Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Characterization of suspended particulate matter surrounding a salmonid net-pen in the Broughton Archipelago, British Columbia
Autore:
Sutherland, TF; Martin, AJ; Levings, CD;
Indirizzi:
Dept Fisheries & Oceans, W Vancouver Lab, W Vancouver, BC V7V 1N6, Canada Dept Fisheries & Oceans W Vancouver BC Canada V7V 1N6 BC V7V 1N6, Canada Lorax Environm Serv, Vancouver, BC V6B 5L1, Canada Lorax Environm Serv Vancouver BC Canada V6B 5L1 ouver, BC V6B 5L1, Canada
Titolo Testata:
ICES JOURNAL OF MARINE SCIENCE
fascicolo: 2, volume: 58, anno: 2001,
pagine: 404 - 410
SICI:
1054-3139(200104)58:2<404:COSPMS>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEDIMENTS; CARBON; INDICATORS; ENRICHMENT; ISOTOPE; ESTUARY; MARINE; IMPACT; FLUXES; FISH;
Keywords:
aquaculture; carbon isotope signature; sedimentation flux; trace metals;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Sutherland, TF Dept Fisheries & Oceans, W Vancouver Lab, 4160 Marine Dr, WVancouver, BC V7V 1N6, Canada Dept Fisheries & Oceans 4160 Marine Dr W Vancouver BC Canada V7V 1N6
Citazione:
T.F. Sutherland et al., "Characterization of suspended particulate matter surrounding a salmonid net-pen in the Broughton Archipelago, British Columbia", ICES J MAR, 58(2), 2001, pp. 404-410

Abstract

A held study was carried out on the central coast of British Columbia in March 1999 to determine particle fluxes arising from a salmonid net-pen during feeding. Water samples were collected within, beside, and at two depths relative to a net-pen and analysed for suspended particulate matter (SPM), major and minor elemental abundance, carbon/nitrogen content, and stable carbon isotopes. Sediment traps were also deployed immediately beside the bottom of the net-pen. The highest mean concentration of SPM (0.6 mg 1 (1)) during the feeding cycle was observed within the central region of the net-pen. Approximately 87% and 30% of the mean SPM were observed at depth and beside the net-pen, respectively. suggesting that transport of suspended particulates was predominantly in the Vertical direction. Sediment trap deployments revealed that sedimentation fluxes of total SPM. carbon. and nitrogen were higher below the farm than ar the control sire located 500 m away. Major and minor elemental analyses of feed pellets and sediment trap contents showed that calcium, phosphorus, sulphur, and strontium were removed within the net-pen system. The feed-specific carbon isotope signature (delta C-13 = -21.4 to -22.0 parts per thousand) was not evident in the trap samples deployed beside the bottom of the net-pen (delta C-13 = -23.4 parts per thousand). suggesting the relative absence of feed pellet particles, isotopic alteration through fish assimilation and/or dilution of the isotope signaturewith other carbon sources. However, a feed-signature was evident in samples collected in the upper water column (depth 5 m). suggesting that delta C-13 might serve as a useful tracer of feed particles.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 14:57:14