Trump wall could threaten wildlife and environment

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A study from Stanford University published in the journal BioScience reports that the construction of a border wall between the US and Mexico could have serious consequences for the wildlife and environment surrounding the area.

The US-Mexico border crosses through six eco-regions. These areas are home to diverse flora and fauna including 62 species tagged as critically endangered, endangered, or vulnerable by the International Union for Conservation of Nature.

The wall will mainly degrade landscape connectivity, preventing species from reaching resources, mates and affecting migration.

The report states that the wall would disconnect 346 species from half of their habitat including the endangered Peninsular bighorn sheep, the Sonoran pronghorn and the Mexican gray wolf.

According to a report from the Center for Biological Diversity, the population of Mexican gray wolves is critically endangered growing by only four wolves from 2014 to 2017.

Apart from affecting wildlife, the wall will also affect the flow of three major rivers: the Rio Grande, Colorado, and Tijuana Rivers.

This also affects between 100 and 500 rivers and streams connected to them.


RUNDOWN SHOWS:
1. Map showing US-Mexico border
2. Map showing six ecoregions that cover the US-Mexico border
3. Representation of construction of the border wall
4. Representation of endangered species affected by the border wall
5. Representation of Mexican Gray Wolf
6. Map showing the Rio Grande, Tijuana and Colorado rivers and their tributaries
7. Representation of endangered plant species affected by the border wall
8. Representation of alternatives that will allow for wildlife movement

VOICEOVER (in English):
"According to a study from Stanford University published in the journal BioScience, the construction of a border wall between the US and Mexico could have serious consequences for the wildlife and environment surrounding the area."

"The US-Mexico border crosses through six eco-regions. These areas are home to diverse flora and fauna including 62 species tagged as critically endangered, endangered, or vulnerable by the International Union for Conservation of Nature."

"The wall will mainly degrade landscape connectivity, preventing species from reaching resources, mates and affecting migration."

"The report states that the wall would disconnect 346 species from half of their habitat including the endangered Peninsular bighorn sheep, the Sonoran pronghorn and the Mexican gray wolf."

"According to a report from the Center for Biological Diversity, the population of Mexican gray wolves is critically endangered growing by only four wolves from 2014 to 2017."

"Apart from affecting wildlife, the wall will also affect the flow of three major rivers: the Rio Grande, Colorado, and Tijuana Rivers."

"This also affects between 100 and 500 rivers and streams connected to them."

"A study by the University of Texas at Austin released in July last year reported that the wall could threaten the Tamaulipan thornscrub ecosystem, the endangered wildflower Zapata bladderpod, and the threatened whiskerbush cactus."

"Researchers from this study suggest alternatives that could allow for wildlife movements such as wildlife crossings and electronic sensors."

SOURCES:
BioScience, Phys.org
https://academic.oup.com/bioscience/article/68/10/740/5057517
https://phys.org/news/2018-03-border-wall-texas-animals-scientists.html