swamp
(Package: ecespa) :
Tree Species in a Swamp Forest
Locations and botanical classification of trees in a plot in the Savannah River. Locations are given in metres, rounded to the nearest 0.1 metre. The data come from a 1-ha (200 m x 50 m) plot in the Savannah River Site, South Carolina, USA. The 734 mapped stems included 156 Carolina ash (Fraxinus caroliniana), 215 Water tupelo (Nyssa aquatica), 205 Swamp tupelo (Nyssa sylvatica), 98 Bald cypress (Taxodium distichum) and 60 stems of 8 additional species. Although the plots were set up by Bill Good and their spatial patterns described in Good and Whipple(1982), the plots have been maintained and resampled by Rebecca Sharitz and her colleagues of the Savannah River Ecology Laboratory. There are slightly different versions of the Good plot data. Every time the plots are resampled, some errors are corrected. This is mostly a concern for the biologists. The different versions are very similar; they are all very good examples of a marked spatial point pattern.
Locations of alive and dead oak trees (Quercus robur) in a secondary wood in Urkiola Natural Park (Basque country, north of Spain). This is part of a more extensive dataset collected and analysed by Laskurain (2008). The coordinates of the trees are given in meters.
seedlings
(Package: ecespa) :
Cohorts of Helianthemum squamatum seedlings
Marked point patterns of two consecutive cohorts of seedlings of H. squamatum growing in a gypsophylous plant community in Central Spain. The datasets contains the locations of the seedlings marked with their heigth. Both the coordinates and the heigth of the seedlings are given in cm.
Helianthemum
(Package: ecespa) :
Spatial point pattern of Helianthemum squamatum adult plants and seedlings
Locations of H. squamatum adult plants and seedlings in a 6 m x 7 m plot over gypsum soil in Chinchón (near Madrid, Spain). These are part of the data collected by Romao (2003) that have been analyzed several times (Escudero et al.2005, De la Cruz 2006, De la Cruz et al. in press. ). The coordinates of the plans are given in cm.
gypsophylous
(Package: ecespa) :
Spatial point pattern of a plant community
Locations of plants in a gypsophylous plant community in Central Spain. These are part of the data collected by Romao (2003) that have been analyzed several times (Escudero et al. 2005, De la Cruz 2006). The coordinates of the plans are given in cm.
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