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Your search keyword '"Praël, Angelika"' showing total 5 results
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5 results on '"Praël, Angelika"'

1. Egg production survey estimates of spawning stock biomass of cod, haddock and plaice in the Irish Sea: 1995, 2000, 2006, 2008 and 2010

Author

Armstrong, Mike, Aldridge, John, Beggs, Steven, Goodsir, Freya, Greenwood, Lorraine, Maxwell, David, Milligan, Steve, Praël, Angelika, Roslyn, Sam, Taylor, Natasha, Walton, Alison, Warren, Elaine, and Witthames, Peter

Subjects
Fisheries and aquaculture, Celtic Seas (ICES Ecoregion)
Abstract

This Working Document summarises the results of applications of the Annual Egg Production Method (Armstrong et al. 2001, Armstrong and Witthames 2012) to estimate spawning stock biomass of cod and plaice in the Irish Sea in 1995, 2000, 2006, 2008 and 2010, and haddock in 2006, 2008 and 2010. This work is conducted jointly between Cefas and AFBI (Belfast). The Marine Institute (Galway) assisted with fecundity estimates in surveys up to 2008.

Published
2023
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5. BEHAVIORAL RESPONSES OF VELIGER LARVAE OF CRASSOSTREA GIGAS TO LEACHATE FROM WOOD TREATED WITH COPPER-CHROME-ARSENIC (CCA): A POTENTIAL BIOASSAY OF SUBLETHAL ENVIRONMENTAL EFFECTS OF CONTAMINANTS.

Author

Praël, Angelika, Cragg, Simon M., and Henderson, Suzanne M.

Abstract

This study examined effects upon swimming behavior of larval oysters (Crassostrea gigas) caused by leachates from timber treated against marine borer attack using CCA (copper, chromium and arsenic bound to the lignocellulose of the wood cells). Early veliger stage larvae were observed to avoid a layer of concentrated Ieachate. No effect of more dilute leachate on swimming behavior of 2-day-old larvae was detected, but 3- and 7-day-old larvae swam two to three times faster in leachate than in plain seawater and moved up and down more in leachate. The concentrations of leachate used in these experiments considerably exceed likely environmental levels, but behavior could be used to assay improvements to the treatment process and to provide data for models of the impact of treated wood structures. The methodology offers a bioassay for assessment of sublethal effects of toxicants. [ABSTRACT FROM AUTHOR]

Published
2001

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