A volcanic eruption is where the magma rises and gathers in the magma chamber. The magma pushes through the Earth's surface. The magma shoots through the surface. The magma that erupted is now called lava. This hardens into rock. This affects lots of objects in a biome.
What's Going To Be Left?
When the volcano erupts all of the magma will turn into rock.This will cover all pre-existing ecosystem, habitats and micro-habitats. Now there is just rock and no living ecosystem left. There is no living organisms now in this area.
Volcano eruption filmed in timelapse
The habitats are going to be ruined. The habitats are where animals live. When the volcano erupts all of the habitats gets crushed and covered. Now animals don't have there home. Animals will either migrate, adapt or die. Most likely all of the will die, because of all lava covering the animals without any food, water or air.
After the volcanic eruption most animals will die, migrate or die, this will cause the biodiversity to go decrease. The biodiversity will decrease because the types of animal will M.A.D. The sustainability will also decrease with the biodiversity.
The food webs will decrease because the animal and the producers will decrease. Animals will migrate, adapt to new conditions or die. The primary, secondary, tertiary will decrease because of the eruption. The food web would slowly decrease because most of the other animals would die or migrate.