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Titolo:
Water quality and macroinvertebrate response to acidification following intensified summer droughts in a Western Australian wetland
Autore:
Sommer, B; Horwitz, P;
Indirizzi:
Edith Cowan Univ, Ctr Ecosyst Management, Joondalup, WA 6027, Australia Edith Cowan Univ Joondalup WA Australia 6027 oondalup, WA 6027, Australia
Titolo Testata:
MARINE AND FRESHWATER RESEARCH
fascicolo: 7, volume: 52, anno: 2001,
pagine: 1015 - 1021
SICI:
1323-1650(2001)52:7<1015:WQAMRT>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACID PRECIPITATION; INVERTEBRATES; TOXICITY; CAPACITY; METALS; SOILS; LAKES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Sommer, B Edith Cowan Univ, Ctr Ecosyst Management, 100 Joondalup Dr, Joondalup, WA 6027, Australia Edith Cowan Univ 100 Joondalup Dr Joondalup WA Australia 6027 ia
Citazione:
B. Sommer e P. Horwitz, "Water quality and macroinvertebrate response to acidification following intensified summer droughts in a Western Australian wetland", MAR FRESH R, 52(7), 2001, pp. 1015-1021

Abstract

A decline in pH from similar to6-8 to similar to4-5 over a period of 4 years was detected during routine monitoring of surface waters at Lake Jandabup. This was accompanied by lower water levels, shorter periods of inundation and measurable changes in other attributes of the water: sulfate, iron and ammonium concentrations increased markedly, and filterable reactive phosphorus and colour (gilvin) decreased. Macroinvertebrate family richness did not change notably over this period, but there were shifts in community structure: ostracods, isopods and oligochaete worms became less abundant; amphipods, mayflies and gastropods disappeared, while ceratopogonids (Diptera) and macrothricid cladocerans increased in abundance. Historical evidence suggests that at least one other acidification event has occurred in the recent past. Mechanisms associated with the acidification, and the wetland's capacity to recover from such events, are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 23:32:33