Historic and current distribution of an endangered stonefly Perla grandis (Plecoptera: Perlidae) in the Czech Republic
| Authors | |
|---|---|
| Year of publication | 2011 |
| Type | Article in Periodical |
| Magazine / Source | Klapalekiana |
| MU Faculty or unit | |
| Citation | |
| Field | Zoology |
| Keywords | Plecoptera habitat requirements acidification Perla maxima |
| Description | The rare stonefly Perla grandis was recorded in several montane streams in the Hercynian mountain system and in the Carpathians in the 20th century. Now it is classified as endangered in the Red List of invertebrates of the Czech Republic due to the scarcity of recent records. The aim of this study is to examine its status at the localities where it was recorded in the first half of the 20th century and summarize all available data on its distribution in the Czech Republic. We found a considerable decline of the species in the Labe River basin as it was not re-collected at the localities of historic occurrence (Krkonoše, Orlické hory and Šumava Mts) and was not recorded at any new locality. This disappearance was probably a result of acidification of freshwater habitats in these regions in the second half of the 20th century. At present, it is only frequent and locally abundant in montane streams in the Beskydy and Jeseníky Mts. which were not so severely affected by acidification. |
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