diff --git a/bushes/init.lua b/bushes/init.lua
index 7046462..f0a2631 100644
--- a/bushes/init.lua
+++ b/bushes/init.lua
@@ -188,7 +188,7 @@ abstract_bushes.grow_bush_node = function(pos,dir, leaf_type)
 end
 
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:dirt_with_grass",
 		"stoneage:grass_with_silex",
@@ -230,7 +230,7 @@ abstract_bushes.grow_youngtree_node2 = function(pos, height)
 end
 
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:dirt_with_grass",
 		"stoneage:grass_with_silex",
diff --git a/bushes_classic/init.lua b/bushes_classic/init.lua
index 353bdc7..a470a8f 100644
--- a/bushes_classic/init.lua
+++ b/bushes_classic/init.lua
@@ -30,7 +30,7 @@ local modpath = minetest.get_modpath('bushes_classic')
 dofile(modpath..'/cooking.lua')
 dofile(modpath..'/nodes.lua')
 
-biome_lib:spawn_on_surfaces({
+biome_lib.register_active_spawner({
 	spawn_delay = 3600,
 	spawn_plants = bushes_classic.spawn_list,
 	avoid_radius = 10,
diff --git a/cavestuff/mapgen.lua b/cavestuff/mapgen.lua
index 5c8aae3..92989bc 100644
--- a/cavestuff/mapgen.lua
+++ b/cavestuff/mapgen.lua
@@ -1,6 +1,6 @@
 --Map Generation Stuff
 
-biome_lib:register_generate_plant(
+biome_lib.register_on_generate(
 	{
 		surface = {
 			"default:dirt_with_grass",
@@ -20,7 +20,7 @@ biome_lib:register_generate_plant(
 	}
 )
 
-biome_lib:register_generate_plant(
+biome_lib.register_on_generate(
 	{
 		surface = {
 			"default:desert_sand",
diff --git a/dryplants/juncus.lua b/dryplants/juncus.lua
index 15d45e5..fee704a 100644
--- a/dryplants/juncus.lua
+++ b/dryplants/juncus.lua
@@ -95,7 +95,7 @@ minetest.register_node("dryplants:juncus_02", {
 -- GENERATE SMALL JUNCUS
 -----------------------------------------------------------------------------------------------
 -- near water or swamp
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:dirt_with_grass",
 		--"default:desert_sand",
@@ -116,7 +116,7 @@ biome_lib:register_generate_plant({
   abstract_dryplants.grow_juncus
 )
 -- at dunes/beach
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		--"default:dirt_with_grass",
 		--"default:desert_sand",
diff --git a/dryplants/meadowvariation.lua b/dryplants/meadowvariation.lua
index 090eaed..5a1b5c2 100644
--- a/dryplants/meadowvariation.lua
+++ b/dryplants/meadowvariation.lua
@@ -11,7 +11,7 @@ abstract_dryplants.grow_grass_variation = function(pos)
 	minetest.swap_node(pos, {name="dryplants:grass_short"})
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:dirt_with_grass",
 	},
diff --git a/dryplants/moregrass.lua b/dryplants/moregrass.lua
index 46768e7..e953c27 100644
--- a/dryplants/moregrass.lua
+++ b/dryplants/moregrass.lua
@@ -7,7 +7,7 @@
 -- Looked at code from:		default
 -----------------------------------------------------------------------------------------------
 
-biome_lib:register_generate_plant(
+biome_lib.register_on_generate(
 	{
 		surface = {
 			"default:dirt_with_grass",
diff --git a/dryplants/reedmace.lua b/dryplants/reedmace.lua
index 4f61820..602f0b8 100644
--- a/dryplants/reedmace.lua
+++ b/dryplants/reedmace.lua
@@ -330,7 +330,7 @@ minetest.register_entity("dryplants:reedmace_water_entity",{
 -----------------------------------------------------------------------------------------------
 -- SPAWN REEDMACE
 -----------------------------------------------------------------------------------------------
---[[biome_lib:spawn_on_surfaces({
+--[[biome_lib.register_active_spawner({
 	spawn_delay = 1200,
 	spawn_plants = {"dryplants:reedmace_sapling"},
 	spawn_chance = 400,
@@ -351,7 +351,7 @@ minetest.register_entity("dryplants:reedmace_water_entity",{
 -- GENERATE REEDMACE
 -----------------------------------------------------------------------------------------------
 -- near water or swamp
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:dirt_with_grass",
 		"default:desert_sand",
@@ -372,7 +372,7 @@ biome_lib:register_generate_plant({
   abstract_dryplants.grow_reedmace
 )
 -- in water
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:dirt",
 		"default:dirt_with_grass",
@@ -395,7 +395,7 @@ biome_lib:register_generate_plant({
   abstract_dryplants.grow_reedmace_water
 )
 -- for oases & tropical beaches & tropical swamps
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:sand",
 		"sumpf:sumpf"
diff --git a/ferns/fern.lua b/ferns/fern.lua
index 2c5278f..f29e459 100644
--- a/ferns/fern.lua
+++ b/ferns/fern.lua
@@ -87,7 +87,7 @@ end
 -----------------------------------------------------------------------------------------------
 
 if abstract_ferns.config.lady_ferns_near_tree == true then
-	biome_lib:register_generate_plant({ -- near trees (woodlands)
+	biome_lib.register_on_generate({ -- near trees (woodlands)
 		surface = {
 			"default:dirt_with_grass",
 			"default:mossycobble",
@@ -116,7 +116,7 @@ if abstract_ferns.config.lady_ferns_near_tree == true then
 end
 
 if abstract_ferns.config.lady_ferns_near_rock == true then
-	biome_lib:register_generate_plant({ -- near stone (mountains)
+	biome_lib.register_on_generate({ -- near stone (mountains)
 		surface = {
 			"default:dirt_with_grass",
 			"default:mossycobble",
@@ -143,7 +143,7 @@ if abstract_ferns.config.lady_ferns_near_rock == true then
 end
 
 if abstract_ferns.config.lady_ferns_near_ores == true then -- this one causes a huge fps drop
-	biome_lib:register_generate_plant({ -- near ores (potential mining sites)
+	biome_lib.register_on_generate({ -- near ores (potential mining sites)
 		surface = {
 			"default:dirt_with_grass",
 			"default:mossycobble",
@@ -183,7 +183,7 @@ if abstract_ferns.config.lady_ferns_near_ores == true then -- this one causes a
 end
 
 if abstract_ferns.config.lady_ferns_in_groups == true then -- this one is meant as a replacement of Ferns_near_Ores
-	biome_lib:register_generate_plant({
+	biome_lib.register_on_generate({
 		surface = {
 			"default:dirt_with_grass",
 			"default:mossycobble",
diff --git a/ferns/gianttreefern.lua b/ferns/gianttreefern.lua
index 937e2fd..c5b0f14 100644
--- a/ferns/gianttreefern.lua
+++ b/ferns/gianttreefern.lua
@@ -298,7 +298,7 @@ minetest.register_abm({
 
 -- in jungles
 if abstract_ferns.config.enable_giant_treeferns_in_jungle == true then
-	biome_lib:register_generate_plant({
+	biome_lib.register_on_generate({
 		surface = {
 			"default:dirt_with_grass",
 			"default:dirt_with_rainforest_litter", -- minetest >= 0.4.16
@@ -324,7 +324,7 @@ end
 
 -- for oases & tropical beaches
 if abstract_ferns.config.enable_giant_treeferns_in_oases == true then
-	biome_lib:register_generate_plant({
+	biome_lib.register_on_generate({
 		surface = {
 			"default:sand"--,
 			--"default:desert_sand"
diff --git a/ferns/horsetail.lua b/ferns/horsetail.lua
index b41f811..3fefb04 100644
--- a/ferns/horsetail.lua
+++ b/ferns/horsetail.lua
@@ -75,7 +75,7 @@ create_nodes()
 -- Spawning
 -----------------------------------------------------------------------------------------------
 if abstract_ferns.config.enable_horsetails_spawning == true then
-	biome_lib:spawn_on_surfaces({
+	biome_lib.register_active_spawner({
 		spawn_delay = 1200,
 		spawn_plants = node_names,
 		spawn_chance = 400,
@@ -104,7 +104,7 @@ end
 -----------------------------------------------------------------------------------------------
 
 if abstract_ferns.config.enable_horsetails_on_grass == true then
-	biome_lib:register_generate_plant({
+	biome_lib.register_on_generate({
 		surface = {
 			"default:dirt_with_grass",
 			"default:dirt_with_coniferous_litter", -- minetest >= 0.5
@@ -137,7 +137,7 @@ if abstract_ferns.config.enable_horsetails_on_grass == true then
 end
 
 if abstract_ferns.config.enable_horsetails_on_stones == true then
-	biome_lib:register_generate_plant({
+	biome_lib.register_on_generate({
 		surface = {
 			"default:gravel", -- roots go deep
 			"default:mossycobble",
diff --git a/ferns/treefern.lua b/ferns/treefern.lua
index dc6d2e7..488f74e 100644
--- a/ferns/treefern.lua
+++ b/ferns/treefern.lua
@@ -179,7 +179,7 @@ minetest.register_abm({
 
 -- in jungles
 if abstract_ferns.config.enable_treeferns_in_jungle == true then
-	biome_lib:register_generate_plant({
+	biome_lib.register_on_generate({
 		surface = {
 			"default:dirt_with_grass",
 			"default:dirt_with_rainforest_litter", -- minetest >= 0.4.16
@@ -208,7 +208,7 @@ end
 
 -- for oases & tropical beaches
 if abstract_ferns.config.enable_treeferns_in_oases == true then
-	biome_lib:register_generate_plant({
+	biome_lib.register_on_generate({
 		surface = {
 			"default:sand"--,
 			--"default:desert_sand"
diff --git a/flowers_plus/init.lua b/flowers_plus/init.lua
index 2b3e237..f0760e3 100644
--- a/flowers_plus/init.lua
+++ b/flowers_plus/init.lua
@@ -80,16 +80,16 @@ for i in ipairs(lilies_list) do
 			local above_node = minetest.get_node(pt.above)
 			local top_node   = minetest.get_node(top_pos)
 
-			if biome_lib:get_nodedef_field(under_node.name, "buildable_to") then
+			if biome_lib.get_nodedef_field(under_node.name, "buildable_to") then
 				if under_node.name ~= "default:water_source" then
 					place_pos = pt.under
 				elseif top_node.name ~= "default:water_source"
-				       and biome_lib:get_nodedef_field(top_node.name, "buildable_to") then
+				       and biome_lib.get_nodedef_field(top_node.name, "buildable_to") then
 					place_pos = top_pos
 				else
 					return
 				end
-			elseif biome_lib:get_nodedef_field(above_node.name, "buildable_to") then
+			elseif biome_lib.get_nodedef_field(above_node.name, "buildable_to") then
 				place_pos = pt.above
 			end
 
@@ -180,18 +180,19 @@ for i in ipairs(algae_list) do
 			local above_node = minetest.get_node(pt.above)
 			local top_node   = minetest.get_node(top_pos)
 
-			if biome_lib:get_nodedef_field(under_node.name, "buildable_to") then
+			if biome_lib.get_nodedef_field(under_node.name, "buildable_to") then
 				if under_node.name ~= "default:water_source" then
 					place_pos = pt.under
 				elseif top_node.name ~= "default:water_source"
-				       and biome_lib:get_nodedef_field(top_node.name, "buildable_to") then
+				       and biome_lib.get_nodedef_field(top_node.name, "buildable_to") then
 					place_pos = top_pos
 				else
 					return
 				end
-			elseif biome_lib:get_nodedef_field(above_node.name, "buildable_to") then
+			elseif biome_lib.get_nodedef_field(above_node.name, "buildable_to") then
 				place_pos = pt.above
 			end
+			if not place_pos then return end -- something went wrong :P
 
 			if not minetest.is_protected(place_pos, placer:get_player_name()) then
 
@@ -301,7 +302,7 @@ flowers_plus.grow_waterlily = function(pos)
 	end
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:water_source"},
     max_count = lilies_max_count,
     rarity = lilies_rarity,
@@ -323,7 +324,7 @@ flowers_plus.grow_seaweed = function(pos)
 	minetest.swap_node(right_here, {name="along_shore:seaweed_"..random(1,4), param2=random(1,3)})
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:water_source"},
     max_count = seaweed_max_count,
     rarity = seaweed_rarity,
@@ -340,7 +341,7 @@ biome_lib:register_generate_plant({
 
 -- seaweed at beaches
 -- MM: not satisfied with it, but IMHO some beaches should have some algae
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:water_source"},
     max_count = seaweed_max_count,
     rarity = seaweed_rarity,
@@ -356,7 +357,7 @@ biome_lib:register_generate_plant({
   },
   flowers_plus.grow_seaweed
 )
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:sand"},
     max_count = seaweed_max_count*2,
     rarity = seaweed_rarity/2,
@@ -373,7 +374,7 @@ biome_lib:register_generate_plant({
   flowers_plus.grow_seaweed
 )
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
 	surface = {"default:dirt_with_grass"},
 	avoid_nodes = { "flowers:sunflower" },
 	max_count = sunflowers_max_count,
@@ -388,7 +389,7 @@ biome_lib:register_generate_plant({
 
 -- spawn ABM registrations
 
-biome_lib:spawn_on_surfaces({
+biome_lib.register_active_spawner({
 	spawn_delay = SPAWN_DELAY/2,
 	spawn_plants = {
 		"flowers:waterlily",
@@ -410,7 +411,7 @@ biome_lib:spawn_on_surfaces({
 	random_facedir = {0,3}
 })
 
-biome_lib:spawn_on_surfaces({
+biome_lib.register_active_spawner({
 	spawn_delay = SPAWN_DELAY*2,
 	spawn_plants = {"flowers:seaweed"},
 	spawn_chance = SPAWN_CHANCE*2,
@@ -423,7 +424,7 @@ biome_lib:spawn_on_surfaces({
 	facedir = 1
 })
 
-biome_lib:spawn_on_surfaces({
+biome_lib.register_active_spawner({
 	spawn_delay = SPAWN_DELAY*2,
 	spawn_plants = {"flowers:seaweed"},
 	spawn_chance = SPAWN_CHANCE*2,
@@ -437,7 +438,7 @@ biome_lib:spawn_on_surfaces({
 	facedir = 1
 })
 
-biome_lib:spawn_on_surfaces({
+biome_lib.register_active_spawner({
 	spawn_delay = SPAWN_DELAY*2,
 	spawn_plants = {"flowers:seaweed"},
 	spawn_chance = SPAWN_CHANCE*2,
@@ -451,7 +452,7 @@ biome_lib:spawn_on_surfaces({
 	facedir = 1
 })
 
-biome_lib:spawn_on_surfaces({
+biome_lib.register_active_spawner({
 	spawn_delay = SPAWN_DELAY*2,
 	spawn_plants = {"flowers:sunflower"},
 	spawn_chance = SPAWN_CHANCE*2,
diff --git a/molehills/init.lua b/molehills/init.lua
index 2f53f40..481c866 100644
--- a/molehills/init.lua
+++ b/molehills/init.lua
@@ -62,7 +62,7 @@ abstract_molehills.place_molehill = function(pos)
 	end
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:dirt_with_grass"},
     max_count = Molehills_Max_Count,
     rarity = Molehills_Rarity,
diff --git a/poisonivy/init.lua b/poisonivy/init.lua
index ae302a5..0c914fa 100644
--- a/poisonivy/init.lua
+++ b/poisonivy/init.lua
@@ -70,7 +70,7 @@ minetest.register_node('poisonivy:climbing', {
 	buildable_to = true,
 })
 
-biome_lib:spawn_on_surfaces({
+biome_lib.register_active_spawner({
 	spawn_delay = SPAWN_DELAY,
 	spawn_plants = {"poisonivy:seedling"},
 	avoid_radius = 10,
@@ -83,7 +83,7 @@ biome_lib:spawn_on_surfaces({
 	verticals_list = walls_list
 })
 
-biome_lib:grow_plants({
+biome_lib.update_plant({
 	grow_delay = SPAWN_DELAY,
 	grow_chance = GROW_CHANCE,
 	grow_plant = "poisonivy:seedling",
@@ -91,7 +91,7 @@ biome_lib:grow_plants({
 	grow_nodes = {"default:dirt_with_grass"}
 })
 
-biome_lib:grow_plants({
+biome_lib.update_plant({
 	grow_delay = GROW_DELAY,
 	grow_chance = GROW_CHANCE*2,
 	grow_plant = "poisonivy:climbing",
diff --git a/trunks/generating.lua b/trunks/generating.lua
index f693df6..5decb7c 100644
--- a/trunks/generating.lua
+++ b/trunks/generating.lua
@@ -169,7 +169,7 @@ abstract_trunks.place_twig = function(pos)
 end
 
 if Twigs_on_ground == true then
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:dirt_with_grass"},
     max_count = Twigs_on_ground_Max_Count,
     rarity = Twigs_on_ground_Rarity,
@@ -186,7 +186,7 @@ biome_lib:register_generate_plant({
 end
 
 if Twigs_on_water == true then
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:water_source"},
     max_count = Twigs_on_water_Max_Count,
     rarity = Twigs_on_water_Rarity,
@@ -348,7 +348,7 @@ abstract_trunks.place_trunk = function(pos)
 	end
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:dirt_with_grass"},
     max_count = Trunks_Max_Count, -- 320,
     rarity = Trunks_Rarity, -- 99,
@@ -382,7 +382,7 @@ abstract_trunks.grow_moss_on_ground = function(pos)
 
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"default:dirt_with_grass"},
     max_count = Moss_on_ground_Max_Count,
     rarity = Moss_on_ground_Rarity,
@@ -471,7 +471,7 @@ abstract_trunks.grow_moss_on_trunk = function(pos)
 	--end
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:tree",
 		"default:jungletree",
@@ -548,7 +548,7 @@ abstract_trunks.grow_roots = function(pos)
 	end
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {"group:tree"},
     max_count = 1000,
     rarity = 1,
diff --git a/vines/init.lua b/vines/init.lua
index d95b556..f937b57 100644
--- a/vines/init.lua
+++ b/vines/init.lua
@@ -135,7 +135,7 @@ vines.register_vine = function( name, defs, biome )
 		end,
 	})
 
-	biome_lib:spawn_on_surfaces(biome)
+	biome_lib.register_active_spawner(biome)
 end
 
 -- ALIASES
diff --git a/woodsoils/generating.lua b/woodsoils/generating.lua
index a044a9b..c250f2a 100644
--- a/woodsoils/generating.lua
+++ b/woodsoils/generating.lua
@@ -73,7 +73,7 @@ abstract_woodsoils.place_soil = function(pos)
 	end
 end
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"group:tree",
 		"ferns:fern_03",
@@ -94,7 +94,7 @@ biome_lib:register_generate_plant({
   "abstract_woodsoils.place_soil"
 )
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"moretrees:apple_tree_sapling_ongen",
 		"moretrees:beech_sapling_ongen",
diff --git a/youngtrees/init.lua b/youngtrees/init.lua
index bac8323..ce05c5c 100644
--- a/youngtrees/init.lua
+++ b/youngtrees/init.lua
@@ -134,7 +134,7 @@ abstract_youngtrees.grow_youngtree_node = function(pos, height)
 end
 
 
-biome_lib:register_generate_plant({
+biome_lib.register_on_generate({
     surface = {
 		"default:dirt_with_grass",
 		"stoneage:grass_with_silex",