ESS 3.3

some examples of natural factors leading to biodiversity loss

*big idea: these cause loss of habitat → biodiversity loss*

* earthquake
* tsunami
* volcano

invasive species

outcompete native species

* ex: spotted lantern fly

generalist species

have a broad niche (can live many places)

* ex: opossum

specialist species

have a narrow niche (can really only live in one environment)

* ex: koala, panda, polar bear…

oil palms

*create habitat destruction*

* malaysia & indonesia
* used for food & fuel

IUNC red list

*provide info on status/trends/threats to a species to gather more info on biodiversity conservation*

* evaluates if a species is under threat
* criteria used:
* habitat quality
* number of locations
* population size
* geographic range

what makes a species prone to extinction

* narrow geographic range
* large body size
* if they have many predators
* slow reproduction rate
* if they are hunted
* trophic level -higher

biological hotspots

Endangered species example

*blue whale*

* why? whaling, habitat loss from pollution, enviornmental change

improved species example (growing in pop.)

*bald eagle*

* how they rebounded? ban of ddt
* why were they endangered? hunting, ddt, etc…