The species composition of the damselfly assemblage and the life history patterns of two Coenagrionidae (Ischnura elegans and Cercion lindeni) were investigated along the urban tract of a river characterized by increasing organic pollution. The assemblage was dominated by generalist species, usually recorded in lentic habitats, rather than by typical riverine species and the proportion of the latter decrease at the most polluted sites. At the end of Winter, the mean size and instar distribution were different between the sampling sites showing that the life history of both species examined were influenced by a degradation of the environmental quality. A longer reproductive period, absence of diapause, and tolerance of low oxygen concentration appear to be key factors that allow generalist species I. elegans and C. lindeni to predominate at the polluted sites.

Solimini, A.G., Tarallo, G.A., & Carchini, G. (1997). Life history and species composition of the damselfly assemblage along the urban tract of a river in central Italy. HYDROBIOLOGIA, 356, 21-32.

Life history and species composition of the damselfly assemblage along the urban tract of a river in central Italy

CARCHINI, GIAN MARIA
1997

Abstract

The species composition of the damselfly assemblage and the life history patterns of two Coenagrionidae (Ischnura elegans and Cercion lindeni) were investigated along the urban tract of a river characterized by increasing organic pollution. The assemblage was dominated by generalist species, usually recorded in lentic habitats, rather than by typical riverine species and the proportion of the latter decrease at the most polluted sites. At the end of Winter, the mean size and instar distribution were different between the sampling sites showing that the life history of both species examined were influenced by a degradation of the environmental quality. A longer reproductive period, absence of diapause, and tolerance of low oxygen concentration appear to be key factors that allow generalist species I. elegans and C. lindeni to predominate at the polluted sites.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore BIO/05
English
Con Impact Factor ISI
Coenagrionidae; life history; lowland river; urban pollution; Ischnura; Cercion
AQUATIC INSECTS; ODONATA; PATTERNS
Solimini, A.G., Tarallo, G.A., & Carchini, G. (1997). Life history and species composition of the damselfly assemblage along the urban tract of a river in central Italy. HYDROBIOLOGIA, 356, 21-32.
Solimini, A; Tarallo, G; Carchini, Gm
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/55617
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