Action Plans for Margaritifera Auricularia and Margaritifera Margaritifera in Europe, Wydania 18-117Council of Europe, 1 sty 2001 - 66 The species Margaritifera margaritifera still lives in the rivers of many European states, where its presence is always linked to excellent water quality. Margaritifera auricularia was thought to be extinct during many years, but populations were discovered in the Ebro river (Spain) and in the Loire basin (France) , where they are critically endangered. Action Plans are presented for both species. |
Spis treści
Contents | 31 |
Goals and objectives | 49 |
Summary on protection and management measures on M margaritifera | 63 |
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
action plan activities adult agricultural animal Annex Aragón areas artificial auricularia authorities banks basin Bern Convention biology breeding Canal Imperial carried Community conservation of European Council of Europe countries currently decline distribution Dordogne E-mail Ebro ecological effects endangered ensure Environment establish European wildlife existing Experts extinction factors fish France freshwater pearl mussel gills glochidium Group Habitats Directive historical host host fish implemented important improve infestation interest Invertebrates Italy juveniles known legislation levels List live maintain Margaritifera margaritifera measures monitoring natural habitats Nature Conservation necessary needed North numbers occurs plant populations present probably problems programme proposed protected areas protection recently recommendations records recovery recruitment Red Data Regional regulation release reproduction requirements restoration river River Ebro selected Spain species specimens status streams success survey threatened threats trout water quality wildlife and natural