  Network theoretic approach has been used to model and study the flow of
ecological information, growth and connectivity on landscape level of
anemochory plant species Abied pindrow, Betula utilis and Taxus wallichiana in
the Western Himalaya region. A network is formally defined and derived for seed
dispersion model of aforementioned species where vertices represent habitat
patches which are connected by an edge if the distance between the patches is
less than a threshold distance. We define centrality of a network and
computationally identify the habitat patches that are central to the process of
seed dispersion to occur across the network. We find that the network of
habitat patches is a scale free network and at the same time it also displays
small world property characterized by high clustering and low average shortest
path length. Due to high clustering, the spread of species is locally even as
seed disperse mutually among the member vertices of a cluster. Also since every
vertex is only a short number of steps away from every other vertex, the
species rapidly covers all the habitat patches in the component. Also due to
presence of hubs in the network the spread of species is greatly boosted
whenever the species establish and thrive in a hub patch and disperse to
adjacent patches. However, the network is not modular due to geographical
constraints, and is is negatively assortative as the high degree vertices are
connected to vertices of low degree.
