week 9

Question 1

What is a landscape/seascape

Answer 1

A mosaic of habitat patches of varying shapes and sizes with different levels of connection between habitats

Question 2

What are landscapes metrics

Answer 2

Patch area - Shape - Connectivity/Isolation

Question 3

What is Patch area in landscapes metrics

Answer 3

Proportion of total area for each habitat/patch

Question 4

What is Shape in landscape metrics

Answer 4

Shape of the patch, distance of its perimeter (Larger in linear than curvilinear shapes).
These determine migration between patches

Question 5

What is connectivity/isolation in landscape metrics

Answer 5

Connectivity/isolation of patches - Minimum distance between patches - how isolated patches are from each other

Question 6

Why is spatial scales an important feature

Answer 6

They define the bounds of the landscape and resolution aiding in ecological studies of pattern and process

Question 7

What are the important elements of landscapes

Answer 7

Patch = An area of relatively uniform habitat 
Edge = The outer boundary of a habitat 
Connectivity = How patches of same habitat are connected

Question 8

What is the hypothesis of impact of fragmentation

Answer 8

species Increases with patch area
Population abundance increases with patch area
Small patch area = High mortality + low reproduction due to greater disturbance

Question 9

What are the 6 stages of development in fisheries with no regulation

Answer 9

1 Pre-development - 2 Growth - 3 Fully exploited - 4 Over exploited - 5 Collapse - 6 Recovery.