{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

14forest - BIO 20 FOREST 1 FORESTS 1A CONIFER FORESTS also...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
BIO 20 FOREST 1 FORESTS 1A. CONIFER FORESTS also taiga or boreal forests - dark evergreen trees below tundra - northern hemisphere around Arctic - incl. redwoods in northern Calif. - 11% land surface seasons - pronounced, humid, low evap. - long winters cold & snowy - short summers cool & rainy/foggy soil - low in nutrients, decompose slowly - deep leaf litter, acidic from bark 1B. PLANTS & ANIMALS conifers - fir, larch, pine, spruce - low diversity (uniform) but very dense - needles thick, evergreen, drop gradual - drooping branches to shed snow load - seeds from cones, no flowers - understory of moss & lichens grows in shade, incr soil moisture animals - large, short appendages, pale - many migratory (caribou, moose) - carnivores incl. owls, weasels, wolves 1C. CONIFER ECOLOGY productivity - nutrients in trees & litter - usually low (cold, short season) logging - most of the world’s lumber - slow rate of regeneration - forms bogs, expands tundra (Siberia) hydroelectric schemes - dam freshwater rivers & lakes - flood indigenous & waterfowl sites
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
BIO 20 FOREST 2 2A. DECIDUOUS FORESTS
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}