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  • INTER-RESEARCH  (2)
  • Berlin : Springer  (1)
  • Oxfordjournals  (1)
  • 2015-2019  (4)
  • 1
    Book
    Book
    Faszination Meeresforschung : ein ökologisches Lesebuch (2017)
    Berlin : Springer
    Details Availability
    Keywords: Meereskunde ; Meeresbiologie ; Meeresökologie ; Aufsatzsammlung ; Meereskunde ; Meeresbiologie ; Meeresökologie
    Description / Table of Contents: Die Themenvielfalt reicht von Flora und Fauna des arktischen Meereises über Mikroplastikmüll im Meer bis hin zur Überfischung und die nachhaltige Nutzung des Meeres. Wichtige Werkzeuge der Mikrobiologen wie Forschungsschiffe, Unterwasserroboter, Gensonden und Datenbanken werden in verständlichen Artikeln beschrieben, Exkurse über die Geschichte und Struktur der meeresbiologischen Forschung in Deutschland runden den Titel ab. (2)
    Type of Medium: Book
    Pages: XXII, 573 Seiten , Illustrationen (überwiegend farbig) , 23.5 cm x 15.5 cm
    Edition: 2. Auflage
    ISBN: 3662497131 , 9783662497135
    URL: http://deposit.d-nb.de/cgi-bin/dokserv?id=a78e9ac141594f769eb30452ae02d967&prov=M&dok_var=1&dok_ext=htm
    URL: http://d-nb.info/1102390682/04
    URL: https://swbplus.bsz-bw.de/bsz860735125cov.jpg
    URL: https://www.springer.com/de/book/9783662497135
    DDC: 577.7
    RVK:
    RB 10405
    RVK:
    WI 9510
    Language: German
    Note: Literaturangaben , Enthält 55 Beiträge
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  • 2
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    Seasonal lipid dynamics of the shrimps Crangon crangon and Pandalus montagui in the German Bight (North Sea) (2019)
    INTER-RESEARCH
    In:  EPIC3Marine Ecology-Progress Series, INTER-RESEARCH, 625, pp. 41-52, ISSN: 0171-8630
    Details
    Publication Date: 2019-10-09
    Description: Environmental fluctuations can impose energetic constraints on organisms in terms of food shortage or compensation for metabolic stress. To better understand the biochemical strategies that support adaptive physiological processes in variable environments, we studied the lipid dynamics of the brown shrimp Crangon crangon and the pink shrimp Pandalus montagui by analysing their midgut glands during an annual cycle. Both species have an overlapping distribu- tion range in the southern North Sea, but differ in their habitat preferences, reproductive strate- gies, and life-history traits. C. crangon showed minor total lipid accumulation in their midgut glands, ranging between 14 and 17% of dry mass (DM), dominated by phospholipids. In contrast, P. montagui stored significantly larger amounts of total lipid (47−70% DM, mainly triacylglycer- ols) and showed a distinct seasonal cycle in lipid accumulation with a maximum in summer. Fatty acid trophic markers indicated a wide food spectrum for both species, with higher preferences of P. montagui for microalgae. In C. crangon, feeding preferences were less distinct due the low total lipid levels in the midgut gland. PCA based on fatty acid compositions of both species suggested that C. crangon has a broader dietary spectrum than P. montagui. C. crangon seems to have the capacity to use sufficient energy directly from ingested food to fuel all metabolic requirements, including multiple spawnings, without building up large lipid reserves in the midgut gland. P. montagui, in contrast, relies more on the energy storage function of the midgut gland to over- come food scarcity and to allocate lipids for reproduction.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev , info:eu-repo/semantics/article
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  • 3
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    Lipid turnover reflects life-cycle strategies of small-sized Arctic copepods (2016)
    Oxfordjournals
    In:  EPIC3Journal of Plankton Research, Oxfordjournals, 38(6), pp. 1420-1432, ISSN: 0142-7873
    Details
    Publication Date: 2016-11-30
    Description: This study aimed at understanding how life-cycle strategies of the primarily herbivorous Pseudocalanus minutus and the omnivorous Oithona similis are reflected by their lipid carbon turnover capacities. The copepods were collected in Billefjorden, Svalbard, and fed with 13C labeled flagellates and diatoms during 3 weeks. Fatty acid (FA) and fatty alcohol compositions were determined by gas chromatography, 13C incorporation was monitored using isotope ratio mass spectrometry. Maximum lipid turnover occurred in P. minutus, which exchanged 54.4% of total lipid, whereas 9.4% were exchanged in O. similis. In P. minutus, the diatom markers 16:1(n-7), 16:2(n-4) and 16:3(n-4) were almost completely renewed from the diet within 21 days, while 15% of the flagellate markers 18:2(n-6), 18:3(n-3) and 18:4(n-3) were exchanged. In O. similis, 15% of both flagellate and diatom markers were renewed. P. minutus exhibited typical physiological adaptations of herbivorous copepod species, with a very high lipid turnover rate and the ability to integrate FAs more rapidly from diatoms than from flagellates. O. similis depended much less on lipid reserves and had a lower lipid turnover rate, but was able to ingest and/or assimilate lipids with the same intensity from various food sources, to sustain shorter periods of food shortage.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 4
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    Seasonal lipid storage and dietary preferences of native European versus invasive Asian shore crabs (2018)
    INTER-RESEARCH
    In:  EPIC3Marine Ecology-Progress Series, INTER-RESEARCH, 602, pp. 169-181, ISSN: 0171-8630
    Details
    Publication Date: 2018-08-24
    Description: The invasive Asian shore crab Hemigrapsus sanguineus and the native European green crab Carcinus maenas share intertidal habitats along European North Atlantic shores and may compete for food. We evaluated the energy-storing capacities of the 2 species and determined their dietary preferences by means of lipid analysis and fatty acid trophic marker indices. Specimens of both sexes and various sizes were sampled in the rocky intertidal of the island of Helgoland (North Sea) in April, June, August, and October 2015. Total lipids of the midgut glands were significantly higher in H. sanguineus than in C. maenas and followed a distinct seasonal cycle in both sexes (ca. 20−50% of dry mass, DM). The lower lipid contents of C. maenas (ca. 20% of DM) remained at a similar level throughout the seasons. The seasonal differences in the females of H. sanguineus may be due to higher reproductive output and, consequently, lipid turnover, but remain unexplained in males. Trophic indices for Bacillariophyceae, Chlorophyta, and especially Phaeophyceae were higher in H. sanguineus than in C. maenas, suggesting a higher degree of herbivory of the invader. In contrast, the Rhodophyta index was higher in C. maenas. Thus, competition for food between the 2 species will probably be low in habitats rich in macroalgae. The ability of H. sanguineus to utilize mainly energy-poor algae but accumulate high-energy reserves may be an advantage for successfully establishing persistent populations in new habitats.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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