ecespa (version 1.1-9)

Helianthemum: Spatial point pattern of Helianthemum squamatum adult plants and seedlings

Description

Locations of H. squamatum adult plants and seedlings in a 6 m x 7 m plot over gypsum soil in Chinch<U+000EEF7B>Chinchon 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.

Usage

data(Helianthemum)

Format

An object of class "ppp" of spatstat representing the point pattern of plants locations marked by their type. See ppp.object for details of the format.The dataset has 866 points with the following levels:

adultHS

adult H. squamatum plants

deadp

dying H. squamatum seedlings

survpl

surviving H. squamatum seedlings

References

De la Cruz, M. 2006. Introducci<U+000EE821>l an<e1>lisis de datos mapeados o algunas de las (muchas) cosas que puedo hacer si tengo coordenadas. Ecosistemas 15 (3): 19-39.

De la Cruz, M., Romao, R.L., Escudero, A. and Maestre, F.T. 2008. Where do seedlings go? A spatio-temporal analysis of early mortality in a semiarid specialist. Ecography,31 DOI: 10.1111/j.2008.0906-7590.05299 .

Escudero, A., Romao, R.L., De la Cruz, M. & Maestre, F. 2005. Spatial pattern and neighbour effects on Helianthemum squamatum seedlings in a Mediterranean gypsum community. J. Veg. Sci., 16: 383-390.

Examples

# NOT RUN {
data(Helianthemum)
plot(Helianthemum)
# }