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  • Jelly-falls historic and recent observations: a review to drive future research directions

    Author(s)
    Lebrato, Mario
    Pitt, Kylie A
    Sweetman, Andrew K
    Jones, Daniel OB
    Cartes, Joan E
    Oschlies, Andreas
    Condon, Robert H
    Molinero, Juan Carlos
    Adler, Laetitia
    Gaillard, Christian
    Lloris, Domingo
    Billett, David SM
    Griffith University Author(s)
    Pitt, Kylie A.
    Year published
    2012
    Metadata
    Show full item record
    Abstract
    The biological pump describes the transport of particulate matter from the sea surface to the ocean's interior including the seabed. The contribution by gelatinous zooplankton bodies as particulate organic matter (POM) vectors ("jelly-falls") has been neglected owing to technical and spatiotemporal sampling limitations. Here, we assess the existing evidence on jelly-falls from early ocean observations to present times. The seasonality of jelly-falls indicates that they mostly occur after periods of strong upwelling and/or spring blooms in temperate/subpolar zones and during late spring/early summer. A conceptual model helps ...
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    The biological pump describes the transport of particulate matter from the sea surface to the ocean's interior including the seabed. The contribution by gelatinous zooplankton bodies as particulate organic matter (POM) vectors ("jelly-falls") has been neglected owing to technical and spatiotemporal sampling limitations. Here, we assess the existing evidence on jelly-falls from early ocean observations to present times. The seasonality of jelly-falls indicates that they mostly occur after periods of strong upwelling and/or spring blooms in temperate/subpolar zones and during late spring/early summer. A conceptual model helps to define a jelly-fall based on empirical and field observations of biogeochemical and ecological processes. We then compile and discuss existing strategic and observational oceanographic techniques that could be implemented to further jelly-falls research. Seabed video- and photography-based studies deliver the best results, and the correct use of fishing techniques, such as trawling, could provide comprehensive regional datasets. We conclude by considering the possibility of increased gelatinous biomasses in the future ocean induced by upper ocean processes favouring their populations, thus increasing jelly-POM downward transport. We suggest that this could provide a "natural compensation" for predicted losses in pelagic POM with respect to fuelling benthic ecosystems.
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    Journal Title
    Hydrobiologia
    Volume
    690
    Issue
    1
    DOI
    https://doi.org/10.1007/s10750-012-1046-8
    Subject
    Earth sciences
    Environmental sciences
    Biological sciences
    Marine and estuarine ecology (incl. marine ichthyology)
    Publication URI
    http://hdl.handle.net/10072/48770
    Collection
    • Journal articles

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