GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    Temporal trends in the biomass of three epibenthic invertebrates from the deep-sea observatory HAUSGARTEN (Fram Strait, Arctic Ocean) (2018)
    INTER-RESEARCH
    In:  EPIC3Marine Ecology-Progress Series, INTER-RESEARCH, 602, pp. 15-29, ISSN: 0171-8630
    Details
    Publication Date: 2018-08-24
    Description: In a bid to further understand processes that influence deep-sea epibenthic megafauna, which fulfil critical roles in the global carbon cycle, we present data from the Arctic Long-Term Ecological Research observatory HAUSGARTEN, in the Fram Strait, showing significant temporal changes in total biomass of 3 key organisms (Kolga hyalina, Elpidia heckeri and Mohnia spp.) at stations N3, HG-IV and S3 during repeated deployments over a time series spanning 2004−2015. Overall, all species investigated displayed a similar reproduction/recruitment cycle, with increasing mean mass per individual leading to decreases in abundance, and vice versa. However, there were 3 ‘events’ that deviated from this pattern. The first was a mass reproduction event of E. heckeri at HG-IV from 2012 onwards, likely due to an increased carrying capacity. The second event involved migration of K. hyalina from HG-IV between 2004−2007, with a return in 2011. This coincided with a shift in the composition of the particle flux at the station. The final event was a mass migration of K. hyalina to N3 between 2004 (0 ind. m−2) and 2007 (4.765 ± 0.084 ind. m−2). This event coincided with a 4-fold increase in phytodetrital food availability at the seafloor at N3. Our results highlight the importance of time-series studies to ascertain the key factors that influence epibenthic megafaunal communities. It also highlights the fact that more needs to be done in understanding the life history of these organisms, as this understanding is, so far, widely lacking.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    The Quest for Seafloor Macrolitter: A Critical Review of Background Knowledge, Current Methods and Future Prospects (2021)
    IOP PUBLISHING LTD
    In:  EPIC3Environmental Research Letters, IOP PUBLISHING LTD, 16(2), pp. 1-29, ISSN: 1748-9326
    Details
    Publication Date: 2021-01-20
    Description: The seafloor covers some 70% of the Earth's surface and has been recognised as a major sink for marine litter. Still, litter on the seafloor is the least investigated fraction of marine litter, which is not surprising as most of it lies in the deep sea, i.e. the least explored ecosystem. Although marine litter is considered a major threat for the oceans, monitoring frameworks are still being set up. This paper reviews current knowledge and methods, identifies existing needs, and points to future developments that are required to address the estimation of seafloor macrolitter. It provides background knowledge and conveys the views and thoughts of scientific experts on seafloor marine litter offering a review of monitoring and ocean modelling techniques. Knowledge gaps that need to be tackled, data needs for modelling, and data comparability and harmonisation are also discussed. In addition, it shows how research on seafloor macrolitter can inform international protection and conservation frameworks to prioritise efforts and measures against marine litter and its deleterious impacts.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities (2016)
    INTER-RESEARCH
    In:  EPIC3Marine Ecology-Progress Series, INTER-RESEARCH, 556, pp. 45-57, ISSN: 0171-8630
    Details
    Publication Date: 2017-01-31
    Description: Stones released by melting icebergs are called dropstones, and these stones constitute island-like hard-bottom habitats at high latitudes. In 2012, dropstone megafauna in the HAUSGARTEN observatory in the Fram Strait was sampled photographically. We tested the hypothesis that dropstones would have the same species distribution patterns as terrestrial islands, using 5 patterns commonly found in the classical island literature. Higher richness, diversity, and abundance of fauna occurred on larger stones and on stones near a deep-water rocky reef. These patterns can be explained by the greater surface area of larger stones, the exposure of larger stones to faster current higher in the benthic boundary layer, and increased larval supply from the rocky reef. Some pairs of morphotypes (12 pairs out of 56 morphotypes and 1540 possible pairs) co-occurred less often than expected by chance. While similar patterns have been attributed to interspecific competition in the classical island literature, we offer alternative mechanisms for dropstones. Non-random co-occurrence on dropstones may be explained by larval dispersal. Dropstone fauna had an overdispersed (clumped) distribution, so pairs of morphotypes may have negative non-random co-occurrence simply because short larval life and limited dispersal ability prevent them from having randomly overlapping distributions. In addition, we found 8 morphotype pairs that co-occurred more often than expected by chance because of epibiontism. The patterns found in dropstone communities resemble terrestrial islands, but different mechanisms may be responsible.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    The physical oceanography of the transport of floating marine debris (2020)
    IOP PUBLISHING LTD
    In:  EPIC3Environmental Research Letters, IOP PUBLISHING LTD, ISSN: 1748-9326
    Details
    Publication Date: 2020-02-03
    Description: Marine plastic debris floating on the ocean surface is a major environmental problem. However, its distribution in the ocean is poorly mapped, and most of the plastic waste estimated to have entered the ocean from land is unaccounted for. Better understanding of how plastic debris is transported from coastal and marine sources is crucial to quantify and close the global inventory of marine plastics, which in turn represents critical information for mitigation or policy strategies. At the same time, plastic is a unique tracer that provides an opportunity to learn more about the physics and dynamics of our ocean across multiple scales, from the Ekman convergence in basin-scale gyres to individual waves in the surfzone. In this review, we comprehensively discuss what is known about the different processes that govern the transport of floating marine plastic debris in both the open ocean and the coastal zones, based on the published literature and referring to insights from neighbouring fields such as oil spill dispersion, marine safety recovery, plankton connectivity, and others. We discuss how measurements of marine plastics (both in situ and in the laboratory), remote sensing, and numerical simulations can elucidate these processes and their interactions across spatio-temporal scales.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...