Feeding ecology of Greenland halibut and sandeel larvae off West Greenland

Simonsen, C. S.; Munk, Peter; Folkvord, Arild; Pedersen, Søren Anker

doi:10.1007/s00227-005-0172-5

Cited by 26 publications

(16 citation statements)

References 26 publications

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“…a Prey length of maximal preference (Log(prey max )) and b was 2.55 and 0.17 in 4-8-mm larvae (r 2 = 0.34), 2.70 and 0.21 in 9-15-mm larvae (r 2 = 0.21) and 2.92 and 0.28 in 16-25-mm larvae (r 2 = 0.21), respectively. b Prey length to larval length ratio of maximal preference (Log(prey max )) and b was −1.21 and 0.18 in 4-8-mm larvae (r 2 = 0.31), −1.31 and 0.24 in 9-15-mm larvae (r 2 = 0.22) and −1.42 and 0.29 in 16-25-mm larvae (r 2 = 0.23), respectively Penney 1997; Simonsen et al 2006). Cod preferred prey size 4-6 % of their length well within the range found by Munk (1997).…”

Section: Prey Preferencesmentioning

confidence: 98%

Feeding opportunities of larval and juvenile cod (Gadus morhua) in a Greenlandic fjord: temporal and spatial linkages between cod and their preferred prey

et al. 2014

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were highly preferred by cod larger than 9 mm, while the abundant Metridia longa and the non-calanoid copepods contributed less. These findings stress the importance of focusing on abundance of preferred prey when assessing the actual prey availability to young fish. We found a spatio-temporal overlap between cod and their preferred prey, and observations suggest that advection of both zooplankton and cod contributed to this overlap. Hence, the larval feeding opportunities might be sensitive to climate-related changes affecting the circulation patterns in this fjord.

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Section: Prey Preferencesmentioning

confidence: 98%

Feeding opportunities of larval and juvenile cod (Gadus morhua) in a Greenlandic fjord: temporal and spatial linkages between cod and their preferred prey

et al. 2014

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“…In the case of sandeels, the literature indicates that early larval stages < 8 mm long feed exclusively on phytoplankton (Monteleone & Peterson 1986). Although the prey items are similar for all 5 taxa, the relative proportions of prey from gut analysis vary from fish to fish and study to study (Last 1980, Checkley 1982, Cohen & Lough 1983, Fossum 1983, Peterson & Ausubel 1984, Munk & Kiørboe 1985, Simonsen et al 2006. Fish larvae caught by the CPR are very small; Johnson (1977) reported that the larvae of Atlantic mackerel caught by the CPR were < 7 mm long, on average 5 mm.…”

Section: Species Reaction and Adaptation To Environmental Variabilitymentioning

confidence: 99%

Bottom-up effects of climate on fish populations: data from the Continuous Plankton Recorder

Pitois¹,

Lynam²,

Jansen³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…Surprisingly, it is understudied, and the majority of research carried out on the plankton ecology of the system has focused on copepods and fish larvae (Munk et al 2003, Pedersen et al 2005, Simonsen et al 2006, Tang et al 2011). To our knowledge, there are a limited number of studies detailing the microbial food web in these waters and none of them quantify rates of microzooplankton grazing and growth, instead largely inferring microzooplankton grazing from community biomass and equations from the literature (Poulsen & Reuss 2002, Pedersen et al 2005, Arendt et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton growth and microzooplankton grazing along a sub-Arctic fjord (Godthåbsfjord, west Greenland)

Calbet

Riisgaard²,

Saiz³

et al. 2011

Mar. Ecol. Prog. Ser.

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We evaluated the role of microzooplankton (sensu latto, grazers < 500 µm) in determining the fate of phytoplankton production (PP) along a glacier-to-open sea transect in the Greenland subarctic fjord, Godthåbfjord. Based on the distribution of size fractionated chlorophyll a (chl a) concentrations we established 4 zones: (1) Fyllas Bank, characterized by deep chl a maxima (ca. 30 to 40 m) consisting of large cells, (2) the mouth and main branch of the fjord, where phytoplankton was relatively homogeneously distributed in the upper 30 m layer, (3) inner waters influenced by glacial melt water and upwelling, with high chl a concentrations (up to 12 µg l −1 ) in the >10 µm fraction within a narrow (2 m) subsurface layer, and (4) the Kapisigdlit branch of the fjord, ice-free, and characterized with a thick and deep chl a maximum layer. Overall, microzooplankton grazing impact on primary production was variable and seldom significant in the Fyllas Bank and mouth of the fjord, quite intensive (up to >100% potential PP consumed daily) in the middle part of the main and Kapisigdlit branches of the fjord, and rather low and unable to control the fast growing phytoplankton population inhabiting the nutrient rich waters in the upwelling area in the vicinity of the glacier. Most of the grazing impact was on the <10 µm phytoplankton fraction, and the major grazers of the system seem to be > 20 µm microzooplankton, as deducted from additional dilution experiments removing this size fraction. Overall, little or no export of phytoplankton out of the fjord to the Fyllas Bank can be determined from our data.KEY WORDS: West Greenland coast · Sub-Arctic fjord · Plankton community structure · Microzooplankton · GrazingResale or republication not permitted without written consent of the publisher

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Feeding ecology of Greenland halibut and sandeel larvae off West Greenland

Cited by 26 publications

References 26 publications

Feeding opportunities of larval and juvenile cod (Gadus morhua) in a Greenlandic fjord: temporal and spatial linkages between cod and their preferred prey

Feeding opportunities of larval and juvenile cod (Gadus morhua) in a Greenlandic fjord: temporal and spatial linkages between cod and their preferred prey

Bottom-up effects of climate on fish populations: data from the Continuous Plankton Recorder

Phytoplankton growth and microzooplankton grazing along a sub-Arctic fjord (Godthåbsfjord, west Greenland)

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