Threats on Biodiversity by Jefferyl Bagalayos

2. 
Biodiversity
It is the diversity of living things found in
the natural world. The concept usually refers
to the different species, but also includes
ecosystems and the genetic diversity within a
given species.

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PHYSICAL ALTERATION OF HABITATS
THE POPULATION CONNECTION
POLLUTION
EXOTIC SPECIES
OVERUSE

4. 
One of the greatest sources of loss is the
physical alteration of habitats through the
process of (1) conversion, (2) fragmentation,
and (3) simplification.
(1) Conversion
It is when natural areas are converted to farms,
housing subdivisions, shopping malls, marinas,
and industrial centres.

5. (2) Fragmentation
The division of a landscape into patches of habitat by
road construction, agricultural lands, or
residential areas.
(3) Simplification
Human use of habitats often simplifies them.
Removing fallen logs and dead trees from
woodlands for firewood.

6. Also...
(4) Intrusion
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Habitat destruction has already been
responsible for 36% of the known extinctions
and is the key factor in the currently observed
population declines. Natural species are
adapted to specific habitats, so if the habitat
changes or is eliminated, the species go with
it.

7. ‣ Past losses of biodiversity can be attributed
to the expansion of the human population
over the globe. Continuing human population
growth will be further alter natural
ecosystems, resulting in the inevitable loss of
more wild species and additional declines in
populations.

8. 
One key to holding down the loss in
biodiversity lies in bringing human
population growth down. If the human
population increases to 10 billion, as some
demographers believe that it will, the
consequences for the natural world will be
frightening.

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Another major factor that decreases
biodiversity is pollution, which can directly
kill many kinds of plants and animals,
seriously reducing their population.
Climate Change- pollution destroys or alters
habitats, with consequences just as severe as
those caused by deliberate conversions.
Most of the global pollution problems can be
traced to the industrialized world

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An exotic species is a species introduced into
an area from somewhere else, often a
different continent.
The transplantation of species by humans has
occurred throughout history, to the point
where most people are unable to distinguish
between the native and exotic species living
in their lands.

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Overuse is another major assault against wild
species, responsible for 23% of recent
extinctions.
Overuse is driven by a combination of
greed, ignorance, and desperation.
Trade in exotics- another prominent form of
overuse is the trafficking in wildlife and in
products derived from wild species.

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Greed- the long-term prospect of extinction
does not curtail the activities of
exploiters, because, to them, the prospect of
a huge immediate profit outweighs it.
eBay String- The FWS is the agency with
jurisdiction over the illegal trade in wildlife in
the United States.