Living Ostracoda (Crustacea) from the town moat of Bremen, Germany

in Crustaceana
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Between 2009 and 2014 we collected 23 ostracod species in the historical town moat of Bremen, Germany. Today, the moat is part of an urban park, separated into six basins by various bridges. Brackish water, pumped from the Weser River into the moat, regulates the water level and is the main factor controlling the various physical and chemical parameters of the basins. Brackish water ostracod species originate from this artificial inflow, but only a minority of these species establishes stable populations. The Bremen moat ostracod assemblages are compared with the moat of Greifswald. The different environmental setting (e.g., water current) and the number of studied localities can explain the differences in the occurrence of ostracods in these two localities.

Living Ostracoda (Crustacea) from the town moat of Bremen, Germany

in Crustaceana

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References

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Figures

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    City map of Bremen in the year 1739 (left) and of Greifswald in the year 1652. The arrow indicates the location of the sample from the town moat of Greifswald. Modified from Brandorff et al. (2013) and Frenzel et al. (2004).

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    Sample sites in the town moat of Bremen. GW, artificial groundwater inlet by the construction of a house.

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    Water temperature and conductivity at the sampling sites in the town moat of Bremen in 2009 and 2010. GW, groundwater of the inlet near locality 6. Modified from Brandorff et al. (2013).

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    Redundancy analysis of the environmental parameters water temperature and conductivity and the eight most important ostracod species (excluding larvae). CanCa = Candona candida (O. F. Müller, 1776), CanNe = Candona neglecta Sars, 1887, CytFu = Cytheromorpha fuscata (Brady, 1869), DarSt = Darwinula stevensoni (Brady & Robertson, 1870), FabPr = Fabaeformiscandona protzi (Hartwig, 1898), IsoBe = Isocypris beauchampi (Paris, 1920), LimIn = Limnocythere inopinata (Baird, 1843), PhyKr = Physocypria kraepelini G. W. Müller, 1903. Modified from Brandorff et al. (2013).

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