Tab. 4: Vergesellschaftung von Nitella opaca in Nordwestdeutschland

New facts on the occurrence and distribution of the threatened and rare stoneworts Chara baltica, C. connivens, C. contraria, C. virgata, Nitella hyalina, N. opaca, N. gracilis, N. capillaris, N translucens and N. flexilis and the non-threatened species Chara globularis in the northwestern part of L...

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Bibliographic Details
Main Author: Becker, Ralf
Format: Dataset
Language:English
Published: PANGAEA 2011
Subjects:
11121314T
123LW
45678LO
910E
Area
Callitriche hamulata
Conductivity
Coverage
DATE/TIME
Depth
bathymetric
E
Eleocharis palustris
Elodea nultallii
Ems-Seitenkanal bei Kluse
Event label
Hydrocotyle vulgaris
Isolepis fluitans
Lavay östliches Gewässer
Lavay westlich Wittmund
Littorella uniflora
LO
Location of event
LW
Nitella flexilis
Nitella opaca
Number of species
Optional event label
ORDINAL NUMBER
pH
Pilularia globulifera
Potamogeton crispus
Potamogeton natans
Ranunculus flammula
T
Tannhausen bei Aurich
Water sample
WS
Chara canescens
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.762482
https://doi.org/10.1594/PANGAEA.762482
Description
Summary:New facts on the occurrence and distribution of the threatened and rare stoneworts Chara baltica, C. connivens, C. contraria, C. virgata, Nitella hyalina, N. opaca, N. gracilis, N. capillaris, N translucens and N. flexilis and the non-threatened species Chara globularis in the northwestern part of Lower Saxony (Germany) are presented. A description of the stonewort sites is given and the abundance and the degrees of endangering of the species are discussed. Data about the Vegetation of the habitats of Nitella hyalina and N. opaca are reported. Additionally former sites of Chara canescens have been checked again. References to determination problems concerning Nitella opaca and N flexilis are given. Finally the protection of stoneworts, management requirements and the need for future investigations are discussed.

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