2008 relative percent cover of plant species in LTER moist acidic, dry heath, and moist non-acidic tundra experimental plots; in new experimental plots established in 2006; and for Sagavanirktok River plots in tussock and heath tundra.

In 2008, Relative percent cover of plant species was measured in the Arctic LTER's experimental and control plots across several habitats: moist acidic, dry heath, and moist non-acidic tundra; in new variable (low) nutrient addition experimental plots established in 2006; and for Sagavanirktok River toposequence plots in tussock and heath tundra.2008年，研究人员完成了三类样地的植物物种相对盖度测定：其一为北极长期生态研究（Arctic LTER）设置于湿润酸性苔原、干石楠灌丛苔原与湿润非酸性苔原三类生境中的实验组与对照组样地；其二为2006年设立的新型低浓度养分添加实验样地；其三为萨加万尼克托克河（Sagavanirktok River）地形序列样地中的草丘苔原与石楠灌丛苔原样地。