msk.macrophytes.2017.calc.types: Function to calculate macrophyte river types for a given set...
In ecoval: Procedures for Ecological Assessment of Surface Waters

Description Usage Arguments Details Value References See Also

View source: R/msk.macrophytes.2017.calc.types.r

Function to calculate macrophyte river types for a given set of attributes.

msk.macrophytes.2017.calc.types(attrib,
                                sampsize     = 10000,
                                language     = "English",
                                dictionaries = NA)

`attrib`	Data frame with river attributes.
`sampsize`	(optional) sample size for Monte Carlo calculation of probabilities of macrophyte river types (default is 10000).
`language`	(optional) language to be used to denote nodes, attributes and attribute levels. Must be a column name of the data frame provided by the argument `dictionaries` or of the default dictionaries data frame of the package if no data frame is provided under `dictionaries`.
`dictionaries`	(optional) data frame of dictionaries with the languages provided by the column names and the original keywords provided as the row names. If `dictionaries` is NA, the default dictionary `ecoval.dictionaries.default` is loaded.

The function returns a list with the following entries:
typedef: a list containing the details of the definition of macrophyte river types.
Important entries:
thresholds: nominal thresholds of the attributes used to classify rivers into macrophyte river types.
thresholds.indices: table of different combinations of lower and upper thresholds.
types: table of macrophyte river types corresponding to the combinations listed under thresholds.indices (three different levels of resolution: according to the river types scheme, used for valuation, and types for different growth forms).
thresholds.unc: definition of probability distributions used to characterize the uncertainty in the thresholds.
observations.unc: definition of probability distributions used to characterize the uncertainty in attributes.
attrib.types: data frame of attributes needed to calculate macrophyte river types. types.comb.obs: table of the row indices of the combinations according to typedef$thresholds.indices that corresponds to the observed river site attributes.
types.scheme.obs: table of the macrophyte river types according to the river types scheme that corresponds to the observed river site attributes.
types.fields.obs: table of the row and column indices of the river types scheme that corresponds to the observed river site attributes.

types.comb.probs: table of probabilities of the row indices of the combinations according to typedef$thresholds.indices that correspond to the river sites.
types.scheme.probs: table of probabilities of river types according to river types scheme that correspond to the river sites.
types.val.probs: table of probabilities of river types used for valuation that correspond to the river sites.
types.grfo.probs: table of probabilities of river growth form types that correspond to the river sites.
types.fields.probs: table of probabilities of row and column indices of the river types scheme that correspond to the river sites.
types.val.obs: river types used for valuation.
types.scheme.maxprob: river types according to the river types scheme with maximum probability.
types.val.maxprob: river types used for valuation with maxiumum probability.
types.table: data frame of the most important results.

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

Kaenel, B., Michel, C., Reichert, P. Methoden zur Untersuchung und Beurteilung der Fliessgewaesser. Makrophyten - Stufe F (flaechendeckend) und Stufe S (systembezogen). Entwurf. Bundesamt fuer Umwelt, Bern. 119 S. 2017. https://modul-stufen-konzept.ch/