ARIES—a system for concurrent physical, biological and chemical sampling at sea

Dunn, John; Hall, Chris; Heath, M.; Mitchell, Roland B.; Ritchie, B.J.

doi:10.1016/0967-0637(93)90076-f

Cited by 35 publications

(24 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plankton were sampled with various versions of the ARIES system (Dunn et al, 1993) towed from ''Dana'', ''Scotia'', and ''Discovery'', and with a vertically hauled multi-net from ''Bjarni Saemundsson'' , ''Hudson'', and at OWS Mike. At the coastal TASC time-series sites, samples were collected with vertically hauled bongo nets (Heath et al, 2000b).…”

Section: Methodsmentioning

confidence: 99%

Comparative ecology of over-wintering Calanus finmarchicus in the northern North Atlantic, and implications for life-cycle patterns

Heath

Boyle

Gíslason³

et al. 2004

ICES Journal of Marine Science

113

View full text Add to dashboard Cite

Data from plankton net and Optical Plankton Counter sampling during 12 winter cruises between 1994 and 2002 have been used to derive a multi-annual composite 3-D distribution of the abundance of over-wintering Calanus finmarchicus in a swath across the North Atlantic from Labrador to Norway. Dense concentrations occurred in the Labrador Sea, northern Irminger Basin, northern Iceland Basin, eastern Norwegian Sea, Faroe-Shetland Channel, and in the Norwegian Trench of the North Sea. A model of buoyancy regulation in C. finmarchicus was used to derive the lipid content implied by the in situ temperature and salinity at over-wintering depths, assuming neutral buoyancy. The Faroe-Shetland Channel and eastern Norwegian Sea emerged as having the highest water column-integrated abundances of copepodites, the lowest over-wintering temperature, and the highest implied lipid content. The results are discussed in the context of spatial persistence of populations, seasonal patterns of abundance, and relationships between over-wintering and lipid accumulation in the surface waters

show abstract

Section: Methodsmentioning

confidence: 99%

Comparative ecology of over-wintering Calanus finmarchicus in the northern North Atlantic, and implications for life-cycle patterns

Heath

Boyle

Gíslason³

et al. 2004

ICES Journal of Marine Science

113

View full text Add to dashboard Cite

show abstract

“…Sampling was carried out from the Danish research vessel ''Dana'' during cruises 12/94 (December 1994), 01/95 (January 1995) and 15/96 (November/ December 1996), from the Icelandic research vessel RV ''Bjarni Saemundsson'' during cruise 13/96 (November/ December 1996), and from the Scottish research vessel ''Scotia'' during cruises 20/98 (December 1998) and 19/99 (December 1999). Plankton were sampled with the towed ARIES system (Dunn et al, 1993) (Sea-Bird Electronics 911+), and a water sampling rosette. The OPC data were logged as integrated particle counts over 60 s time intervals (approximately equivalent to 20 m depth intervals) and 40 m intervals of Equivalent Spherical Diameter (ESD) during each deployment.…”

Section: Methodsmentioning

confidence: 99%

Winter distribution of Calanus finmarchicus in the Northeast Atlantic

Heath

Fraser

Gíslason

et al. 2000

ICES Journal of Marine Science

View full text Add to dashboard Cite

Data from plankton sampling and Optical Plankton Counter deployments during six cruises between December of 1994 and 1999 have been used to derive a composite three-dimensional distribution of the abundance of Calanus finmarchicus during winter (December-January) in the Norwegian Sea and Northeast Atlantic. There are two centres of abundance, one in the eastern Norwegian Sea and Faroe-Shetland Channel, associated with the interface between Norwegian Sea Deep Water and Intermediate Water layers, and another in the Irminger Sea southwest of Iceland in association with Labrador Sea Water. In the open Northeast Atlantic, the concentration of wintering animals is around 30% of that in the Norwegian Sea and the vertical distribution ismore diffuse and on average deeper. Modelling studies have shown that the overwinter distribution and transport are key factors determining the spatial persistence of C. finmarchicus but, apart from the data presented here, there is little knowledge of these large-scale properties

show abstract

“…Specimens of C. finmarchicus were collected on a cruise by RV Dana in the Faroe–Shetland Channel in December 1996. Integrated plankton samples were collected in oblique tows from over 1000 m depth, using a 200‐μm mesh size net, attached to the ARIES sampling system (Dunn et al ., 1993). Immediately upon retrieval of the net, C. finmarchicus was sorted from other species under a stereo microscope.…”

Section: Methodsmentioning

confidence: 99%

Lipids, buoyancy and the seasonal vertical migration of Calanus finmarchicus

Visser

Jónasdóttir

1999

Fisheries Oceanography

125

View full text Add to dashboard Cite

The copepod Calanus finmarchicus remains in diapause for up to 5 months in the cold (<0.5°C) deep (>700 m) waters of the Faroe–Shetland Channel of the north‐western approaches to the North Sea. While in diapause, C. finmarchicus has a high lipid content, up to 76% of dry weight, mostly in the form of wax esters. The question we address here is how copepods with such a high content of buoyant lipids can remain in diapause at depth for an extended period of time? The corollary to this is how this lipid content hinders and/or assists the copepods in their seasonal vertical migration? Part of the answer is due to the physical properties of wax esters. These have a thermal expansion and compressibility higher than that of sea water. Thus, depending on their relative composition (i.e. wax esters/water/protein/chitin), a copepod that is positively buoyant in warm surface waters can become neutrally buoyant in cold deep water. We develop a simple three component physical model of a copepod to explore how and where they attain neutral buoyancy, how the lipid content can aid in their ascent, and what fraction of the lipids can be utilized in ascent in gonad/egg formation while maintaining observed ascent rates. As well as being an energy reserve, the results show that rather than being a barrier to vertical migration, wax esters serve as an important regulator of buoyancy.

show abstract

ARIES—a system for concurrent physical, biological and chemical sampling at sea

Cited by 35 publications

References 2 publications

Comparative ecology of over-wintering Calanus finmarchicus in the northern North Atlantic, and implications for life-cycle patterns

Comparative ecology of over-wintering Calanus finmarchicus in the northern North Atlantic, and implications for life-cycle patterns

Winter distribution of Calanus finmarchicus in the Northeast Atlantic

Lipids, buoyancy and the seasonal vertical migration of Calanus finmarchicus

Contact Info

Product

Resources

About