Publications of Ulrich Sommer

Journal Article (20)

1.
Journal Article
Jaschinski, S.; Gohse-Reimann, S.; Aberle, N.; Brendelberger, H.; Wiltshire, K. H.; Sommer, U.: Grazer diversity effects in an eelgrass-epiphyte-microphytobenthos system. Oecologia 159 (3), pp. 607 - 615 (2009)
2.
Journal Article
Zöllner, E.; Hoppe, H.-G.; Sommer, U.; Jürgens, K.: Effect of zooplankton-mediated trophic cascades on marine microbial food web components (bacteria, nanoflagellates, ciliates). Limnology and Oceanography 54 (1), pp. 262 - 275 (2009)
3.
Journal Article
Sommer, F.; Saage, A.; Santer, B.; Hansen, T.; Sommer, U.: Linking foraging strategies of marine calanoid copepods to patterns of nitrogen stable isotope signatures in a mesocosm study. Marine Ecology Progress Series 286, pp. 99 - 106 (2005)
4.
Journal Article
Becker, C.; Brepohl, D.; Feuchtmayr, H.; Zöllner, E.; Sommer, F.; Clemmesen, C.; Sommer, U.; Boersma, M.: Impacts of copepods on marine seston, and resulting effects on Calanus finmarchicus RNA: DNA ratios in mesocosm experiments. Marine Biology 146 (3), pp. 531 - 541 (2005)
5.
Journal Article
Feuchtmayr, H.; Zöllner, E.; Santer, B.; Sommer, U.; Grey, J.: Zooplankton interactions in an enclosure experiment: insights from stable isotope analyses. Freshwater Biology 49 (11), pp. 1495 - 1504 (2004)
6.
Journal Article
Sommer, U.; Sommer, F.; Feuchtmayr, H.; Hansen, T.: The influence of mesozooplankton on phytoplankton nutrient limitation: A mesocosm study with northeast Atlantic plankton. Protist 155 (3), pp. 295 - 304 (2004)
7.
Journal Article
Sommer, U.; Sommer, F.; Santer, B.; Zöllner, E.; Jürgens, K.; Jamieson, C.; Boersma, M.; Gocke, K.: Daphnia versus copepod impact on summer phytoplankton: functional compensation at both trophic levels. Oecologia 135 (4), pp. 639 - 647 (2003)
8.
Journal Article
Sommer, F.; Hansen, T.; Feuchtmayr, H.; Santer, B.; Tokle, N.; Sommer, U.: Do calanoid copepods suppress appendicularians in the coastal ocean? Journal of Plankton Research 25 (7), pp. 869 - 871 (2003)
9.
Journal Article
Sommer, F.; Santer, B.; Jamieson, C.; Hansen, T.; Sommer, U.: Daphnia population growth but not moulting is a substantial phosphorus drain for phytoplankton. Freshwater Biology 48 (1), pp. 67 - 74 (2003)
10.
Journal Article
Sommer, U.; Sommer, F.; Santer, B.; Jamieson, C.; Boersma, M.; Becker, C.; Hansen, T.: Complementary impact of copepods on phytoplankton. Ecology Letters 4 (6), pp. 545 - 550 (2001)
11.
Journal Article
Flöder, S.; Sommer, U.: Diversity in planktonic communities: An experimental test of the intermediate disturbance hypothesis. Limnology and Oceanography 44 (4), pp. 1114 - 1119 (1999)
12.
Journal Article
Sommer, U.: Phytoplankton competition in Plußsee: a field test of the resource-ratio hypothesis. Limnology and Oceanography 38 (4), pp. 838 - 845 (1993)
13.
Journal Article
Sommer, U.: Phosphorus-limited Daphnia: Intraspecific gacilitation instead of competition. Limnology and Oceanography 37 (5), pp. 966 - 973 (1992)
14.
Journal Article
Sommer, U.: A comparison of the droop and the Monod models of nutrient limited growth applied to natural populations of phytoplankton. Functional Ecology 5 (4), pp. 535 - 544 (1991)
15.
Journal Article
Sommer, U.: Nitrate- and silicate-competition among antarctic phytoplankton. Marine Biology 91, pp. 345 - 351 (1986)
16.
Journal Article
Sommer, U.; Gliwicz, Z. M.; Lampert, W.; Duncan, A.: The PEG-model of seasonal succession of planktonic events in fresh waters. Archiv für Hydrobiologie 106 (4), pp. 433 - 471 (1986)
17.
Journal Article
Sommer, U.: Phytoplankton competition along a gradient of dilution rates. Oecologia 68 (4), pp. 503 - 506 (1986)
18.
Journal Article
Sommer, U.: Near surface nutrient and phytoplankton distribution in the Drake passage during early december. Polar Biology 6 (2), pp. 107 - 110 (1986)
19.
Journal Article
Sommer, U.; Gliwicz, Z.M.: Long range vertical migration of Volvox in tropical Lake Cahora Bassa (Mozambique). Limnology and Oceanography 31 (3), pp. 650 - 653 (1986)
20.
Journal Article
Sommer, U.: Seasonal succession of phytoplankton in Lake Constance. Bioscience 35 (6), pp. 351 - 357 (1985)
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