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en:data:vltava_old

Forest vegetation data from Vltava river valley

Source of data

Zelený & Chytrý (2007)

Description of the dataset

Distribution of plots along transects across the valley.

Vegetation plots, located in even distances along transects following the steep valley slopes of Vltava river valley and collected during 2001-2003. Each transect started at the valley bottom and end up at the upper part of the valley slope. Plots are of the size 10×15 m. In each plot, all species of tree, shrub and herb layer were recorded and their abundance was estimated using 9-degree ordinal Braun-Blanquette scale (these values were consequently transformed into percentage). At each plot, various topographical and soil factors were measured or estimated (see Table below). The dataset contains 27 transects with 97 samples in total.

Locality

Vltava river valley close to Zlatá Koruna, Český Krumlov, Czech Republic. The transects follow the slopes of various aspect, and only the sites with natural or semi-natural forest vegetation were selected (no forest plantations).

The file with coordinates, which can be opened in Google Earth: vltava.kml 1)

Environmental variables

Name of variable Description
PLOTplot number
TRANSECTtransect number
ELEVATIONelevation [m a.s.l.]
SLOPEinclination [°]
ASPSWaspect (expressed as deviation of plot aspect from 45°; reaches the highest value for the supposedly warmest SW aspect)
ASPSSWaspect (expressed as deviation of plot aspect from 22.5°; reaches the highest value for the supposedly warmest SSW aspect)
XERSWindex of xericity = cos (aspect - 225°) x tg (slope) (highest values for SW slopes)
XERSSWindex of xericity = cos (aspect - 202,5°) x tg (slope) (highest values for SSW slopes)
SURFSLlandform shape in the downslope direction (three-degree ordinal scale: -1 concave, 0 flat, 1 convex)
SURFISlandform shape along an isohypse (three-degree ordinal scale: -1 concave, 0 flat, 1 convex)
LITHIClithic leptosols (shallow soils near rock outcrops)
SKELETICskeletic and hyperskeletic lepthosols (stony soils on scree accumulations)
CAMBISOLcambisols (well-developed zonal soils)
FLUVISOLfluvisols (water-influenced soils formed from alluvial deposits)
SOILDPTdepth of the soil [cm]
pH Hsoil pH (measured in water solution)
COVERE32estimated cover of tree and shrub layer [%]
ELL-LIGHTEllenberg indicator values for light
ELL-TEMPEREllenberg indicator values for temperature
ELL-CONTEllenberg indicator values for continentality
ELL-MOISTEllenberg indicator values for moisture
ELL-REACTEllenberg indicator values for soil reaction
ELL-NUTREllenberg indicator values for nutrients
SPEC-NOnumber of all species in the plot
GROUPvegetation type (result of numerical classification)

Data for download

  • vltava.xls - excel file, containing the species x sample matrix, environmental variables, explanation of species abbreviations and metadata
  • vltava-spe.txt - species × sample matrix (species in columns, samples in rows), txt format (cells separated by tabulator)
  • vltava-env.txt - environmental variable matrix (variables in columns, samples in rows), txt format (cells separated by tabulator)
  • vltava-spe.csv - species x sample matrix (species in columns, samples in rows), csv format (cells separated by semicolon)
  • vltava-env.csv - environmental variable matrix (variables in columns, samples in rows), csv format (cells separated by semicolon)
  • vltava.cep - species x sample matrix in CANOCO format (canoco condensed file)

Script for direct import of data to R

vltava.spe <- read.delim ('https://raw.githubusercontent.com/zdealveindy/anadat-r/master/data/vltava-spe.txt', row.names = 1)
vltava.env <- read.delim ('https://raw.githubusercontent.com/zdealveindy/anadat-r/master/data/vltava-env.txt')
 

References

  • Zelený D. & Chytrý M. (2007): Environmental control of vegetation pattern in deep river valleys of the Bohemian Massif. - Preslia, 79: 205-222 pdf
1)
you need Google Earth installed on your computer to open this file
en/data/vltava_old.txt · Last modified: 2018/04/09 15:55 (external edit)