Slide 1

Unit 3 - Life on Earth Biodiversity and Investigating Ecosystems

Slide 2

Biomes Biome: are the various regions of our planet as distinguished by their similar climate, fauna and flora. Global distribution of biomes can be influenced by temperature and rainfall. Can you think of any examples of biomes?

Slide 3

Name the biomes... A B C D

Slide 4

Ecosystems All living organisms interact with other living things and their non-living surroundings. We call this interaction an ecosystem. living organisms + non-living= surroundings ecosystem

Slide 5

Soil Ecosystem Whats living? Whats non-living?

Slide 6

Fresh Water Ecosystem Whats living? Whats non-living?

Slide 7

Biodiversity Biodiversity: the variety of species in an ecosystem. Watch Natures Microworlds and see the amazing diversity of life on Earth!

Slide 8

An ecosystem is made up from different parts: Community Habitat Population Components of an Ecosystem

Slide 9

Habitat A habitat is the place where an organism lives.

Slide 10

What habitats are in this ecosystem?

Slide 11

Population In an ecosystem, a group of organisms made of one species is called a population. How many can you get right?

Slide 12

A population of dolphins...a school of dolphins

Slide 13

A population of sheep...a flock of sheep

Slide 14

A population of crows...a murder of crows

Slide 15

A population of lions...a pride of lions

Slide 16

A population of geese...a gaggle of geese

Slide 17

A population of ants...an army of ants

Slide 18

(My fave) A population of hodgehegs...a prickle of hodgehegs

Slide 19

Community A community is all the living organisms together in an ecosystem. This means that: Community + Habitat=Ecosystem

Slide 20

Find a habitat, a community and a population in this ecosystem

Slide 21

Slide 22

Components of an Ecosystem WordMeaningExample Habitat Population Community Ecosystem H______ + C_________ = ______________

Slide 23

Identifying Ecosystem Components Pond Ecosystem Glue In:

Slide 24

Identifying Ecosystem Components Think What are three habitats in this ecosystem? How do the communities in these habitats differ? Why are organisms restricted to their habitats?

Slide 25

Biotic and Abiotic Factors Many factors can have an effect on ecosystems. Biotic factors factors relating to living things, e.g. predation, competition. Abiotic factors non-living factors which affect an ecosystem, e.g. temperature, pH

Slide 26

Biotic or Abiotic? Light intensity Temperature pH Moisture Predation Grazing Disease Food availability

Slide 27

Biotic or Abiotic? BioticAbiotic

Slide 28

Research an Ecosystem You will be allocated an ecosystem card. Your role is to find out the answers to the questions on the card. Prepare to produce a team poster about your ecosystem.

Slide 29

One stay, two stray When listening to the presentations, find out; The temperature and rainfall expected in this ecosystem. An example of a plant and animal found there. A human influence affecting that ecosystem.

Slide 30

Why can these birds all live happily on the Galapagos?

Slide 31

Ecological Niche A niche is the role an organism plays in its ecosystem. This includes where it lives and breeds, what it feeds on, and what feeds on it

Slide 32

Slide 33

Did these animals come from one species or two?

Slide 34

What is the best definition of a species? 1.A group of animals that can interbreed 2.A group of organisms that can have offspring of their own 3.A group of organisms that can interbreed to produce fertile offspring 4.A group of organisms that have characteristics in common

Slide 35

Now try Wordbank WYSK

Slide 36

Bingo! Ecosystem Biome Habitat Community Population Biotic Biodiversity Abiotic Species Ecological Niche