Vegetation according to IBGE (2012): a = Grassy-Woody Savanna; b = Upper Montane Vegetational Refuges; c = Savanna/Seasonal Forest; d = Agrarian Activities (originally Savanna, Steppic Savanna/Seasonal Forest or Savanna/Broadleaf Forest); e = Secondary Vegetation and Agrarian Activities (originally Seasonal Decidual, Semideciduous or Moist Broadleaf Forests); f =
Arboreous Savanna; g =
Arboreous Steppic Savanna; h = Seasonal Decidual Submontante Forest; i = Savanna/Broadleaf Forest; j = Mangroves; k = Moist Broadleaf Forest of Lowlands.
These tests demonstrated that the extracts from Annona glabra, Simarouba tulae, Tithonia diversifolia, Dendropanax
arboreous, Piper jacquemontanium, Annona montana, and Polygala hecatantha were active in both assays.
The behaviour of electromagnetic waves propagating through densely
arboreous environments [9] and through sparsely
arboreous areas has been studied in [10].
Due to the semi-arid climate with scarce and irregularly distributed rainfall, there occurs a deciduous shrubby and
arboreous thorny vegetation, named 'hyperxerophilous caatinga'.
* Group 1: Vegetation characterized by highly degraded, mostly open
arboreous vegetation in early successional stage, due to intensive exploitation or clear cutting, invasion of pioneer tree and shrub species; sometimes with sparse tree cover, presence of silvopastoral systems, canopy cover less than 50%.
Habit: HEB = herbaceous; ARB = arbustive; ARE = erect arbustive; ARS = scandent arbustive; ARA =
arboreous. Seasonal Patterns: PE = Evergreen plants; PAR = plants active in rainy seasons; PPK = poikilohydric plants.