minetest.register_abm({
    nodenames = {"group:leaves"},
    interval = 2,
    chance = 15,
    action = function(pos, node, active_object_count, active_object_count_wider)
      if minetest.get_node(pos).param2 == 0 then
      local found = minetest.find_node_near(pos, 5, {"group:tree"})
      local ausnahme = minetest.find_node_near(pos, 3, {"bushes:youngtree2_bottom"})
      local ausnahme2 = minetest.find_node_near(pos, 3, {"default:bush_stem"})
      if found == nil and ausnahme == nil and ausnahme2 == nil then
        minetest.remove_node(pos)
        local itemstacks = minetest.get_node_drops(node.name)
        for _, itemname in ipairs(itemstacks) do
          minetest.add_item(pos, itemname)
        end
      end
    end
  end})

minetest.register_abm({
    nodenames = {"factory:sapling_fertilizer"},
    interval = 1,
    chance = 1,
    action = function(pos, node, active_object_count, active_object_count_wider)
      minetest.remove_node(pos)
    end})

minetest.register_abm({
    nodenames = {"trunks:moss"},
    interval = 1,
    chance = 1,
    action = function(pos, node, active_object_count, active_object_count_wider)
      local found = minetest.find_node_near(pos, 1, {"group:tree"})
      if found == nil then
        minetest.remove_node(pos)
        local itemstacks = minetest.get_node_drops(node.name)
        for _, itemname in ipairs(itemstacks) do
          minetest.add_item(pos, itemname)
        end
      end
    end})

minetest.register_abm({
    nodenames = {"trunks:moss_fungus"},
    interval = 1,
    chance = 1,
    action = function(pos, node, active_object_count, active_object_count_wider)
      local found = minetest.find_node_near(pos, 1, {"group:tree"})
      if found == nil then
        minetest.remove_node(pos)
        local itemstacks = minetest.get_node_drops(node.name)
        for _, itemname in ipairs(itemstacks) do
          minetest.add_item(pos, itemname)
        end
      end
    end})

minetest.register_abm({
    nodenames = {"default:snow"},
    interval = 1,
    chance = 1,
    action = function(pos, node, active_object_count, active_object_count_wider)
      local found1 = minetest.find_node_near(pos, 1, {"group:soil"})
      local found2 = minetest.find_node_near(pos, 1, {"group:leaves"})
      if found1 == nil and found2 == nil then
        minetest.remove_node(pos)
        local itemstacks = minetest.get_node_drops(node.name)
        for _, itemname in ipairs(itemstacks) do
          minetest.add_item(pos, itemname)
        end
      end
    end})