topic 6.3.2: populations and sustainability

Question 1

what is carrying capacity

Answer 1

max population that can be supported by an environment

Question 2

what are abiotic factors

Answer 2

non-living components of an environment eg light, temp, soil ph etc

Question 3

what is interspecific competition

Answer 3

members of different species compete for the same resource

Question 4

what is intraspecific competition

Answer 4

members of same species compete for resources and mates

Question 5

describe a predator prey graph

Answer 5

prey will always be higher and will always change before predator

Question 6

what is conservation

Answer 6

human management to maintain biodiversity through sustainable development

Question 7

what is preservation

Answer 7

protecting an area by banning visitors

Question 8

how is timber production sustainably managed

Answer 8

coppicing- trunk cut close to ground so new shoots can form
pollarding- trunk cut higher to prevent animals from eating

Question 9

how is fishing managed sustainably

Answer 9

limits on fish quantity and size, restrictions on what can be caught at what time of year

Question 10

how is the masai mara in kenya managed sustainably

Answer 10

local tribes not allowed in parks so animals grazed on outskirts, ecotourism, legal hunting

Question 11

how is the terai region in nepal managed sustainably

Answer 11

sustainable forest management so livelihood is provided while protecting env, crop rotation, improved irrigation, nitrogen fixing crops

Question 12

what are peat bogs and how are they sustainably managed

Answer 12

wet carbon sinks containing decomposing plant matter
goof fuel source but releases carbon
soil kept wet and small trees removed