International Tundra Experiment
The International Tundra Experiment (ITEX) is a long-term international collaboration of researchers examining the responses of arctic and alpine plants and ecosystems to climate change. The ITEX network consists of more than 20 sites in polar and alpine locations around the world. Researchers measure plant responses to standardized, small-scale passive warming, snow manipulations, and nutrient additions. Researchers use small open-top chambers to passively increase mean air temperature by 1-2oC. The ITEX approach has been validated by tundra responses at the plot level. The network has published meta-analyses on plant phenology, growth, and reproduction, composition and abundance, and carbon flux.
- Henry, GHR, and Molau, U. 1997. Tundra plants and climate change: the International Tundra Experiment. Global Change Biology, 3(S1): 1-9.
- Marion, G. et al. 1997. Open-top designs for manipulating field temperature in high-latitude ecosystems. Global Change Biology, 3(S1): 20-32.
- Hollister, RD and Webber, PJ. 2000. Biotic validation of small open-top chambers in a tundra ecosystem. Global Change Biology, 6: 835-842.
- Arft, AM, et al. 1999. Responses of tundra plants to experimental warming: Meta-analysis of the International Tundra Experiment. Ecological Monographs, 96(4): 491-511.
- Walker, MD, et al. 2006. Plant community responses to experimental warming across the tundra biome. Proceedings of the National Academy of Sciences, 103(5): 1342-1346.
- Oberbauer, SF, et al. Tundra CO2 fluxes in response to experimental warming across latitudinal and moisture gradients. Ecological Monographs, 77(2): 221-238.