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en:data:vltava_old [2018/04/09 15:55] (current)
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 +====== Forest vegetation data from Vltava river valley ======
 +
 +===== Source of data =====
 +Zelený & Chytrý (2007)
 +
 +===== Description of the dataset =====
 +[{{ :​obrazky:​transekty_na_vltave_-_schema.jpg?​400|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 10x15 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: {{:​data:​vltava.kml|vltava.kml}} ((you need Google Earth installed on your computer to open this file))
 +
 +===== Environmental variables =====
 +
 +^Name of variable ^Description^
 +|PLOT|plot number |
 +|TRANSECT|transect number |
 +|ELEVATION|elevation [m a.s.l.] |
 +|SLOPE|inclination [°]|
 +|ASPSW|aspect (expressed as deviation of plot aspect from 45°; reaches the highest value for the supposedly warmest SW aspect)|
 +|ASPSSW|aspect (expressed as deviation of plot aspect from 22.5°; reaches the highest value for the supposedly warmest SSW aspect)|
 +|XERSW|index of xericity = cos (aspect - 225°) x tg (slope) ​ (highest values for SW slopes)|
 +|XERSSW|index of xericity = cos (aspect - 202,5°) x tg (slope) ​ (highest values for SSW slopes)|
 +|SURFSL|landform shape in the downslope direction (three-degree ordinal scale: -1 concave, 0 flat, 1 convex)|
 +|SURFIS|landform shape along an isohypse (three-degree ordinal scale: -1 concave, 0 flat, 1 convex)|
 +|LITHIC|lithic leptosols (shallow soils near rock outcrops)|
 +|SKELETIC|skeletic and hyperskeletic lepthosols (stony soils on scree accumulations)|
 +|CAMBISOL|cambisols (well-developed zonal soils)|
 +|FLUVISOL|fluvisols (water-influenced soils formed from alluvial deposits)|
 +|SOILDPT|depth of the soil [cm]|
 +|pH H|soil pH (measured in water solution)|
 +|COVERE32|estimated cover of tree and shrub layer [%]|
 +|ELL-LIGHT|Ellenberg indicator values for light|
 +|ELL-TEMPER|Ellenberg indicator values for temperature|
 +|ELL-CONT|Ellenberg indicator values for continentality|
 +|ELL-MOIST|Ellenberg indicator values for moisture|
 +|ELL-REACT|Ellenberg indicator values for soil reaction|
 +|ELL-NUTR|Ellenberg indicator values for nutrients|
 +|SPEC-NO|number of all species in the plot|
 +|GROUP|vegetation type (result of numerical classification)|
 +
 +
 +===== Data for download =====
 +
 +  *{{https://​raw.githubusercontent.com/​zdealveindy/​anadat-r/​master/​data/​vltava.xls|vltava.xls}} - excel file, containing the species x sample matrix, environmental variables, explanation of species abbreviations and metadata
 +
 +  *{{https://​raw.githubusercontent.com/​zdealveindy/​anadat-r/​master/​data/​vltava-spe.txt|vltava-spe.txt}} - species × sample matrix (species in columns, samples in rows), txt format (cells separated by tabulator)
 +  *{{https://​raw.githubusercontent.com/​zdealveindy/​anadat-r/​master/​data/​vltava-env.txt|vltava-env.txt}} - environmental variable matrix (variables in columns, samples in rows), txt format (cells separated by tabulator)
 +
 +  *{{https://​raw.githubusercontent.com/​zdealveindy/​anadat-r/​master/​data/​vltava-spe.csv|vltava-spe.csv}} - species x sample matrix (species in columns, samples in rows), csv format (cells separated by semicolon)
 +  *{{https://​raw.githubusercontent.com/​zdealveindy/​anadat-r/​master/​data/​vltava-env.csv|vltava-env.csv}} - environmental variable matrix (variables in columns, samples in rows), csv format (cells separated by semicolon)
 +
 +  *{{https://​raw.githubusercontent.com/​zdealveindy/​anadat-r/​master/​data/​vltava.cep|}} - species x sample matrix in CANOCO format (//canoco condensed file//)
 +===== Script for direct import of data to R =====
 +<code 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'​)
 + 
 +</​code>​
 +
 +===== References =====
 +   ​*Zelený D. & Chytrý M. (2007): Environmental control of vegetation pattern in deep river valleys of the Bohemian Massif. - //​Preslia//,​ 79: 205-222 [[http://​www.ibot.cas.cz/​preslia/​P073Zel.pdf|pdf]]
  
en/data/vltava_old.txt · Last modified: 2018/04/09 15:55 (external edit)