Illinois and Nebraska, two states in the same latitude as Iowa, have moved towards tighter limits on panfish. Besides the Missouri and Mississippi rivers in Nebraska and Illinois, respectively, neither state has much in the way of natural lakes. I am curious as to how Iowa’s reservoirs are different from those of Illinois and Nebraska, and how those differences dictate having no limits on reservoirs in southern Iowa with more than one hundred acres of surface water.
I would also like to know if water fertility increases dramatically when one crosses the border from Minnesota to Iowa. Chester Woods, an artificial flood reservoir in Olmsted County, Minnesota, is less than one hundred miles from the Iowa border, and is located a stone’s throw from Rochester, Minnesota, one of Minnesota’s largest population centers. Yet, a strict limit on bluegill harvest in this small reservoir has produced great results, from all accounts. The biologists of the Minnesota DNR have been 100% behind tighter limits in the southmost part of the state, which is very little different from Iowa.
And what of the Lake Winona study? The Minnesota DNR found that in fertile waters like Lake Winona, Winona County, Minnesota, the excessive harvest of large male bluegill had an adverse affect on bluegill population size structures. Lake Winona in Winona County is (a) a fertile body of water, and (b) less than forty miles from the Iowa border.
If one checks the Minnesota DNR site, one will learn that Minnesota’a lakes are not pristine and crystal-clear. Instead, they suffer from agricultural run-off, with much of the same problems, as do Iowa waters. So, I don’t understand how Iowa water quality problems set it apart from Minnesota, which has imposed tighter panfish regulations in the southern part of the state adjacent to Iowa.
I would also like to see some hard quantitative data showing that panfish sizes on Iowa waters are fine as compared to impoundments in Illinois, Nebraska, and southern Minnesota, where water conditions are the same, but actual limits are in place.
And, if I were fishing for walleye with my very young nephews, and they deep-hooked a sub-legal walleye, I would use the experience to teach them how the world works. Eagles and otters need to eat, too, and if letting the scavengers have a small walleye helps kids learn that lesson I happily let that deep-hooked fish go. I would not use their tears to answer a question about whether Iowa’s stock-and-kill walleye fishery is the best way to manage things. Tearful four-year olds are a pitiful sight, but not something that replaces a rational answer about the nature of Iowa’s in-land walleye fishery.
Not saying I have the answers…but my experience in earning an MA and working on a PhD from the University of Iowa has taught me not take the word of experts as gospel, either.