Effects Of Urbanisation

Question 1

Explain habitat in terms of urbanisation

Answer 1

Straightening of channels increases velocity

Question 2

Explain chemistry in terms of urbanisation

Answer 2

Increased surface run off may lead to pesticides leaking into the river

Question 3

What is an urban niche?

Answer 3

Found within an ecosystem, a place where a species lives and how they interact with others

Question 4

Where can flora colonise?

Answer 4

Bare Tarmac, brick walls, roofs etc

Question 5

What factors affect the ability for a plant to colonise wasteland?

Answer 5

Slopes, moisture availability, aspects (compass facing) and surface roughness

Question 6

Why is clover so important for colonisation?

Answer 6

Has the ability to fix nitrogen, when they die they create nitrogen rich soil for other plants

Question 7

What difficulties does flora and fauna have whilst colonising?

Answer 7

Many habitats are isolated, plant roots often encounter physical barriers, pollution levels may be too high and large areas of impermeable rock

Question 8

Explain one non-native species that has proposed a threat due to colonisation

Answer 8

Japanese knot weed - shipped from Japan in the 1800’s and accidentally distributed, native species cannot grow due to the lack of sun

Question 9

Explain hydrology in urban development

Answer 9

Urban development increases the volume of water entering the stream