Moreover, it is necessary to know how tree species respond to the two main limitations in these areas: microsite availability (i.e., roadslope characteristics) and seed arrival, which is related to propagule source, dispersion vector and landscape characteristics.
However, it is unlikely that Pipistrellus nathusii is a dispersion vector of the lyssaviruses in Spain, as Brosset (6 ) suggests, since this is a very rare bat in the Iberian Peninsula.
Since M. schreibersii makes seasonal migrations (some of them >350 km) (16 ), this species could also be one of the dispersion vectors of the disease in southern Europe, where it abounds.
Increased dispersion of the vector, vector control difficulties, urban growth and increasing population mobility were important conditions determining vector and disease presence [ 87, 94, 96, 97].
The dispersion of vectors, parasites and viruses is irrepressible because of the movement of susceptible hosts from one place to another (Kazmi and Pandit [2001]).
An essential feature of the model is that mass and heat dispersion flux vectors are taken to be state variables additional to concentration and temperature; their values characterize the departures from local equilibrium.
The metamaterial behaviour has been verified from dispersion diagram and vector electric field plot.
Firstly, a linear model of the wideband radar target return with the steering vector dispersion is established.
The band structure of single-walled metallic carbon nanotubes exhibit linear energy-wave vector dispersion in the vicinity of the Fermi level.
Table 4 shows some estimators of the 3D BLC6 vector dispersion, calculated for three different sets, the 7300 vectors of 20 years, the 360 vectors of one year and, as a reference of completely dispersed set, a 7300 3D vector set of components +1, 0 or −1 generated at random.
Vector dispersion was followed by introduction of DENV-1, DENV-2, and DENV-3 in major Brazilian cities. Co-circulation of different serotypes has caused cases of the more severe forms of dengue, namely, dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS) (4 ).
