ENVIR ST 260 1st Edition Lecture 25Outline of Last Lecture I. Conservation of Large CarnivoresII. History of wolves and management in WisconsinIII. Human wolf conflict and perceptionsIV. Does a public harvest increase tolerance of wolves?Outline of Current Lecture I. HousekeepingII. Urban LakesIII. Course Wrap-UpCurrent LectureHousekeeping Evaluation link posted on Moodle E-writing grades up by Monday Dec 15 Will set rubric pick-up hours next week Final exam and course grades posted Fri/Sat next week Contact Dr. Tracy with questionsUrban Lakes Yahara Watershed Land cover There is light to heavy development crammed in an area around the lakes. The high population density located in this region is what we’re concerned about. What are ways that people impact urban lakes? Class Ideas Fertilizer runof Recreation: Boats on the water can pollute if gasoline or oil leaks Aquatic Organisms: people move them around; aquatic hitchhikers Acid Rain: Can change chemistry of water Dairy Farms: runof of nitrogen and phosphorous Efects of imperviousness on runof and infiltrationThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Completely natural area 10% run of 50% infiltration Rural communities 20% runof 42% infiltration Medium Density, suburban areas 30% Runof 35% infiltration Cities 55% Runof 15% Infiltration Stuf on the ground now has a really easy route to get into the lakes What caused the most beach closures in 2013? Blue-green algae and high E-Coli This changes throughout the years. 2010, there was a lot of E. Coli. In 2008 there were sewage problems.  Sources of pollution for Madison lakes Dairy farm runof (high P) Algae Video Can be harmful to health of people and pets City has taken the solution of just going out and harvesting the large plant material that’s on the surface. They pick up all the algae that they can Impacts Health Gastrointestinal distress Rashes Respiratory problems Ecological Algal blooms Fish kills Invasive species Potential Solutions Manure Digesters Seal/replace sewer lines Yard waste Leave the leaf program. Pushing idea that rather than raking leaves and hauling them of, mulch them on own property What is the primary management objective? Safe recreation Compromise Health and safety vs. ecosystem function Health and safety wins out Access and use vs. wilderness Snowmobiles in Yellowstone, people want access but want to protect wildlife Economic vs. ecosystem protectionCourse Wrap-Up Evolution Populations and Communities Ecosystems (grasslands, deserts, etc.) Controversy and ethics Local ecology Facing Marley’s Ghost Scrooge “changed his behavior, his attitude, his life, his very humanity” – Kricher, CH 14. Interesting metaphor for ecology and people in general. We’re the ones who are Scrooge in this case. In a single evening Scrooge sees the past, present, and future We see past, present but do a bad job of thinking of the future in ecology We have a difficult time planning for the future Motivation for change Limited access to clean water Loss of natural pollinators Increased cost of oil, gas, electricity, etc. A lot ties to money and things that have a negative impact on our cozy American lives “The point here is that things, including natural things, are not always as they seem. Nor are they necessarily as we might wish them to be. They just are” – Kricher, Ch 1 How strongly do you agree with this