spatial distribution of two species and nest design

Hi Lutfor,

This seems to me as an instance of what has been called "independent 
labelling" (De la Cruz et al. 2008) or "trivariate random labelling" 
(Biganzoli et al. 2009, Xu et al. 2009).

You can find an old implementation of this approach in function K012 in 
the package ecespa (which depends on spatstat).

Best,

Marcelino



Biganzoli, F., T. Wiegand, and W. B. Batista. 2009. Firemediated
interactions between shrubs in a South American temperate savannah. 
Oikos 118:1383?1395.

De la Cruz, M., R. L. Romao, A. Escudero, and F. T. Maestre.
2008. Where do seedlings go? A spatio-temporal analysis of
seedling mortality in a semi-arid gypsophyte. Ecography 31:
1?11.

Xu, X., T. D. Harwood, M. Pautasso, and M. J. Jeger. 2009.
Spatio-temporal analysis of an invasive plant pathogen
(Phytophthora ramorum) in England and Wales. Ecography
32:504?516.



El 19/02/2014 10:06, Lutfor escribi?:

Dear Forum members, I was trying to find a thread to solve problem using
"spatstat" but it will not be possible without getting help from help. My
research question? Is species "A" occupancy is dependent on nest design only
or interaction of other species "B". I got a data set where about 200 nest
of 4 different designs were erected in a random pattern of a square block
about 3 km apart from each other. I would like to test whether species "A"
prefer a particular design and how it related to distribution of other
species "B". Will highly appreciated any suggestions. Best regards Lutfor



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