Once an oak tree becomes established, it is likely to survive minor cycles of drought and even fire.

一棵橡树一旦长成，就有可能在干旱甚至火灾的小周期中存活下来。

That's only a small share of the total acreage that could benefit, about half a million acres in all, so it will be vital to prioritize areas at greatest risk of fire or drought.

这只是受益总面积的一小部分，共约50万英亩，所以优先考虑火灾或干旱风险最大的地区是至关重要的。

Drought, fire, pathogenic fungi and introduced predators have put it in immediate danger of extinction.

干旱、火灾、毒蘑菇以及捕食者的引入使得黄腿山蛙处于灭绝的危险境地。