However, the copper yield was lower than those of chromium and arsenate. For example, 52.4% of chromium but only 15.6% of copper was removed from copper and chromium-containing Scots pine (Pinus sylvestris L.) sapwood blocks using the fungi Antrodia vaillantii and Poria placenta separately (Sierra-Alvarez, 2007). Solid fungal treatment using A. vaillantii removed 84.9% of chromium, 66.0% of arsenate, and 18.3% of copper from CCA-treated Scots pine sapwood (Sierra-Alvarez, 2009). Humar et al. showed that copper was not significantly removed from CuSO4-treated Norway spruce (Picea abies) chips by treatment with Gloeophyllum trabeum, A. vaillantii, Poria monticola, or Leucogyrophana pinastri (Humar et al., 2002, 2004).