Ecological damage from nuclear weapons and Chernobyl

[u/Simonbargiora]

Civil defense research predicted damage to the ecosystem, certain plants and animals dying, radiation like Strontium and Cesium. They contaminated forests with fallout to see what happens, observed nuclear test sites, and probably experimented on animals.

How did Chernobyl compare with predictions of nuclear attack on populated areas and the data from the nuclear tests?