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Four degrees and beyond: the potential for a global ... - Amper

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222 R. Warren<br />

Table 2. A variety of examples of cross-sectoral interactions: x-axis—driving sector, which incurs climate change impacts directly; y-axis—<strong>the</strong> incumbent<br />

sector, which incurs impacts indirectly as a result of <strong>the</strong> changes in <strong>the</strong> driving sector. Each example is followed by a (y) or an (n) indicating whe<strong>the</strong>r<br />

<strong>the</strong> driving sector impact has been quantified at all; secondly a (y) or an (n) indicating whe<strong>the</strong>r <strong>the</strong> effect of <strong>the</strong> interaction upon <strong>the</strong> incumbent sector<br />

has generally been included in physically based quantitative assessments of <strong>the</strong> impacts of climate change on <strong>the</strong> incumbent sector. Indirect effects<br />

that impact upon <strong>the</strong> incumbent sector as a result of human adaptation to impacts in <strong>the</strong> driving sector are also included.<br />

Phil. Trans. R. Soc. A (2011)<br />

Downloaded from<br />

rsta.royalsocietypublishing.org on November 30, 2010<br />

driving sector → hydrology agriculture coasts terrestrial oceans biodiversity human<br />

ecosystems health<br />

incumbent sector ↓<br />

—<br />

— as <strong>for</strong> terrestrial<br />

ecosystems<br />

— changes in biome<br />

type affect soil<br />

moisture<br />

content <strong>and</strong><br />

evapotranspiration<br />

hydrology ∗∗∗∗∗ adaptation to<br />

impacts<br />

increasing<br />

dem<strong>and</strong> <strong>for</strong><br />

water (n, n)<br />

—<br />

— loss of pollinators<br />

(some y, n); loss<br />

of wild crop<br />

types (y, n);<br />

pests <strong>and</strong><br />

diseases (some<br />

rates (some y, n)<br />

loss of carbon from<br />

soils (y, n)<br />

∗∗∗∗∗ farml<strong>and</strong> loss owing<br />

to sea-level rise<br />

<strong>and</strong> salinization<br />

(y, n)<br />

agriculture <strong>and</strong> food water stress<br />

reducing crop<br />

yields (y, y)<br />

—<br />

y, n)<br />

∗∗∗∗∗ — — changes in coastal<br />

ecosystems (y, n)<br />

agricultural<br />

intensification<br />

leading to<br />

increased<br />

nutrient<br />

run-off (n, n)<br />

coasts changes in<br />

nutrient levels<br />

in estuaries<br />

(n, n)

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