{ "nid": "63", "details": "\x3cspan class=\"title\"\x3eEcoBeaker™: Prairie Sampling\x3c/span\x3e\x3cbr/\x3e\n\x3cspan class=\"description\"\x3eThis laboratory explores sampling strategies and dispersion patterns using a model of a prairie plant community. Students first learn how to estimate population sizes from samples using scaling factors. Next, they collect and graph sampling data to evaluate the importance of random versus biased sampling. They also analyze how sampling effort influences the accuracy of population estimates. Finally they investigate how the spatial distribution of a species (random, even, or clumped) influences how much sampling effort is needed for accurate estimation. This is a popular lab to use before going out in the field, and is really nice for showing what variance means in sampling.\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: Quadrat samples; Sampling design; Sampling power\x3cbr/\x3e\n\x3cstrong\x3eCourses\x3c/strong\x3e: Conservation Biology; Ecology; Environmental Science; Intro Bio: Eco/Evo/Genetics\x3cbr/\x3e\n          \x3cbr/\x3e\x3ca href=\"/search_result_details/brief/63\" class=\"node_brief\"\x3eRead less\x3c/a\x3e        \x3cbr/\x3e\x3ca href=\"/cart/add/63\"\x3e + Add to course collection\x3c/a\x3e  \x3c/span\x3e \x3c!-- description --\x3e\n" }