W. Hagen

Digestive abilities of aquatic and semi-terrestrial crayfishes Cherax destructor and Engaeus sericatus (2007)

Kattner, G., Hagen, W., Lee, R. F., Campbell, R., Deibel, D., Falk-Petersen, S., ...

Saborowski, R., Allardyce, B., Wencke, P., Hagen, W., Linton, S.

Cellulose digestion in terrestrial and marine decapods from Taiwan. (2007)

Stumpp, M., Liu, H-C., Hagen, W., Redecke, L., Linton, S., Saborowski, R.

Effect of a carnivorous diet on the lipids, fatty acids and condition of Antarctic krill, Euphausia superba (2007)

Kattner, G, Jonasdottir, SH, Madsen, ML, Mayzaud, P, Muller-Navarra, D, Nichols, PD, ...

We developed new perspectives to identify important questions and to propose approaches for future research on marine food web lipids. They were related to (i) structure and function of lipids, (ii)...

Hagen, W, Yoshida, T, Virtue, P, Kawaguchi, S, Swadling, KM, Nicol, S, ...

Krill are thought to be predominantly herbivorous, but a heterotrophic diet might be crucial for their growth and survival. To compare the influence of herbivory and carnivory on krill we conducted a...

Effect of a carnivorous diet on the lipids, fatty acids and condition of Antarctic krill, Euphausia superba (2007)

Kattner, G, Jonasdottir, SH, Madsen, ML, Mayzaud, P, Muller-Navarra, D, Nichols, PD, ...

We developed new perspectives to identify important questions and to propose approaches for future research on marine food web lipids. They were related to (i) structure and function of lipids, (ii)...

Hagen, W, Yoshida, T, Virtue, P, Kawaguchi, S, Swadling, KM, Nicol, S, ...

Effect of a carnivorous diet on the lipids, fatty acids and condition of Antarctic krill, Euphausia superba (2007)

Kattner, G, Hagen, W, Lee, RF, Campbell, R, Deibel, D, Falk-Petersen, S, ...

Hagen, W, Yoshida, T, Virtue, P, Kawaguchi, S, Swadling, KM, Nicol, S, ...

Krill are thought to be predominantly herbivorous, but a heterotrophic diet might be crucial for their growth and survival. To compare the influence of herbivory and carnivory on krill we conducted a...

Intra- and interspecific differences in palatability of Arctic macroalgae from Kongsfjorden (Spitsbergen) for two benthic sympatric invertebrates (2006)

Kattner, G, Jonasdottir, SH, Madsen, ML, Mayzaud, P, Muller-Navarra, D, Nichols, PD, ...

We developed new perspectives to identify important questions and to propose approaches for future research on marine food web lipids. They were related to (i) structure and function of lipids, (ii)...

Wessels, H., Hagen, W., Molis, M., Wiencke, C., Karsten, U.

Lipid storage in marine zooplankton (2006)

Lee, R. F., Hagen, W., Kattner, G.

Trophodynamics and Seasonal Cycle of the Copepod Pseudocalanus acuspes in the Central Baltic Sea (Bornholm Basin) evidence from lipid composition (2006)

Peters, J., Renz, J., Boersma, M., Hagen, W.

Does the calanoid copepod Pseudocalanus acuspes retain an arctic life cycle in the Central Baltic Sea? (2006)

Renz, J., Peters, J., Hagen, W.

Foraging ecology of emperor penguins. (2006)

Zimmer, I., Plötz, J., Bornemann, H., Ancel, A., Hagen, W.

Der Säureschutzmantel von Alaria esculenta: assoziative Verteidigung im Kongsfjord, Spitzbergen (2006)

Molis, M., Wessels, H., Hagen, W., Karsten, U., Wiencke, C.

From dormancy to activity: Life cycle strategies of the Arctic copepods Calanus glacialis and C. hyperboreus during the winter-spring transition. (2006)

Niehoff, B., Kreibich, T., Hagen, W.

Physiological adaptations of Temora longicornis females (Crustacea, Copepoda) to changing environmental conditions in the North Sea (2006)

Kreibich, T., Gentsch, E., Hansen, B., Hagen, W., Niehoff, B.

Locomotory activity and exploration behaviour of juvenile European lobsters (Homarus gammarus) in the laboratory (2005)

Mehrtens, F., Stolpmann, M., Buchholz, F., Hagen, W., Saborowski, R.

Food utilization in two crustaceans from Greenland Sea waters (2005)

Kreibich, T., Hagen, W., Saborowski, R.

Reproduktionsstrategien und Ernährungsökologie zweier dominanter Copepodenarten der Nordsee - ein Vergleich (2005)

Laakmann, S., Saborowski, R., Hagen, W.

Spatial and temporal distribution of mesozooplankton in the Gulf of Aqaba and the northern Red Sea in February/March 1999 (2005)

Cornils, A., Schnack-Schiel, S. B., Hagen, W, Dowidar, M., Stambler, N., Plähn, O., ...

TROPHODYNAMICS AND LIFE CYCLE STRATEGIES OF THE COPEPOD PSEUDOCALANUS ACUSPES IN THE CENTRAL BALTIC SEA - EVIDENCE FROM LIPID COMPOSITION (2005)

Peters, J., Renz, J., Van Beusekom, J., Boersma, M., Hagen, W.

Spatial and temporal distribution of mesozooplankton in the Gulf of Aqaba and the northern Red Sea in February/March 1999 (2005)

Cornils, A., Schnack-Schiel, S.B., Hagen, W., Dowidar, M., Stambler, N., Plähn, O., ...

The distribution pattern, taxonomic composition and community structure of mesozooplankton was studied along a transect with 10 positions between the Gulf of Aqaba and the northern Red Sea. Five...

Spatial and temporal distribution of mesozooplankton in the Gulf of Aqaba and the northern Red Sea in February/March 1999 (2005)

Cornils, A., Schnack-Schiel, S. B., Hagen, W., Dowidar, M., Stambler, N., Plähn, O., ...

The distribution pattern, taxonomic composition and community structure of mesozooplankton was studied along a transect with 10 positions between the Gulf of Aqaba and the northern Red Sea. Five...

Changes in biomass, lipid, fatty acid and elemental composition during the abbreviated larval development of the subantarctic shrimp Campylonotus vagans (2004)

Thatje, S., Lovrich, G.A., Torres, G., Hagen, W., Anger, K.

Ontogenetic changes in biomass and chemical composition were studied in the laboratory during the abbreviated larval and early juvenile development of the caridean shrimp Campylonotus vagans from the...

Changes in biomass, lipid, fatty acid and elemental composition during abbreviated larval development of the subantarctic shrimp Campylonotus vagans (2004)

Thatje, S., Lovrich, G. A., Torres, G., Hagen, W., Anger, K.

Trophic interactions between macroalgae and herbivores from Kongsfjorden (Svalbard) (2004)

Wessels, H., Hagen, W., Wiencke, C., Karsten, U.

Are exceptional lipids responsible for the evolutionary success of the pteropod genus Clione (Gastropoda) in Antarctic and Arctic waters? (2004)

Böer, M., Gannefors, C., Kattner, G, Graeve, M., Hagen, W., Falk-Petersen, S.

Seasonality of lipid composition - indication of food quality and trophodynamics in Baltic Sea copepods? (2004)

Peters, J., Renz, J., Hagen, W.

On the nutritional condition and lipid composition of three different trophic level components (seston, copepods, sprat larvae) in the Bornholm Basin, Baltic Sea (2004)

Peters, J., Dutz, J., Renz, J., Hagen, W.

Defence-mechanisms against grazing in Arctic macoalgae of the Kongsfjord/Spitsbergen (2003)

Wessels, H., Hagen, W., Wiencke, C., Karsten, U.

Fatty Acid Trophic Markers in the Pelagic Marine Environment (2003)

Dalsgaard, J., St. John, M., Kattner, G., Müller-Navarra, D., Hagen, W.

Seasonality of lipid composition - indication of food quality and trophodynamics in Baltic Sea copepods? (2003)

Peters, J., Renz, J., Hagen, W.

L-Asparaginase-associated hyperlipidemia with hyperviscosity syndrome in a patient with T-cell lymphoblastic lymphoma (2003)

Meyer, B., Hagen, W., Scheithauer, W., Öhler, L., Kornek, G. V.

Feeding and energy budget of Antarctic krill Euphausia superba at the onset of winter - I. Furcilia III larvae - (2002)

Meyer, B., Atkinson, A., Stübing, D., Oettl, B., Hagen, W., Bathmann, U.

Feeding and energy budget of Antarctic krill Euphausia superba at the onset of winter - II. Juveniles and adults - (2002)

Atkinson, A., Meyer, B., Bathmann, U., Stübing, D., Hagen, W., Schmidt, K.

Grazing during early spring in the Gulf of Aqaba and the Northern Red Sea (2002)

Sommer, U., Böttger-Schnack, R., Cornils, A., Hagen, W., Hansen, T., ...

Feeding and energy budgets of Antarctic krill Euphausia superba at the onset of winter in the Lazarev Sea (juveniles, adults furcilia III larvae) (2002)

Meyer, B., Atkinson, A., Stübing, D., Hagen, W., Bathmann, U.

The Role of Lipids in the Life Strategies of the Antarctic Krill (2002)

Hagen, W., Kattner, G., Stübing, D.

Variability and biosynthesis of lipids in polar zooplankton and their energetic value in the ecosystem (2002)

Antarctic euphausiids (krill): Life strategies, lipid metabolism and role in the ecosystem (2002)

Lipid metabolism of the Antarctic krill Euphausia superba and its ecological implications (2001)

Hagen, W., Kattner, G., Terbrüggen, A., Vleet, Van E.S.

The microcopepod fauna in the Gulf of Aqaba, northern Red Sea: species diversity and distribution of Oncaeidae (Poecilostomatoida) (2001)

Böttger-Schnack, R., Hagen, W., Schnack-Schiel, S.B.

Life Strategies and lipid metabolism of Antarctic euphausiids (krill) (2001)

Membrane adaptation in Antarctic and Arctic euphausiids: modulation of lipid class and fatty acid compositions - a temperature adaptation (2001)

Böer, M., Stübing, D., Hagen, W., Kattner, G.

The microcopepod fauna in the Gulf of Aqaba, northern Red Sea: species diversity and distribution of Oncaeidae (Poecilostomatoida) (2001)

Böttger-Schnack, R., Hagen, W., Schnack-Schiel, S. B.

A total of 23 species and three groups of form variants of oncaeid copepods have been identified, which were collected in small mesh net samples taken along a transect from the northernmost Red Sea...

Lipids, trophic relationships, and biodiversity in Arctic and Antarctic krill (2000)

Falk-Petersen, S., Hagen, W., Kattner, G., Clarke, A., Sargent, J.

The lipid compositions of high-Antarctic notothenioid fish species with different life strategies (2000)

Hagen, W., Kattner, G., Friedrich, C.

Distribution and ecophysiology of zooplankton (2000)

Schiel, S., Hagen, W., Dowidar, M., Richter, C.

Exceptional lipids and fatty acids in the pteropod Clione limacina (2000)

The potential of fatty acids as biomarkers. (1999)

Lipids - key components of dominant species of Arctic and Antarctic krill (1999)

Falk-Petersen, S., Hagen, W., Kattner, G., Clarke, A., Sargent, J. R.

The role of lipids in relation to the ecology and biodiversity or Arctic and Antarctic krill (1999)

Falk-Petersen, S., Hagen, W., Kattner, G., Clarke, A., Sargent, J. R.

Scientific cruise report of the Arctic Expedition ARK-XIII/1 of RV "Polarstern" in 1997 = Wissenschaftlicher Fahrtbericht über die Arktis-Expedition ARK-XIII/1 von 1997 mit FS "Polarstern" (1998)

Spindler, M. (ed), Hagen, W. (ed), Stübing, D. (ed)

Lipid metabolism of the Antarctic euphausiid Thysanoessa macrura and its ecological implications (1998)

Hagen, W., Kattner, G.

Lipid metabolism of the Antarctic euphausiid Euphausia crystallorophias and its ecological implications (1998)

Exceptional lipids and fatty acids in the pteropod Clione limacina (Gastropoda) from both polar oceans (1998)

Kattner, G., Hagen, W., Graeve, M., Albers, C.

Breaking the ice, large scale distribution of mesozooplankton after a decade of Arctic and transpolar cruises (1998)

Mumm, N., Auel, H., Hanssen, H., Hagen, W., Richter, C.

Seasonal carbon dynamics of Antarctic copepods in the eastern Weddell Sea (1998)

Schnack-Schiel, S. B., Hagen, W., Mizdalski, E.

Scientific cruise report of the Arctic expedition ARK-XIII/1 of RV "Polarstern" in 1997 (1998)

Spindler, M., Hagen, W.

Life cycle strategies and the lipid diversity of polar zooplankton. (1998)

Hagen, W., Kattner, G., Sargent, J. R., Falk-Petersen, S.

Exceptional lipids and fatty acids in the pteropod Clione limacina (1998)

Energetische Anpassungen an eine extreme Umwelt: Zur Rolle der Lipide im polaren Zooplankton (1998)

Hagen, W., Kattner, G.

Life Strategies and Lipid Metabolism of Polar Copepods (1998)

The compositions of wax esters, triacylglycerols and phospholipids in Arctic and Antarctic copepods: evidence of energetic adaptations (1996)

Albers, C.S., Kattner, G., Hagen, W.

Seasonal lipid dynamics of dominant Antarctic krill species (1996)

Hagen, W., Kattner, G., Vleet, E. S. Van.

Seasonal lipid dynamics in dominant Antarctic copepods. Energy for overwintering or reproduction? (1996)

Hagen, W., Schnack-Schiel, S. B.

Seasonal lipid storage as overwintering strategy of Antarctic krill (1996)

Hagen, W., Vleet, E.S. Van, Kattner, G.

Lipid biosynthesis in Antarctic krill (1996)

Antarctic krill Thysanoessa macrura fills a major gap in marine lipogenic pathways (1996)

Kattner, G., Hagen, W., Falk-Petersen, S., Sargent, J. R., Henderson, R. J.

On the lipid biochemistry of polar copepods: compositional differences in the Antarctic calanoids Euchaeta antarctica and Euchirella rostromagna (1995)

Hagen, W., Kattner, G., Graeve, M.

Polar herbivorous copepods - different pathways in lipid biosynthesis (1995)

Life-cycle strategies of Calanoides acutus, Calanus propinquus and Metridia gerlachei (Copepoda Calanoida) in the eastern Weddell Sea, Antarctica (1995)

Schnack-Schiel, S. B., Hagen, W.

Herbivorous or omnivorous? On the significance of lipid compositions as trophic markers in Antarctic copepods (1994)

Graeve, M., Hagen, W., Kattner, G.

Diet-induced changes in the fatty acid composition of Arctic herbivorous copepods: Experimental evidence of trophic markers (1994)

Graeve, M., Kattner, G., Hagen, W.

The northeast water polynya, Greenland Sea III. Meso- and macrozooplankton distribution and production of dominant herbivorous copepods during spring. (1994)

Hirche, H-J., Hagen, W., Mumm, N., Richter, C.

Ontogenetic and seasonal changes in lipid and fatty acid/alcohol compositions of the dominant Antarctic copepods Calanus propinquus, Calanoides acutus and Rhincalanus gigas (1994)

Life cycle strategies and seasonal variations in distribution and population structure of four dominant calanoid copepod species in the eastern Weddell Sea, Antarctica (1994)

Schnack-Schiel, S. B., Hagen, W.

Calanoides acutus and Calanus propinquus, Antarctic copepods with different lipid storage modes via wax esters or triacylglycerols (1993)

Hagen, W., Kattner, G., Graeve, M.

Zooplankton (1993)

Schiel, S., Hagen, W., Klauke, U., Miszdalski, E., Pagès, F., Probyn, T., ...

Seasonal comparison of Calanoides acutus and Calanus propinquus (Copepoda Calanoida) in the southeastern Weddell Sea, Antarctica (1991)

Schnack-Schiel, S. B., Hagen, W., Mizdalski, E.

Zur Bedeutung der Lipide im antarktischen Zooplankton = On the significance of lipids in Antarctic zooplankton (1988)

Zur Bedeutung der Lipide im antarktischen Zooplankton (1988)

Evidence for an unusual mechanism of membrane translocation of the periplasmic hydrogenase of Desulfovibrio vulgaris as derived from expression in E. coli. (1988)

Hagen, W., Veeger, C.

Zooplankton (1987)

Fransz, H. G., Hagen, W., Hempel, I., Marschall, H. P., Marschall, S., Mizdalski, E., ...

Heterokrohnia longicaudata, a new species of Chaetognatha from Antarctic waters (1986)

Hagen, W., Kapp, H.

On the distribution and population structure of Antarctic Chaetognatha (1985)

Two new species of Heterokrohnia (Chaetognatha) from Antarctic waters (1985)

Kapp, H., Hagen, W.

Zooplankton (1985)

Fevolden, S., Hagen, W., Hempel, I., Mizdalski, E., Schnack, S. B., Spindler, M., ...

The three micron 'ice' band in grain mantles (1983)

A laboratory study of the infrared spectra of interstellar ices (1983)

The three micron 'ice' band in grain mantles (1983)

A laboratory study of the infrared spectra of interstellar ices (1983)

Model calculations of the molecular composition of interstellar grain mantles (1982)

Model calculations of the molecular composition of interstellar grain mantles (1982)