Does wind affect the orientation of vegetation stripes? A copula-based mixture model for axial and circular data

Autor:	Mingione, Marco, Lagona, Francesco, Nagar, Priyanka, von Holtzhausen, Francois, Bekker, Andriette, Schoombie, Janine, Roux, Peter C. le
Rok vydání:	2024
Předmět:	Statistics - Applications
Druh dokumentu:	Working Paper
Popis:	Motivated by a case study of vegetation patterns, we introduce a mixture model with concomitant variables to examine the association between the orientation of vegetation stripes and wind direction. The proposal relies on a novel copula-based bivariate distribution for mixed axial and circular observations and provides a parsimonious and computationally tractable approach to examine the dependence of two environmental variables observed in a complex manifold. The findings suggest that dominant winds shape the orientation of vegetation stripes through a mechanism of neighbouring plants providing wind shelter to downwind individuals.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2411.11461 Zobrazit plný text záznamu View this record from Arxiv