I wrote about rat eradication efforts on South Georgia Island back in March. While it is too soon to know for sure what the result of that effort will be (note: things look really good so far), an older effort is worth examining.
Rat Island, a ten square mile island in the Aleutian Islands, has had to be renamed.
Rats arrived on the island during a shipwreck in 1780, and since that time they have wiped out nearly all of the native bird life. In 2008 efforts were made to remove rats from the island, and today a once silent island is described as “…hardly recognizable among the cacophony of birds calling everywhere; it’s alive with bird fledglings – teals, eiders, wrens, sparrows, eagles, peregrine falcons, gulls, sandpipers.“
As of today there have been over 1100 successful removals of invasive species from islands, including 500 rat removals, worldwide. I’ve seen firsthand how removal of invasive species impacts the native plants and animals in the Galapagos and on the Channel Islands, and hopefully some day I’ll get to see the results on South Georgia.
We live in a world where news about nature always seems to be negative, but there is reason for optimism. Invasive species removal continues on other islands, governments are beginning to look to things like dune, wetland, and floodplain restoration as a cost-effective way to combat flooding, obsolete dams are being torn down to increase fish stocks, and numerous other positive developments are going on around the world. Not all of the news is good, but there is definitely reason to think that the outlook for our future isn’t as bleak as the news might lead us to believe.