Teacher Page

1
Teacher Page

• Content Biology
• Grade Level High School
• Creator Lisa Boulden
• MAP Standard
• Define and describe the two types of ecosystems
• Special instructions
• Use the table of contents to review areas of the
  show
• Use a journal for notes and questions

Table of contents
To slide show
2
Table of contents

• Teacher page...
• Ecosystem definition...
• 2 types of ecosystems...
• Aquatic ecosystem...
• Terrestrial ecosystem...
• Comparing fresh water to marine water and to
  terrestrial ecosystems...
• The 7 biomes...
• Tropical rain forest...
• Savanna...
• Desert...
• Grassland...
• Deciduous forest...
• Taiga...
• Tundra...
• Start questions...

3
Ecosystems

• Biology
• High School

Teacher page
Slide show
4
What is an Ecosystem?

• An ecological system
• A community the many different species that live
  together in a habitat
• All of the physical aspects of a the habitat the
  soil, water, and weather

Table of contents
5
What are the two types of ecosystems?

• Aquatic or water
• Terrestrial or land
• Considering the two types of ecosystems, do you
  think that there are divisions within each type?
  Give one example of each.

Table of contents
6
Aquatic Ecosystems

• Marine
• shallow ocean waters-shorelines
• open sea surface
• deep sea waters

• Freshwater
• lakes
• ponds
• rivers
• streams

Table of contents
7
Question...

• How much of the Earth do you think is covered by
  marine ecosystems?
• Three-fourths

8
Terrestrial Ecosystems

• Biome-a major terrestrial community that is found
  in different areas with similar climates

Table of contents
9
Give examples in which freshwater ecosystems are
similar and different to marine and terrestrial
ecosystems

• Marine
• Differences
• limited in size
• cover only about 2.1 of the Earths surface

• Terrestrial
• Differences
• aquatic
• organisms

Table of contents
10
Similarities

• Marine
• Similarities
• same three zones shallow, open surface, deep
  water

• Terrestrial
• Similarities
• land borders freshwater
• organic and inorganic matter enters freshwater
  from land

11
Using prior knowledge list as many of the
terrestrial biomes that you can think of. (hint
there are seven)
12
The Seven Terrestrial Biomes

• Tropical rain forest...
• Savanna...
• Desert...
• Temperate grassland...
• Temperate deciduous forest...
• Taiga...
• Tundra...

Table of contents
13
Characteristics of each biome
14
Tropical Rain Forestlush equatorial forests

• Rain fall80-180 inches per year
• Richest species diversity more than 2 million,
  probably at least half of the Earths species
• Infertile soil, nutrients are held within the
  plants and recycled quickly
• Most of the roots of the tall trees spread
  through top 1-2cm of soil

biomes
Table of contents
15
Savannadry tropical grasslands

• Low annual precipitation 35-60 inches
• Prolonged annual dry seasons
• Found between tropical rain forests and deserts
• Opened landscape with widely spaced trees
• Many animals are active only during rainy season
• Huge herds of grazing animals

biomes
Table of contents
16
Desert arid lands

• Fewer than 10 inches of precipitation per year
• Rain fall varies from location to location and
  from year to year within each location
• Sparse vegetation
• Mostly in the interiors of continents
• Less than 5 of North America is desert

biomes
Table of contents
17
Temperate Grasslandsseas of grass

• Moderate climate
• Highly productive agriculture land
• Much of the interior of North America
• Also known as prairie
• Deep, fertile soil
• Roots of grasses typically penetrate far into the
  soil

biomes
Table of contents
18
Temperate Deciduous Forests rich hardwood forests

• Relatively mild climate
• Deciduous trees-shed their leaves in the fall
• Warm summers and cold winters
• Annual precipitation 30-100 inches
• Moisture is generally unavailable in winter
  because it is frozen
• Home to deer, bears, beavers, raccoons
• Hardwood trees such as oak, hickory, beech
• Shrubs and herbs grow on the forest floor

biomes
Table of contents
19
Taiga great coniferous forests

• Cold, wet climate
• Winters are long and cold
• Most of the precipitation falls in the summer
• Days are short in winter and long in summer
• Plants grow rapidly during the summer
• Marshes, lakes, and ponds are common
• Trees occur in dense stands
• Home to large animals such as elk, moose, deer,
  wolves, bear, lynxes, wolverines

biomes
Table of contents
20
Tundra cold plains

• Far north between the taiga and the North Pole
• Few trees, usually grasses, dwarf willows,
  mosses
• One-fifth of the Earths land surface
• Annual precipitation is less than 10 inches
• Surface is frozen except for brief Arctic summer
• Animals include foxes, lemmings, owls, and caribou

biomes
Table of contents
21
Answer the following questions by using the
information in the last seven slides.
Table of contents
22
Question 1Which biome do you think we live in
and why?
23
Answer 1We live on the boarder of a temperate
deciduous forest and a temperate grassland. Much
of our area is used as agriculture land, but we
have large forests of deciduous trees. Our
climate is similar to both biomes, we have mild
to moderate temperatures and rain fall.
24
Question 2Which biome has the highest species
diversity? What is the estimated total number of
species for this biome?
25
Answer 2Tropical Rain ForestOver 2 million
species
26
Question 3What common environmental hardship
confronts organisms in deserts and tundra?
27
Answer 3

• Organisms in deserts and tundra commonly
  encounter extreme temperatures, scarcity of
  water, and lack of plants to depend on for food