Acanthocyclops gmeineri n. sp. (Crustacea, Copepoda) aus dem Grundwasser von Wien (Österreich): Bemerkungen zur Zoogeographie und zur Sauerstoffsituation der Grundwassers am Fundort

Pospisil P.¹ 1989
Zool. Anz., 233 (3/4): 220-230

ABSTRACT

The new groundwater cyclopid Acanthocyclops gmeineri n. sp. from a groundwater standing-pipe of a wooded flood-plain in Vienna (Austria) is described. The new species as well as the other groundwater organisms of the area often has to deal with hypoxic conditions, as is shown be means of the situation in one standing-pipe. The oxygen values in the pipe itself amount to 0.15 mg /l and more, while the values of the surrounding aquifer amount to less than 0.1 mg/l. It is supposed that a higher population density in the standing-pipe itself, compared with the surrounding groundwater is favoured, possibly among other factors, by the better oxygen situation within the standing-pipe.
The special zoogeographical situation around Vienna as a mixing area of groundwater organisms of west-european, pontokaspic and marine origin is pointed out. Acanthocyclops gmeineri n. sp. may fit in with this mosaic as another element with relatives with southeast-european distribution.