WHAT ARE ECOSYSTEMS?WHAT ARE ECOSYSTEMS?

Where Things LiveWhere Things Live

Living things need a place to live and Living things need a place to live and grow.grow.

Fish live in water.Fish live in water.

Birds live in trees and fly Birds live in trees and fly through the through the air.air.

Plants grow where there is Plants grow where there is soil, water soil, water and sun.and sun.

Main Idea and DetailsMain Idea and Details

Living things need a place to live

and grow.

Fish live in water.Birds live in treesand fly in the air.

Plants grow where there is soil, water

and sun.

ENVIRONMENTENVIRONMENT The living and The living and

nonliving things nonliving things that surround a that surround a living thing make living thing make up its up its environment.environment.

What do living things get from What do living things get from their environments?their environments?

Many living things share their Many living things share their environments and its resources.environments and its resources.

1.1. FoodFood

2.2. WaterWater

3.3. OxygenOxygen

4.4. SpaceSpace

Parts of an EcosystemParts of an Ecosystem

An An ecosystemecosystem is made up of all the is made up of all the living and nonliving things in an living and nonliving things in an environmentenvironment..

Different types of organisms Different types of organisms live in an live in an ecosystem.ecosystem.

A group of organisms of the same kind living in the same place is a population.

All the population that live in All the population that live in an ecosystem at the same an ecosystem at the same time form a time form a community.community.

All members of a All members of a community live in the same community live in the same ecosystem but they do not ecosystem but they do not all live in the same part of all live in the same part of

the ecosystem.the ecosystem.

Where Plants and Animals Where Plants and Animals LiveLive

HabitatHabitat is a place where is a place where plants and animals lives.plants and animals lives.

It is a place where they can It is a place where they can meet their needs.meet their needs.

Animals get Animals get foodfood,, water water, and , and sheltershelter from their habitat, from their habitat,

Organisms and their Organisms and their HabitatsHabitats

Some organisms can survive only in Some organisms can survive only in certain habitats.certain habitats.

For example, a polar could not find For example, a polar could not find the water it needs in a desert.the water it needs in a desert.

Classify Living and Nonliving Classify Living and Nonliving thingsthings

Living ThingsLiving Things Non Living ThingsNon Living Things

Air

Rocks

Cave

Soil

water

Fish

Water lily

Plants

Animals

People

Use the following tree map to Use the following tree map to write a lesson summary. write a lesson summary.

Parts of an

Ecosystem

Populations Communities Habitats

Lesson 2 Lesson 2 What are some types of What are some types of

ecosystems?ecosystems?

Types of EcosystemsTypes of Ecosystems

Deserts are very Deserts are very dry ecosystems.dry ecosystems.

Desert plants and Desert plants and animals can animals can survive with very survive with very little water.little water.

Desert PlantsDesert Plants

Desert plants, such Desert plants, such as cactus, have as cactus, have thick stems that thick stems that store water.store water.

The roots of a The roots of a cactus lie just cactus lie just below the soil and below the soil and spread far from the spread far from the plant. plant.

Grassland EcosystemsGrassland Ecosystems

Grasslands are dry, Grasslands are dry, often flat areas of often flat areas of land that are hot in land that are hot in the summer and the summer and cold in the winter.cold in the winter.

They get more rain They get more rain and snow than and snow than deserts but less that deserts but less that most other most other ecosystems.ecosystems.

Plants Plants

The main plant in a The main plant in a grassland grassland ecosystem is grass. ecosystem is grass.

There are not There are not many bushes in the many bushes in the grassland. grassland.

Trees are found Trees are found only by rivers and only by rivers and streams. streams.

Saltwater EcosystemsSaltwater Ecosystems Saltwater ecosystems are oceans.Saltwater ecosystems are oceans. Oceans cover about three –fourths of Oceans cover about three –fourths of

Earth’s surface, so there are more Earth’s surface, so there are more saltwater ecosystems than any saltwater ecosystems than any other.other.

Sharks, sea turtles, corals and Sharks, sea turtles, corals and octopus are all ocean animals.octopus are all ocean animals.

So are whales and seals.So are whales and seals.

Freshwater EcosystemsFreshwater Ecosystems

Rivers, ponds, lakes and Rivers, ponds, lakes and streams have fresh water.streams have fresh water.

Lakes and rivers are closely Lakes and rivers are closely tied. Some lakes are the tied. Some lakes are the source for some rivers. source for some rivers. Important rivers, most Important rivers, most often, originate from lakes. often, originate from lakes. Some rivers end in lakes. Some rivers end in lakes.

Since both rivers and lakes Since both rivers and lakes are freshwater and flow in are freshwater and flow in and out of each other, they and out of each other, they share similar characteristics share similar characteristics and many species reside in and many species reside in both habitats. both habitats.

Forest EcosystemsForest Ecosystems

Forest are ecosystems in which many trees grow.

Tropical Rain ForestTropical Rain Forest

A tropical rain A tropical rain forest grows where forest grows where it is hot and wet all it is hot and wet all year long.year long.

Animals such as Animals such as jaguars and jaguars and monkeys live monkeys live there.there.

Deciduous ForestDeciduous Forest

What's A Temperate What's A Temperate Deciduous Forest Like?Deciduous Forest Like?

OOne of the most interesting ne of the most interesting features of the temperate features of the temperate deciduous forest is its deciduous forest is its changing seasons. .

The word "deciduous" means The word "deciduous" means exactly what the leaves on exactly what the leaves on these trees do: change color in these trees do: change color in autumn, fall off in the winter, autumn, fall off in the winter, and grow back again in the and grow back again in the spring. This adaptation helps spring. This adaptation helps trees in the forest survive trees in the forest survive winter. winter.

Drawing ConclusionsDrawing Conclusions

Suppose all the plants in one Suppose all the plants in one ecosystem died.ecosystem died.

What do you think would happen to What do you think would happen to that ecosystem?that ecosystem?

Why?Why?

EcosystemEcosystem What I look like What I look likeDesert

Rain ForestRains every day and has many trees and plants

Hot and dry

Deciduous Forest Enough rain for trees to grow. They lose their leaves in the fall.

Made up of rivers, ponds, lakes and streams and my water does not have much salt

Freshwater Ecosystems

Try this!Try this! Choose an ecosystem.Choose an ecosystem. Make a drawing of it.Make a drawing of it. Write a descriptive paragraph about Write a descriptive paragraph about

it.it. Include the following details:Include the following details:

1.1. Name of the ecosystemName of the ecosystem

2.2. Type characteristics of this ecosystemType characteristics of this ecosystem

3.3. Label animals and plants found there.Label animals and plants found there.