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  • 1
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    Aquatische Optische Technologien in Deutschland (2015)
    IOW Warnemünde
    In:  EPIC3Marine Science Reports - Meereswissenschaftliche Berichte, IOW Warnemünde, 97, pp. 1-83, ISSN: 2195-657X
    Details
    Publication Date: 2016-01-13
    Description: Optic technologies and methods/procedures are established across all areas and scales in limnic and marine research in Germany and develop further continuously. The working group “Aquatic Optic Technologies” (AOT) constitutes a common platform for knowledge transfer among scientists and users, provides a synergistic environment for the national developer community and will enhance the international visibility of the German activities in this field. This document summarizes the AOT-procedures and -techniques applied by national research institutions. We expect to initiate a trend towards harmonization across institutes. This will facilitate the establishment of open standards, provide better access to documentation, and render technical assistance for systems integration. The document consists of the parts: Platforms and carrier systems outlines the main application areas and the used technologies. Focus parameters specifies the parameters measured by means of optical methods/techniques and indicates to which extent these parameters have a socio-political dimension. Methods presents the individual optical sensors and their underlying physical methods. Similarities denominates the common space of AOT-techniques and applications. National developments lists projects and developer groups in Germany designing optical hightechnologies for limnic and marine scientific purposes.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , notRev
    Format: application/pdf
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  • 2
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    Size structure and life cycle patterns of dominant pelagic amphipods collected as swimmers in sediment traps in the eastern Fram Strait (2012)
    Elsevier B.V.
    In:  EPIC3Journal of Marine Systems., Elsevier B.V., 95, pp. 1-15
    Details
    Publication Date: 2014-10-07
    Description: Time series length-frequency data are presented for Themisto amphipods collected as swimmers by moored sediment traps since 2000 at the AWI deep-sea observatory HAUSGARTEN (79°N/4°E) in the eastern Fram Strait. Amphipod occurrences increased significantly from 2000 to 2009 at 200-300 m depth, and the North Atlantic species Themisto compressa was continuously present in the samples starting in 2004. We present year-round records of large adult Themisto amphipods, including the appearance of T. libellula with a total body length of up to 56.7 mm and juveniles starting from 4.0 mm. The length of T. abyssorum ranged from 4.2-25.6 mm, whereas it varied for T. compressa from 8.8-24.4 mm. Length-frequency analysis indicated a life span of 2 years for T. abyssorum and at least 3 years for T. libellula. The absence of juveniles for T. compressa suggested its reproduction in southern subarctic areas and its occasional northward migration with warmer Atlantic water into the eastern Fram Strait. The seasonal and long-term size structure of the three pelagic species was consistent over the course of the study, indicating no changes occurred in cohort development due to increasing abundances or warming water temperatures.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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