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Titolo:
Localized acidification near sour gas processing plants: are forest floor macro-invertebrates affected?
Autore:
Carcamo, HA; Parkinson, D;
Indirizzi:
Univ Calgary, Dept Biol Sci, Calgary, AB T2N 1N4, Canada Univ Calgary Calgary AB Canada T2N 1N4 l Sci, Calgary, AB T2N 1N4, Canada
Titolo Testata:
APPLIED SOIL ECOLOGY
fascicolo: 3, volume: 17, anno: 2001,
pagine: 199 - 213
SICI:
0929-1393(200107)17:3<199:LANSGP>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROUND-BEETLES COLEOPTERA; TERRESTRIAL GASTROPODS; CENTRAL ALBERTA; PITFALL TRAPS; CARABIDAE; SOIL; SULFUR; ASSEMBLAGES; SCALE;
Keywords:
sulfur pollution; soil macro-fauna; carabidae; biodiversity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Carcamo, HA Agr & Agri Food Canada, Lethbridge Res Ctr, POB 3000, Lethbridge, AB T1J 4B1, Canada Agr & Agri Food Canada POB 3000 Lethbridge AB CanadaT1J 4B1 a
Citazione:
H.A. Carcamo e D. Parkinson, "Localized acidification near sour gas processing plants: are forest floor macro-invertebrates affected?", APPL SOIL E, 17(3), 2001, pp. 199-213

Abstract

The diversity and activity of forest floor invertebrates, particularly carabid beetles, were studied along a sharp acidification gradient in pine andaspen forests close to a sulfur block near a sour gas processing plant in SW central Alberta, Canada. Invertebrates were sampled by continuous unfenced pitfall traps at all sites, and fenced pitfall traps and core samples atselected sites. High sulfur contamination and subsequent acidification hada clear negative effect on earthworms, snails, and on several carabid species. Carabid beetles along the sharp acidification gradient in the pine forest were classified as vulnerable (Scaphinotus marginatus, Platynus decentis, Calathus ingratus, Stereocerus haematopus and Pterostichus riparius), resistant (Pterostichus adstrictus, Calathus advena and Agonum placidum) or favored (Amara hyperhorea). Ecological specialists were those most vulnerable to acidification, whereas ecological generalists were resistant. Few species dominated the assemblage at the acidified pine site. Fenced and unfenced pitfall samples produced similar results for carabid beetles and manual devegetation did not affect overall seasonal carabid catches. High levels ofsulfur contamination at the aspen site substantially reduced ground plant cover but not pH and catches of most carabids were similar to the non-polluted aspen site. It is concluded that faunal structure at the acidified pinesites is severely affected negatively and further studies are warranted tostudy the consequences of reduced diversity for ecosystem processes such as organic matter decomposition. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 19:07:20