Ecological Population Estimation Methods

Ecological Population Estimation Methods

Assessment

Interactive Video

Biology, Science, Mathematics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains three methods for estimating population size in ecology: the quadrant method for non-motile organisms, the transect method for observing changes along a line, and the mark and recapture method for animals. Each method is detailed with examples and formulas, emphasizing the importance of assumptions like no migration or excessive birth/death rates during the study period.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is estimating population size important in ecology?

To determine the number of predators in an area

To measure the temperature of a habitat

To understand the biodiversity and health of ecosystems

To calculate the amount of food available

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the quadrat method primarily used for?

Studying animal migration patterns

Estimating population size of motile organisms

Measuring the height of plants

Estimating population size of non-motile organisms

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the transect method, what is typically studied along a line?

The speed of animals

The number of organisms

The color of flowers

The depth of soil

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method involves counting organisms along a line to study changes with elevation?

Aerial reconnaissance

Mark and recapture method

Transect method

Quadrat method

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is suitable for estimating the population size of animals?

Quadrat method

Transect method

Aerial photography

Mark and recapture method

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the variable 'M' represent in the mark and recapture formula?

Size of the sample

Number of recaptured organisms

Number of marked and released organisms

Total population size

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a key advantage of the mark and recapture method?

It is unaffected by animal behavior

It is only suitable for large animals

It can be used in any habitat

It provides exact population numbers

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