Prairie Basin Wetlands of the Dakotas:
A Community Profile
Tables
Table 4. Invertebrate taxa, maximum densities, and month(s) of observed maximum density in the water column of seasonal and semipermanent wetlands in the Cottonwood Lake study area, Stutsman County, North Dakota, in 1984 (from LaBaugh and Swanson 1988).
| Seasonal wetlands | Semipermanent wetlands | ||||
| T8 | T3 | P1 | P8 | P11 | |
| Basin chemical typea
Specific conductivity (mS/cm) Dominant emergents (central zone) |
KHCO3 90-144 Polygonum coccineum- Carex atherodes |
CaSO4 728-1350 Scolochloa festucacea- Carex atherodes |
MgSO4 1620-2960 Typha spp.- Scirpus acutus |
MgHCO3 797-1120 Typha spp.- Scirpus acutus |
NaSO4 3850-7580 Scirpus maritimus- Scirpus acutus |
| Copepoda | |||||
| Diacvalops bicuspidatus thomasi | 330b (6) | 188 (5) | 44 (5) | 11 (5) | 391 (5) |
| Diaptomus clavipes | 141 (8) | 5 (7) | |||
| D. sicilis | 359 (9) | ||||
| Copepod naupli | 1287 (6) | 703 (6) | 343 (6) | 115 (6) | 191 (5) |
| Canthocamptus sp. | 41 (5) | ||||
| Macrocyclops fuscus | 3 (9) | ||||
| Paracyclops fimbriatus poppei | 47 (5) | ||||
| Cyclopoid copepodids | 29 (5) | 65 (10) | |||
| Cladocera | |||||
| Daphnia pulex | 27 (5) | 192 (6) | 172 (5) | 4 (5) | |
| D. rosea | 17 (7) | ||||
| D. similis | 449 (6) | ||||
| Immature Daphnia | 4 (7) | 6 (6) | |||
| Simocephalus vetulus | 21 (6) | 6 (7) | Tr.c (6) | ||
| Ceriodaphnia quadranqula | 25 (7) | 23 (7) | 3 (6) | 23 (6) | |
| C. reticulata | 666 (6) | ||||
| Alona quttata | 154 (6) | ||||
| Pleuroxus procurvatus | Tr. (6) | ||||
| Scapholeberis quritus | 19 (7) | 37 (6) | 3 (7) | ||
| Chydorus sphaericus | 5 (6) | ||||
| C. sp. | 4 (6) | Tr. (6) | Tr. (5) | ||
| Moina macrocalps? | |||||
| Rotifera | |||||
| Keratella quadrata | l (9) | Tr. (9) | 155 (8) | ||
| K. serrulata | 81 (6) | 2 (6) | |||
| Polyarthra sp. | 111 (6) | 1 (6,7) | 15 (8) | ||
| Lecane sp. | 7 (5) | 13 (7) | Tr. (10) | ||
| Euchlanis sp. | 12 (5) | 5 (6) | Tr. (5) | 5 (5) | |
| Platyias sp. | 22 (7) | 18 (7) | 8 (8) | 5 (7) | |
| Monostyla sp. | 10 (7) | 8 (7) | |||
| Conochilus sp. | 3 (7) | 2 (5) | |||
| Accomorpha sp. | 8 (5) | ||||
| Asplanchna sp. | 1 (7) | ||||
| Brachionus sp. | Tr. (9) | ||||
| Trichocera sp. | 1 (5) | ||||
| Notholca accuminata | Tr. (7) | ||||
| N. sp. | 67 (5) | ||||
| Synchaeta sp. | 2056 (5) | 10 (8) | |||
| Amphipoda | |||||
| Hyalella azteca | Tr. (8) | 1 (7) | |||
| Eubranchiopoda | |||||
| Anostraca sp. | 3 (5) | 1 (5) | |||
| Ostracoda sp. | 8 (7) | 30 (5) | Tr. (6) | 2 (5) | 1 (5) |
| Hydracarina sp. | 3 (6) | 1 (7) | Tr. (7) | Tr. (7) | |
| Hemiptera | |||||
| Corixidae sp. | 4 (6) | ||||
| Notonectidae sp. | Tr. (8) | 11 (6) | |||
| Coleoptera | |||||
| Dytiscidae sp. | 4 (6) | Tr. (7,8,9) | Tr. (5) | ||
| Diptera | |||||
| Chironomidae sp. | 12 (5) | 1 (7) | Tr. (5,7,8) | ||
| Chaoborus sp. | 1 (7) | Tr. (8,9) | 1 (9) | ||
| Ephemeroptera | |||||
| Baetis sp. | Tr. (8) | Tr. (8) | |||
| Odonata | |||||
| Zygoptera sp. | Tr. (5) | ||||
aLaBaugh et al. 1987
bDensities are expressed as mean organisms/L (n= 3 samples/month) for the month of greatest abundance. Month of greatest abundance is in parentheses; more than one month is shown where monthly abundances were identical. Seasonal wetlands were sampled 3 times per visit each month from May through July: semipermanent wetlands were sampled 3 times per visit each month from May through October.
cTr.= <1 organism/L.
