Lake Pond, UTWET-41 (tncpond) ....................................................................... 84 2600 N Lane Playa, UTWET-42 (nolanepl, nolanepl2) ................................................ 86 Soldier Hollow Upper, UTWET-43 ............................................................................ 91 Bear River Bottoms, UTWET-44 (bearrvb1, bearrvb2) .............................................. 94 Soldier Hollow Lower, UTWET-45 (shponds, shponds2) ........................................... 99 Layton Marsh site 2, UTWET-46 .............................................................................. 102 Playa South Hull Lake (P.S.G.), UTWET-47 (sohull, sohull2) .................................. 104 Duck Lake Playa (P.S.G.), UTWET-48 (duckply, duckply2) ...................................... 107 Cement 1 Pond, UTWET-49 (cement) ...................................................................... 110 Limestone Playa, UTWET-50 (limest1, limest2) ....................................................... 111 Plover Playa, UTWET-51 (plover, plover2) ............................................................... 113 Bulrush Pond, UTWET-52 (bullrbl) ........................................................................... 115 SLC Airport 3, UTWET-53 (airprt33, airprt34) ........................................................... 117 Sims Pothole 1, UTWET-54 (sims1) ......................................................................... 119 East Marsh Lake, UTWET-55 (marsh3) .................................................................... 121 Cook Pothole Lower, UTWET-56 (coookhplw) ........................................................ 123 Aquarius Pothole, UTWET-57 (aquarius) ................................................................. 125 North Playa, UTWET-58 (northpd) ............................................................................ 127 Dry Lake mud sample, UTWET-59 ........................................................................... 129 ii South Pond, UTWET-60 (southpd1) ......................................................................... 130 Benson Bridge south marsh, UTWET-64 ................................................................ 132 Salt Wells Playa, UTWET-69 (swplaya3) .................................................................. 134 TNC Playa (managed), UTWET-70 (mtncply) ........................................................... 135 Goshen Playa, UTWET-71 (goshenp3) ..................................................................... 137 Goshen Salt Meadow, UTWET-72 (goshens4) ........................................................ 138 Davis Creek Ponds (S and N), UTWET-73 (davispnd, davispnd2) .......................... 140 Second Impoundment W and Davis Creek Second, UTWET- 74 (2ifbwma, 2ifmwma2) ....................................................................................................... 143 State Canal, UTWET-75............................................................................................
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