Funding for this research was provided by:
Norges Forskningsråd (248349/F40)
National Natural Science Foundation of China (31401892)
Doctoral Foundation of Heilongjiang Bay Agricultural University i (xdb2013-02)
Regionale forskningsfond Vestlandet (NO) (239039)
Article History
Received: 28 December 2017
Accepted: 18 June 2018
First Online: 29 June 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest. Funding parties had no role in planning, conducting or publishing the study.