creator of biodiversity

1
Forest fires
- creator of biodiversity
(picture from http//searchcorbis.com)
2
Swedens biomes
(pictures from Sveriges nationalparker,
Bokforlaget Prisma 1983)
3
Natural disaster that

• regulate population size

• Increase biodiversity

• Is caused by lightning strikes

4
Modern firefighting
(pictures from http//search.corbis.com)
5
Succession after a fire in a coniferforest

• Flourishing seeds and roots

• Fire

• pH less acidic

• Fungi and bacteria

• Insects

• Deciduous trees

(picture from http//search.corbis.com)
6
20 years later

• Unique insects fly away

• Conifer trees starts to compete

• Moldering trees attracts insects

• Perfect environment for woodpeckers

• After 60-70 years conifer trees dominate

7
Four important factors
for the survival of populations

• Ability to spread

• Distance to the nearest area where the specie
  occur

• The greatness of the area

• The quality of the area

8
The Dendrocopos leucotos
A woodpecker soon to be extinct in Sweden
(pictures from L.JohnssonsFoglar I Europa 1992)
9
Natural fires is still the best way
to preserve the endangered species
(picture from http//search.corbis.com)