Copy of Lab Manual_ Lake Ice (BIOL1961 GCE) - Updated: Spring 2023 EM (GRADED A+)

Lake Ice BIOL 1961, GCE Adapted from Carey et al., 2015 Connections You previously gained an understanding of our Earth’s climate and how it has changed over time. Here we use real, long-term data to explore one way that climate change alters a critical part of lake ecology: winter ice cover. Learning objectives ● Understand how global climate change impacts aquatic ecosystems ● Perform, interpret, and apply a linear regression. This includes considering sources of variation and making predictions. ● Develop basic skills using Excel for graphing, statistical analyses, and multi-step calculations Make a copy of this document Remember to make a copy of this document (FileMake a copy), or download a copy (FileDownload) to use as your working document. You will submit this file as part of your post-lab assignment. Questions that require responses are numbered as “Q#”. It is helpful if your text is in an easy-to-read color. Introduction Lakes are changing worldwide due to anthropogenic climate change. Many lakes that were historically frozen in the winter are now experiencing fewer days of ice cover and earlier ice-off dates. This has far-reaching implications for lake organisms and ecosystem processes. For example, shorter ice-on periods mean warmer waters and alterations to the amount of oxygen in the water. Warmer waters can also mean increased primary productivity and phenological shifts for some lake organisms. In this module, you will 1) explore patterns