Polar ecosystem

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  • The Earth’s polar regions (see Figure 1.1) are ecologically, economically, and, increasingly, geopolitically important; they are particularly vulnerable to the speed and magnitude of climate change and have significant potential to influence the global climate system (Oreskes, 2004; IPCC, 2007a; Anderegg et al., 2010). Climate models and observational data have shown that polar regions have warmed at substantially higher rates than the global mean (IPCC, 2007c).

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  • This ancient Native American proverb and what it implies resonates today as it has become increasingly obvious that people’s actions and interactions with the environment affect not only living conditions now, but also those of many generations to follow. Humans must address the effect they have on the Earth’s climate and how their choices today will have an impact on future generations.

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  • From February 11 to 13, 2001, at the Lodge at Snowbird ski resort in the Wasatch Mountains of Utah, 17 people met to talk, ski, relax, and try to find common ground. What emerged was the Agile Software Development movement. Representatives from Extreme Programming (XP), Scrum, the Dynamic Systems Development Method (DSDM), Adaptive Software Development (ASD), Crystal Methods, Feature-Driven Development (FDD), Pragmatic Programming, and others sympathetic to the need for an alternative to document-driven, rigorous software development processes convened....

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  • From the early explorers onwards, visitors to the Arctic and to Antarctica have commented with great interest on the presence of lakes, wetlands, and fl owing waters. These environments encompass a spectacular range of conditions for aquatic life, from dilute surface melt ponds, to deep, highly stratifi ed, hypersaline lakes.

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  • The direction of science is often driven by methodological progress, and the topic of this book is no exception. I remember sitting with a visitor on the terrace of a hotel overlooking Lake Constance in the early 1970s. We were discussing the gravimetric method of measuring total lipids in zooplankton. A few years later, as a visitor in Clyde E. Goulden’s lab, I was greatly impressed by the ability of an instrument called an Iatroscan to discriminate and quantify specific lipid classes (e.g., triacylglycerols, polar lipids, wax esters).

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