Unfortunately, a volcano eruption had happened in an alpine tundra biome in the Himalayas in Asia.  The most obvious change of the biome was the temperature.  Since the plants and animals are accustomed to the low temperature in alpine tundra, the burning lava had wiped out most of them, and the bigger animals in this biome such as the bighorn sheep and mountain goat went into distinction. 

       

     The ash in the air was another killing factor for the animals live in this biome, the pika or marmot might have successfully avoided the burning lava because their body size are relatively small, but they will eventually be killed by the ash in the air. 

     The animal that most likely would survive after the eruption is ptarmigan because they might possibly have flown away before the eruption occurred.  

     The damage of plantation in the alpine tundra is even more severe. Since the original alpine environment was harsh enough for plants to grow up, the volcano made those plants impossible to survive. However, after the volcano, there is a chance the soil would become more arable, and the cushion plants would have a chance to come back to the alpine tundra.