A Comparison of the Structure and Composition of Montane and Lowland Tropical Forest in the Serranía Pilón Lajas, Beni, Bolivia Back to Main Page Table 2. The species diversity and importance values for the families of trees collected in two one hectare permanent plots established in the Serranía Pilón Lajas; the FIV or family importance value is the sum of the relative values for diversity, abundance and dominance (basal areas). Family Río Colorado Cumbre Pilón # Species FIV # Species FIV Anacardiaceae 1 4.72 1 3.46 Annonaceae 6 16.57 4 7.19 Apocynaceae - - 1 2.28 Araliaceae 2 3.54 1 9.27 Bombacaceae 1 1.79 1 0.88 Boraginaceae - - 1 0.87 Burseraceae 2 6.53 2 12.46 Caricaceae 1 2.10 - - Celastraceae - - 1 2.11 Chrysobalanaceae 1 5.38 2 2.19 Combretaceae - - 2 3.41 Elaeocarpaceae 1 4.32 2 4.95 Eupborbiaceae 2 25.74 7 17.70 Flacourtiaceae 2 5.12 3 11.87 Guttiferae - - 3 5.81 Hippocrataceae 1 2.33 - - Lauraceae 8 13.20 9 14.18 Lecythidaceae - - 1 0.90 Leguminosae 4 11.14 25 41.90 Mimosoideae (2) (7.14) (14) (21.06) Papilionoideae (2) (4.01) (11) (20.84) Malpighiaceae - - 2 1.91 Melastomataceae - - 3 2.78 Meliaceae 5 11.72 8 12.55 Moraceae 12 71.77 13 39.24 Myristicaceae 2 4.59 3 5.04 Myrtaceae 1 1.45 7 7.46 Myrsinaceae 1 1.67 1 1.27 Nyctaginaceae 2 5.63 3 5.58 Palmae 7 57.84 1 3.54 Polygonaceae 2 4.16 3 6.06 Rosaceae - - 1 0.98 Rubiaceae 1 1.55 14 18.49 Rutaceae 1 1.45 1 0.93 Sapindaceae 1 2.26 4 11.28 Sapotaceae - - 7 15.43 Solanaceae 1 1.93 - - Sterculiaceae 2 4.00 1 3.46 Tiliaceae 1 5.45 2 4.89 Ulmaceae 3 10.81 1 6.04 Urticaceae 1 2.41 1 4.92 Verbenaceae 1 2.16 2 2.14 Violaceae 1 1.66 2 2.16 indet 1 1.76 1 1.13 indet 1 1.50 1 0.87 indet 1 1.48 - - Total 146   78