Ecosystems Flashcards

1
Q

What is the climate like in High altitude areas

A

Cold
Thinner air

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2
Q

What is the soil like in high altitude areas

A

Frozen

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3
Q

How does a very cold climate in soil impact plants?

A

Slows growth
Low biodiversity

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4
Q

What are plants like in high altitude areas?
Deciduous/coniferous??

A

Coniferous

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5
Q

Define large-scale ecosystem

A

A biological community of interacting organisms and their physical environment on a large scale

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6
Q

State two characteristics about the boreal forest ecosystem

A

Very cold winters
Coniferous trees
Rainfall less than 500 mm per year
50 to 60° north/south
Rising air (low-pressure)

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7
Q

State two characteristics of temperate forest ecosystems

A

Rainfall about 1000 mm per year
Deciduous trees
40 to 60° north/south

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8
Q

Moorland

A

Found in Highland areas
With heavy rainfall
E.g. North Yorkshire

Soils are acid and peaty
Only certain plants can survive e.g. Bracken and Birds such as grouse

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9
Q

Heathland

A

Found in lowlands
Such as the Gower in Wales

Dry, sandy soil
Small shrubs, like gorse
Animals such as hares

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10
Q

Woodland

A

Oak and Ash trees
Broadleaf deciduous trees
Can be plantations of conifers in Upland areas

Mainly trees
Moss grows under trees
Animals deers badgers
tawny owls

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11
Q

Wetland

A

Ponds and streams to rivers
Eg the fens

Peaty fertile soils
Occasionally waterlogged
Lots of reeds and bulrushes
Otters

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12
Q

Marine systems
- value

A

Provides
energy
food
Habitats
attraction - good for economy

New jobs

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13
Q

Marine ecosystems
- degraded

A

Overfishing

Construction- wind turbines - cables
Smothered habitats - sea bed

beeches flooded with sewage

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14
Q

Biotic definition

A

Living organisms in an area
Plants
Animals
(Decomposers)
Humans
Etc

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15
Q

Abiotic definition

A

Physical non living environment of an area
Climate
Soil
Water
Light

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16
Q

Where is the tropical rainforest located

A

Around 0°
Either side of equator
Between 23.5°N (tropic of cancer)
And 23.5°S (tropic of Capricorn)
In:
Central America
Africa
Asia
Austrilasia

17
Q

Where are deciduous woodlands located

A

Between 40°N and 65°N of the equator in:
North America
Europe
Asia

18
Q

Temp and rainfall in d woodland

A

Less steady temp - hottest in summer

Steady rainfall ≈50mm

The high altitude location of the deciduous woodland causes its climate to be seasonal with a large range of temperature. This is because of the earths tilt causing different amount of solar energy throughout the year, making seasons e.g. summer winter.

19
Q

Temp and rainfall in t rainforest

A

Steady high temp ≈ 27°

Less steady rainfall - least in summer

They are located along the equator, which means the suns rays are concentrated so less variation
Some rainforests have dryer seasons due to the Inter tropical conversion zone (ITCZ) moving due to the earths tilt

Band of low-pressure – hot high rainfall

20
Q

Biomass size
Deciduous versus tropical rainforest

A

Deciduous
Warm summers inconsistent Wayne, long hours of daylight in summer most growth occurs in spring and summer

Tropical rainforest
There is a huge biodiversity because it’s both hot and wet all year round

21
Q

Soil size
Deciduous versus tropical rainforest

A

Deciduous
Nutrients flow freely between the stores decomposition occurs in autumn providing nutrients to the soil. Not much meeting occurs with rain is not intense earthworms mix in the nutrients, deep tree roots help break down rocks

Tropical rainforest
The nutrients in the soil it taken up quickly by the large number of plants, or they are washed away, but I have a heavy rainfall

22
Q

Leaf litter size
Deciduous versus tropical rainforest

A

Deciduous
Trees lose their leaves in the autumn, and they are broken down into the winter in wet conditions

Tropical rainforest
The climate (hot and wet) provides an ideal environment for decomposers, which led to rapid rate of decomposition. Heavy rain may wash leaves away

23
Q

Tropical rainforest
Roots
Biodiversity

A

Shallow roots
Quick nutrient cycle
Shallow soil

More biodiversity
Variety
Habitats for species
Four Layers.

24
Q

Layers in TRF

A

Emergents
Main canopy
Under canopy
Shrub later
(Ground level)

25
Layers in d woodland
Canopy layer Sub-canopy layer Herb layer (Ground level)
26
Impacts of climate change On tropical rainforest
Trees cut down, means less rainfall means less transpiration from leaves Climate change means less rainfall means higher temperatures species, go, extinct, food, chains are broken, less biodiversity Less trees, less carbon storage, less water cycle, no more habitats, impacts tourism, which impacts economy Causes Social growing population means more buildings and infrastructure needed Economic using natural resources to generate income
27
Impacts of climate change on deciduous woodlands
No major impact Fast entry price trees live long can adapt Storms, unstable, drought means less water forest fires, are more susceptible to disease Mild winters fruiting in flowering disrupted pests and diseases, not killed by frost Species will have to move North by 300 km for heat some species under threat, for example, plants, like bluebells, disrupts complex, food, webs of ancient woodlands Cauzes Social population growth demand for land and food Economic - need for timber
28
Social and economic causes of deforestation Tropical rainforest Agriculture
Cleared for our culture – which soil is that can support lush vegetation Theresa Feldon burned as nutrients to the soil After a few years, lots of fertiliser needed to produce high yields, which is less profitable. The first flight is going to be causing, eutrophication their abandoned or left to cattle ranches. Some flood plane land can be used for growing cash crops, although it's risky for disease spread
29
Social and economic causes of deforestation Tropical rainforest Resource extraction
Governments like Brazil sold rights to minerals in the rainforest to raise money to develop the country. However, the indigenous inhabitants were really consulted, causes disagreements because they believe they own the land of the government doesn't have the right to grant minarets two large companies. Cleared for large-scale mining operations and access to roads and settlement workers to live
30
Social and economic causes of deforestation Tropical rainforest Population pressure
Timber is being felt for use as fuel and building materials would increase of deforestation as more resources are needed
31
Deforestation definition
The cutting down or removal of all, or almost all of the trees in a forest area
32
Social and economic causes of deforestation Deciduous woodland Agricultural change
Economic Higher demand for land to be used for agriculture Hi, deforestation rate because land needed because there are more people
33
Social and economic causes of deforestation Deciduous Woodland? Timber extraction
Off the wall there is a short supply, only 5% of the UK forest remained in 1919. This led to the government set up the forestry commissioN
34
Social and economic causes of deforestation Deciduous woodland Urbanisation and population growth
I demand for resources like food growth in urban areas for people to live caused the removal of more of the native forest
35
Biotic characteristics and adaptations Canopy trees
TRF Buttress roots, give them stability, nutrient store Trees in canopy have small leaves to prevent water loss to transpiration Deciduous woodland In Spring Grove, lightweight leaves, captures sunlight grow quick exposed surface area for code loses leaves
36
Biotic characteristics and adaptations Forest floor
Tropical rainforest Plants on Forest floor large leaves, lack of light Deciduous woodland Flower, early in the year before trees above can block out light
37
Biotic characteristics and adaptations Animals
Tropical rainforest Toucans live in canopy, long beaks, which fruit on small branches Sloth lives in canopy camouflage still in branches can't be seen Chameleons camouflage, pray can't see them Deciduous woodland Hedgehogs hibernate code once slow heart rate and breathing survive on body fat Nightingale migrates to Africa to avoid cold months with little food Squirrel store feet underground in colder months. Food is still available.