B4 - Ecology In The Local Environment

Question 0

What two types of ecosystems are there?

Answer 0

Natural

Artificial

Question 1

What’s an ecosystem?

Answer 1

A physical environment with a particular set of conditions plus all the organisms that live in it

Question 2

Explain a natural ecosystem?

Answer 2

High biodiversity (many different species live in them)

Question 3

Explain artificial ecosystem and give examples?

Answer 3

Low biodiversity as they’re made for a specific purpose

Greenhouse

Question 4

What causes low biodiversity?

Answer 4

Weed killers, fertilisers, pesticides

Question 5

What’s a habitat?

Answer 5

A part of a physical environment where a plant or animal lives

Question 6

What’s a community?

Answer 6

The total number of individuals of all the different populations of plants and animals that live together in a habitat at any one time

Question 7

What a population?

Answer 7

The total number smog individuals of the same species that live in a certain area

Question 8

How are ecosystems self supporting?

Answer 8

They provide mates;)
Shelter
Food - They all rely on a energy source (the sun) and producers at the bottom
Of the food chain

Question 9

Name 4 sampling methods

Answer 9

Pooters
Sweepnets
Pitfall traps
Quadrats

Question 10

What’s a pooter?

Answer 10

A container used to collect insects easily without harming them

Question 11

What’s a sweepnet?

Answer 11

A net used to collect insects in long grass/woodlands

Question 12

What’s a pitfall trap?

Answer 12

Containers set in the ground that insects fall into

Question 13

What’s a quadrat?

Answer 13

Square frames that are used to count a smaller representative part of a population

Question 14

What must you do when sampling?

Answer 14

Make sure the sample is big enough

Make sure you sample randomly

Question 15

What is capture recapture (AKA Lincoln index)?

Answer 15

Trap is used to catch a sample of individuals
Sample is counter and marked
Samples released back unharmed
Another sample is collected 
Sample is counted

Question 16

Population size = ?

Answer 16

= (no. In first sample x no. In second sample) / no. In second sample which were previously marked

Question 17

What are kite diagrams used to show?

Answer 17

Zonation - the gradual change in the distribution of species across a habitat