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  • 1
    Electronic Resource
    Electronic Resource
    Chemiluminescent Indicator Titration of Cadmium with Potassium Ferricyanide. (1964)
    s.l. : American Chemical Society
    Analytical chemistry 36 (1964), S. 529-532 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60209a061
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    Paper (German National Licenses)
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  • 2
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    Distribution Patterns of Argestidae Por, 1986 (Copepoda Harpacticoida) in the South Atlantic Ocean – first results from DIVA 2 (2008)
    In:  EPIC32nd International DIVA Workshop (DIVA 1&2), Ferrol, Spain, 2008-03-25-2008-03-30
    Details
    Publication Date: 2019-07-17
    Description: Argestidae Por, 1986 are one of the most abundant taxa in the muddy sediments of the deep oceans. This family with up to date 20 genera and 83 described species shows well visible diagnostic characters allowing quick identification at least to family level. In most of the cases, the Argestidae found in deep-sea samples, can be identified down to genus level. Identification to species level is rarely possible, since most of the detected species are new to science. Altogether, the occurrence in each deep-sea sample allover the world combined with the high recognition value, they are supposed to be representative for the biogeographical and chorological distribution of harpacticoid copepods in the deep oceans. The results from the expedition DIVA 1 (M48/1) showed differences between the two sampled stations within the Angola Basin. Preliminary results from DIVA 2 (M63/2), leading to the Cape, Angola and Guinea Basin show that, also comparing these three deep-sea basins, which are separated by ridges, geographic obstacles do not seem to be barriers for benthonic living meiofauna in the South Atlantic. Thus, for harpacticoid copepods, the results from DIVA 2 confirm the conclusion of DIVA 1, that other factors than geographic structures seem to rule the distribution or occurrence of species in the deep of the worlds oceans.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 3
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    Submarine ridges do not prevent large-scale dispersal of abyssal fauna: A case study of Mesocletodes (Crustacea, Copepoda, Harpacticoida) (2011)
    PERGAMON-ELSEVIER SCIENCE LTD
    In:  EPIC3Deep-Sea Research Part I-Oceanographic Research Papers, PERGAMON-ELSEVIER SCIENCE LTD, 58(8), pp. 839-864, ISSN: 0967-0637
    Details
    Publication Date: 2019-07-17
    Description: We examined the large-scale distribution of deep-sea harpacticoid copepods at the species level, in order to clarify the underlying processes of copepod dispersal. The study was based on samples collected from 12 regions and a total of 113 stations: 57 stations at depths between 1107 and 5655 m on abyssal plains in the South and North Atlantic, Southern Ocean, southern Indian Ocean, and the Pacific Ocean, and 56 stations above 900 m in the North Atlantic and eastern Mediterranean Sea. We chose the genus Mesocletodes Sars, 1909 as an ideal group to study the large-scale distribution of harpacticoid Copepods in the deep oceans. Clear apomorphies and a comparatively large body size of about 1 mm allow rapid recognition of allied species in meiofauna samples. In addition, Mesocletodes represents more than 50% of the family Argestidae Por, 1986, one of the most abundant harpacticoid families in the deep sea. The geographical distributions of 793 adult females of Mesocletodes belonging to 61 species throughout the South and North Atlantic, Southern Ocean, southern Indian Ocean, Pacific Ocean, and eastern Mediterranean Sea indicated that most species are cosmopolitan. Neither the topography of the sea bottom nor long distances seem to prevent species from dispersing. Passive transport by bottom currents after resuspension is likely the propulsive factor for the dispersal of Harpacticoida, while plate tectonics and movement of individuals in the sediment may play relatively minor roles.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
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  • 4
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    The taxon Mesocletodes Sars, 1909 (Argestidae, Harpacticoida, Copepoda) in the South Atlantic. Are there geographic barriers for this taxon off the African coast? (2007)
    In:  EPIC313th International Meiofauna Conference (THIRIMCO), Recife, Brazil (29.07.-03.08.2007), Recife, Brazil, 2007-07-29-2007-08-03
    Details
    Publication Date: 2019-07-17
    Description: During the Cruises DIVA 1 (2000) and DIVA 2 (2005) to the South Atlantic Ocean, 7 stations containing altogether 410 specimens of the taxon Mesocletodes Sars, 1909 were sampled. Although the Harpacticoida, which comprise amongst others the taxon Mesocletodes (Argestidae), are known as typical benthic habitants, the Walvis and Guinea ridge do not seem to be geographic barriers for most species.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 5
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    Ist die Mesocletodes abyssicola- Gruppe monophyletisch? Zur Systematik innerhalb des Taxons Mesocletodes Sars, 1909 (Copepoda, Harpacticoida, Argestidae) (2007)
    In:  EPIC313. Crustaceologentagung, Frankfurt a.M., Germany, 2007-03-15-2007-03-18
    Details
    Publication Date: 2019-07-17
    Description: Argestidae POR, 1986 sind überwiegend in der Tiefsee zu finden, wo sie einen Großteil der Copepoda Harpacticoida stellen. Innerhalb der Argestidae lässt sich das Taxon Mesocletodes SARS, 1909 in zwei Gruppen unterscheiden: die Mesocletodes abyssicola-Gruppe, deren Vertreter cuticuläre Fortsätze auf Cephalothorax und Telson tragen, und die Mesocletodes inermis-Gruppe, deren Arten bar derartiger Fortsätze sind. Um diese von BODIN (1968) vorgeschlagene Unterscheidung zu überprüfen, wurde eine auf morphologischen Merkmalen basierende phylogenetische Analyse durchgeführt. Hierzu dienten Tiermaterial der Expedition DIVA 1 im Jahre 2000 ins Angolabecken sowie Literaturdaten. Die Analyse ließ auf die Monophylie der Mesocletodes abyssicola-Gruppe schließen. Demgegenüber lassen jüngst vorgenommene Untersuchungen an zusätzlichem Probenmaterial (z. B. von der Expedition DIVA 2 im Jahre 2005 in das Guineabecken) Zweifel an der Monophylie der Mesocletodes abyssicola-Gruppe aufkommen.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 6
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    Are geographic barriers insurmountable obstacles for deep-sea meiobenthos? Investigations on the biogeography of deep-sea organisms in the case of the Mesocletodes abyssicola-group (Copepoda: Harpacticoida: Argestidae). (2010)
    In:  EPIC314th International Meiofauna Conference, Gent, Belgium, 2010-07-11-2010-07-16
    Details
    Publication Date: 2019-07-17
    Description: The family of Argestidae Por, 1986 belongs to the benthic living harpacticoid copepods. They are primarily found in deep-sea samples and show a worldwide distribution. 50% of all Argestidae detected in deep-sea material belong to Mesocletodes Sars, 1909. Within this genus, members of the Mesocletodes abyssicola group are distinctly separated from the remaining congeners of Mesocletodes: strong cuticular processes on cephalothorax and/or telson and extremely elongated furcal rami are interpreted as apomorphic to the M. abyssicola group. The combination of their conspicuous morphological features, their comparatively large body size (ca. 1mm) and their cylindrical formed body allows fast recognition in samples of metazoan meiobenthos. Moreover, compared with other harpacticoid species, a fairly high number of specimens per species is found for the M. abyssicola group in sampled material from remote deep-sea regions. For these reasons, they are considered as an ideal taxon to investigate distribution patterns for deep-sea Harpacticoida at species level. For instance, Mesocletodes robustus Por, 1964, which was described from a fjord in Norway, was found in deep-sea samples of the Southeast Atlantic (campaign DIVA), Southern Ocean (campaign ANDEEP), the equatorial Pacific (campaign NODINAUT) and even in the eastern Mediterranean Sea in depths of 180m only. In conjunction with data on benthic deep-sea organisms, collated during the Workshop on Cosmopolitan Deep-Sea Species in December 2008 (Wilhelmshaven, Germany), these findings lead to the assumption that geographic barriers like undersea ridges or continental masses do not prevent the dispersal of meiobenthic deep-sea organisms.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 7
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    The distribution of the taxa Eurycletodes Sars, 1909 and Mesocletodes Sars, 1909 in the Eastern Atlantic Ocean: a comparison between deep sea and seamount fauna (2007)
    In:  EPIC313th International Meiofauna Conference (THIRIMCO), Recife, Brazil (29.07.-03.08.2007), Recife, Brazil, 2007-07-29-2007-08-03
    Details
    Publication Date: 2019-07-17
    Description: Our knowledge about large scale distribution of harpacticoids in the deep sea is still very limited. Mainly because of two reasons: concerning meiofauna the oceans in general are undersampled 2) each time sampling the deep sea we find a lot of new species, which will never be described and just get numbers valuable for the single study. So the studies get stuck in ecological analyses and are in taxonomical terms not comparable to others. That is the reason why the present study focuses on two supraspecific taxa to cover a large geographical range. This study shows the species distribution of the taxa Mesocletodes Sars, 1909 and Eurycletodes Sars, 1909 in the deep sea and on two seamounts in the Eastern Atlantic Ocean between Azores (38°40’N) and Cape of Good Hope (34°50’S). The material studied was collected during the cruises of RV Meteor DIVA 1 (2000), DIVA 2 (2005), OASIS (2003) and M42/3 (1998). 9 deep sea stations between 2800m and 4500m depth and the summits of Seine Seamount (200m) and Great Meteor Bank (400m) were sampled using multicorer, boxcorer and epibenthos-sledge. Questions we tried to answer with this study are: Are there geographical barriers in the deep sea? Are there any barriers for the distribution of harpacticoid copepods? Are seamounts colonized from the deep sea?
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 8
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    Comparing harpacticoid species diversity (Crustacea: Copepoda) of the Angola deep-sea Basin (Southeast Atlantic, DIVA 1) and the Northern Gulf of Mexico deep-sea (2008)
    In:  EPIC32nd International DIVA Workshop (DIVA 1&2), Ferrol, Spain, 2008-03-25-2008-03-30
    Details
    Publication Date: 2019-07-17
    Description: Identification of harpacticoid copepods sampled with a multiple corer during DIVA 1 expedition of RV METEOR (cruise M 48/1) from the Angola Basin yielded the enormous number of 684 species out of 2222 adult specimens. The species number is comparable to that provided by BAGULEY et al. (2006) for the Northern Gulf of Mexico deep-sea (696 species out of 3654 adults). However, BAGULEY et al. (2006) sampled 43 stations scattered over hundreds of kilometres, while we analysed data from only two stations 600 kilometres apart from each other. Regarding the two stations from the Angola Basin, significant diversity differences were detected, the Northern station # 346 being far more diverse than the Southern station # 325 with respect to species density.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 9
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    A new species of Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae) from the southern hemisphere including remarks on the phylogeny of the genus and its subgenera (2011)
    SPRINGER
    In:  EPIC3Helgoland Marine Research, SPRINGER, 65(4), pp. 479-493, ISSN: 1438-387X
    Details
    Publication Date: 2019-07-17
    Description: This paper deals with taxonomy and phylogenetics of the genus Eurycletodes Sars, 1909 (Copepoda: Harpacticoida: Argestidae). Samples, collected from the southeast Atlantic on board RV ‘‘Meteor’’ during the cruises DIVA-1 (M48/1) and DIVA-2 (M63/2), contain specimens of Eurycletodes. Eurycletodes is characterized as a monophylum by A1 segments III ? IV fused, basal seta of md palp lost, exp of md palp reduced to 1 seta or completely lost. Similarly, the subgenera Eurycletodes (Eurycletodes) and Eurycletodes (Oligocletodes) are characterized as monophyletic by the loss of the inner seta on P1 exp2 (apomorphic to E. (E.)) and the absence of the inner seta on P5 endopodal lobe (apomorphic to E. (O.)). Eurycletodes profundus is renamed as E. (O.) profundus. Eurycletodes ephippiger is the only species of the genus without subgeneric designation. Eurycletodes (O.) diva sp. nov. is described. The new species differs from described species of the genus by a larger body size, P5 endopodal lobe only slightly protruding, last segment of A1 with 2 outer setae, furcal rami elongated between setae VII and IV. The occurrence of 2 specimens of Eurycletodes (O.) diva sp. nov. at 2 sites separated by the Walvis Ridge supports the hypothesis that geographic obstacles do not prevent harpacticoid copepods fromspreading in the deep sea.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
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  • 10
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    Copepodid and adult Argestidae Por, 1986 (Copepoda: Harpacticoida) in the southeastern Atlantic deep sea: diversity and community structure at the species level (2012)
    In:  EPIC3Marine Biology, 159(6), pp. 1223-1238
    Details
    Publication Date: 2019-07-17
    Description: Drawing on the example of Argestidae Por, 1986b, community structure and large-scale distribution patterns of harpacticoid copepods at species level were examined in the three southeastern Atlantic deep-sea basins. The study was based on 30 multicorer deployments at depths from 5,035 to 5,655 m during the DIVA-2 expedition. The 1,176 adult and copepodid Argestidae from CIII onwards belong to 114 species. Some species occurred at all five stations; others appeared to be exclusive for single stations. Inclusion of copepodids revealed a higher similarity in species composition among the five stations than consideration of just adults and caused a slight shift toward dominance of single species in the sediments at most locations.
    Repository Name: EPIC Alfred Wegener Institut
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