References

1) Ripple, W.J., Beschta, R.L. Trophic cascades in Yellowstone: The first 15 years after wolf reintroduction. Biol. Conserv. (2011), doi:10.1016/j.biocon.2011.11.005

2) Bergstrom, B.J., Vignieri, S., Sheffield, S.R., Sechrest, W., Carlson, A.A. The northern Rocky Mountain gray wold is not yet recovered. BioScience (2009), doi:10.1525/bio.2009.59.11.11

3) Shivik, J.A. Tools for the edge: what's new for conserving carnivores. BioScience (2006).

4) Groom, Martha J., Gary K. Meffe, C. Ronald Carroll, et al.Principles of Conservation Biology. Third. Sunderland: Sinauer Associates, Inc., 2006. Print.


5)Boyd, D.K.  Case Study: Wolf habituation as a conservation conundrum.
http://www.sinauer.com/groom/article.php?id=24

6) http://science.jrank.org/pages/3752/Kelp-Forests-Sea-urchins-sea-otters-kelp.html

7) http://soundwaves.usgs.gov/2008/11/research.html

8) http://www.wolfcountry.net/information/WolfPup.html