Resources ≀ Biology

Spatially varying density dependence drives a shifting mosaic of survival in a recovering apex predator (Canis lupus)

Posted on October 27, 2020

Understanding landscape patterns in mortality risk is crucial for promoting recovery of threatened and endangered species. Humans affect mortality risk in large carnivores such as wolves (Canis lupus), but spatiotemporally varying density dependence can significantly influence the landscape of survival. … read more

Posted in Biology | Tagged landscape of risk, management of endangered species, population recovery, proportional hazards, spatial modeling, species recolonization, survival analysis, Upper Great Lakes wolves, Upper Peninsula

Spatial Responses of Wolves to Roads and Trails in Mountain Valleys

Posted on October 27, 2020

Increasing levels of human activity in mountainous areas have high potential to inhibit animal movement across and among valleys. We examined how wolves respond to roads, trails, and other developments. We recorded the movements of two wolf packs for two … read more

Posted in Biology | Tagged Alberta, canada, Canis lupus, case control, Jasper National Park, park management, path, resource selection, road, trail

Do Wolves Mate for Life? Research at Yellowstone Park provides new insights into the lives of wolves.

Posted on October 4, 2020

Video: loom.com/share/ba1e0ef4c56146d1862375fb8e8ba07a

Posted in Biology, Resources

Berry Important? Wolf Provisions Pups with Berries in Northern Minnesota

Posted on March 6, 2020

Wolves (Canis lupus) primarily provision pups by catching mammalian prey and bringing remains of the carcass to the pups at a den or rendezvous site via their mouths or stomach. In August 2017, we observed an adult wolf regurgitating wild … read more

Posted in Biology | Tagged blueberry, Canis lupus, gray wolf, minnesota, parental care, Vaccinium

Trumpeter Swan Killed by Gray Wolf in Minnesota

Posted on January 29, 2020

Canis lupus (Gray Wolf) have been suspected as natural predators of Cygnus buccinator (Trumpeter Swan), but detailed descriptions of such predation events are lacking from the peer-reviewed literature. Herein, we document a Trumpeter Swan that was killed by a Gray … read more

Posted in Biology, General, Predator/Prey Relationships | Tagged killed, minnesota, trumpeter

Estimating Biomass of Berries Consumed by Gray Wolves

Posted on January 29, 2020

Gray wolves (Canis lupus) consume berries and other wild fruits seasonally when available or abundant. However, a method to convert percent frequency of occurrence or percent volume of berries in wolf scats to percent biomass has not yet been developed. … read more

Posted in Biology | Tagged berries, biomass, consumed, estimating, wolves

Subscribe Today

From Facebook

Wolfwatcher

1 hour ago

Shift in diet allowed gray wolves to survive ice-age extinctionbit.ly/3daMOFuGray wolves are among the largest predators to have survived the extinction at the end of the last ice age around11,700 years ago. Today, they can be found roaming Yukon's boreal forest and tundra, with caribou and moose as their main sources of food.A new study led by the Canadian Museum of Nature shows that wolves may have survived by adapting their diet over thousands of years---from a primary reliance on horses during the Pleistocene, to caribou and moose today. ... See MoreSee Less

Shift in diet allowed gray wolves to survive ice-age extinction

bit.ly

Gray wolves are among the largest predators to have survived the extinction at the end of the last ice age. A new study analysing teeth and bones shows that the wolves may have survived by adapting their diet o...

View on Facebook

Wolfwatcher

16 hours ago

· Letters: Urban laws threaten cattlemendpo.st/3ermZjGThe proposed laws would not allow artificial insemination or let a farmer or rancher choose the age when the animals were taken to market.I did not grow up on a farm or ranch but did spend many summers at my uncle’s farm. I learned early on to stay clear of bulls, especially in the breeding season. They can be very dangerous. In fact, my great grandfather was killed by a bull.I also recall times could be hard for my uncle and when money was needed they had to sell cattle — regardless of the age of the livestock.The proposed laws would not allow artificial insemination or let a farmer or rancher choose the age when the animals were taken to market.Remember that the recently passed law that will reintroduce wolves in Colorado was passed due to a heavy “yes” vote from urban areas. What do people who live in the city know about wolves? What do the people who live in the city know about the cattle business? Would it make sense for rural folks to dictate bike lanes or traffic signals? Likewise, it doesn’t make sense for city folks to dictate the cattle business. These proposed laws will not only add economic hardships to Colorado’s agricultural sector but city folks better get ready to open up your wallet at the grocery store as meat prices rise.Cliff Wetherill, Arvada, ColoradoDenver Postphoto: Deby Dixon ... See MoreSee Less

Photo

View on Facebook

NWC Business Office

You can contact us by email by completing the form on our contact page, or can can reach us by mail at the following address:

PO Box 161281
Duluth, MN 55816-1281

Web Design by My Web Maestro