Today the ISW adds a new entry to the "make lemons from lemonade" section of invasive species management: entrepreneurs in New Zealand making fur products out of the invasive brushtail possum (Trichosurus vulpecula). The possums, introduced from Australia back in the 1800s, are now so numerous on New Zealand that "designers who use their fur are seen as national heroes" (hah!).
The full story is in The Independent. It's worth a read just to laugh at the thought of fashionistas using possum fur as a substitute for polar bear fur (!!) and wearing lime green possum fur bikinis and other unmentionables (NSFW link here if you must see). I guess it's better than the broad-spectrum poisons sometime employed to control the animals, but let's be real: it's called the fur industry for a reason. The majority of designers are doing this to make money, not to eradicate the possums...even if they are calling it "eco fur." Note also this article (.pdf) in an ecological journal from 1982, recognizing the risk of "crashing the market" by overharvesting and hypothesizing about maintaining a sustainable harvest.