Visitor Counter

hitwebcounter web counter
Visitors Since Blog Created in March 2010

Click Below to:

Add Blog to Favorites

Grizzly bears, black bears, wolves, coyotes, cougars/ mountain lions,bobcats, wolverines, lynx, foxes, fishers and martens are the suite of carnivores that originally inhabited North America after the Pleistocene extinctions. This site invites research, commentary, point/counterpoint on that suite of native animals (predator and prey) that inhabited The Americas circa 1500-at the initial point of European exploration and subsequent colonization. Landscape ecology, journal accounts of explorers and frontiersmen, genetic evaluations of museum animals, peer reviewed 20th and 21st century research on various aspects of our "Wild America" as well as subjective commentary from expert and layman alike. All of the above being revealed and discussed with the underlying goal of one day seeing our Continent rewilded.....Where big enough swaths of open space exist with connective corridors to other large forest, meadow, mountain, valley, prairie, desert and chaparral wildlands.....Thereby enabling all of our historic fauna, including man, to live in a sustainable and healthy environment. - Blogger Rick

Subscribe via email to get updates

Enter your email address:

Receive New Posting Alerts

(A Maximum of One Alert Per Day)

Wednesday, July 2, 2014

So we finally had a winter in the Midwest and Northeast that resembled those of the mid 20th century and lo and behold the light switch goes off about the fact that whitetail deer were historically limited to more southerly climes by the cold,,,,,,,,,,with Caribou and Moose occupying the northern ring of state into Canada...........No mystery that when you keep the deer pinned down into the middle tier states, Moose and Caribou thrive(assuming that we human animals do not chew up and destroy their habitat) by not being afflicted with the debilitating "dynamic duo" impact of brain disease and winter tics

Deer vs. Vehicle Crashes Indicative of Population Survival Rate
Wisconsin Ag Connection - 07/02/2014

Following a record-breaking harsh winter, a statewide effort to assess the condition of car-killed deer is helping researchers understand winter's impacts on Wisconsin's deer herd. This information is in addition to radio telemetry monitoring of deer over the last four years has that has also provided insight into winter's impacts on deer.

In general, deer populations in southern Wisconsin came through the winter in better condition than herds in the north, as indicated by fat stores, according to car-killed deer assessments conducted by Department of Natural Resources wildlife officials. This finding coincides with field observations from DNR wildlife biologists throughout the state and reports from the public.

This spring, 522 deer were sampled statewide during a period when fat reserves were at their lowest point of the year. Local wildlife biologists inspected and gathered data from deer that were killed in vehicular collisions to evaluate pregnancy rate and fat stores at various points within the deer carcass, including the rump, around the heart and kidneys and in the bone marrow.

"Last January, we heard a lot of concerns about the potential winter impacts on the deer herd," said Dan Storm, a DNR research ecologist. "From our radio-collared deer studies, we've learned a lot about how winter impacts our northern deer, but we didn't have similar projects in the southern half of the state. Our research and wildlife staff quickly put a plan in place to look at car-killed deer. This was a very inexpensive and informative way for us to monitor winter impacts on deer throughout the state."

Fat stores are a key indicator of nutritional condition as deer rely on these reserves, accumulated during summer and fall, to survive winter. Does with more fat are able to provide better care to their newborns, which increases survival and is important to herd growth rates - fawn survival is closely linked to doe nutritional condition.

In the southern portion of the state, 40 percent of adult deer sampled had rump fat, while rump fat was present in only 14 percent of adult deer sampled in the north. A greater proportion of deer in the north had little or no organ fat, as opposed to deer in the south. Similarly, bone marrow condition was better in the south than the north, and adults were more likely to have fatty marrow than juveniles in both the north and south.

No comments: