Original paper
Chemical profiles of Amblystegium riparium, Fontinalis antipyretica and Rhynchostegium riparioides in the Grand-Duchy of Luxembourg
Vanderpoorten, Alain; Ector, Luc; Hoffmann, Lucien
Nova Hedwigia Band 71 Heft 1-2 (2000), p. 209 - 221
19 references
published: Sep 3, 2000
ArtNo. ESP050007101015, Price: 29.00 €
Abstract
The response curves of Fontinalis antipyretica, Rhynchostegium riparioides and Amblystegium riparium as a function of BOD5, P-PO43-, hardness and pH were investigated by logistic regression in 94 brooks in the Grand-Duchy of Luxembourg. The best predictive models were obtained for Amblystegium riparium and Rhynchostegium riparioides as a function of BOD5 and, to a lesser extent, P-PO43-, and for Fontinalis antipyretica as a function of pH and hardness. Amblystegium riparium and Rhynchostegium riparioides showed opposite response curves along the gradients of BOD5, P-PO43- and pH, the former increasing in frequency with increasing organic and trophic pollution levels while decreasing in frequency with pH. The probability of occurrence of both species could not be predicted from hardness. Conversely, the probability of occurrence of Fontinalis antipyretica was best predicted by pH and hardness. This species exhibited an optimum pH at 7.3 with a range between 6.5 and 8, and an optimum hardness at 5.8°F with a range between 1.5 and 22°F.
Keywords
Fontinalis antipyretica • hardness • pH • species • pollution level • Grand-Duchy of Luxembourg