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	Provedor de dados Serpent (10) ArchiMer (1) Autor MacLean, M. (4) Simard, Yvan (1) Sourisseau, Marc (1) Palavra-chave Meganyctiphanes norvegica (11) Family Euphausiidae (Krill) (10) Gadidae (Cods & Haddocks) (2) Gadus morhua (2) Avoidance (1) Diel vertical migration (1) Feeding (1) Hormathiidae (1) In situ orientation (1) Krill (1) Phylum Ectoprocta (Bryozoa) (1) Porella sp. (1) St Lawrence Estuary (1) Strobe light (1) Target strength (1) Thysanoessa raschi (1) Mais... Tipo do documento Image (6) Video (4) Text (1) Ano 2010 (4) 2009 (1) 2007 (2) 2003 (3) 2002 (1) País United Kingdom (10) France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 11 Primeira ... 1 ... Última Diel changes in acoustic and catch estimates of krill biomass ArchiMer Simard, Yvan; Sourisseau, Marc. Krill-biomass estimates can be compromised by diel variabilities in acoustic backscatter and the catch efficiencies of various nets. This paper describes an effort to quantify these variabilities at fine temporal and spatial scales during a three-day experiment at a fixed location, using high-resolution, stratified Bioness samples and echo-integration, and assuming a fixed distribution of krill orientations. Night-time catches in the krill scattering layer (SL) were 15 times the acoustic estimates. The situation was reversed during daytime, when the acoustic estimates in the SL were 5 times larger than the catches. This collectively resulted in a ±10-dB gradual diel cycle in the difference of vertically integrated biomass from both sampling methods. Use of... Tipo: Text Palavras-chave: Thysanoessa raschi; Target strength; Strobe light; St Lawrence Estuary; Meganyctiphanes norvegica; Krill; In situ orientation; Feeding; Diel vertical migration; Avoidance. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6591.pdf Krill Serpent Swimming Tipo: Video Palavras-chave: Family Euphausiidae (Krill); Meganyctiphanes norvegica. Ano: 2003 URL: http://archive.serpentproject.com/362/ Krill Serpent MacLean, M.. Swimming Tipo: Image Palavras-chave: Family Euphausiidae (Krill); Meganyctiphanes norvegica. Ano: 2010 URL: http://archive.serpentproject.com/1957/ Krill Serpent Swimming, feeding, ROV lights Tipo: Video Palavras-chave: Family Euphausiidae (Krill); Meganyctiphanes norvegica. Ano: 2003 URL: http://archive.serpentproject.com/367/ Krill Serpent Swimming, ROV Tipo: Video Palavras-chave: Family Euphausiidae (Krill); Meganyctiphanes norvegica. Ano: 2003 URL: http://archive.serpentproject.com/438/ General Seabed view Serpent MacLean, M.. General seabed view with a cod fish Gadus morhua, Bryozoan Porella sp. and Krill present probably Meganyctiphanes norvegica found at Lancaster 9 months after drilling. Tipo: Image Palavras-chave: Gadidae (Cods & Haddocks); Phylum Ectoprocta (Bryozoa); Family Euphausiidae (Krill); Porella sp.; Gadus morhua; Meganyctiphanes norvegica. Ano: 2010 URL: http://archive.serpentproject.com/1968/ Krill Serpent Swimming, ROV lights Tipo: Video Palavras-chave: Family Euphausiidae (Krill); Meganyctiphanes norvegica. Ano: 2002 URL: http://archive.serpentproject.com/345/ Krill Serpent Large group swimming Tipo: Image Palavras-chave: Family Euphausiidae (Krill); Meganyctiphanes norvegica. Ano: 2007 URL: http://archive.serpentproject.com/106/ Krill Serpent MacLean, M.. Swimming Tipo: Image Palavras-chave: Family Euphausiidae (Krill); Meganyctiphanes norvegica. Ano: 2010 URL: http://archive.serpentproject.com/1938/ Krill Serpent Large group swimming Tipo: Image Palavras-chave: Family Euphausiidae (Krill); Meganyctiphanes norvegica. Ano: 2007 URL: http://archive.serpentproject.com/102/ Hormathiidae sp. Serpent MacLean, M.. Swimming Tipo: Image Palavras-chave: Gadidae (Cods & Haddocks); Family Euphausiidae (Krill); Hormathiidae; Gadus morhua; Meganyctiphanes norvegica. Ano: 2010 URL: http://archive.serpentproject.com/1939/ Registros recuperados: 11 Primeira ... 1 ... Última

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