A mantel test was performed to ensure site independence due to the geographic distance RBMA; r = 0.55, p =0.01; RBC r = 0.57 p = 0.006.
Se llevó a cabo una "prueba de mantel" para asegurar la independencia por la distancia geográfica RBMA, r = 0.55, P = 0.01; RBC, r = 0.57 P = 0.006.