TY - GEN AU - Halmetoja,A AU - Valtonen,E T AU - Koskenniemi,E TI - Perch (Perca fluviatilis L.) parasites reflect ecosystem conditions: a comparison of a natural lake and two acidic reservoirs in Finland SN - 0020-7519 PY - 2001///0906 KW - Animals KW - Ecosystem KW - Finland KW - epidemiology KW - Fish Diseases KW - Fresh Water KW - parasitology KW - Hydrogen-Ion Concentration KW - Parasitic Diseases, Animal KW - Perches N1 - Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1016/s0020-7519(00)00115-6 ER -