Fire can change gallery forest vegetation structure, thereby altering nutrient fluxes between terrestrial and aquatic ecosystems. In Brazilian savannas, which are fire-prone ecosystems, the fire regime is changing due to human activities such as converting native vegetation to farmland and urban areas. Uncontrolled wildfires in these savannas can reach gallery forests, which are more sensitive to fire impacts, leading to concerns about the effects of fire on gallery forest vegetation structure and freshwater ecosystems. We analysed the relationships between fire severity (the degree to which the fire has changed an area), percentage of burned area, variation in precipitation with gallery forest and savanna vegetation structure recovery and input of nutrients (NH₄, ${\mathrm{NO}}_2^{-}$, ${\mathrm{NO}}_3^{-}$ and ${\mathrm{PO}}_4^3$) to streams for 16 months after a fire event in five watersheds associated with small streams. One year after the fire, vegetation recovery (NDVI) was lower in gallery forest areas than in savanna woodlands, despite the more severe fires in savannas. The short-term effects of fire on gallery forest vegetation included increased nitrate concentrations in streams, which were also influenced by increased precipitation and the extent of the burned area. The nutrient inputs into the stream stabilized within 1 year. However, gallery forest vegetation did not fully recover at that time and may continue to alter the functioning of the aquatic ecosystem. Together, these results demonstrate the need for an integrated fire management plan that considers both gallery forests and the surrounding savannas in the landscape to address consequences to aquatic ecosystems.

中文翻译：

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火灾对巴西塞拉多河岸植被恢复和养分通量的影响

火灾可以改变廊道森林植被结构，从而改变陆地和水生生态系统之间的养分通量。在易发生火灾的生态系统巴西稀树草原中，由于人类活动（例如将原生植被转变为农田和城市地区），火灾状况正在发生变化。这些稀树草原中不受控制的野火可以蔓延到对火灾影响更敏感的画廊森林，导致人们担心火灾对画廊森林植被结构和淡水生态系统的影响。我们分析了火灾严重程度（火灾改变区域的程度）、烧毁面积百分比、降水随廊道森林和稀树草原植被结构恢复的变化以及养分输入（NH ₄，${不}_2^{-}$,${不}_3^{-}$和${\mathrm{采购订单}}_4^3$) 在与小溪流相关的五个分水岭发生火灾事件后，流域持续 16 个月。火灾一年后，尽管稀树草原的火灾更为严重，但廊道林地区的植被恢复 (NDVI) 低于稀树草原林地。火灾对廊道森林植被的短期影响包括河流中硝酸盐浓度的增加，这也受到降水增加和烧毁面积范围的影响。流入河流的养分在 1 年内稳定下来。然而，当时画廊森林植被并没有完全恢复，可能会继续改变水生生态系统的功能。一起，