https://padlet.com/ruthchambers5/899fwvj2fvm Step 1 - Answer, Yellowstone and reintroduction of Grey Wolves en-us 2019-01-18 09:40:35 UTC 2019-03-30 21:46:30 UTC hello@padlet.com ruthchambers5 https://padlet.com/ruthchambers5/899fwvj2fvm/wish/322043655 3.     The wolves were brought in because the increased elk population was overgrazing the deciduous, woody species such as aspen and cottonwood. 

]]> 2019-01-18 09:44:41 UTC https://padlet.com/ruthchambers5/899fwvj2fvm/wish/322043655 ruthchambers5 https://padlet.com/ruthchambers5/899fwvj2fvm/wish/322044131 The absence of apex predators (top trophic level) - in an ecosystem where they'd naturally occur - removes an element of predation in the factors influencing abundance of prey populations. In terrestrial ecosystems these prey animals will generally be primary or secondary consumers - herbivores  - in the food web, and so plant abundance and distribution will also be affected indirectly since patterns and intensity of herbivore grazing will change, as their numbers may increase and behaviours may change in response to predator removal.]]> 2019-01-18 09:46:44 UTC https://padlet.com/ruthchambers5/899fwvj2fvm/wish/322044131