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Causes and consequences of reduced biodiversity in tropical rain forests

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Causes and consequences of reduced biodiversity in tropical rain forests Mongabay Causes of loss of biodiversity in Amazonian due to deforestation Clearing for cattle ... – PowerPoint PPT presentation

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Title: Causes and consequences of reduced biodiversity in tropical rain forests


1
Causes and consequences of reduced biodiversity
in tropical rain forests
2
(No Transcript)
3
(No Transcript)
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Mongabay
5
Causes of loss of biodiversity in Amazonian due
to deforestation Clearing for cattle pasture
Colonization and subsequent subsistence
agriculture Infrastructure improvements
Commercial agriculture Logging Explain each
of the causes using the following
resource Mongabay Why is the rainforest being
destroyed? http//rainforests.mongabay.com/amazon/
amazon_destruction.html http//news.mongabay.com/2
008/0801-amazon.html
6
Consequences of loss of biodiversity
7
Explain using diagrams the effect of
deforestation on the nutrient cycle. (loss of
biomass)
Nagle Advanced Geography - 212
8
Explain the environmental and socioeconomic
effects of loss of biomass and habitats. (Indigeno
us cultures, potential resources)
9
Explain how loss of rainforest effects the water
cycle.
Interception
This is very important for the whole of Brazil,
as winds from the rainforest bring rain down onto
the agricultural heartland in the south.
10
Explain the effect of climate change on
rainforests using this diagram. Explain the
effect on climate change of rainforest drying and
converting to savannah and the potential tipping
point.
Also watch The day the oceans boiled
11
The Atlantic Forest, Brazil A lesson for
Amazonia
Only 8 of its original extent remains and its
under constant threat from urbanisation.
Pressure from illegally built housing and the use
of resources from the forest such as timber for
fuel and construction
Its present day area covers 99,944km2 and over
50 of this is protected
Unesco World Biosphere Reserve in 1992
1300 vertebrates (500 endemic)
20000 plants (6000 endemic)
Atlantic Forest
950 bird species (55 endemic)
458 tree species found under 1 hectare
269 mammals
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