Lecture Three - Concept of Community Flashcards Preview

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

What are the problems with the Tintwistle Bypass?

It would pass through valuable ecological habitat.

2

What are JNCC?

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

3

What is the National Vegetation Classification?

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

4

What is W11?

- Woodland 11
- Oak-birch-wood sorrel woodland

5

What is W12?

- Woodland 12
- Beech-dog's mercury woodland
- Contains species characteristic of base-rich soils.

6

What is the role of a Phase 1 Habitat Survey?

Assigns areas to habitat sites.

7

What is W19?

- Woodland 19
- Ash-Rowan-Dog's mercury woodland

8

Name the unit given to describe association.

Braun-Blanquet's unit

9

How are associations grouped?

In higher or lower taxa:
- Alliances
- Orders
- Subassociations

10

What did Karl Möbius study?

Studied oyster banks to determine their potential for commercial exploitation.

11

What is a biocönose?

A social community

12

What did Karl Möbius conclude/discover?

That each oyster bed is a biocönose (social community)

13

What did Frederick Clements study?

- The development of vegetation / plant succession / climax community

14

What is Physiognomy?

Outward appearance

15

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

Dominance

16

Give a experimental method of measuring the magnitude of interactions.

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

Give the equation used for measuring interaction strength.

[ ( 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

Describe Robert Paine's experiment.

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