Sam & Kivonte ’

Sam & Kivonte’

Introduction The boreal forest or taiga exists as a

nearly continuous belt of coniferous trees across North America and Eurasia.

Taiga is the Russian name for this forest

However, the term is used in North America as well.

The Location North America Eurasia

Characteristics These forests are huge carbon sinks Large diversity of soil microorganisms

in these three forest soils These forests have large total leaf

area and they contribute a lot of leaf litter to the ground.

Soil Type Podzolization occurs as a result of the

acid soil solution produced under needle leaf trees

The main soil order associated with the taiga is spodosol.

Climate The taiga corresponds with regions of

subarctic and cold continental climate. For example, Verkhoyansk, Russia, has

recorded extremes of minus 90 ° F and plus 90 ° F.

Biotic & Abiotic Factors Biotic Factors:

1.Black Bear 2.Fox 3.Squirrel 4.Deer 5.Coyote

Abiotic Factors: 1.Large amounts of precipitation 2.Both cold and hot seasons 3.Little amount of sunlight reaches through the trees 4.The soil is very fertile 5.Distant from the sea

Boreal Forest Com

petition Adaptation

A group of squirrels eating a colony of beetles!

A red fox eating a squirrel.

six tree species forming a boreal climax forest

The main reasons firs, spruce and pines are the dominant trees in the boreal forest,

adapted to the extreme conditions brought about by the cold,

including the winter-induced drought and the short growing season

Hum

ansInfluences

Impacts

The frequency of forest fires during the past 600 yr was studied 281 sample plots within boreal forest

ecosystems It was found that all these factors have

influenced the vegetation Fires led to a widespread vegetation mosaic

Human Activities Logging Mining Hydroelectric Development Forestry Construction

 Vacation Spot (Hay-Zama Lakes)

 Vacation Sot (Liard River)

The End

Sam & Kivonte’