“…Kellogg and Griffin (2006) identified the global transport of desert dust as the main mechanism responsible for the transport of aerosol microbiota -pollens, fungi, and bacteria (Figure 11.7). Modern aerobiological studies claim that pollen transported by Saharan dust from North Africa has reached Southwestern Spain (Cordóba) (Cariñanos et al, 2004). In fact, pollen from nonnative plants such as Cannabis, Cupressus, Pinus, Platanus, and Sambucus was detected exclusively on days when dust clouds were present.…”