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  • 1995-1999  (95)
  • 1980-1984  (3)
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  • 1
    Online Resource
    Online Resource
    Die Struktur mariner pelagischer Systeme : Ansätze zu einer Synthese von physikoçhemischen und biologischen Betrachtungsweisen (1985-)
    Kiel
    Details Availability
    Keywords: Hochschulschrift
    Type of Medium: Online Resource
    Edition: 2021
    Language: German , English
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  • 2
    Article
    Article
    Ecology and biogeochemistry of the Antarctic Circumpolar Current during austral spring : Southern Ocean JGOFS cruise ANT X/6 of RV Polarstern (1997)
    Associated volumes
    Details Availability
    In: Deep-sea research. Part 2, Topical studies in oceanography, 1997, (1997)
    In: year:1997
    Type of Medium: Article
    Pages: Ill., graph. Darst , 1 CD-ROM
    Language: English
    Note: Deep-sea research : Part 2, Topical studies in oceanography
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  • 3
    Electronic Resource
    Electronic Resource
    Oceanography Bacteria and silica cycling (1999)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 397 (1999), S. 475-476 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As a graduate student who enjoyed counting plankton under the microscope, I felt frustrated when confronted with an occasional sample that contained almost nothing except a few bacteria flitting or gliding about on the slide. The bacteria were apparently responsible for the barrenness of the slide, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/17219
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Biological oceanography Diatoms and the silicate factor (1998)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 391 (1998), S. 224-225 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Over most of the ocean, the amount of new production (net increase in organic matter) by phytoplankton is regulated by the availability in the surface layer of the plant nutrient nitrate. In the so-called ‘high-nitrate, low-chlorophyll’ (HNLC) regions, however, phytoplankton biomass ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/34528
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Importance of iron for plankton blooms and carbon dioxide drawdown in the Southern Ocean (1995)
    [s.l.] : Nature Publishing Group
    Nature 373 (1995), S. 412-415 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The first iron experiments in the Weddell-Scotia Sea5'6 and the Ross Sea7 have shown stimulation of growth by iron; however, other limitations (light and grazing5'6'10'11) were also at play in these near-shore, neritic12 waters where dissolved Fe concentrations4'13'20 commonly exceed ~1 nM, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/373412a0
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Revolution in the ocean (1999)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 401 (1999), S. 647-647 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Plants dominate life on land, but in the sea they are outweighed by animals. The ocean contains less than one per cent of plant biomass, but the proportion for animals is much larger. Yet the annual production of organic matter is about the same on land and in water. The realization that the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/44281
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    Paper (German National Licenses)
    Fulltext
  • 7
    facet.materialart.
    Unknown
    Annual cycle of sedimentation in relation to plankton ecology in western Kiel Bight (1980)
    Taylor & Francis
    In:  Ophelia, Suppl. 1 . pp. 65-76.
    Details
    Publication Date: 2019-02-27
    Description: The annual cycle of sedimentation in Kiel Bight is described from data collected over 3 years with multisample sediment traps. Settling matter was collected from 2 depths (15 and 18 m) in a 20 m water column at 2-4 day intervals. The pattern of sedimentation was alike each year, although considerable differences in the quantity collected were present. Resuspended sediment and primary settling matter originating from the pelagic system (phytoplankton cells, detritus) were the main contributors to the particulate material collected by the traps. High sedimentation rates from November to March were due to resuspended sediment. The composition of this material differed from that of bulk surface sediment due to the selective effect of water movement during resuspension. Peaks in sedimentation of primary material were observed in spring and autumn when the pelagic food web is poorly developed. From May to August sedimentation rates were low although this is the period of high primary production with large standing stocks of plankton. Apparently, organic substance produced here is consumed within the pelagic food web, as herbivore and carnivore populations are well developed and turnover time of particles is short. Sedimentation rates of primary material are estimated to be in the range of 50-65 g C · m-2 · yr-', but in reality year to year differences are probably greater than indicated by this range.
    Type: Article , PeerReviewed
    Format: text
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 8
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    Unknown
    The Plankton Tower. IV. Interactions Between Water Column and Sediment in Enclosure Experiments in Kiel Bight (1982)
    Springer-Verlag
    In:  In: Marine Mesocosms: Biological and Chemical Research in Experimental Ecosystems. , ed. by Grice, G. D. and Reeve, M. R. Springer-Verlag, New York, Heidelberg, Berlin, pp. 205-216.
    Details
    Publication Date: 2016-07-20
    Description: Neritic ecosystems in the boreal zone generally maintain more plankton biomass over a longer period of the year than off-shore systems in the same latitude. Productivity is higher particularly during the summer stratification, between the spring and autumn phytoplankton blooms brought about by nutrients from sources other than pelagic remineralization. Plankton biomass levels maintained by recycling within a pelagic system tend to decrease with time if limiting nutrients bound in sedimenting particles are not replenished. In neritic environments, surface waters can receive nutrients from the land, but depending on water depth and local weather and geomorphology, replenishment can also come from nutrient-rich subthermocline water and sediments. In deeper bodies of water with a steep coastline, such as fjords, the sediment contribution will be less important (Takahashi et al. 1977) than in shallow water systems with more of their sediment surface within the euphotic zone (von Bodungen et al. 1975, Rowe et al. 1975).
    Type: Book chapter , NonPeerReviewed
    Format: text
    DOI: 10.1007/978-1-4612-5645-8_15
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    OceanRep: Book chapter
  • 9
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    Unknown
    Growth and sedimentation of the phytoplankton spring bloom in the Borholm Sea (Baltic Sea) (1981)
    Institut für Meereskunde
    Details
    Publication Date: 2022-05-23
    Description: Results obtained from short-term (8 h to 24 h intervals) measurements of physical, chemical and biological properties of the 70 m water column from an anchor station in the Bornholm Sea over a 10-day period are presented and discussed. Phytoplankton biomass concentration and production rates indicated that the spring bloom was in progress in this period. The onset of the spring bloom occurred prior to the advent of thermal stratification. Peak growth rates, accompanied by nutrient depletion and biomass accumulation in surface layers, were concomitant with calm weather and a cloudless sky after which a part of the population was observed to sink out of the water column unimpeded by the permanent halocline. Maximum sinking rates of the dominant species, Skeletonema costatum, ranged between 30 to 50 m per day during this event. The development of the spring bloom apparently takes place in a series of events during which periods of low production alternate with periods of high production and rapid sedimentation of parts of the population.
    Type: Article , NonPeerReviewed
    Format: text
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    OceanRep: Article in a Scientific Journal - without review
  • 10
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    Physical, chemical and biological oceanography during Polarstern cruise ANT-X/6 (1997)
    PANGAEA
    In:  Supplement to: Smetacek, Victor; de Baar, Hein J W; Bathmann, Ulrich; Lochte, Karin; Rutgers van der Loeff, Michiel M (1997): Ecology and biogeochemistry of the Antarctic circumpolar current during austral spring: Southern Ocean JGOFS Cruise ANT X/6 of R.V. Polarstern. Deep Sea Research Part II: Topical Studies in Oceanography, 44(1-2), 1-21, https://doi.org/10.1016/S0967-0645(96)00100-2
    Details
    Publication Date: 2024-02-01
    Description: The R.V. Polarstern cruise ANT X/6, part of the international Southern Ocean JGOFS programme, investigated phytoplankton spring bloom development and its biogeochemical effects in different water masses of the Atlantic sector of the Southern Ocean: the Polar Frontal region (PFr), the southern Antarctic Circumpolar Current zone (sACC), its boundary with the Weddell Gyre (AWB) and the marginal ice zone (MIZ). The relative roles of physical stability, iron limitation and grazing pressure in enhancing or constraining phytoplankton biomass accumulation were examined. Three sections were carried out between the PFr and the ice edge along the 6°W meridian from early October to late November 1992. This paper summarises the major findings of the cruise and discusses their implications for our understanding of Southern Ocean ecology and biogeochemistry. A major finding was the negligible build-up of plankton biomass and concomitant absence of CO2 drawdown associated with seasonal retreat of the ice cover. In striking contrast to this unexpected poverty of both the MIZ and the frontal region of the AWB, distinct phytoplankton blooms, dominated by different diatom species, accumulated in the PFr. Chlorophyll stocks in the sACC remained monotonously low throughout the study. Our findings confirm those of other studies that frontal regions are the major productive sites in the Southern Ocean and that input of meltwater and associated ice algae to the surface layer from a retreating ice edge is by itself an insufficient condition for induction of phytoplankton blooms. The blooms in the PFr developed under conditions of shallow mixing layers, high iron concentrations and relatively low grazing pressure. However, in all three blooms, high biomass extended to deeper than 70 m, which cannot be explained by either in situ growth or sinking out of a part of the population from the upper euphotic zone. Subduction of adjoining, shallower layers to explain depth distribution is invoked. Despite a clear CO2 drawdown in the Polar Frontal region, the highly variable conditions encountered render reliable estimation of annual CO2 fluxes in the Southern Ocean difficult.
    Keywords: ANT-X/6; AWI_BioOce; Biological Oceanography @ AWI; CT; CTD/Rosette; CTD-RO; DIVERSE; Giant water sampler; GWS; JGOFS; Joint Global Ocean Flux Study; MUC; MultiCorer; Polarstern; PS22; PS22/6-track; PS22/856C1; PS22/857; PS22/857C1; PS22/858C1; PS22/858C2; PS22/859; PS22/859C1; PS22/859C2; PS22/860; PS22/860C1; PS22/860C2; PS22/860C3; PS22/861C1; PS22/861C2; PS22/862; PS22/862C1; PS22/862C2; PS22/863C1; PS22/864; PS22/864C1; PS22/865; PS22/865C1; PS22/865CA1; PS22/866; PS22/866C1; PS22/866C2; PS22/866C3; PS22/866C4; PS22/866C5; PS22/867; PS22/867C1; PS22/868; PS22/868C1; PS22/868C2; PS22/869; PS22/869C1; PS22/869C2; PS22/870; PS22/870C2; PS22/870C3; PS22/870C4; PS22/871; PS22/871C1; PS22/872; PS22/872C1; PS22/872C2; PS22/872C3; PS22/873; PS22/873C1; PS22/873C2; PS22/874; PS22/874C1; PS22/874C2; PS22/874C3; PS22/875; PS22/875C1; PS22/876; PS22/876C1; PS22/876C2; PS22/877; PS22/877C1; PS22/877C2; PS22/877C3; PS22/878; PS22/878C1; PS22/878C2; PS22/879; PS22/879C1; PS22/879C2; PS22/879C3; PS22/879C4; PS22/880C1; PS22/881; PS22/881C1; PS22/882; PS22/882C1; PS22/882C2; PS22/883C1; PS22/885; PS22/885C1; PS22/886; PS22/886C1; PS22/886C10; PS22/886C2; PS22/886C3; PS22/886C4; PS22/886C5; PS22/886C6; PS22/886C7; PS22/886C8; PS22/887; PS22/887C1; PS22/887C2; PS22/887C3; PS22/888C1; PS22/889C1; PS22/890C1; PS22/891; PS22/891C1; PS22/891C2; PS22/891C3; PS22/891C4; PS22/892C1; PS22/893; PS22/893C1; PS22/893C2; PS22/893C3; PS22/894C1; PS22/895C1; PS22/895C2; PS22/895C3; PS22/895C4; PS22/896C1; PS22/897; PS22/897C1; PS22/897C2; PS22/897C3; PS22/898C1; PS22/899; PS22/899C1; PS22/899C2; PS22/899C3; PS22/899C4; PS22/900; PS22/900C1; PS22/901; PS22/901C1; PS22/901C2; PS22/901C3; PS22/901C4; PS22/901C5; PS22/902; PS22/902C1; PS22/903; PS22/903C1; PS22/903C2; PS22/903C3; PS22/903C4; PS22/904C1; PS22/905; PS22/905C1; PS22/905C2; PS22/905C3; PS22/906C1; PS22/907; PS22/907C1; PS22/907C2; PS22/907C3; PS22/907C4; PS22/907C5; PS22/908; PS22/908C1; PS22/908C2; PS22/909; PS22/909C1; PS22/909C2; PS22/910C1; PS22/911; PS22/911C1; PS22/911C2; PS22/912; PS22/912C1; PS22/912C2; PS22/913C1; PS22/914C1; PS22/915; PS22/915C1; PS22/915C2; PS22/915C3; PS22/916; PS22/916C1; PS22/916C2; PS22/916C3; PS22/917; PS22/917C1; PS22/917C2; PS22/917C3; PS22/918; PS22/918C1; PS22/918C2; PS22/918C3; PS22/919; PS22/919C1; PS22/919C2; PS22/919C3; PS22/919C4; PS22/920; PS22/920C1; PS22/921; PS22/921C1; PS22/922; PS22/922C1; PS22/923; PS22/923C1; PS22/924; PS22/924C1; PS22/925; PS22/925C1; PS22/926; PS22/926C1; PS22/927; PS22/927C1; PS22/928; PS22/928C1; PS22/929C1; PS22/930; PS22/930C1; PS22/930C2; PS22/930C3; PS22/931; PS22/931C1; PS22/931C2; PS22/932C1; PS22/933; PS22/933C1; PS22/934; PS22/934C1; PS22/934C2; PS22/934C3; PS22/934C4; PS22/934C5; PS22/934C6; PS22/935C1; PS22/935C2; PS22/936C1; PS22/937C1; PS22/938; PS22/938C1; PS22/939; PS22/939C1; PS22/939C2; PS22/940; PS22/940C1; PS22/941; PS22/941C1; PS22/941C2; PS22/941C3; PS22/942C1; PS22/943; PS22/943C1; PS22/943C2; PS22/943C3; PS22/944C1; PS22/944C2; PS22/945; PS22/945C1; PS22/945C2; PS22/945C3; PS22/945C4; PS22/946C1; PS22/947; PS22/947C1; PS22/947C2; PS22/947C3; PS22/948C1; PS22/949; PS22/949C1; PS22/949C2; PS22/949C3; PS22/949C4; PS22/950C1; PS22/951; PS22/951C1; PS22/951C2; PS22/951C3; PS22/952C1; PS22/953; PS22/953C1; PS22/953C2; PS22/953C3; PS22/954C1; PS22/955C1; PS22/956; PS22/956C1; PS22/956C2; PS22/956C3; PS22/957C1; PS22/958C1; PS22/959C1; PS22/960; PS22/960C1; PS22/960C2; PS22/960C3; PS22/961C1; PS22/962C1; PS22/963C1; PS22/964; PS22/964C1; PS22/964C2; PS22/964C3; PS22/965C1; PS22/966C1; PS22/968C1; PS22/969; PS22/969C1; PS22/969C2; PS22/969C3; PS22/970; PS22/970C1; PS22/971; PS22/971C1; PS22/972; PS22/972C1; PS22/972C2; PS22/972C3; PS22/972C4; PS22/972C5; PS22/973; PS22/973C1; PS22/974C1; PS22/975C1; PS22/976C1; PS22/977; PS22/977C1; PS22/978; PS22/978C1; PS22/978C2; PS22/978C3; PS22/979C1; PS2356-1; PS2357-1; PS2361-1; PS2362-1; PS2363-1; PS2364-1; PS2365-2; PS2366-1; PS2367-1; PS2368-1; PS2369-4; PS2370-4; PS2371-1; PS2372-1; PS2374-2; PS2376-1; Sampling gear, diverse; Scotia Sea, southwest Atlantic; South Atlantic Ocean; Underway cruise track measurements
    Type: Dataset
    Format: application/zip, 43 datasets
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