Amazon rainforest - South America
- Created by: maya
- Created on: 27-05-16 10:13
History
World's largest tropical rainforest
Covers 40% South American landmass
one of most biodivewrse places on earth home to
1 million plant species
2000 species fish
home to many endangered species- pirarucu (fish) Amazonian manatee (aquatic animal)
& black caimon (reptile)
2 threats to ecosystem
Two main threats
Deforestation:
single biggest threat- 13% original forest been cleared
reasons for deforestation- mining, logging and subsistence agriculture contribute
BUT... biggest problem is cattle ranching
cattle ranching responsible for < than 60% of all deforestation 2000- 2005
Impacts of deforestation wide
In Amazon been problems with increased forest fires & soil erosion
+ > biodiversity caused by habitat loss
2nd threat - over-hunting and over-fishing
Most local people live traditional lifestyle - rely on hunting, fishing, foraging & small-scale farmingg food.
Population growth recent years caused increase in subsistence hunting, fishing by local people
Hunting primates bushmeat big problem
Brazillian rainforest local people consume up to 5.4 million primates per year
This is unsustainable - primates reproduce slowly - many species endangered
Loss of ceretain species- knock on effect other species
Background to management- Amazon rainforest
The Central American Conservation Complex is in the Brazilian Amazon
Central Amazon Conservation Complex established 2003
Aims:protect biodiversity of area & maintain various ecosystems
Allow local people to continue using forest for livelihood- sustainable way
Complex covers area 49000km2
Managed by several organisations- Brazilian Institute of the Environment & Natural Resources
(IBAMA), local gov, research institutes & mining + tourism industries representatives
Management approach uses number of schemes
to try to balance conservation and sustainable development
Management Strategies- Amazon rainforest
Complex divied into zones - total protection, buffer zones, sustainable use, rehabillitation and experimental use. Acitvities within these areas strictly controlled:
1) areas of total protection- heavily restricted only researchers & authorised visitors wlloed in Jau Nartional Park 2) Areas of sustainable use- quotas to limit logging, hunting & fishing
Two sustainable development rserves (SDRs) created where hunting & logging only allowed - subsistence + limits numbers of animals & fish that can be caught
Economic Alternative Programmes set up- sustainable shemes ran by local people - receive direct income from work- communities involved in fisheries management, ecotourism, sustainable agriculture & handicraft prodcution.
Fibrarte Project = supports local people- natural fibres- handicrafts- which they can sell
Projects set up- increase community involvement- conservation. Mamiraua 60 communities take part- monitoring wildlife.// Local representatives meet every 2 months - local gov & NGOs discuss ways of managing evnrionment & conserving biodiversity.
Successes of management strategies- Amazon rainfor
Sustainable Development initatives been successful
Creation of conservation complex- protected surrounding area from major developments - might have impacts CACC - no dams, pipelines mines or commerical logging activities
& currently none planned - future
SDRs improved biodiversity. Populations key species increased
- since creation CACC black caimon popuation increased 100%
- piracuru fish popuation increased over 300%
Economic Alternative Programmes promote sustainable activies & > poverty
Average household income increased by up to 99% in some areas
Local farmers & craftmen belong to producer's associations- means can sell good directly to buyers rather than trading through 'middle men' who charge comission.
Successes of management strategies cont... Amazon
Ecoutourism provides source of income- locals & promotes conservation
Mamiraua low environmental impact ecoutourism lodge built recycles waste & uses solar power
-Lodge brings jobs & money to local community
- invests money into conservation and community projects
Local education & health improvement projects been successful
Local people trained- health workers & better rainwater collection technology
-means local communities access 2 clean drinking water.
These changes improved QoL - local population shown by 54% drop infant mortality
80 local school teachers trained educate children about environment
As a result 1800 children had classes - conservation
Drawbacks of management strategies- Amazon
Reserves are large & understaffed - difficult monitor + control illegal activities e.g. hunting
150 people employed in Amana and Mamiraua reserves & 100 volunteer guards
BUT < volunteers needed- cover large area effectively
Restricting access to areas of total protection - v difficult because
1) size of the zones 2) limited numbers of staff.
Jau National Park only 4 permanent staff - poaching fish & turtles still a problem
26 volunteer guards been trained- MAY improve situation
Population growth - areas - puts stress ecosystems & some areas suffer intensive fishing
- & hunting especially monkeys + manatees
Population growth around area = deforestation around edges CACC continues :(
= habitat loss & fragmentation (forested areas split up so animals can't move in between them)
+ makes complex < accessible - increases risk of illegal overhunting & overfishing in complex
Related discussions on The Student Room
- A Level Geography Edexcel 18/20/24 markers »
- Geography NEA »
- 25 mark essay question »
- TSR Goes Green: Careers in the Environmental Sector »
- Geography NEA help »
- Competition of Organisms »
- OCR A-Level Biology A Paper 2 (H420/02) - 14th June 2024 [Exam Chat] »
- Advanced Higher Biology Project Ideas »
- Can someone please mark my 9 mark question for the 2023 Geography paper 3 exam? »
- Can someone please mark my 9 mark question for the 2023 Geography paper 3 exam? »
Comments
No comments have yet been made