Tom Wassmer

2 Questions 7 Answers 0 Followers

Questions related from Tom Wassmer

Reduction of dairy and beef grazing land between 1940 and today?

Dear colleagues, I hope you and your family are safe. I am having a hard time to find numbers of the acreage or % of operations or % of land that was used to produce dairy and beef in the US,...

06 July 2020 1,871 2 View

Should I omit samples with zero specimen from calculating biodiversity indices? What is the lowest abundance to be included in niche overlap indices?

1.) In my design I have biweekly samples throughout the year that yielded no specimen from any species, especially in the winter months. Should those be excluded in biodiversity calculations? 2.)...

24 December 2018 2,827 7 View