摘要：A terrestrial crustacean. the crayfish, creates widespread fine-scale landfonns (mounds or "chimneys'")on the floodplain oflhe Roanoke River in eastern Nonh Carolina, U.S.A. These mounds are typically 12 cm highand 8 cm in diameter. and are composed of extremely high ooncenlrations ofday, Non-crayfish-affectcd soils onthe noodplain, regardless of coarser-scale Iandform type, are dominated by sand. illustrating that crayfish an: Iprimary mechanism for concentrating clay and creating spatial heterogeneity on the Ooodplain.
关键词：zoogeomorpbology; biopedoturbation. crayfish; Roanoke River; North Carolina
