Welcome to Class! Friday 9-11 Complete the following:  Take out Ecological Pyramid Lab and Food Web Reconstruction Lab  New entry “Biomes”  Finish Vocabs 1-4 (many of you haven’t)

Agenda  Lecture notes on Biomes  Ecological succession worksheet  Review Symbiosis Relationship if time allow  Homefun:  Cornell Notes on “Population Growth 9-14 and 9-15”  Next Friday 9-18 is our Unit One Test!!! Study!

Biomes

Learning Objectives  Describe what biotic and abiotic factors characterize biomes.  Identify the areas that are not classified into a major biome.

Regional Climates Upwind side Downwind side Air rises and cools, releasing moisture. Air descends, warms, and becomes drier, decreasing moisture.

Earth’s Biomes

Reading a Climate Diagram

Tropical Rain Forest Abiotic: warm and wet year-round; soils are thin and nutrient-poor Biotic: plants with large leaves and buttress tree roots; animals active year-round

Tropical Dry Forest Rainy season Abiotic: warm year- round; alternating wet-dry seasons; rich soils Biotic: deciduous plants, waxy plant leaves; many animals estivate or migrate

Tropical Grassland/Savanna/Scrubland Biotic: plants with waxy leaves, seasonal leaf loss; many animals migrate or are dormant during dry season Abiotic: warm; seasonal rainfall; compact soils; frequent fires set by lightning

Desert Precipitation, not temperature, defines deserts. Biotic: small plant leaves; many animals nocturnal, many get water from their food Abiotic: low precipitation; variable temperatures; soils poor in organic material

Temperate Grassland Biotic: plants resistant to grazing and fire; small animals use camouflage and burrowing as protection Abiotic: warm summers, cold winters; moderate precipitation; fertile soils; occasional fires

Temperate Woodland and Shrubland High threat of wildfire Biotic: plants adapted to drought and fire; animals commonly browsers Abiotic: warm, dry summers; cool, moist winters; nutrient- poor soils; periodic fires

Temperate Forest Biotic: deciduous trees; some animals hibernate, some migrate in winter Abiotic: cold winters, warm summers; year-round precipitation; fertile soils

Northwestern Coniferous Forest Biotic: dense plant growth, tall trees; many animals have varied diets Abiotic: mild temperatures; abundant precipitation in fall, winter, and spring; cool, dry summers; rocky, acidic soils

Boreal Forest Biotic: dark-green conifers; many animals have extra insulation, some migrate in winter Abiotic: long, cold winters; mild summers; moderate precipitation; acidic, nutrient- poor soils

Tundra Low precipitation Biotic: small plants growing low to the ground; many animals migrate in winter or have heat-saving adaptations Abiotic: strong winds; low precipitation; short, soggy summers; long, cold, dark winters; permafrost

Other Land Areas Mountain ranges and polar ice caps are not easily defined by typical plant and animal communities.

Overview: Biomes

Student Worksheet Answers