SPRING DEER SURVEYS BEGIN LANSING--Department of Natural Resources Wildlife personnel will begin deer pellet group surveys in the northern portions of the Lower Peninsula and the western Upper Peninsula this week. The DNR has used pellet surveys to measure the distribution and abundance of white-tailed deer populations since the early 1950s. "This survey technique is used in Michigan because of the secretive nature of whitetails and the difficulty in counting them in forested habitats," said Dr. Harry Hill, biometrician-in-charge of field surveys. The technique involves wildlife biologists and other personnel counting the number of deer pellet groups along well-defined survey transects. Biologists then are able to estimate the number of deer within a defined area. These estimates often are expressed as the number of deer per square mile. The technique does not work well in the southern one-third of the state where intensive agricultural activities disturb evidence of deer. The DNR uses sex-age-kill population models, based on harvest numbers and the sex and age of harvested deer, to estimate the deer population in this region. Wildlife managers also will be counting the number of dead deer they encounter while conducting pellet surveys this year. "Spring is the best time of year to assess how winter conditions impacted deer populations on the northern fringe of their range," said Rebecca Humphries, Wildlife Chief. "Deer seek shelter in winter deer yards, such as cedar swamps, when snow depths and cold temperatures prevail in northern Michigan. Mother Nature takes her toll if bitter winter conditions extend for too long." Deer pellet surveys and dead deer searches are just two of the techniques that provide wildlife managers with important information for assessing the status of Michigan's deer population. These survey results, along with other information about the deer population, are necessary to determine if the DNR is nearing its deer population goal. Harvest regulations are adjusted each year in response to a desired deer population size.
Source: MDNR
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