Menne
Hypotheses regarding ecology and biogeography of diatoms in temporary streams in each aquatic state.
The Lippe - Alme System
The Menne is a tributary of the Altenau, which is a tributary to the Alme, the Lippe tributary which flows into the Rhine.
The Menne was studied by Meyer et al. in 2003, looking into the effect of karstic drought on macroinvertebrates. The aim of our study is to characterize the diatom communities in ephemeral and inundated locations along this stream.
Characterization of the Menne from Meyer 2003 <ref>MEYER, A., E.I. MEYER & C. MEYER 2003. Lotic communities of two small temporary karstic stream systems (East Westphalia, Germany) along a longitudinal gradient of hydrological intermittency. Limnologica 33 (4): 271–279. </ref>
ELWAS Gewässer-Id: 2782852 (keine Info)
Catchment area = 7.5 km2
Length = 7 km (3 401.849 m)
Widths = 0.5 - 2 m
Permanent spring and springbrook = 150 m
Elevation = 195 - 245 m
Stream slope = 1.7 - 2.0 %
Substrate: limestone rocks, coarse gravel and cobbles
Debris: high before next flood event
Average data
| Variables | Meyer et al 2003 | Our study |
|---|---|---|
| Q (m/s) | / | 0.01 - 0.1 |
| Conductivity (µS/cm) | 500 - 630 | 350 - 601 |
| pH | 7 - 7.4 | 7.85 - 8.13 |
| Temp | / | 12 - 13.6 |
| Water hardness (ºdH) | 15.7 - 16.2 | / |
Tributary to Altenau
Sampling sites
| Sampling site | Lat | Long | Elevation [m] |
|---|---|---|---|
| M1 | 51.589308 N | 8.755923 E | 245 |
| M2 | 51.589975 N | 8.754721 E | 244 |
| M3 | 51.590694 N | 8.754786 E | 231 |
| M4 | 51.597248 N | 8.760392 E | 208 |
| M5 | 51.602579 N | 8.762742 E | 195 |
Perennial springbrook: M1, M3 Perennial spring: M2
Temporary stream section: M4, M5
Weitere Info
Erstes Sampling 22.05.2020 Zweites Sampling 09.09.2020