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  • 2005-2009  (13)
  • 2000-2004  (3)
  • 1985-1989  (4)
Publikationsart
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Erscheinungszeitraum
Jahr
  • 1
    Online-Ressource
    Online-Ressource
    Microcopepod community structure in the Gulf of Aqaba and northern Red Sea, with special reference to Oncaeidae (2008)
    Dazugehörige Bände
    Details Verfügbarkeit
    In: Journal of plankton research, Oxford : Oxford Univ. Press, 1979, 30(2008), 5, Seite 529-550, 1464-3774
    In: volume:30
    In: year:2008
    In: number:5
    In: pages:529-550
    Beschreibung / Inhaltsverzeichnis: The abundance and vertical distribution of microcopepods sampled by nets with 55 My m mesh size was compared for two neighbouring but hydrographically different areas, the Gulf of Aqaba and the northernmost Red Sea, during spring 1999. The vertical structure of the total microcopepod communities differed considerably between the two regimes: In the stratified waters of the Red Sea, calanoids outnumbered oncaeids as well as oithonids at 0- 100 m, whereas oncaeids dominated in all meso- and bathypelagic layers below 100 m deep. In the unusually deep vertically mixed waters of the Gulf of Aqaba, calanoids outnumbered each of the non-calanoid taxa as deep as 250 or 350 m, whereas the oncaeid dominated deep water community was restricted to depth ranges below 400 m. Dominant non-calanoid species in both areas were Oncaea bispinosa, Paroithona pacifica, Oithona simplex, Spinoncaea ivlevi, O. tregoubovi and O. cristata. O. scottodicarloi occurred in exceptionally high numbers in the northern Gulf. Pronounced differences between the two areas were found in the vertical distribution of poecilostomatoid species. By comparing the present results with published data from the central and southern Red Sea and other tropical and warm-temperate oceanic areas, intra- and inter-oceanic differences in the structure of microcopepod communities in oligotrophic areas are discussed. The high abundance and vertically extended range of calanoid copepods during spring appears to be a specific feature of the Gulf of Aqaba, indicating an unusual vertical succession in the trophodynamic structure of the copepod fauna in this area.
    Materialart: Online-Ressource
    Seiten: graph. Darst
    ISSN: 1464-3774
    DOI: 10.1093/plankt/fbn018
    Sprache: Englisch
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Online-Ressource
    Online-Ressource
    Population dynamics and life strategies of Rhincalanus nasutus (Copepoda) at the onset of the spring bloom in the Gulf of Aqaba (Red Sea) (2008)
    Dazugehörige Bände
    Details Verfügbarkeit
    In: Journal of plankton research, Oxford : Oxford Univ. Press, 1979, 30(2008), 6, Seite 655-672, 1464-3774
    In: volume:30
    In: year:2008
    In: number:6
    In: pages:655-672
    Beschreibung / Inhaltsverzeichnis: Abundance, distribution, population structure, lipid content, lipid composition and reproductive and feeding activity of Rhincalanus nasutus were studied in the Gulf of Aqaba and in the northern Red Sea during RV "Meteor"-cruise M 44-2 in February/March 1999. Rhincalanus nasutus occurred in higher numbers in the Gulf of Aqaba (585 ind m-2) than in the northern Red Sea (254 ind m-2). Young developmental stages (nauplii, copepodite stages CI and CII) were absent. In the southern Gulf of Aqaba, the bulk of the population developed from stage CV to adult in the course of the 3-week study period. In contrast, immature CV stages dominated at the adjacent stations in the northern Gulf of Aqaba and in the northern Red Sea. Development was associated with the seasonal vertical migration from wintering mid-water layers and initiation of feeding starting as early as beginning of March in the southern Gulf of Aqaba. No upward migration was observed in the northern parts of the Gulf and in the northern Red Sea, where more than 90% of the females remained immature during our study. Lipids were dominated by wax esters in females and CV. The fatty acid and fatty alcohol compositions of females were very similar throughout the study region and period. Major fatty acids were 18:1(n-9), 16:1(n-7), 16:2(n-4) and 20:5(n-3). Our results support the previous reports of a seasonal dormancy of R. nasutus in the Gulf of Aqaba and suggest that the timing of vertical migration, feeding and maturation is closely coupled to the development of the spring bloom in oligotrophic subtropical waters.
    Materialart: Online-Ressource
    Seiten: graph. Darst
    ISSN: 1464-3774
    DOI: 10.1093/plankt/fbn029
    Sprache: Englisch
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    Artikel
    Artikel
    Eine virtuelle Reise durch die Weltmeere: Energieflüsse, Nahrungswege und Anpassungspfade (2006)
    Bremen : Hauschild
    Dazugehörige Bände
    Details Verfügbarkeit
    In: Faszination Meeresforschung, Bremen : Hauschild, 2006, (2006), Seite 31-39, 3897573105
    In: 9783897573109
    In: year:2006
    In: pages:31-39
    Materialart: Artikel
    Sprache: Deutsch
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    Online-Ressource
    Online-Ressource
    Verbundprojekt: LAKRIS; Saisonale Populationsdynamik und physiologische Kondition des antarktischen Krill - Euphausia superba - in der Lazarev See : Teilvorhaben 5: Saisonale Lipiddynamik und energetische Anpassungen von E. superba, insbesondere der Juvenil- und Adultstadien ; Abschlussbericht (2009)
    Bremen : Univ., Marine Zoologie
    Details Verfügbarkeit
    Schlagwort(e): Forschungsbericht ; Populationsdynamik ; Euphausia superba ; Lazarev-See ; Lipidstoffwechsel
    Materialart: Online-Ressource
    Seiten: Online-Ressource (38 S., 11,9 MB) , Ill., graph. Darst.
    URL: https://edocs.tib.eu/files/e01fb09/609535250.pdf
    URL: https://doi.org/10.2314/GBV:609535250
    URL: https://edocs.tib.eu/files/e01fb09/609535250l.pdf
    DOI: 10.2314/GBV:609535250
    Sprache: Deutsch
    Anmerkung: Förderkennzeichen BMBF 03F0400B , Unterschiede zwischen der elektronischen Ressource und dem gedruckten Dokument können nicht ausgeschlossen werden. - Auch als gedr. Ausg. vorhanden , Systemvoraussetzungen: Acrobat reader.
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  • 5
    Buch
    Buch
    Zur Bedeutung der Lipide im antarktischen Zooplankton : = On the significance of lipids in Antarctic zooplankton (1988)
    Bremerhaven : Alfred-Wegener-Inst. für Polar- u. Meeresforschung
    Details Verfügbarkeit
    Schlagwort(e): Hochschulschrift ; Antarktis ; Zooplankton ; Lipide ; Südpolarmeer ; Zooplankton ; Lipide
    Materialart: Buch
    Seiten: 129 S. , Ill., graph. Darst.
    Serie: Berichte zur Polarforschung 49
    DDC: 592.0998/9
    RVK:
    RY 20075
    Sprache: Englisch
    Anmerkung: Literaturangaben , Vollst. zugl.: Diss.
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    facet.materialart.
    Unbekannt
    Chlorophyll a concentration during POLARSTERN cruise ARK-VII/2 (2004)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publikationsdatum: 2023-03-16
    Schlagwort(e): ARK-VII/2; AWI_BioOce; Biological Oceanography @ AWI; Chlorophyll a; Date/Time of event; DEPTH, water; Elevation of event; Event label; Fluorometry; Greenland Sea; Latitude of event; Longitude of event; MULT; Multiple investigations; Polarstern; PS17; PS17/098; PS17/099; PS17/100; PS17/102; PS17/103; PS17/104; PS17/105; PS17/106; PS17/107; PS17/108; PS17/109; PS17/110; PS17/111; PS17/112; PS17/113; PS17/114; PS17/115; PS17/116; PS17/117; PS17/118; PS17/119; PS17/120; PS17/121; PS17/122; PS17/123; PS17/124; PS17/125; PS17/126; PS17/127; PS17/128; PS17/129; PS17/130; PS17/131; PS17/132; PS17/134; PS17/135; PS17/136; PS17/137; PS17/138; PS17/139; PS17/140; PS17/141; PS17/142; PS17/143; PS17/144; PS17/145; PS17/146; PS17/147; PS17/148; PS17/149; PS17/151; PS17/152; PS17/153; PS17/161; PS17/162; PS17/163; PS17/164; PS17/165; PS17/166; PS17/167; PS17/168; PS17/169; PS17/170; PS17/171; PS17/172; PS17/173; PS17/174; PS17/175; PS17/176; PS17/177; PS17/178; PS17/179; PS17/180; PS17/181; PS17/182; PS17/183; PS17/184; PS17/185; PS17/186; PS17/187; PS17/188; PS17/189; PS17/190; PS17/191; PS17/192; PS17/193; PS17/194; PS17/195; PS17/196; PS17/197; PS17/198; PS17/199; PS17/200; PS17/201; PS17/202; PS17/203; PS17/204; PS17/205; PS17/206; PS17/207; PS17/208; PS17/209; PS17/210; PS17/211; PS17/212; PS17/213; PS17/214; PS17/215; PS17/216; PS17/217; PS17/218; PS17/219
    Materialart: Dataset
    Format: text/tab-separated-values, 1303 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    facet.materialart.
    Unbekannt
    (Table 1) Fatty acid and fatty alcohol compositions (mass %) of Pseudocalanus minutus in different stages during four seasons (1998-1999) (2007)
    PANGAEA
    Details
    Publikationsdatum: 2024-04-24
    Schlagwort(e): 6,9,12,15-Hexadecatetraenoic acid of total fatty acids; 6,9,12-Hexadecatrienoic acid of total fatty acids; 9,12-Hexadecadienoic acid of total fatty acids; 9-Tetradecenoic acid of total fatty acids; all-cis-3,6,9,12,15-Octadecapentaenoic acid of total fatty acids; all-cis-4,7,10,13,16,19-Docosahexaenoic acid of total fatty acids; all-cis-5,8,11,14,17-Eicosapentaenoic acid of total fatty acids; all-cis-7,10,13,16,19-Docosapentaenoic acid of total fatty acids; all-cis-8,11,14,17-Eicosatetraenoic acid of total fatty acids; all-cis-9,12-Octadecadienoic acid of total fatty acids; APN; Apstein plankton net; cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-7-Hexadecenoic acid of total fatty acids; cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid); cis-9-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); Fatty acids; Fatty acids, standard deviation; Fatty alcohols; Fatty alcohols, standard deviation; Gas chromatography; Heptadecanoic acid of total fatty acids; Hexadecanoic acid of total fatty acids; Hexadecanol of total fatty alcohols; Kongsfjorden_98-99; Kongsfjorden, Spitsbergen, Arctic; Method comment; Octadecanoic acid of total fatty acids; Octadecanol of total fatty alcohols; Pentadecanoic acid of total fatty acids; Sample amount; Season; Species; Stage; Tetradecanoic acid of total fatty acids; Tetradecanol of total alcohols
    Materialart: Dataset
    Format: text/tab-separated-values, 727 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 8
    facet.materialart.
    Unbekannt
    (Table 4) Fatty acid and fatty alcohol compositions (mass %) of Oithona similis in different stages during four seasons (1998-1999) (2007)
    PANGAEA
    Details
    Publikationsdatum: 2024-04-24
    Schlagwort(e): all-cis-4,7,10,13,16,19-Docosahexaenoic acid of total fatty acids; all-cis-5,8,11,14,17-Eicosapentaenoic acid of total fatty acids; all-cis-9,12-Octadecadienoic acid of total fatty acids; APN; Apstein plankton net; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-7-Hexadecenoic acid of total fatty acids; cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid); cis-9-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); Fatty acids; Fatty acids, standard deviation; Fatty alcohols; Fatty alcohols, standard deviation; Gas chromatography; Hexadecanoic acid of total fatty acids; Hexadecanol of total fatty alcohols; Kongsfjorden_98-99; Kongsfjorden, Spitsbergen, Arctic; Method comment; Octadecanoic acid of total fatty acids; Octadecanol of total fatty alcohols; Sample amount; Season; Species; Stage; Tetradecanoic acid of total fatty acids; Tetradecanol of total alcohols
    Materialart: Dataset
    Format: text/tab-separated-values, 465 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 9
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    Seasonal fatty acid and fatty alcohol composition of Pseudocalanus minutus and Oithona similis in Kongsfjorden (Svalbard) (2007)
    PANGAEA
    In:  Supplement to: Lischka, Silke; Hagen, Wilhelm (2006): Seasonal lipid dynamics of the copepods Pseudocalanus minutus (Calanoida) and Oithona similis (Cyclopoida) in the Arctic Kongsfjorden (Svalbard). Marine Biology, 150(3), 443-454, https://doi.org/10.1007/s00227-006-0359-4
    Details
    Publikationsdatum: 2024-04-24
    Beschreibung: Seasonal lipid dynamics of various developmental stages were investigated in Pseudocalanus minutus and Oithona similis. For P. minutus, the dominance of 16:1(n−7), 16:4(n−3) and 20:5(n−3) fatty acids indicated a diatom-based nutrition in spring, whereas 22:6(n−3), 16:0, 18:2(n−6) and 18:1(n−9) pointed to a flagellate-based diet during the rest of the year as well as omnivorous/carnivorous low-level feeding during winter. The shorter-chain fatty alcohols 14:0 and 16:0 prevailed, also reflecting biosynthetic processes typical of omnivores or carnivores. Altogether, the lipid signatures characterized P. minutus as an opportunistic feeder. In contrast, O. similis had consistently high amounts of the 18:1(n−9) fatty acid in all stages and during all seasons pointing to a generally omnivorous/carnivorous/detritivorous diet. Furthermore, the fatty alcohol 20:1(n−9) reached high percentages especially in adult females and males, and feeding on Calanus faecal pellets is suggested. Fatty alcohols, as wax ester moieties, revealed significant seasonal variations in O. similis and a seasonal trend towards wax ester accumulation in autumn in P. minutus. P. minutus utilized its lipid deposits for development in the copepodite stages III and IV and for gonad maturation in CV and females during the dark season. However, CVs and females depended on the spring phytoplankton bloom for final maturation processes and reproduction. O. similis fueled gonad maturation and egg production for reproduction in June by wax esters, whereas reproduction in August/September co-occurred with the accumulation of new depot lipids. Both species revealed significantly higher wax ester levels in deeper (〉50 m) as compared to surface (0–50 m) dwelling individuals related to a descent prior to overwintering.
    Schlagwort(e): APN; Apstein plankton net; Kongsfjorden_98-99; Kongsfjorden, Spitsbergen, Arctic; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158
    Materialart: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 10
    Digitale Medien
    Digitale Medien
    The lipid compositions of high-Antarctic notothenioid fish species with different life strategies (2000)
    Springer
    Polar biology 23 (2000), S. 785-791 
    Details
    ISSN: 1432-2056
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Lipid and fatty acid compositions of five notothenioid fishes from the Antarctic Weddell and Lazarev Seas were investigated in detail with regard to their different modes of life. The pelagic Aethotaxis mitopteryx was the lipid-richest species (mean of 61.4% of dry mass, DM) followed by Pleuragramma antarcticum (37.7%DM). The benthopelagic Trematomus lepidorhinus had an intermediate lipid content of 23.2%DM. The benthic Bathydraco marri (20.8%DM) and Dolloidraco longedorsalis (14.5%DM) belonged to the lipid-poorer species. Triacylglycerols were the major lipid class in all species. Important fatty acids were 16:0, 16:1(n-7), 18:1(n-9), 18:1(n-7), 20:5(n-3) and 22:6(n-3). The enhanced proportions of the long-chain monounsaturated fatty acids, 20:1 and 22:1, in the lipid-rich pelagic fishes clearly reflected the ingestion of the two copepod species, Calanoides acutus and Calanus propinquus, which are the only known Antarctic zooplankters rich in these fatty acids. Although wax esters are the major storage lipid in many prey species, they were absent in all notothenioid fishes studied. Thus, wax esters ingested with prey are probably converted to triacylglycerols via fatty acids or metabolised by the fishes. The enhanced lipid accumulation with increasingly pelagic lifestyle has energetic advantages, especially with regard to improved buoyancy. It is still unknown to what extent these lipids are utilised as energy reserves, since it has been suggested that not only the benthic but also the pelagic Antarctic fishes are rather sluggish, with a low scope for activity and hence low metabolic requirements.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003000000153
    Standort Signatur Einschränkungen Verfügbarkeit
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