Author Archives: Nathan Lyle

Chronic wasting disease (CWD) has become a major concern among those involved in managing wild and captive cervid populations. CWD is a fatal, highly transmissible spongiform encephalopathy caused by an abnormally folded protein, called a prion. Prions are present in … read more

Aim: The assembly of species into communities and ecoregions is the result of interacting factors that affect plant and animal distribution and abundance at biogeographic scales. Here, we empirically derive ecoregions for mammals to test whether human disturbance has become … read more

Population declines were documented in multiple ruminant species in Montana and surrounding states starting in 1995. While weather, food sources, and predation certainly contributed, the declines were often attributed, at least partly, to unexplained factors. Use of teratogenic agrichemicals, notably … read more

Large carnivores are being globally reintroduced with the goal of restoring ecological interactions. However, the extent that competitive interactions are restored within communities is often unclear. In a before–after study within Isle Royale National Park (in the US state of … read more

Fiscal Year (FY) 2023 was the fourth year Congress appropriated funding to the Wildlife Services (WS) program specifically for the implementation and further development of nonlethal methods for reducing livestock-predator conflict, and eventually beaver damage. WS refers to this appropriation … read more

Fiscal Year (FY) 2022 was the third year Congress allocated funding to the Wildlife Services (WS) program specifically for the implementation and further development of nonlethal methods for reducing certain types of human-wildlife conflict. WS refers to this allocation and … read more