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CrashCourse · 2012년 11월 12일 게시
Population ecology is the study of groups within a species that interact mostly with each other, and it examines how they live together in one geographic area to understand why these populations are different in one time and place than they are in another. How is that in any way useful to anyone ever? Hank uses the example of the West Nile virus outbreak in Texas to show you in this episode of Crash Course: Ecology. Table of Contents 1) Density & Dispersion 02:03 2) Population Growth 03:07 3) Limiting Factors 03:45 a) Density Dependent 06:16 b) Density Independent 07:11 4) Exponential & Logistical Growth 08:04 5) How to Calculate Growth Rate 09:33 References: http://www.latimes.com/news/nation/nationnow/la-na-nn-west-nile-virus-20120817,0,2506584.story http://www.dshs.state.tx.us/idcu/disease/arboviral/westnile/information/general/myths/ http://en.wikipedia.org/wiki/Mosquito http://www.nature.com/scitable/knowledge/library/population-limiting-factors-17059572 Campbell Biology 9th ed. Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids
