Elevated atmospheric CO₂: A nurse plant substitute for oak seedlings establishing in old fields

Earth & Environmental Sciences

• nurse plant 100%
• old field 83%
• seedling 60%
• oak 58%
• water stress 27%
• summer 20%
• grassland 19%
• secondary succession 16%
• woody plant 14%
• air 12%
• sandy soil 12%
• planting 11%
• water 10%
• growing season 10%
• seed 10%
• water level 9%
• soil water 9%
• drought 9%
• rainfall 7%
• soil 5%
• test 4%

Agriculture & Biology

• nurse plants 88%
• Quercus 54%
• carbon dioxide 46%
• seedlings 36%
• summer 19%
• Quercus ellipsoidalis 18%
• grasslands 17%
• water stress 16%
• secondary succession 14%
• air 13%
• acorns 12%
• water 12%
• surface water level 11%
• sandy soils 10%
• woody plants 10%
• soil water 8%
• growing season 7%
• drought 7%
• irrigation 7%
• planting 7%
• rain 7%
• soil 5%
• testing 3%

Chemical Compounds

• Soil 50%
• Environment 22%
• Time 7%