Eco-system
- Created by: Freya Woolley
- Created on: 14-05-15 16:02
Case Stud- Temp. Dec. Woodland- Epping Forest
Where: NE greater london and essex
19km long North to South
4km wide
2,476 hectares
Lies on ridge between 2 river vallies- the lea and the Rodding
Case Study- Epping Forest- Function
Royal Forest from 12th Century
1882- dedicated by Queen Victoria to be 'The people forest'- managed by the city of london co-orporation
Now combines the role of scenic open space, important wildlife hbitat and recreational opportunities
Case STudy- Epping Forest- Physical Characteristic
Ancient woodland, grassland, river, bogs and bonds
Woodland is mainly Beech trees with some Oak and hornbeam
Supports variety of wildlife:
- Trees nesting sited for 48 species of birds eg. nightingale
- Dead rotting wood- for stag beetles
- Bogs and ponds habitat of wild fowl eg. mallards and moorhens
- Grassland and trees home to grey squirrels, rabbits and fallow deer
Typical mild climate of NW Europe- warm damp summers and cool wet winters
Case Study- Epping forest- Human Characteristics
Lots of footpaths for those wit limited mobility
50km of rides for horse riders and cyclists
60 football fitches
18 hole golf cource
field study centres
serveral pubs and cafés
Historic building eg. Queen Elizabeth Hunting Lodge (1543 by henry 8th)
Car parks
Case Study- Epping forest- Use of woodland
Active Recreation: Walking, mountain biking, horse riding, fishing
Passive Recreation: Beautiful forest lots of seating, Jubilee pond 2002- picnics
Education: 3 forest centres eg. Epping forest field studies centre runs weekend cources and day cources on a range of natural history topics
Information centre
Organised Sport- football golf
Camp and caravan sites
Case Study- Epping forest- Management
Pollarding-
- cutting trees at shoulder height above level of animals (trees continues to support insects and mosses)
- Trees reshoot producing new wood for future cutting ensures supply of wood for future
- Since 1981 over 1,000 trees have been pollarded to preserve them- without it crowns become top heavy and slit or topple
Grazing-
- encourage grazing- maintain grassland- adds manure to soil- helps maintain some herbaceous plants- increases diversity of plants- food chain
- If no grazing dormilant species like brambkes take over shading the soil- bluebells can't grow
Allowing old trees to die
- Rots adding nutrients to the soil for future growth of trees
Case Study- Epping forest- Sustainable practices
Conservation
- 2/3 of the park had been designated a site of specual scientific intrest and a SCA 1600ha
- Potects biodiversity under law, acient trees flora and flava are supported (500 rare insects)
Provison of amentities and footpaths
- Car parks, toilets, refreshment facilities and footpaths are managed for recreation- forest centres and lodges
- Foot paths and car park link to emenities encouraging visitors to use official footpath
Recreation
- The view is the visitor centre with interactive displays. High beach forest centres gives info- cources on natural science and geography
- Horse riders have to be registered- schools need a license- mountain biking kept away from ecologically sensitive areas
Historical Heritage
- Elizabethan manour 1543- hunting lodge- preserves culture and historical value
Case Study- The Amazon- Reasons for deforestation
Road building- Trans Asmonian highway 1970s
Slash and burn- Traditional famer eg. Boro practicr shifting cultivation- clear small area and farm- burn- use ash as fertilisier- move on soil infertile no leaf litter- return in 20 years
Commercial Ranching- areas cleared for cattle grazing-350 ranches
Logging- commercial logging of hard wood trees like mahogany- solf furniture
Mineral Extraction- mining- Carajas- iron ore
Population pressure
Case Study- Amazon- Rainforest Management
Selective Logging- 7-12 trees per hectare can be felled- need licence- machinery restrictesd
Forest Protection- Malaysian Government- Peranent Forest estates which are given special conversvation status
Ecto-tourism
Reducing debt
Replanting
Reducing demand for hardwoods
Education- Make company bosses and Politicians more aware of how forests work
Deserts
Found in a belt 30 n/s of the equator on the western coats of continents where air has risen then descends forming a belt of high pressre- Lack of rain and cloud
Hostile environment- Rainfall between 120-240mm/yr
July temp up to 53c
Frequent droughts
Thar- Rajasthan- India
Stretches across NW india to Pakistan
200,000km2
Case Study- Thar desert- soil
Generally sandy- not very fertile because little organic matter to enrich them
Soil drains quickly so is little surface water- high levels of evaporation
Case Study- That- Adaptations
Plants:
- Expandable Stem: for storing water eg. Saguaro
- Thick waxy coating- protects tissue from intense heat and light
- Small leaves- reduce water loss- smaller surface area
- No leaves- less water loss
- Dense hairs- less water loss
- Dormant seeds- short period of growth
- ground hugging protects against wind- compact and low- stable
- Shallow roots- trap water as soon as it rains before it evaporated
- Succulent leaves- stores water- prickly pear cactus
- Long roots- trap water from the water tablee
- Short growing season- Mexican poppies grow only when rain falls
- Grown far apart- not competing for resources
- Detatchable root system- tumble weed- can move to areas of water so release seeds and germinate
Animals
- Camel- flat feet- spread weight on sand. slit nostrels keep sand out
Case Study- Sonoran
Arizona/ californa stretching to Mexico South West USA
Vegetation
Saguaro Cactus- Outside sin is pleated so it can expand when water is soaked up. Roots close to surface so that can soak water before it evaporated
2000 species of plants
Case Study- Sonoran- Opportunities
Tourism- dry, sunny weather and scenery
Commercial farming- using irrigation from underground aquifiers
Mining- copper, uranium, lead, zinc and coal
Retirement
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