02335naa a2200277 a 450000100080000000500110000800800410001902200140006002400310007410000180010524501520012326000090027552014540028465300350173865300210177365300240179470000180181870000160183670000200185270000200187270000200189270000220191270000160193470000240195077300830197421521542023-11-29       2023    bl uuuu     u00u1 u    #d  a2766-61907 a10.21926/aeer.23010222DOI1 aGARCIA, L. G.  aHydrological effects of spatial harvest patterns in a small catchment Covered by fast-growing plantations in the neotropics.h[electronic resource]  c2023  aABSTRACT: Eucalyptus forests are expanding worldwide and concerns exist about their impact on water resources. There is a lack of information about the hydrological effects of spatial harvest patterns in terms of their effects on streamflow. In this paper, we examined harvest amount and hillslope position effects on flow indices (Q70; Q50 and Q10) and water yield in a small catchment covered with a fast-growing Eucalyptus plantation. To do that, we used the Gridded Surface Subsurface Hydrologic Analysis (GSSHA), a physical-based distributed hydrological model, to simulate harvesting scenarios with different harvest amounts(30% and 70% of the forest plantation) at two hillslope positions (downslope and upslope). We also verified the influence of the amount of rainfall on peak flows for all scenarios. The results showed that the increase in water yield is positively related to the harvest amount and that, under the same harvest amount, harvests in downslope areas caused a larger increase in water yield than harvests in upslope areas. Downslope harvests led to a greater increase in peak flow under the 30% harvest. For the 70% harvest, no substantial effects of harvest position on peak flow could be detected. Incorporating harvest amounts and spatial patterns in Eucalyptus plantations management practices may be useful to mitigate their effects on water resources, especially in regions where water availability is generally lower.  aFast-growing forest plantation  aHydrologic model  aHydrological effect1 aSALEMI, L. F.1 aMINGOTI, R.1 aCASSIANO, C. C.1 aFRANSOZI, A. A.1 aFARIA, V. G. DE1 aVETTORAZZI, C. A.1 aLIMA, W. L.1 aFERRAZ, S. F. DE B.  tAdvances in Environmental and Engineering Researchgv. 4, n. 1, p. 1-17, 2023.