msk.morphol.1998.aggregate {ecoval}

Aggregation function of the highest node in the morphology module of the Swiss modular concept for stream assessment, level I (Regional survey) from 1998.

Description

Aggregates the values of the 2 sub-objectives at the highest aggregation level of the morphology module of the Swiss River Assessment Program MSK (1998). If the river is covered, the value for morphology is zero, otherwise it has the value of the uncovered node.

Usage

msk.morphol.1998.aggregate(u,
                           par = NA)

Arguments

u

Numerical vector of length 2 containing the values that quantify the degree of fulfillment of the 2 sub-objettives.

par

Argument added for consistency with the other aggregation procedures. No parameters are needed.

Value

The function returns the aggregated value.

References

Langhans, S.D., Lienert, J., Schuwirth, N. and Reichert, P. How to make river assessments comparable: A demonstration for hydromorphology, Ecological Indicators 32, 264-275, 2013. doi: 10.1016/j.ecolind.2013.03.027

Langhans, S.D., Reichert, P. and Schuwirth, N. The method matters: indicator aggregation in ecological river assessment. Ecological Indicators 45, 494-507, 2014. doi: 10.1016/j.ecolind.2014.05.014

Reichert, P., Schuwirth, N. and Langhans, S. Constructing, evaluating and visualizing value and utility functions for decision support, Environmental Modelling & Software 46, 283-291, 2013. doi: 10.1016/j.envsoft.2013.01.017

Reichert, P., Langhans, S., Lienert, J. and Schuwirth, N. The conceptual foundation of environmental decision support. Journal of Environmental Management. 154, 316-332, 2015. doi: 10.1016/j.jenvman.2015.01.053

Reichert, P., Borsuk, M., Hostmann, M., Schweizer, S., Sporri, C., Tockner, K. and Truffer, B. Concepts of decision support for river rehabilitation, Environmental Modelling and Software 22, 188-201, 2007. doi: 10.1016/j.envsoft.2005.07.017

https://modul-stufen-konzept.ch

Huette, M. and Niederhauser P. Methoden zur Untersuchung und Beurteilung der Fliessgewaesser in der Schweiz: Oekomorphologie Stufe F. Mitteilungen zum Gewaesserschutz Nr. 27. Bundesamt fuer Umwelt, Wald und Landschaft, BUWAL, Bern. 1998. https://www.bafu.admin.ch/bafu/de/home/themen/wasser/publikationen-studien/publikationen-wasser/methoden-fliessgewaesser-oekomorphologie-stufe-f.html

See Also

msk.morphol.1998.create, utility.

Examples

morphol <- msk.morphol.1998.create()
plot(morphol)
morphol.german <- msk.morphol.1998.create("Deutsch")
plot(morphol.german)