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  • Other Sources  (26)
  • Articles (OceanRep)  (26)
  • GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel  (12)
  • ASLO (Association for the Sciences of Limnology and Oceanography)
  • American Meteorological Society
  • Springer Nature
  • 1995-1999  (26)
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  • Other Sources  (26)
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  • Articles (OceanRep)  (26)
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  • 1
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    The nutrient stoichiometry of benthic microalgal growth: Redfield proportions are optimal (1999)
    ASLO (Association for the Sciences of Limnology and Oceanography)
    In:  Limnology and Oceanography, 44 . pp. 440-446.
    Details
    Publication Date: 2018-06-25
    Description: Cellular nutrient ratios are often applied as indicators of nutrient limitation in phytoplankton studies, especially the so-called Redfield ratio. For periphyton, similar data are scarce. We investigated the changes in cellular C: N: P stoichiometry of benthic microalgae in response to different levels and types of nutrient limitation and a variety of abiotic conditions in laboratory experiments with natural inocula. C: N ratios increased with decreasing growth rate, irrespective of the limiting nutrient. At the highest growth rates, the C: N ratio ranged uniformly around 7.5. N: P ratios 〈13 indicated N limitation, while N: P ratios 〉22 indicated P limitation. Under P limitation, the C: P ratios increased at low growth rate and varied around 130 at highest growth rates. For a medium with balanced supply of N and P, an optimal stoichiometric ratio of C: N: P = 119 : 17 : 1 could be deduced for benthic microalgae, which is slightly higher than the Redfield ratio (106 : 16 : 1) considered typical for optimally growing phytoplankton. The optimal ratio was stable against changes in abiotic conditions. In conclusion, cellular nutrient ratios are proposed as an indicator for nutrient status in periphyton.
    Type: Article , PeerReviewed
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  • 2
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    RV Akademik M.A. Lavrentyev Cruise 27: cruise report GREGORY, German Russian Expedition for Geological/Geophysical Okhotsk Sea Research, Vladivostok - Pusan - Okhotsk Sea - Pusan - Vladivostok, September 7 - October 12,1995 (1996)
    GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel
    In:  GEOMAR-Report, 060 . GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel, Kiel, pp. 1-66, 152 pp.
    Details
    Publication Date: 2016-08-22
    Type: Report , NonPeerReviewed
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  • 3
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    Fahrtbericht zur Forschungsreise SO101 - CONDOR / Cruise report SO101 - CONDOR, Valparaiso - Chile - Valparaiso, 23.03.95 - 08.05.95 (1995)
    GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel
    In:  GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel, Kiel, 177 pp.
    Details
    Publication Date: 2015-02-17
    Type: Report , NonPeerReviewed
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  • 4
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    GEOMAR Jahresbericht / Annual Report 1997 (1998)
    GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel
    In:  GEOMAR-Report, 070 . GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel, Kiel , 158 pp.
    Details
    Publication Date: 2015-03-09
    Type: Report , NonPeerReviewed
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  • 5
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    GEOMAR Jahresbericht / Annual Report 1994 (1995)
    GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel
    In:  GEOMAR-Report, 040 . GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel, Kiel , 126 pp.
    Details
    Publication Date: 2021-05-26
    Type: Report , NonPeerReviewed
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  • 6
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    GEOMAR Jahresbericht / Annual Report 1995 (1996)
    GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel
    In:  GEOMAR-Report, 050 . GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel, Kiel , 93 pp.
    Details
    Publication Date: 2015-11-25
    Type: Report , NonPeerReviewed
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  • 7
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    GEOMAR Jahresbericht / Annual Report 1996 (1997)
    GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel
    In:  GEOMAR-Report, 061 . GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel, Kiel , 169 pp.
    Details
    Publication Date: 2015-12-11
    Type: Report , NonPeerReviewed
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  • 8
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    Dinoflagellatenzysten als Indikatoren der spät- und postglazialen Entwicklung des Auftriebsgeschehens vor Peru (1996)
    GEOMAR Forschungszentrum für marine Geowissenschaften der Christian-Albrechts-Universität zu Kiel
    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität, Kiel, 137 pp . GEOMAR-Report, 057 . DOI 10.3289/GEOMAR_REP_57_1996 〈http://dx.doi.org/10.3289/GEOMAR_REP_57_1996〉.
    Details
    Publication Date: 2015-05-26
    Type: Thesis , NonPeerReviewed
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  • 9
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    Diversity in planktonic communities: an experimental test of the intertmediate disturbance hypothesis (1999)
    ASLO (Association for the Sciences of Limnology and Oceanography)
    In:  Limnology and Oceanography, 44 . pp. 1114-1119.
    Details
    Publication Date: 2019-09-23
    Description: According to Connell�s intermediate disturbance hypothesis (IDH), diversity within a community is maximal at intermediate frequencies and intensities of disturbances. In order to test the IDH, disturbances of different frequencies and intensities were imposed on natural plankton communities in controlled field experiments. These disturbances consisted of an artificial deepening of the mixed layer, leading to the dilution of epilimnetic populations and to a higher level of nutrients. Intervals between disturbances ranged from 2 to 12 d. Different intensities of disturbance were caused by differences in the experimental mixing depth (150 and 225% of the original epilimnion depth). Investigation focused on the effect that disturbances had on the diversity of natural phytoplankton communities. Additionally, we were interested in determining the effect of grazing by zooplankton. The results of the field experiments show for the first time the applicability of the IDH to phytoplankton within complete planktonic communities. Diversity showed a clear maximum at the intermediate disturbance interval of 6 d. Similarly, species number peaked at intermediate interval length (6-10 d).
    Type: Article , PeerReviewed
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  • 10
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    Simultaneous mooring‐based measurements of seawater CO2 and O2 off Cape Hatteras, North Carolina (1997)
    ASLO (Association for the Sciences of Limnology and Oceanography)
    In:  Limnology and Oceanography, 42 (1). pp. 21-28.
    Details
    Publication Date: 2020-03-20
    Description: We deployed CO2 and O2 sensors on the U.S. continental shelf off Cape Hatteras, North Carolina, during late summer 1994. A continuous 32‐d gas record was obtained at 20 m in 25 m of water, below the thermocline for most of the period. Analysis of the correlation between CO2 and O2 indicates that biological and advective processes dominated the gas variability, with small or insignificant fluxes due to air–sea exchange, vertical eddy diffusion, and carbonate dissolution or formation. The observed O2 : CO2 correlation was 1.39, within the range predicted for the photosynthetic quotient. Photosynthesis and respiration appeared to be tightly coupled, resulting in no net community production in these waters during the late summer. It is evident from these results that the combination of mooring‐based CO2 and O2 measurements will be a powerful tool for studying the marine carbon cycle.
    Type: Article , PeerReviewed
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