Showing posts with label Dessertification. Show all posts
Showing posts with label Dessertification. Show all posts

Friday, November 6, 2020

Why Ancient Woodlands are so valuable?

Ancient woodlands are wooded areas that have been covered in the same native woodland cover since 1600 AD. These habitats are irreplaceable due to the many years of the native fauna  to evolve to the composition of these habitats to take full advantage of the many niches up for offer. 

These habitats compose of just 2% of the UK's landscape and so provide a unique habitat which provide the UK with photogenically rare fauna that are severely vulnerable to any disturbances and so the niches that don't overlap between the generalists will die along with the species. 

Half of all of the UK ancient woodlands, are severely degraded and in serious need of restoration. Instead, much of these forests are being replaced with non-native conifer plantations with little differentiation between species variation. These plantation pose little ecological benefit where it is shown these transformations reduces biodiversity in the native bird, reptile, and mammal species where the rare species are the most vulnerable due to their incapability to adapt and take up new niches. 

Although, restoration won't be capable of completely restoring the conservation value of the fully intact ancient woodland, if serious degradation/ destruction has occurred restoration is the best to do to mitigate the carbon emission and to provide a form of support for the surrounding biodiversity. These restoration programmes display varying results with the common denominator being the planting of photogenically distinct native flora to provide adequate supports for rare species as well as improving the multifunctionality of the woodland.

 Ancient Woodland - British Habitats - Woodland Trust

Tuesday, May 26, 2020

The Amazon's on fire!!!!!!!!

New study shows the Amazon makes its own rainy season – Climate ...
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This blog has been inspired by the postponement on a vote for a bill which would allow for the destruction and deforestation of this ecosystem. Much pressure has been pressed by the public, members of parliament and international companies. The world is now keeping an eye on this piece of legislation and hoping they place the world's well-being over short-term economical benefits.
https://climate.nasa.gov/news/2608/new-study-shows-the-amazon-makes-its-own-rainy-season/

About 20% of the Amazon has already been destroyed for grazing of livestock, growing crops for the livestock  opening up Brazil to establish more urban centers away from the coast and obtaining resources ie palm oil. It is expected there will be an overall 27% removal of the rainforest within the next 10 years. The Amazon rainforest plays a vital role in the water cycle for the Amazon region and for the entire continent of South America. Hypothetically if the entire rainforest had been cleared it is likely this region would become an arid region, prone to fires and struggle to grow viable crops. The trees in this forest acts as a biotic pump which releases transpiration creating water vapor which will then cool and condense. This condensation reduces the air pressure that creates a vacuum where the evaporated water from the Atlantic ocean is pushed in the direction of the Amazon. As the vapor (clouds) drifts along the west of the continent it drops water along the continent and releases the remainder of the water droplets once it reaches the Andes mountain (relief rainfall). This relief rainfall is then collected and stored by the vegetation of the Andes with the rest entering rivers where they flow through the continent where most of the rivers flow back out to the east of South American coast where it begins this water cycle in the Atlantic ocean. A single oak tree transpires 40,000 gallons of water vapor per year so due to the intensity of the trees in the Amazon rainforest it is commonly compared as a flowing river in the sky. This rainforest creates it's own climate which will be eternally eliminated in the South American continent if the Amazon rainforest is completely cleared. 10-15% of all global atmospheric water is available due to forests. It's been predicted by Princeton University that there will be a decrease in precipitation in the Americas if deforestation continues. It's also predicted that the complete removal of the Amazon rainforest could lead to a decrease in precipitation at a magnitude of a 50% decline in rainfall as far up as the Sierra Nevada. The increase in fires created in the US and Canada seen in recent years is expected to be caused by the 20% of rain forest already destroyed.
No Trees Means No Rain - American Forests
https://www.americanforests.org/blog/no-trees-means-no-rain/

The Amazon rainforrest is also responsible for temperature regulation for the South American continent through the storage of a trillion tonnes of carbon with 31% of this carbon stored within the biomass of the trees (leaves) which would be released through an increase in deforestation. These forests also regulate the temperature within it's region as it creates clouds through transpiration.  These clouds (especially white clouds) reflects the sunlight wavelength which reduces the temperature and decreases the risk of desiccation of South American soils and vegetation. This decrease in rainfall and increase in temperature (evaporation) will likely lead to the inaccessibility of drinking water and establishment of unsuitable conditions for much of the vegetation (crops). It is likely there will be growth of pioneer species (fast growing, tolerant plants) with most unsuitable for crop production and a scarcity of vegetation to sustain the population in South America.

In conclusion, if deforestation continues the soil will lose it's fertility and so if grazing of livestock is desired receding of the rain forest will need to be done which will result in desertification turning this continent into a 3rd world region with insufficient levels of crops and drinking water. Tourism is also sure to reduce as a result and fires will become a more common occurrence which will constantly destroy any remnants of their economy in South America. Although, it may benefit Brazil to open up the Amazon rain forest to profit from urban centers and agriculture, the further destruction will create devastating effects to Brazil in the long term and likely to harm nations outside of South America. I believe it is likely that this currently thriving nation may become a third world nation struggling to find water, grow crops with malnourished livestock. Their tourism which accounts for such a high amount of their economy will crumble with the only people immigrating in likely to have aid due to the harsh conditions which will ensue. Please comment below on whether you agree or disagree with all criticisms more than welcome.   


Bee's at war with Almonds

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