Tive Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits
Tive Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, offered the original perform is correctly cited.Schlotz et al. BMC Ecology 2013, 13:41 http://biomedcentral/1472-6785/13/Page two…