Alstad, Donald N. Age 67; died at home in Roseville on April 18 after a two-year journey with lymphoma. He was preceded in death by his parents, Norman and Georgia (nee Voss). Don graduated from Amherst College in 1969, and taught high school science in IA for 2 years. He received an MS in civil engineering from the Univ. of IA, and a PhD in Biology from the Univ. of UT, where he began a career focused on insect ecology and evolution. Don joined the Dept. of Ecology, Evolution & Behavior at the Univ. of MN in 1982. His passion for teaching was recognized by the Morse award for outstanding contributions to undergraduate education. His many avocational passions included playing piano, rebuilding a 1958 tractor, keeping bees (until a marauding black bear put him out of business), training golden retrievers, and flying his Cessna 175 Skylark. But most of all, Don was passionate about his family: his wife of 29 years, Karen Oberhauser; and daughters Amy (Eric Udelhofen) and Leah. Memorial service 9:00 AM Saturday, April 26 at Unity Unitarian Church, 733 Portland Ave., St. Paul. Memorials to a conservation or education organization of the donor's choosing.