{ "nid": "59", "details": "\x3cspan class=\"title\"\x3eEcoBeaker™: Mark and Recapture\x3c/span\x3e\x3cbr/\x3e\n\x3cspan class=\"description\"\x3eStudents try mark/recapture sampling on a population of pigeons in a park. Initially the population is closed with no mortality or other complicating factors, and students can manipulate the sampling effort, resampling effort, and time to wait between sampling and resampling. In a more advanced part of the lab, students can add in real-world complications such as changing the death rates or speed of movement of marked vs. unmarked birds, adding in immigration and emigration, and setting a rate at which markings are lost. Many people are using this lab to replace labs with beans or beetles in pans or other \x26quot;simulated\x26quot; mark/recapture situations, either before going out in the field or when the time available/weather doesn\'t allow field trials of mark/recapture.                        \r\n\x3c/span\x3e\x3cbr/\x3e\n\x3cbr/\x3e\n\x3cstrong\x3eLevel\x3c/strong\x3e: Intro or advanced\x3cbr/\x3e\n\x3cstrong\x3eKey Concepts\x3c/strong\x3e: Mark-recapture sampling; Sampling design\x3cbr/\x3e\n\x3cstrong\x3eCourses\x3c/strong\x3e: Applied Ecology; Ecology; Intro Bio: Eco/Evo/Genetics; Population Biology\x3cbr/\x3e\n          \x3cbr/\x3e\x3ca href=\"/search_result_details/brief/59\" class=\"node_brief\"\x3eRead less\x3c/a\x3e        \x3cbr/\x3e\x3ca href=\"/cart/add/59\"\x3e + Add to course collection\x3c/a\x3e  \x3c/span\x3e \x3c!-- description --\x3e\n" }