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  • 1
    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
    Description / Table of Contents: 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.
    Type of Medium: Online Resource
    Pages: graph. Darst
    ISSN: 1464-3774
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Polar biology 15 (1995), S. 583-586 
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Zooplankton was sampled at a diurnal station during the drift of the Ice Station Weddell-1 in the western Weddell Sea in March 1992. Gut contents of Metridia gerlachei, Calanoides acutus, Calanus propinquus and Rhincalanus gigas were studied. Calanoides acutus was trophically inactive, but 18%, 33% and 45% of Calanus propinquus, R. gigas and M. gerlachei, respectively, contained food in their guts. Diel changes in gut levels and percentage of individuals with full guts with maximum during the dark period were observed in M. gerlachei copepodite stage V and females. The possible reasons for observed differences in foraging patterns of the four copepod species are discussed.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2023-05-12
    Keywords: AK43-4948B; Archive of Ocean Data; ARCOD; Body mass as carbon; Calculated; DM38-3480; DM38-3519; DM38-3529; East Atlantic; East Pacific; Event label; Latitude of event; Longitude of event; Maturation stage; MULT; Multiple investigations; Pacific Ocean; Ratio; Respiration rate, carbon; Species; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 98 data points
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  • 4
    Publication Date: 2023-05-12
    Keywords: Abundance per volume; Archive of Ocean Data; ARCOD; Calculated; Chlorophyll a, areal concentration; Daily ration of carbon; Daily ration of chlorophyll; Depth, bottom/max; Depth, top/min; DM38-3480; DM38-3519; DM38-3529; East Pacific; Event label; Gender; Laser spectrofluorometry; Latitude of event; Longitude of event; Maturation stage; MULT; Multiple investigations; Pacific Ocean; Phytoplankton carbon consumption, total; Phytoplankton chlorophyll consumption, total; Species
    Type: Dataset
    Format: text/tab-separated-values, 91 data points
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  • 5
    Publication Date: 2023-05-12
    Keywords: Abundance per volume; AK43-4948B; Archive of Ocean Data; ARCOD; Calculated; Chlorophyll a, areal concentration; Daily ration of carbon; Daily ration of chlorophyll; East Atlantic; Gender; Laser spectrofluorometry; Maturation stage; MULT; Multiple investigations; Phytoplankton chlorophyll consumption, total
    Type: Dataset
    Format: text/tab-separated-values, 19 data points
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  • 6
    Publication Date: 2023-05-12
    Keywords: 14C in-situ incubation; AK43-4948B; Archive of Ocean Data; ARCOD; Calculated; Chlorophyll a; Depth, bottom/max; Depth, top/min; DM38-3480; DM38-3519; DM38-3529; East Atlantic; East Pacific; Event label; Laser spectrofluorometry; Latitude of event; Longitude of event; MULT; Multiple investigations; Pacific Ocean; Phytoplankton carbon consumption, total; Phytoplankton chlorophyll consumption, total; Primary production of carbon; Ratio; Species
    Type: Dataset
    Format: text/tab-separated-values, 33 data points
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  • 7
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    PANGAEA
    In:  Supplement to: Pasternak, Anna F; Kopylov, A I (1983): The role of necrophagous infusorians, Colpoda, in the planktic community of the Black Sea coastal waters. Oceanology, 23(2), 240-243
    Publication Date: 2023-05-12
    Description: The life cycle of infusorians belonging to genus Colpoda, dormant cysts of which were found on planktic crustaceans of the Black Sea coastal waters, is described. Population strength of Colpoda is maximum in autumn. The infusorians had no harmful effect on their host. It has been noted that Colpoda enhances decomposition of dead animals.
    Keywords: Archive of Ocean Data; ARCOD; Black Sea; BlueBay; DATE/TIME; MULT; Multiple investigations; Paracalanus parvus; Percentage
    Type: Dataset
    Format: text/tab-separated-values, 49 data points
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  • 8
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    PANGAEA
    In:  Supplement to: Drits, Alexander V; Pasternak, Anna F; Semenova, Tatyana N; Flint, Mikhail V (1990): Feeding of herbivorous copepods in upwelling areas. Diurnal rhythms, rations and consumption of phytoplankton. Oceanology, 30(2), 229-235
    Publication Date: 2023-05-12
    Description: Feeding patterns of mass herbivorous copepods in upwelling areas are investigated. Daily rations and aspects of their formation are examined in Calanoides carinatus (Benguela upwelling), Calanus pacificus (off the California coast), and Calanus australis (Peru upwelling). Rations were calculated based on gut plant pigment contents obtained at daily stations using laser spectrofluorometry, experimental data on the rate of gut evacuation and data on the carbon/chlorophyll ratio in phytoplankton and particulate matter at the respective stations. When phytoplankton was abundant, diel feeding rhythms were not pronounced and gut pigment level was high during the entire 24-h period. When phytoplankton biomass was low, distinct feeding rhythms were pronounced with a nocturnal maximum. During active upwelling intensive feeding on phytoplankton supports energy (respiration) and plastic (growth, development, reproduction, accumulation of reserves) metabolism of copepods. When upwelling was inactive, the surface part of the population feeds less actively and is able only partially to cover its energy expenditures. The actively growing and reproducing populations of C. pacificus and C. carinatus may consume close to 20% of primary production, whereas the inactive population of C. australis consumed only 0.2% of primary production when upwelling weakened.
    Keywords: AK43-4948B; Archive of Ocean Data; ARCOD; DM38-3480; DM38-3519; DM38-3529; East Atlantic; East Pacific; MULT; Multiple investigations; Pacific Ocean
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 9
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    Unknown
    PANGAEA
    In:  Supplement to: Michels, Jan; Schnack-Schiel, Sigrid B; Pasternak, Anna F; Mizdalski, Elke; Isla, Enrique; Gerdes, Dieter (2012): Abundance, population structure and vertical distribution of dominant calanoid copepods on the eastern Weddell Sea shelf during a spring phytoplankton bloom. Polar Biology, 35(3), 369-386, https://doi.org/10.1007/s00300-011-1083-1
    Publication Date: 2024-03-06
    Description: The main emphasis of this study was to analyse the short-term development of abundance, population structure and vertical distribution of the dominant calanoid copepods during a phytoplankton bloom in the coastal area of the eastern Weddell Sea in December 2003. Microcalanus pygmaeus was by far the most abundant calanoid species. Metridia gerlachei, Ctenocalanus citer, Calanoides acutus, Calanus propinquus and the ice-associated Stephos longipes were also present in considerable proportions. The observed changes in the population characteristics and parameters of these species are described in detail and discussed in the context of the spring phytoplankton bloom. A conspicuous event occurring during the final stage of the study was the development of a strong storm. While the results suggest that this storm did not have any considerable influence on the populations of all other investigated copepod species, it very likely caused pronounced changes in the S. longipes population present in the water column. Before the storm, S. longipes was found primarily in the upper 100 m of the water column, and its population was dominated by adults (mean proportion = 41%) and the copepodite stage I (mean proportion = 30%). After the storm, the abundance increased considerably, and the copepodite stage I contributed by far the largest proportion (53%) of the total population indicating that the early copepodite stages probably had been released from the sea ice into the under ice water layer due to ice break-up and ice melt processes caused by the storm.
    Keywords: Aetideopsis minor, copepodites; Aetideopsis minor, female; Aetideopsis spp., copepodites; Aetideus australis, copepodites; Aetideus australis, male; Amallothrix dentipes, copepodites; ANT-XXI/2; AWI_BPP; Bentho-Pelagic Processes @ AWI; Calanoida indeterminata, copepodites; Calanoides acutus, c1; Calanoides acutus, c2; Calanoides acutus, c3; Calanoides acutus, c4; Calanoides acutus, c5; Calanoides acutus, female; Calanoides acutus, male; Calanus propinquus, c1; Calanus propinquus, c2; Calanus propinquus, c3; Calanus propinquus, c4; Calanus propinquus, c5; Calanus propinquus, female; Calanus propinquus, male; Candacia sp., copepodites; Chiridius sp., copepodites; Clausocalanus brevipes, female; Copepoda, nauplii; Cornucalanus robustus, copepodites; Counting, copepoda; Ctenocalanus citer, c1; Ctenocalanus citer, c2; Ctenocalanus citer, c3; Ctenocalanus citer, c4; Ctenocalanus citer, c5; Ctenocalanus citer, female; Ctenocalanus citer, male; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Disco spp., copepodites; Disco spp., female; Drescheriella spp.; Ectinosoma antarcticum; Elevation of event; Euchirella sp., copepodites; Event label; Farrania frigida, copepodites; Farrania frigida, female; Gaetanus tenuispinus, copepodites; Gaetanus tenuispinus, female; Gaetanus tenuispinus, male; Haloptilus ocellatus, copepodites; Haloptilus ocellatus, female; Haloptilus ocellatus, male; Haloptilus oxycephalus, copepodites; Haloptilus oxycephalus, female; Haloptilus oxycephalus, male; Harpacticoida indeterminata; Harpacticus furcifer; Heterorhabdus austrinus, copepodites; Heterorhabdus austrinus, female; Heterorhabdus austrinus, male; Idomene antarctica; Latitude of event; Longitude of event; Lubbockia spp.; Lucicutia curta, female; Lucicutia spp., copepodites; Lucicutia wolfendeni, male; Metridia curticauda, copepodites; Metridia curticauda, female; Metridia curticauda, male; Metridia gerlachei, c1; Metridia gerlachei, c2; Metridia gerlachei, c3; Metridia gerlachei, c4; Metridia gerlachei, c5; Metridia gerlachei, female; Metridia gerlachei, male; Microcalanus pygmaeus, c1; Microcalanus pygmaeus, c2; Microcalanus pygmaeus, c3; Microcalanus pygmaeus, c4; Microcalanus pygmaeus, c5; Microcalanus pygmaeus, female; Microcalanus pygmaeus, male; Microsetella sp.; Mimocalanus cultrifer, copepodites; Mimocalanus cultrifer, male; Mimocalanus sp., copepodites; MSN100; Multiple opening/closing net, 100 µm meshsize; Oithona spp.; Oncaea spp.; Paraeuchaeta antarctica, female; Paraeuchaeta antarctica, male; Paraeuchaeta spp., copepodites; Paraheterorhabdus farrani, copepodites; Paraheterorhabdus farrani, female; Paralabidocera antarctica, male; Pleuromamma robusta, copepodites; Pleuromamma robusta, female; Polarstern; PS65/097-1; PS65/141-1; PS65/170-1; PS65/207-1; PS65/242-1; PS65/256-1; PS65/263-1; PS65/286-1; PS65/295-1; PS65/304-1; PS65 BENDEX; Pseudoamallothrix cenotelis, copepodites; Pseudoamallothrix cenotelis, female; Pseudoamallothrix cenotelis, male; Racovitzanus antarcticus, copepodites; Racovitzanus antarcticus, female; Racovitzanus antarcticus, male; Rhincalanus gigas, c1; Rhincalanus gigas, c2; Rhincalanus gigas, c3; Rhincalanus gigas, c4; Rhincalanus gigas, c5; Rhincalanus gigas, female; Rhincalanus gigas, male; Sample code/label; Scaphocalanus antarcticus, copepodites; Scaphocalanus antarcticus, female; Scaphocalanus antarcticus, male; Scaphocalanus farrani, female; Scaphocalanus spp., copepodites; Scaphocalanus vervoorti, female; Scaphocalanus vervoorti, male; Scolecithricella minor, copepodites; Scolecithricella minor, female; Scolecithricella minor, male; Spinocalanus abyssalis, female; Spinocalanus antarcticus, copepodites; Spinocalanus longicornis, copepodites; Spinocalanus longicornis, female; Spinocalanus terranovae, copepodites; Spinocalanus terranovae, female; Spinocalanus terranovae, male; Stephos longipes, c1; Stephos longipes, c2; Stephos longipes, c3; Stephos longipes, c4; Stephos longipes, c5; Stephos longipes, female; Stephos longipes, male; Teneriforma meteorae, female; Volume; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 6650 data points
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  • 10
    Publication Date: 2019-08-19
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
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