Wetlands lost to agriculture can be reclaimed with relative ease, but they will not regain their former flora and fauna without a huge effort, according to research conducted at the University of Minnesota, in the US. Susan Galatowitsch, associate professor and a colleague found that restored prairie potholes were quickly colonised by waterfowl-dispersed plants but were slow to acquire a diverse plant community resembling the original wetlands. They found that although nitrates transported to wetlands are soon converted to nitrogen gas by soil bacteria, the early nitrate load could tip the balance in favor of weeds (www.newswise.com , August 18).
We are a voice to you; you have been a support to us. Together we build journalism that is independent, credible and fearless. You can further help us by making a donation. This will mean a lot for our ability to bring you news, perspectives and analysis from the ground so that we can make change together.