Principles Of Ecology And Field Biology Essay - 1621 Words

Principles of Ecology and Field Biology (BIO 200) Laboratory on Life Table Analysis Analysis 1. Login to Canvas and go to the Bio 200 page. 2. Click on the ‘Life Table Analysis’ file. 3. Pull up the data from the current year (also on Canvas), and enter it in the appropriate folder. Enter data for pre-1940 males, pre-1940 females, post-1940 males, and post-1940 females separately. That is, you are going to create four separate life tables. 4. Click on the ‘Calculate Statistics’ button to analyze each set of data individually. 5. The software takes our static data and uses it to construct what appears to be a cohort life table (the table appears to follow one set of individuals from birth to death). The columns in your life tables, and their meanings, are as follows. 1x – shows the total number of individuals alive at the beginning of the time interval. The values of L represent the average no. of individuals alive during the interval and are calculated by (lx + lx+1)/2. The values in the L(%) column are the values of L divided by the total of the L column and multiplied by 100. In other words, L(%) represents the estimated age structure of the population (the percentage of the population in each age group). Q – (should be qx) is the mortality rate during each time interval; E – (should be ex) is the number of years of expected life for individuals alive during that time interval. 6. You will need to calculate an S (standardized survivorship) column for eachShow MoreRelatedZoology Essay1264 Words   |  6 Pagesand descriptions of animals, but during the 12th century it began to emerge as a science. Perhaps the most important naturalist of the era was the German scholar St Albertus Magnus, who denied many of the superstitions associated with biology and reintroduced the work of Aristotle. The anatomical studies of Leonardo da Vinci were far in advance of the age. 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