Abundance scales
As with species lists, an abundance scale lookup table eases data entry and helps to keep the data consistent. A default set of abundance scales comes with the install but custom scales can be imported from tabular text files that can be edited and exchanged between devices. A link in the action bar displays the active abundance scale and links to related functions in the menu.
"Natural" scales are:
- Presence
- * Counts
- * Frequency
- Percentage (%)
- Ordinale scale (1-9)
- Constancy classes according to Braun-Blanquet (1964)
Other scales with their authors are:
- Barkman, Doing & Segal according to Barkman, Doing & Segal, 1964)
- Braun/Blanquet (new) according to Reichelt & Wilmanns (1973)
- Braun/Blanquet (old) according to Braun-Blanquet (1964)
- *CEN according to EN (2003)
- *CEN Modified according to Matson (2006)
- *Colin
- *DAFOR according to CEN (2003)
- Daubenmire according to Daubenmire (1959)
- Dengler according to Dengler (2003)
- Doing according to Doing Kraft (1954)
- Domin according to Krajina (1933)
- Hill according to (Hill, 1979)
- Hult according to Van der Maarel (1979)
- Hurst & Allen (Recce scale) according to Hurst & Allen (2007)
- Londo according to Turboveg
- Londo according to Londo (1976)
- North-Carolina according to Peet, Wentworth & White (1998)
- * Pignatti according to Pignatti & Mengarda (1962)
- Pfadenhauer according to Pfadenhauer, Poschlod & Buchwald (1986)
We are grateful if you provide other scales regularly used in your area.
If you want to import your own scale you can download the original file, edit and re-load it (menu: Lookup > Cover scales > Load from disk). The table consists of a textfile with tabular data of the following format:
COVERSCALE_LU_VERSION; Default
ID;Entry;Percentage;Name
"""01""";"""r""";1;Braun-Blanquet (old)
"""01""";"""+""";2;Braun-Blanquet (old)
"""01""";"""1""";3;Braun-Blanquet (old)
"""01""";"""2""";13;Braun-Blanquet (old)
"""01""";"""3""";38;Braun-Blanquet (old)
"""01""";"""4""";68;Braun-Blanquet (old)
"""01""";"""5""";88;Braun-Blanquet (old)
The header line specifies a name for the list of scales (here: Default). The specification of the columns is as follows:
Specification of columns in the file coverscales.csv
| ID | Unique number of the abundance scale. The default list uses numbers (00 to 11) and scales from Turboveg to ease export and numbers 101 and following for additional scales |
| Entry | Abundance code |
| Percentage | A percentage used for miraculous "transformations" to metric scales. This is implemented to meet corresponding fields in export formats |
| Name | Name of the abundance scale |
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