Received: 15 August 2020
Accepted: 29 November 2020
First Online: 5 January 2021
Ethics approval and consent to participate
: This work was done under the ethical regulations of Ben Gurion University in the years 2003–2004, under state laws and regulations complying with a special permit from the Israeli Nature and National Parks Protection Authority (permit 2004/38393).
: Not applicable.
: The authors declare that they have no competing interests.