Information
Ecological parameter: microhabitat/substrate preference (8 categories)
Parameter group: habitat related parameters
Explanation:
The parameter indicates the preference of a species for certain microhabitats, which are often characteristic for regions, stream types or the degree of degradation. Microhabitat preferences are directly related to flow velocity, hydrological and thermal regime as well as food availability. There are 8 microhabitat categories as used in the German assessment system "Perlodes" referring to Moog et al. (1999), Schmedtje & Colling (1996) and the AQEM Manual (AQEM consortium 2002).
Moog, O., Chovanec, A., Hinteregger, H. & Römer, A. (1999): Richtlinie für die saprobiologische Gewässergütebeurteilung von Fließgewässern. Wasserwirtschaftskataster, Bundesministerium für Land- und Forstwirtschaft, Wien: 144 pp.
Schmedtje, U. & Colling, M. (1996): Ökologische Typisierung der aquatischen Makrofauna. Informationsberichte des Bayerischen Landesamtes für Wasserwirtschaft 4/96, 543 pp.
AQEM consortium (2002): Manual for the application of the AQEM system. A comprehensive method to assess European streams using benthic macroinvertebrates, developed for the purpose of the Water Framework Directive. Version 1.0, February 2002.
Type of assignment: 10 point assignment system ()
A description of the coding system can be found here Abbreviations/Coding Systems
Abbreviations:
| Category name: | Abbreviations: | Explanation: |
|---|---|---|
| argyllal | arg | silt, loam, clay (grain size < 0.063 mm) |
| pelal | pel | mud (grain size < 0.063 mm) |
| psammal | psa | sand (grain size 0.063 - 2 mm) |
| akal | aka | fine to medium-sized gravel (grain size 0.2 - 2 cm) |
| lithal | lit | coarse gravel, stones, cobbles, boulders, bedrock (grain size > 2 cm) |
| phytal | phy | algae, mosses, macrophytes |
| pom | pom | coarse and fine particulate organic matter |
| other | oth | other substrates |
| Taxagroup | Number of assigned taxa / total number of taxa - percentage |
|---|---|
| Araneae | 1 / 7 - 14.2% |
| Bivalvia | 49 / 77 - 63.6% |
| Branchiobdellida | 1 / 8 - 12.5% |
| Bryozoa | 11 / 19 - 57.8% |
| Chironomidae | 98 / 1315 - 7.4% |
| Coelenterata | 5 / 13 - 38.4% |
| Coleoptera | 534 / 2678 - 19.9% |
| Crustacea | 71 / 270 - 26.2% |
| Diptera (excl. Chironomidae) | 96 / 2404 - 3.9% |
| Ephemeroptera | 133 / 353 - 37.6% |
| Gastropoda | 70 / 241 - 29% |
| Heteroptera | 78 / 124 - 62.9% |
| Hirudinea | 17 / 68 - 25% |
| Lepidoptera | 8 / 19 - 42.1% |
| Megaloptera | 2 / 6 - 33.3% |
| Nematomorpha | 1 / 1 - 100% |
| Odonata | 151 / 174 - 86.7% |
| Oligochaeta | 93 / 240 - 38.7% |
| Planipennia | 9 / 12 - 75% |
| Plecoptera | 75 / 576 - 13% |
| Polychaeta | 11 / 13 - 84.6% |
| Porifera | 6 / 12 - 50% |
| Trichoptera | 302 / 1439 - 20.9% |
| Turbellaria | 15 / 61 - 24.5% |