Ecologist studies Great Lakes

January 26, 2021 0 Comments

first_imgNotre Dame research assistant professor Sheila Christopher earned a $155,358 grant from the University of Michigan Water Center, which focuses on environmental issues specific to the Great Lakes, to study environmental solutions in Lake Erie. Christopher, who works with Notre Dame’s Environmental Change Initiative (ECI), said her research will focus on creating a computer model to represent the effectiveness of two specific farmland-drainage management practices, the two-stage ditch process and the tile drain management process, to combat fertilizer runoff into the Great Lakes, which supply 20 percent of the world’s freshwater. “The goal would be to identify if these new and innovative management practices can help reduce nutrient pollution at a large scale, as compared to more traditional practices,” Christopher said. “And also by using this watershed scale [computer] model … we’ll be able to transfer the technology to other research groups, not only in the Great Lakes, but other watersheds around the country and even the world.” These management processes relate to the use of fertilizer in farming and the way farmers deal with excess fertilizer, Christopher said. Biology professor Jennifer Tank, who directs the ECI, saidsuch runoff fertilizer could greatly affect the aquatic ecosystem. “In order to have productive agriculture, we need to apply fertilizer, and oftentimes we apply too much fertilize,” Tank said.  “That ends up in our streams and rivers, and the streams and rivers transport those excess nutrients downstream, often to sensitive water bodies.” Researchers address the problem of nutrient pollution on a smaller scale by looking at alternative ways of managing the land, according to Tank. “We’ve been working on different management strategies and testing out different management practices that might reduce the impact of agricultural fertilizers,” Tank said. However, this small-scale research fails to address bigger problems like those in the Great Lakes, so Christopher stepped in, Tank said. “We hired Christopher as a research assistant professor … to take the field data that we’ve been collecting and the positive results that we’ve been getting at the smaller spatial scale … and then scale that up to whole water shed,” Tank said. “And then her goal is to put that into a water shed model to see if we can impact or improve the state of the Great Lakes Tributary.” While nutrient pollution occurs all over the world, this grant focuses specifically on the impact on the Great Lakes, according to Christopher. “The Great Lakes are used for tourism, for drinking water, [and] for fisheries, and we need to maintain and keep these lakes healthy. In order to do that, we have to look upstream,” Christopher said. The ECI brings together the efforts of about 40 different Notre Dame faculty members from several different disciplines to focus on issues regarding environmental change, Tank said. “The three areas that the Environmental Change Initiative focuses on is the impact of climate change on the environment, the impact of invasive species on the environment, and the impact of land use on the environment, mainly focused around fresh water,” Tank said. “The [Environmental Change Initiative] provides this umbrella initiative or organization that organizes faculty around these grand environmental challenges that really are facing society as a whole.” Contact Katie Sisk at [email protected]last_img read more

Fletcher on the road back

September 21, 2020 0 Comments

first_imgManchester United midfielder Darren Fletcher has taken a big step forward in his recovery from a debilitating bowel condition, manager David Moyes has said. Press Association Fletcher last played for the first team on Boxing Day last year. Moyes said: “I think with the nature of his illness, everyone should be hoping he comes back. “It is the sort of thing that, whatever walk of life you are in, you want to see people make recoveries from illness or other things that are wrong with them. “Darren has shown that with the right medical treatment, by looking after yourself and doing the right training you can get back to where you were.” Two players back in the first-team picture are experienced centre-backs Rio Ferdinand and Nemanja Vidic. The pair have both had fitness issues but played together for the first time since the infamous derby loss to Manchester City in September in the midweek Capital One Cup win over Norwich. They could now both feature against Fulham at Craven Cottage in the Barclays Premier League this weekend. Moyes said: “I think they are both very close. They played against Premier League opposition in midweek, they both played 90 minutes. “I can’t see any reason why they wouldn’t be ready to be selected or be involved.” England international Danny Welbeck will not be involved in London as he continues his recovery from a knee problem. Moyes said: “Danny Welbeck has had a bit of fluid on his knee. “He has trained a few days this week and he is certainly getting much closer to match fitness but he will not travel this weekend.” But Moyes insists the Scotland international will not be rushed as he eases back into a routine of training and playing. Fletcher made his first appearance for United at any level in 10 months on Monday as he played 67 minutes for the under-21s against Fulham at Salford. The 29-year-old has featured little since being diagnosed with ulcerative colitis in December 2011. He did return to make 10 appearances for United, as well as three for Scotland, last season but his comeback was put on hold as he underwent surgery in January. Moyes said: “It is great to get Darren back. “It was the first time he pulled on a jersey in a competitive reserve league game (since the operation) and we’re really pleased. “We will bring him along, his training is coming along well, but we don’t want to do anything that might give him a setback. “It is a sort of steady, slow grind for him just now. “But we are pleased and hope to involve him in the upcoming reserve games in the weeks to come, if he continues to do as well as he is doing now.” Moyes has sensed a strong desire within the game to see Fletcher, a former United trainee, back in action soon. last_img read more