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The Future of CRP, Grassland Losses Have Wildlife Managers Worried By Dan Nelson - Delta Waterfowl Magazine Editor The oldest rule in waterfowl managementthe one that says duck numbers always increase when the breeding grounds get wetmight not apply when the next wet cycle rolls around. At least a few waterfowl managers are openly expressing concern that the next wet cycle may not produce a bounce in duck numbers like the one that occurred between 1994 and 1999. The reason for their concern: Puddle ducks returning to the prairie breeding grounds may not find adequate grass nesting cover. About 16 million acres of land enrolled in the Conservation Reserve Program (CRP) are scheduled to expire in 2007, and some two million of those acres exist in North and South Dakota, the states responsible for the bulk of the ducks produced in the United States. Another 16 million acres of CRPincluding about a million in the Dakotasexpire the following year. Everyone knows that ducks need waterespecially seasonal and temporary wetlandswhen they return to the breeding grounds. But research conducted over the last decade showed that puddle ducks also need large blocks of grass nesting cover if they’re to be successful, and CRP has provided much of the necessary nesting cover. Big blocks of grass buffer nesting hens from predators. Where 40 percent of the landscape has grass, nest success exceeds the minimum necessary to expand the population; where it falls below 40 percent nest success typically drops below maintenance levels. The CRP on the US side of the pothole region was a significant reason the duck population expanded so dramatically during the last wet cycle. CRP is a US Department of Agriculture (USDA) program that compensates farmers to put cropland into grass for the duration of 10-year contracts. CRP is good for wildlife and the environment, and it allows soils drained of nutrients to rejuvenate. CRP started in 1985, and today there are 39.6 million acres enrolled nationwide. The idea that many of those acres could go into crop production in 2007 is keeping waterfowl managers awake nights. There are several reasons wildlife professionals are concerned about the future of CRP. One is the federal deficit, which is large enough that the next farm bill is likely to come under increased Congressional scrutiny. Wildlife managers fear that conservation titles could be among the first cuts if the farm program is scaled back. Another worry is that acceptance rates across the Dakotas during the last CRP signup were less than 20 percent, well below the national average of 50 percent. Even if CRP is reauthorized, the acceptance rate across the US portion of the prairie pothole region (PPR) would have to increase dramatically to retain the existing CRP coverage on the breeding grounds.
Significant losses of grass cover would have a devastating impact on production of upland-nesting game birds. Wrote Minnesota Outdoor News staffer Shawn Perich: “The good old days of upland bird and duck hunting on the northern prairies may soon be memories.” Ron Reynolds, the US Fish and Wildlife Service biologist who published the definitive study on the impact of CRP on duck populations, agrees. “If we lose CRP, we are going to see some pretty drastic declines in duck production.” Reynolds’ 1992-1997 study showed that the CRP acreage in North and South Dakota added two million ducksbirds that wouldn’t have existed had it not been for CRPto the fall flight each of those years. “If we lose CRP, our findings suggest we’re going to lose that many ducks. “Those two million extra ducks help the population grow from year to year,” Reynolds says. “Think of it as money drawing compound interest in a bank account. It doesn’t take long before you double your money.” Prime Nesting Habitat at Risk Subsidies and higher commodity prices not only tempt farmers to abandon CRP, they also have been responsible for the conversion of tens of thousands of acres of native prairie to crop production, particularly in the Missouri Coteau of South Dakota. The Missouri Coteau has some of the finest natural nesting habitat left on the continent, but large tracts have converted to crop production in recent years, and the losses are exceeding conservationists’ ability to secure funding to take easements from willing ranchers. “So far the benefits of CRP have offset the losses of native prairie,” says Reynolds, adding that, “CRP is more attractive nesting cover because it’s undisturbed (not grazed). But losses of native prairie are a concern because if we lose CRP, native prairie is about all we’ll have left.” Reynolds also notes that large blocks of native prairie enhance nest success on adjacent tracts of CRP by elevating larger portions of the landscape to the “habitat threshold”. Reynolds’ study showed that only in areas where 40 percent of the landscape contains grass do ducks consistently achieve the nest success necessary to expand the population. The bottom line according to Reynolds: “If we lose CRP and we lose more native prairie, we’re in big trouble.” Thanks to computer modeling, Reynolds knows exactly what impact the loss of nesting cover will have on duck numbers. “For every one percent of existing grass we lose, we’ll see a drop of 25,000 ducks in the fall flight,” he says. If all the CRP acres set to expire in 2007 are plowed under, an annual loss of 500,000 ducks to the fall flight would result. And just as the two million extra ducks produced by CRP yielded compounded increases in the fall flight, so the loss of 500,000 birds will result in an annual compounded reduction in the fall flight. Reynolds says there are 20 million acres of grass left in the Dakotas, about 10 to 11 million of those in the areas that are responsible for the bulks of the PPR’s duck production. The importance of those acres cannot be overstated. “Prairie Canada is pretty beat up right now,” he says. “The Dakotas and Montana, with some help from portions of Minnesota and Iowa, have made up for the decline in Canadian productivity.” The loss of CRP and native prairie doesn’t bode well for the pintail, which has been in a long-term population decline. If the pintail is the “canary in the mineshaft” signaling a problem on the breeding grounds, Reynolds believes blue-winged teal and gadwalla true prairie duckwill be the next species to show declines. The adaptable mallard may be more resistant to grassland losses, but he believes “other species will decline at an accelerated rate.” Wildlife Interests Attend CRP Conference The challenges facing CRP were discussed in early June in Fort Collins, Colorado at a conference sponsored by the Farm Service Agency (FSA) and the Natural Resources Conservation Service (NSCS). Reynolds was one of many wildlife experts participating in the conference. The objective, according to a communication from Dave Nomsen, vice president of government affairs for Pheasants Forever, was be to convince lawmakers to make CRP a top priority in the debate over the new farm bill. Pheasants Forever is the organization most responsible for getting CRP approved as part of the 1985 farm bill and re-authorized in the 1990 farm bill. Pheasant numbers across the Dakotas, Minnesota, Iowa and Nebraska have jumped to levels not seen since the expiration of the soil bank program in the early 1960s. “If ever the outdoor community needed to come together to address an issue that has continental impact on wildlife populations, this is the time,” says Joe Duggan of Pheasants Forever. “The loss in populations of all kinds of wildlife is going to be huge and immediate. We’re talking about upland birds, migratory waterfowl and songbirds.” Reynolds agrees. “This isn’t just ducks we’re talking about,” he says. “We’ll see some big losses of pheasants, prairie grouse, quail and a lot of other wildlife species if we lose CRP.” Wildlife managers across the PPR are urging sportsmen to get involved by working with local, state and national conservation organizations to lobby Congress for support of CRP. |
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