http://www.galapagos.org/conservation/invasive-species/

“Since the discovery of Galapagos in 1535, humans have brought many alien species to the islands—some intentionally, including goats, pigs, cats, and both ornamental and food plants (vegetables and fruits), to name a few—while others, including rodents, insects, and weedy plants, have been carried to the islands accidentally.” They have had to go through great effort to preserve the environment for future generations.

More Sources:

http://www.galapagosislands.com/galapagos-conservation/galapagos-enviroment.html

http://www.darwinfoundation.org/en/science-research/ecological-restoration/

http://www.theguardian.com/artanddesign/gallery/2013/sep/16/postcards-galapagos-islands-in-pictures#/?picture=417421750&index=4

http://www.northernrockieswolves.org/wyoming/tourism.html

“According to a recent study, the roughly 151,000 people who visit Yellowstone National Park each year to see wolves bring in $35 million annually to Montana, Idaho, and Wyoming, which is multiplied several times within the local economies.”

(PIC) http://southdakotapolitics.blogs.com/south_dakota_politics/2012/09/of-wolves-and-men.html

More Sources:

http://www.georgewright.org/251duffield.pdf

http://www.defenders.org/publications/wolves_and_people_in_yellowstone.pdf

http://www.cbsnews.com/videos/all-the-buzz-about-mosquitoes/

http://www.examiner.com/article/huge-florida-mosquitoes-what-travelers-can-do-to-avoid-getting-stung

@5:15 on the CBS video they discuss how they are spraying the Florida Keys to reduce mosquito populations to extend their tourism period to year round.

http://www.huffingtonpost.com/2012/06/06/japan-tsunami-debris-oregon-dock_n_1574558.html#slide=1066656

http://oregonstate.edu/ua/ncs/archives/2012/jun/floating-dock-japan-carries-potential-invasive-species

(PIC) http://www.usnews.com/news/articles/2012/06/08/tsunami-dock-could-bring-invasive-japanese-species-to-us-coast

In the aftermath of the 2011 Japan tsunami, there was 165 ton dock that washed ashore Oregon’s coast. The invasive species still alive after their 5,000 mile journey on the dock posed a threat to Oregon’s environment.