Abstract
I present a statistical framework for sign counts that permits abundance and density estimation for closed populations (e.g., in respect to ingress and egress). The estimation technique requires the capture, marking, and release of animals so the subsequent sign they produce is distinguishable from unmarked individuals. I develop variance estimators using finite sampling theory for the cases of simple random sampling and stratified random sampling of field plots for animal sign in the landscape. The variance formulas are used to determine the effects of sampling effort on the subsequent precision of abundance estimates. I present sample size formulas to determine the joint levels of marking effort and areal sampling required for a prespecified level of sampling precision in sign-marking studies
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
