UIS Commission on Karst Hydrogeology and Speleogenesis
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Karstbase Bibliography Database

Knight, Lee R. F. D. Johns, Tim
The occurrence of hydra circumcincta (schulze, 1914) (hydrozoa: hydridae) in a well in the dorset chalk, uk
Cave and Karst Science
2012
39
2
63
65

This report details the first record of a Hydra species, Hydra circumcincta, from British groundwater. Ten polyps of the species were recorded from a well in the Dorset Chalk, while sampling for groundwater fauna as part of the Groundwater Animals-UK project. The Hydrozoa is a group rarely recorded from groundwater habitats with only one stygobitic species known to science. International records of Hydrozoa are discussed and several possible colonization pathways into the well are hypothesized.

1356-191X
Knight, Lee R. F. D. Johns, Tim , 2012, The occurrence of hydra circumcincta (schulze, 1914) (hydrozoa: hydridae) in a well in the dorset chalk, uk , Cave and Karst Science , 39 , 63 - 65 http://bcra.org.uk/pub/candks/