Lecture Three - Concept of Community Flashcards Preview

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Flashcards in Lecture Three - Concept of Community Deck (18)
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1
Q

What are the problems with the Tintwistle Bypass?

A

It would pass through valuable ecological habitat.

2
Q

What are JNCC?

A
  • Nature Advisors

- Produce classification guides, e.g. National Vegetation Classification

3
Q

What is the National Vegetation Classification?

A
  • Assigns vegetation to a community
  • Based on phytosociology (the plants that are living together)
  • Gives descriptions of communities
4
Q

What is W11?

A
  • Woodland 11

- Oak-birch-wood sorrel woodland

5
Q

What is W12?

A
  • Woodland 12
  • Beech-dog’s mercury woodland
  • Contains species characteristic of base-rich soils.
6
Q

What is the role of a Phase 1 Habitat Survey?

A

Assigns areas to habitat sites.

7
Q

What is W19?

A
  • Woodland 19

- Ash-Rowan-Dog’s mercury woodland

8
Q

Name the unit given to describe association.

A

Braun-Blanquet’s unit

9
Q

How are associations grouped?

A

In higher or lower taxa:

  • Alliances
  • Orders
  • Subassociations
10
Q

What did Karl Möbius study?

A

Studied oyster banks to determine their potential for commercial exploitation.

11
Q

What is a biocönose?

A

A social community

12
Q

What did Karl Möbius conclude/discover?

A

That each oyster bed is a biocönose (social community)

13
Q

What did Frederick Clements study?

A
  • The development of vegetation / plant succession / climax community
14
Q

What is Physiognomy?

A

Outward appearance

15
Q

What did Frederick Clements say that the cause of stabilisation in plant succession is?

A

Dominance

16
Q

Give a experimental method of measuring the magnitude of interactions.

A

Through
- Target, e.g. Arabidopsis
- Interactor, e.g. Garden slug
Add interactor to population that didn’t have the interactor to start with, and measure the change in target abundance.

17
Q

Give the equation used for measuring interaction strength.

A

[ ( E - C ) / C ] x 1 / d

E = abundance of target species in experimental plot
C = abundance of target species in control plot
d = abundance of the 'interactor'
18
Q

Describe Robert Paine’s experiment.

A
  • Grazer enclosures made by rings of Poxy Putty painted with copper-based paint.
  • to estimate interaction strengths