Plant community composition in the International Tundra Experiment (ITEX) plots at Barrow and Atqasuk, Alaska 2019

Arctic ecosystems are changing in response to arctic warming, which is proceeding more than twice as fast as the global average. The International Tundra Experiment (ITEX) was established in the early 1990s to understand the effects of warming and environmental variability on tundra vegetation properties and ecosystem function. The ITEX program has been extremely valuable for detection of changes in tundra plant and ecosystem responses to experimental warming and to background climate change across sites that span the major ecosystems of the Arctic. These files contain data representing the community composition and structure of ITEX plots at Barrow and Atqasuk in a text tab delimited format. The data presented were collected in 2019 for 10 plots (5 control and 5 experimental) at four sites (Atqasuk Wet Meadow, Atqasuk Dry Heath, Barrow Wet Meadow, and Barrow Dry Heath).