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Diatom fatty acid biomarkers indicate recent growth rates in Antarctic krill
Diatom fatty acid biomarkers indicate growth rates Antarctic krill
2014/5/9
We investigated the relationship between nutritional condition (levels of specific fatty acids) and growth increment (percentage growth per intermoult period, percentage IMP-1) for Antarctic krill (Eu...
Growth rates of Antarctic krill, Euphausia superba: Comparison of the instantaneous growth rate method with nitrogen and phosphorus stoichiometry
Growth rates of Antarctic krill Euphausia superba Comparison of the instantaneous growth rate method with nitrogen phosphorus stoichiometry
2014/5/19
Zooplankton growth rates are hard to measure directly, and proxy measurements are desirable to encompass the variety of species and scales of interest. The growth rate hypothesis of stoichiometric the...
Quantifying habitat-specific diatom production: A critical assessment using morphological and biogeochemical markers in Antarctic marine and lake sediments
Quantifying habitat-specifi c diatom production lake sediments
2014/5/19
Coupling of epipelagic and mesopelagic heterotrophic picoplankton production to phytoplankton biomass in the Antarctic polar frontal region
epipelagic mesopelagic heterotrophic picoplankton production phytoplankton biomass Antarctic polar frontal region
2014/5/19
We assessed relationships between phytoplankton standing stock, measured as chlorophyll a (Chl a), primary production (PP), and heterotrophic picoplankton production (HPP), in the epipelagic zone (0-1...
Elevated levels of dimethylated-sulfur compounds in Lake Bonney, a poorly ventilated Antarctic lake
dimethylated-sulfur compounds Lake Bonney a poorly ventilated Antarctic lake
2014/5/19
Lake Bonney is a permanently ice-covered lake in the McMurdo Dry Valleys, Antarctica. The lake has two chemically stratified lobes (referred to as the east and west lobes), each with distinct biogenic...
Life cycle plasticity and differential growth and development in marine and lacustrine populations of an Antarctic copepod
Life cycle plasticity differential growth and development marine and lacustrine populations Antarctic copepod
2014/5/14
We examined life cycle plasticity in two populations of the copepod Paralabidocera antarctica, one of which inhabits the coastal sea ice belt of Antarctica and the other of which has been isolated in ...
Abundance and distribution of planktonic Archaea and Bacteria in the waters west of the Antarctic Peninsula
Abundance and distribution planktonic Archaea and Bacteria waters west of the Antarctic Peninsula
2014/5/21
Polyribonucleotide probes targeting planktonic archaeal (Group I and II) and bacterial rRNA revealed that Archaea comprised a significant fraction of total prokaryote cell abundance in the marine wate...
On the use of lipid biomarkers in marine food web analyses: An experimental case study on the Antarctic krill, Euphausia superba
lipid biomarkers marine food web analyses
2014/5/21
The application of marker fatty acids to trace the feeding habits of Euphausia superba (krill) has produced
contradictory results. We examined the effects of various diets on the fatty acid compositi...
Ultraviolet damage and counteracting mechanisms in the freshwater copepod Boeckella poppei from the Antarctic Peninsula
Ultraviolet damage counteracting mechanisms freshwater copepod Boeckella poppei Antarctic Peninsula
2014/5/27
The process of ozone depletion over the Antarctic continent has resulted in the increase of incident ultraviolet-B (UVB) radiation, whose effects may be damaging to living organisms. To counteract the...
Feeding and energy budgets of Antarctic krill Euphausia superba at the onset of winter—I. Furcilia III larvae
Feeding and energy budgets Antarctic krill Euphausia superba Furcilia III larvae
2014/5/27
Physiological condition and feeding behavior of furcilia larvae were investigated in autumn (April 1999) in the southwestern Lazarev Sea prior to the critical overwintering period. Furcilia stage III ...
Feeding and energy budgets of Antarctic krill Euphausia superba at the onset of winter—II. Juveniles and adults
Feeding and energy budgets Antarctic krill Euphausia superba Juveniles and adults
2014/5/27
The overwintering success of Euphausia superba is a key factor that dictates population size, but there is uncertainty over how they cope with the scarcity of pelagic food. Both nonfeeding strategies ...
Ammonium excretion by Antarctic krill Euphausia superba at South Georgia
Ammonium excretion Antarctic krill Euphausia superba South Georgia
2014/6/17
Excretion by Antarctic krill Euphausia superba (hereafter ‘‘krill’’) is measured typically in small containers of filtered seawater for 12-24 h, which may cause a reduction of swim...