01974naa a2200253 a 450000100080000000500110000800800410001902200140006002400580007410000200013224501350015226000090028750001570029652009950045365000160144865300300146465300400149465300390153465300240157370000220159770000200161970000170163977300640165621172052022-03-15       2019    bl uuuu     u00u1 u    #d  a1983-21257 ahttp://dx.doi.org/10.1590/1983-21252019v32n416rc2DOI1 aSILVA, F. F. da  aCharacterization of rhizobia and arbuscular mycorrhizal fungi in areas impacted by gravel mining in Brazil.h[electronic resource]  c2019  aTítulo em Português: Caracterização de rizóbios e fungos micorrízicos arbusculares em áreas impactadas pela exploração de piçarra na Caatinga.  aOn-shore oil exploration is one of the main economic activities in the semiarid region (Caatinga biome) of the state of Rio Grande do Norte (RN), Brazil. Gravel mining is an activity associated with oil exploration that causes environmental impacts. Gravel is a base-material for constructions, such as roads and pumpjack bases. The areas of gravel mining and other decommissioned areas where the gravel has been deposited must be revegetated with species native to the biome at end of the activity in the site. An efficient strategy for revegetation of degraded areas has been the planting of leguminous species that can associate with rhizobia and arbuscular mycorrhizal fungi (AMF). Nevertheless, the impact of mining activities on the autochthonous populations of these microorganisms is unknown. The objective of the present work is to characterize the density of rhizobia and AMF spores in four areas impacted by the oil exploration in RN when compared to non-impacted adjacent areas.  aMineração  aExploração petrolífera  aFixação biológica de nitrogênio  aRecuperação de áreas degradadas  aSimbiose tripartite1 aSANTOS, T. A. dos1 aJESUS, E. da C.1 aCHAER, G. M.  tRevista Caatinga, Mossorógv. 32, n. 4, p. 995-1004, 2019.