border walls exists all over the world they’re usually built for geopolitical
they’re usually built for geopolitical
they’re usually built for geopolitical reasons but how do they affect wildlife
reasons but how do they affect wildlife
reasons but how do they affect wildlife [Music]
you’ve probably heard about the law that
you’ve probably heard about the law that President Trump wants to extend between
President Trump wants to extend between
President Trump wants to extend between the u.s. and Mexico if all goes to plan
the u.s. and Mexico if all goes to plan
the u.s. and Mexico if all goes to plan it will extend 1,300 miles farther and
it will extend 1,300 miles farther and
it will extend 1,300 miles farther and cost someone a predicted 15 to 25
cost someone a predicted 15 to 25
cost someone a predicted 15 to 25 billion dollars much has been debated
billion dollars much has been debated
billion dollars much has been debated about whether this project can achieve
about whether this project can achieve
about whether this project can achieve its intended purpose slowing
its intended purpose slowing
its intended purpose slowing undocumented immigration and drug
undocumented immigration and drug
undocumented immigration and drug trafficking but beyond that this wall
trafficking but beyond that this wall
trafficking but beyond that this wall will have unpredictable and potentially
will have unpredictable and potentially
will have unpredictable and potentially disastrous effects on animal migration
disastrous effects on animal migration
disastrous effects on animal migration patterns that have existed for centuries
patterns that have existed for centuries
patterns that have existed for centuries it could actually change the ecology of
it could actually change the ecology of
it could actually change the ecology of the borderlands forever to learn how
the borderlands forever to learn how
the borderlands forever to learn how let’s take a look at the landscapes that
let’s take a look at the landscapes that
let’s take a look at the landscapes that the new wall will pass through most
the new wall will pass through most
the new wall will pass through most people think desert when they think of
people think desert when they think of
people think desert when they think of the ecosystem overlapping Mexico and the
the ecosystem overlapping Mexico and the
the ecosystem overlapping Mexico and the Southwest United States but along New
Southwest United States but along New
Southwest United States but along New Mexico and Arizona lies a rich mix of
Mexico and Arizona lies a rich mix of
Mexico and Arizona lies a rich mix of temperate and subtropical climates so
temperate and subtropical climates so
temperate and subtropical climates so deserts yes but also mountains like the
deserts yes but also mountains like the
deserts yes but also mountains like the ranges of the sky islands and lush flora
ranges of the sky islands and lush flora
ranges of the sky islands and lush flora like oak juniper and pine small wonder
like oak juniper and pine small wonder
like oak juniper and pine small wonder things that so many species rely on
things that so many species rely on
things that so many species rely on these passageways for their survival
these passageways for their survival
these passageways for their survival you’ve got the collared peccary the
you’ve got the collared peccary the
you’ve got the collared peccary the chachalaca as well as plenty of American
chachalaca as well as plenty of American
chachalaca as well as plenty of American icons like the Bison armadillo and
icons like the Bison armadillo and
icons like the Bison armadillo and coyote creatures of all stripes are
coyote creatures of all stripes are
coyote creatures of all stripes are threatened when their basic thruway’s
threatened when their basic thruway’s
threatened when their basic thruway’s are taken away how can they find water
are taken away how can they find water
are taken away how can they find water when they’re Creek has dried up how can
when they’re Creek has dried up how can
when they’re Creek has dried up how can they procreate without a selection of
they procreate without a selection of
they procreate without a selection of mate
mate
mate worst of all where are they supposed to
worst of all where are they supposed to
worst of all where are they supposed to go when climate change drives the
go when climate change drives the
go when climate change drives the temperatures of their habitats of
temperatures of their habitats of
temperatures of their habitats of potentially uninhabitable levels when
potentially uninhabitable levels when
potentially uninhabitable levels when these walls act as inadvertent dance a
these walls act as inadvertent dance a
these walls act as inadvertent dance a rivers flood of course no one creature
rivers flood of course no one creature
rivers flood of course no one creature is more important to the ecological
is more important to the ecological
is more important to the ecological equilibrium of this region than the apex
equilibrium of this region than the apex
equilibrium of this region than the apex predator in this case amazing native big
predator in this case amazing native big
predator in this case amazing native big cats like Cougars and ocelots that roam
cats like Cougars and ocelots that roam
cats like Cougars and ocelots that roam between the sumikko quarry and Huachuca
between the sumikko quarry and Huachuca
between the sumikko quarry and Huachuca mountain ranges why do
mountain ranges why do
mountain ranges why do apex predators matter so much if the
apex predators matter so much if the
apex predators matter so much if the native predators in this region are
native predators in this region are
native predators in this region are removed from the ecosystem it could set
removed from the ecosystem it could set
removed from the ecosystem it could set off a trophic cascade where the balance
off a trophic cascade where the balance
off a trophic cascade where the balance of flora and fauna populations is thrown
of flora and fauna populations is thrown
of flora and fauna populations is thrown off creating a cascade of volatile and
off creating a cascade of volatile and
off creating a cascade of volatile and unpredictable consequences think of it
unpredictable consequences think of it
unpredictable consequences think of it this way large predators eat deer which
this way large predators eat deer which
this way large predators eat deer which eat the vegetation in an ecosystem they
eat the vegetation in an ecosystem they
eat the vegetation in an ecosystem they keep each other in check
keep each other in check
keep each other in check remove the predator well then the deer
remove the predator well then the deer
remove the predator well then the deer population may grow out of control
population may grow out of control
population may grow out of control and they eat away the available
and they eat away the available
and they eat away the available vegetation thus changing the landscape
vegetation thus changing the landscape
vegetation thus changing the landscape beyond repair and that’s just one
beyond repair and that’s just one
beyond repair and that’s just one example this wall will create
example this wall will create
example this wall will create compromised conditions for all the
compromised conditions for all the
compromised conditions for all the wildlife in the borderlands with unknown
wildlife in the borderlands with unknown
wildlife in the borderlands with unknown and possibly irreparable consequences
and possibly irreparable consequences
and possibly irreparable consequences so how can these animals enjoy safe and
so how can these animals enjoy safe and
so how can these animals enjoy safe and easy transit when their migration
easy transit when their migration
easy transit when their migration patterns cross international borders
patterns cross international borders
patterns cross international borders perhaps wildlife crossing structures
perhaps wildlife crossing structures
perhaps wildlife crossing structures like a series of overpasses could be
like a series of overpasses could be
like a series of overpasses could be constructed and selectively open during
constructed and selectively open during
constructed and selectively open during migration and breeding seasons some have
migration and breeding seasons some have
migration and breeding seasons some have even argued that in this age of portable
even argued that in this age of portable
even argued that in this age of portable drones a target surveillance program
drones a target surveillance program
drones a target surveillance program could be implemented thus rendering this
could be implemented thus rendering this
could be implemented thus rendering this big and expensive law obsolete and
big and expensive law obsolete and
big and expensive law obsolete and unnecessary in any case as Americans
unnecessary in any case as Americans
unnecessary in any case as Americans consider the usefulness of such a law
consider the usefulness of such a law
consider the usefulness of such a law here’s hoping that the ocelots peccaries
here’s hoping that the ocelots peccaries
here’s hoping that the ocelots peccaries the chachalaca x’ and armadillos all
the chachalaca x’ and armadillos all
the chachalaca x’ and armadillos all have a seat at the table
”
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