Measuring Biodiversity Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what's on both sides.
  • Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What does it mean to measure biodiversity in a habitat?

It means finding out how many different species live there and how many of each species there are.

What is species richness?

Species richness is the number of different species in an area.

What is meant by the abundance of a species?

Abundance is how many organisms of that species are found in the area.

How can you tell which of two habitats has higher biodiversity?

The habitat with more different species and a more even spread of individuals has higher biodiversity.

What is a sample in ecology?

A sample is a small part of a habitat that is studied to represent the whole area.

Why do scientists usually take samples instead of counting every organism in a habitat?

Counting every organism would take too long and be too hard, so samples are used to give an estimate.

Why should samples be taken randomly when measuring biodiversity?

Random sampling reduces bias and makes the results more fair and accurate.

Why is it important to take many samples when measuring biodiversity?

Taking many samples makes the results more reliable and closer to the true values for the habitat.

Why should the same sampling method be used when comparing biodiversity in two areas?

Using the same method makes the comparison fair, because the data are collected in the same way.

What is a biodiversity index in simple terms?

It is a single number that sums up how many species there are and how evenly they are spread.

How can scientists use biodiversity measurements over time?

They can compare results from different years to see if biodiversity is increasing, decreasing or staying the same.