Funding for this research was provided by:
United States Fish and Wildlife Service (F15AC01207)
North Dakota Agricultural Experiment Station
North Dakota Game and Fish (F15AP00605)
Article History
Received: 18 May 2017
Accepted: 20 January 2018
First Online: 3 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.