Pilocarpus microphyllus seedling growth threatened by climate change: an ecophysiological approach

Potential Distribution of Pilocarpus microphyllus in the Amazonia/Cerrado Biomes under Near-Future Climate Change Scenarios

“…This region is characterized by precipitation between 2000 and 2400 mm, while the average annual temperature varies from 23 • C and 26 • C [49], which offers to the specie the maturation of its fruits and flowers, and subsequently, good growth [50]. A recent study on P. microphyllus showed that the increase in temperature and decrease in precipitation projected in RCP scenarios may affect the jaborandi seedlings' growth [51]. Furthermore, these authors have emphasized the negative impact on growth in the height, diameter, and leaf area of the seedlings caused by water stress.…”

“…So, this region will not be impacted by a reduction in the plant, but sustainable management plans are recommended as they are within protected areas with primary forest cover. Amaral et al [51] demonstrated the impact of climate change on jaborandi seedlings' growth, thus directly affecting their future production. Our results corroborate these authors, but the most significant negative impacts should occur in the transition regions between the Amazon and Cerrado biomes along the state of Maranhão and primarily on the border with the state of Piaui already within the Caatinga biome, whose projections of spatial retraction and intense decreases in suitable habitats of the plant could really compromise the economy of many families in these two states of north and northeast Brazil.…”