Publications

13177 to 13188 of 14026 results

1. Life-cycle phenotypic composition and mortality of Calanoides acutus (Copepoda: Calanoida) in the Scotia Sea: a modelling approach

   A modelling approach was developed to identify the most likely composition of life-cycle phenotypes and mortality rates for Calanoides acutus found within the Scotia Sea. A stage- and age-structured model […]

   Read more of: Life-cycle phenotypic composition and mortality of Calanoides acutus (Copepoda: Calanoida) in the Scotia Sea: a modelling approach

2. Moult cycle-related changes in feeding rates of larval krill Meganyctiphanes norvegica and Thysanoessa spp

   Knowledge of crustacean moulting is derived mainly from benthic decapods, which often show profound changes in physiology and behaviour through the moult cycle. In contrast, euphausiids are suggested to be […]

   Read more of: Moult cycle-related changes in feeding rates of larval krill Meganyctiphanes norvegica and Thysanoessa spp

3. Trophic-level interpretation based on delta15N values: implications of tissue-specific fractionation and amino acid composition

   Stable nitrogen isotope ratios are routinely used to disentangle trophic relationships. Several authors have discussed factors in addition to diet that might contribute to variability in delta(15)N of consumers, but […]

   Read more of: Trophic-level interpretation based on delta15N values: implications of tissue-specific fractionation and amino acid composition

4. Biogeochemistry of a Southern Ocean plankton ecosystem: Using natural variability in community composition to study the role of metazooplankton in carbon and nitrogen cycles

   [1] The pelagic ecosystem around the island of South Georgia is subject to significant interannual variability, and changes in zooplankton community composition can be used as natural ecosystem experiments to […]

   Read more of: Biogeochemistry of a Southern Ocean plankton ecosystem: Using natural variability in community composition to study the role of metazooplankton in carbon and nitrogen cycles

5. Feeding and energy budgets of larval Antarctic krill Euphausia superba in summer

   The physiological condition and feeding activity of the dominant larval stages of Euphausia superba (calyptopis stage III, furcilia stages I and II) were investigated from February to March 2000 at […]

   Read more of: Feeding and energy budgets of larval Antarctic krill Euphausia superba in summer

6. Trophic relationships among Southern Ocean copepods and krill: some uses and limitations of a stable isotope approach

   The use of stable isotopes to study food webs has increased rapidly, but there are still some uncertainties in their application. We examined the delta(15)N and delta(13)C values of Antarctic […]

   Read more of: Trophic relationships among Southern Ocean copepods and krill: some uses and limitations of a stable isotope approach

7. Feeding and energy budgets of Antarctic krill Euphausia superba at the onset of winter. II. Juveniles and adults

   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 […]

   Read more of: Feeding and energy budgets of Antarctic krill Euphausia superba at the onset of winter. II. Juveniles and adults

8. Development of Baltic Sea zooplankton in the presence of a toxic cyanobacterium: a mesocosm approach

   Cyanobacteria blooms are common in the Baltic Sea and are considered to be a poor food source and sometimes toxic to zooplankton. Most experiments demonstrating harmful effects have been short-term […]

   Read more of: Development of Baltic Sea zooplankton in the presence of a toxic cyanobacterium: a mesocosm approach

9. Feeding and energy budgets of Antarctic krill Euphausia superba at the onset of winter. I. Furcilia III larvae

   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 (FIII) larvae […]

   Read more of: Feeding and energy budgets of Antarctic krill Euphausia superba at the onset of winter. I. Furcilia III larvae

10. Seasonal differences in citrate synthase and digestive enzyme activity in larval and postlarval Antarctic krill, Euphausia superba

    Antarctic krill maintain large population sizes despite dramatic seasonal fluctuations in food availability, but the mechanisms for this are still debated. The aim of this study was to compare seasonal […]

    Read more of: Seasonal differences in citrate synthase and digestive enzyme activity in larval and postlarval Antarctic krill, Euphausia superba

11. Ammonium regeneration by Antarctic mesozooplankton: an allometric approach

    Given the importance of copepods in the Southern Ocean food web, there are few assessments of their N budgets or their role in regenerating N. In this study we measured […]

    Read more of: Ammonium regeneration by Antarctic mesozooplankton: an allometric approach

12. Identifying patterns in the diet of mackerel icefish (Champsocephalus gunnari) at South Georgia using bootstrapped confidence intervals of a dietary index

    Ontogenetic, inter-annual and regional variations in diet were investigated for mackerel icefish, Champsocephalus gunnari, in three successive summer seasons around South Georgia. Stomach contents from 2239 C. gunnari (130-560 mm […]

    Read more of: Identifying patterns in the diet of mackerel icefish (Champsocephalus gunnari) at South Georgia using bootstrapped confidence intervals of a dietary index