World Biomes

• There are 7 world biomes:– Try to name as many as you can.– Write down 2 characteristics of the biome as

well.• HINT: 1. Tropical Rainforest

– Characteristics….

World Biomes

What are they?

1. Tropical Rainforest

Facts1. Lots of rain

(80-180 in. year)2. High constant temp3. Most biodiversity4. Low nutrient soil

2. Savanna

Facts1. Low rain fall(35-60 in. year)2. More temp changes than rainforest

3. Temperate Grassland

Facts1. Nutrient rich soils2. Seasonal temps3. Low rain fall

4. Temperate ForestsTemperate Rainforest Temperate Deciduous

Forest

Temperate Pine Forest

Green on Map:Deciduous Forest

Facts (Deciduous)1. More rain than grassland (30-100

in. year)2. Seasonal temps3. Water

unavailable in winter

5. Desert

Facts• Extremely lowRainfall (less than 10In. year)2. Large daily temp fluctuations

6. Taiga

Facts1. Cold and wet

7. Tundra

Facts1. Cold2. Low rain fall andmostly frozen (lessthan 10 in. year)

(Ecology Cont.)Populations

• What is a population?– The amount of individuals of one species.

• Species have different strategies to reproduce and survive

• 2 types r and k adapted

LIFE STRATEGY

• r STRATEGY– USUALLY SMALL ORGAINSMS– SHORT LIFE SPAN – HIGH DEATH RATE– MANY FAST MATURING OFFSPRING– LITTLE/NO CARE OF OFFSPRING– EARLY IN LIFE REPRODUCTIVE ABILITY

STRATEGY CONTINUED

• K STRATEGY– LARGER ORGANISMS– LONGER LIFE SPAN – LOW DEATH RATE– FEW, SLOW MATURING OFFSPRING– EXTENSIVE PARENTAL CARE– LATE IN LIFE REPRODUCTIVE ABILITY

What is a food web?

• Shows all predation interactions between species in an ecosystem.

Population Growth

• How populations can grow.

• Two types- Exponential and Logistic

Starts small, but grows to a large amount

-S shaped-Reaches a carrying capacity

Carrying capacity

Currently population is exponentialHopefully will become logistical (S shaped)

Carrying Capacity?