NDLI: Chironomidae larvae as bioindicators of an acid mine drainage in Portugal

Content Provider	Springer Nature Link
Author	De Bisthoven, L. Janssens Gerhardt, A. Soares, A. M. V. M.
Copyright Year	2005
Abstract	The abandoned São Domingos mine in South Portugal discharges acid metal pollution in the drainage system. A dynamic pH- and metal-gradient (pH 3.3–6.8) modulated by rainfall at the confluence of a tributary with the acid mine drainage (AMD)-channel, and a small reservoir contaminated with arsenic were sampled for Chironomidae in three different seasons and compared with a control river, to test whether this insect family is sensitive to AMD-pollution and arsenic. The AMD sites contained 18–22 taxa, compared to 22 taxa in the reservoir and 25 taxa in the control site. The chironomid fauna in the AMD was characterised by a high proportion of Chironominae and predatory Tanypodinae, and a low proportion of Orthocladiinae, these subfamilies being useful and easy bioindicators for AMD. The presence of morphological deformities in Ablabesmyia monilis and Procladius sp. is a potential bioindication of AMD but due to low numbers of larvae, it was of limited use. Despite high arsenic levels in the water, the small reservoir contained many taxa forming a typical lentic community.
Starting Page	181
Ending Page	191
Page Count	11
File Format	PDF
ISSN	00188158
Journal	Hydrobiologia
Volume Number	532
Issue Number	1-3
e-ISSN	15735117
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chironomidae bioindication acid mine drainage community deformities Ecology Hydrobiology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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