Protozoans as a food source for Antarctic krill, Euphausia superba: Complementary insights from stomach content, fatty acids, and stable isotopes

By K. Schmidt, A. Atkinson, K. Petzke, M. Voss, D. Pond. 2006

169 citations recorded by the source corpus.

Subfields: Ecology, Global and Planetary Change, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/bb2724200d0d3648e96aae20f44b533dfec23ba3

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Ecology

1. B. Popp
2. A. Atkinson
3. C. Hannides
4. P. Ward
5. N. Ogawa
6. N. Ohkouchi
7. Y. Chikaraishi
8. M. Landry

In Global and Planetary Change

1. A. Atkinson
2. B. Meyer
3. B. Popp
4. V. Siegel
5. K. Schmidt
6. E. Murphy
7. P. Ward
8. Geraint A. Tarling

In Nature and Landscape Conservation

1. B. Meyer
2. A. Atkinson
3. V. Siegel
4. K. Schmidt
5. P. Ward
6. R. Ross
7. L. Quetin
8. D. Pond

Citations in the corpus

• Isotopic niches of emperor and Adélie penguins in Adélie Land, Antarctica (2008, background): “Both species eat primarily phytoplankton, with a substantial contribution of heterotrophic food that varies according to season and location (Nicol et al. 2004; Schmidt et al. 2006).”
• Quantification of zooplankton trophic position in the North Pacific Subtropical Gyre using stable nitrogen isotopes (2009, background): “We include animals from the subtropical and eastern-tropical North Pacific (this study; Popp et al. 2007), the Southern Ocean (Schmidt et al. 2006), and a culture system (McClelland and Montoya 2002).”
• Prey dominance shapes trophic structure of the northern California Current pelagic food web: evidence from stable isotopes and diet analysis (2010, background): “This capacity has been observed in other 22 Miller et al.: Prey dominance and trophic structure euphausiid species (Rau et al. 1991, Schmidt et al. 2006).”
• 15N/14N ratios of amino acids as a tool for studying terrestrial food webs: a case study of terrestrial insects (bees, wasps, and hornets) (2011, background): “Consequently, the CSIA of amino acids has been used to elucidate the trophic position of organisms in recent ecological studies of shrimp in the sub-Antarctic archipelago (Pakhomov et al. 2004), krill in the Antarctic ( Schmidt et al. 2004, 2006 ), plankton in the central Pacific (McCarthy et al. 20”
• Feeding and overwintering of Antarctic krill across its major habitats: The role of sea ice cover, water depth, and phytoplankton abundance (2014, methodology): “Especially during summer does the lipid content of adult males and gravid females deviate from other krill, whereas differences between juveniles and subadult males or subadult females are minor (Hagen et al. 2001; Schmidt et al. 2006).”
• An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (2012, methodology): “No one approach is entirely satisfactory, but since they are independent, have their specific strengths and weaknesses, and integrate over different time periods, the most powerful approach is to use multiple methods (Båmstedt et al., 2000; Schmidt et al., 2006).”
• Variable food absorption by Antarctic krill: Relationships between diet, egestion rate and the composition and sinking rates of their fecal pellets (2012, background): “These are reported in Schmidt et al. (2012).”
• Physiology, growth, and development of larval krill Euphausia superba in autumn and winter in the Lazarev Sea, Antarctica (2009, background): “It has to be stressed here that the items with hard parts that we counted in the stomach are only a subset of the total krill diet (Schmidt et al. 2006).”
• Oceanic circumpolar habitats of Antarctic krill (2008, background): “Even so, krill were able to grow by exploiting the microbial food web instead (Schmidt et al. 2006).”
• Characterizing dietary variability and trophic positions of coastal calanoid copepods: insight from stable isotopes and fatty acids (2009, background): “High proportions of 18:1n-9 to 18:1n-7 denote carnivory in copepods, amphipods and krill (Hagen et al. 2007; Stevens et al. 2004b; Nyssen et al. 2005; Schmidt et al. 2006).”
• Biogeographic Atlas of the Southern Ocean (2014, background): “During their pelagic life in the open Antarctic Ocean, Antarctic krill feed on any preys items, including protists (Schmidt et al. 2006), but the diet may shift preferentially to copepods (Granelli et al. 1993, Mayzaud et al. 1998), and even to the micro-fauna of the sea-bed sediment (Schmidt et…”
• Seabed foraging by Antarctic krill: Implications for stock assessment, bentho‐pelagic coupling, and the vertical transfer of iron (2011, methodology): “Further details are given in Schmidt et al. (2006).”
• Determination of aquatic food‐web structure based on compound‐specific nitrogen isotopic composition of amino acids (2009, background): “Ice algae (a mixture of Chlorella sp., Raphidonema nivale, and Chloromonas sp.) were collected from Langhovde, Antarctica (69°53′S, 39°48′E) during the activities of the summer party of the 47th Japan Antarctica Research Expedition from December 2005 to February 2006.”
• Isotopic invisibility of protozoan trophic steps in marine food webs (2014, background): “We are aware, however, that others have shown an elevated AA–CSIA trophic signal for Antarctic krill, which were observed to be feeding on heterotrophic protists (Schmidt et al. 2006).”