TY - RPRT TI - Community maturity, species saturation and the variant diversity- productivity relationships in grasslands AU - Q. Guo AU - T. Shaffer AU - T. Buhl PY - 2006 DO - 10.1111/j.1461-0248.2006.00980.x UR - https://pubs.usgs.gov/publication/70028752 ID - 70028752 ER -