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  • 1
    Online Resource
    Online Resource
    The fate of discarded appendicularian houses: degradation by the copepod, Microsetella norvegica, and other agents
    Oxford University Press (OUP) ; 2007
    In:  Journal of Plankton Research Vol. 29, No. 7 ( 2007-01-01), p. 641-654
    Details
    In: Journal of Plankton Research, Oxford University Press (OUP), Vol. 29, No. 7 ( 2007-01-01), p. 641-654
    Type of Medium: Online Resource
    ISSN: 1464-3774 , 0142-7873
    URL: Article
    DOI: 10.1093/plankt/fbm046
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2007
    detail.hit.zdb_id: 756271-8
    detail.hit.zdb_id: 1474909-9
    SSG: 12
    SSG: 21,3
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  • 2
    Online Resource
    Online Resource
    Predation control of zooplankton dynamics: a review of observations and models
    Oxford University Press (OUP) ; 2014
    In:  ICES Journal of Marine Science Vol. 71, No. 2 ( 2014-01-01), p. 254-271
    Details
    In: ICES Journal of Marine Science, Oxford University Press (OUP), Vol. 71, No. 2 ( 2014-01-01), p. 254-271
    Abstract: Daewel, U., Hjøllo, S. S., Huret, M., Ji, R., Maar, M., Niiranen, S., Travers-Trolet, M., Peck, M. A., van de Wolfshaar, K. E. 2014. Predation control of zooplankton dynamics: a review of observations and models. – ICES Journal of Marine Science, 71: 254–271. We performed a literature review to examine to what degree the zooplankton dynamics in different regional marine ecosystems across the Atlantic Ocean is driven by predation mortality and how the latter is addressed in available modelling approaches. In general, we found that predation on zooplankton plays an important role in all the six considered ecosystems, but the impacts are differently strong and occur at different spatial and temporal scales. In ecosystems with extreme environmental conditions (e.g. low temperature, ice cover, large seasonal amplitudes) and low species diversity, the overall impact of top-down processes on zooplankton dynamics is stronger than for ecosystems having moderate environmental conditions and high species diversity. In those ecosystems, predation mortality was found to structure the zooplankton mainly on local spatial and seasonal time scales. Modelling methods used to parameterize zooplankton mortality range from simplified approaches with fixed mortality rates to complex coupled multispecies models. The applicability of a specific method depends on both the observed state of the ecosystem and the spatial and temporal scales considered. Modelling constraints such as parameter uncertainties and computational costs need to be balanced with the ecosystem-specific demand for a consistent, spatial-temporal dynamic implementation of predation mortality on the zooplankton compartment.
    Type of Medium: Online Resource
    ISSN: 1095-9289 , 1054-3139
    URL: Article
    DOI: 10.1093/icesjms/fst125
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2014
    detail.hit.zdb_id: 2463178-4
    detail.hit.zdb_id: 1468003-8
    detail.hit.zdb_id: 29056-7
    SSG: 12
    SSG: 21,3
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  • 3
    Online Resource
    Online Resource
    Comparing life history traits and tolerance to changing environments of two oyster species ( Ostrea edulis and Crassostrea gigas ) through Dynamic Energy Budget theory
    Oxford University Press (OUP) ; 2022
    In:  Conservation Physiology Vol. 10, No. 1 ( 2022-01-01)
    Details
    In: Conservation Physiology, Oxford University Press (OUP), Vol. 10, No. 1 ( 2022-01-01)
    Abstract: To predict the response of the European flat oyster (Ostrea edulis) and Pacific cupped oyster (Crassostrea gigas/Magallana gigas) populations to environmental changes, it is key to understand their life history traits. The Dynamic Energy Budget (DEB) theory is a mechanistic framework that enables the quantification of the bioenergetics of development, growth and reproduction from fertilization to death across different life stages. This study estimates the DEB parameters for the European flat oyster, based on a comprehensive dataset, while DEB parameters for the Pacific cupped oyster were extracted from the literature. The DEB parameters for both species were validated using growth rates from laboratory experiments at several constant temperatures and food levels as well as with collected aquaculture data from the Limfjorden, Denmark, and the German Bight. DEB parameters and the Arrhenius temperature parameters were compared to get insight in the life history traits of both species. It is expected that increasing water temperatures due to climate change will be beneficial for both species. Lower assimilation rates and high energy allocation to soma explain O. edulis’ slow growth and low reproductive output. Crassostrea gigas’ high assimilation rate, low investment in soma and extremely low reserve mobility explains the species’ fast growth, high tolerance to starvation and high reproductive output. Hence, the reproductive strategies of both species are considerably different. Flat oysters are especially susceptible to unfavourable environmental conditions during the brooding period, while Pacific oysters’ large investment in reproduction make it well adapted to highly diverse environments. Based on the life history traits, aquaculture and restoration of O. edulis should be executed in environments with suitable and stable conditions.
    Type of Medium: Online Resource
    ISSN: 2051-1434
    URL: Article
    DOI: 10.1093/conphys/coac034
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2721508-8
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  • 4
    Online Resource
    Online Resource
    Identification of potential classes of glycoligands mediating dynamic endothelial adhesion of human tumor cells
    Oxford University Press (OUP) ; 2023
    In:  Glycobiology Vol. 33, No. 8 ( 2023-10-06), p. 637-650
    Details
    In: Glycobiology, Oxford University Press (OUP), Vol. 33, No. 8 ( 2023-10-06), p. 637-650
    Abstract: One critical step of metastasis formation is the extravasation of circulating tumor cells from the bloodstream. This process requires the dynamic interaction of cell adhesion molecules like E-selectin on endothelial cells with carbohydrate ligands on tumor cells. To characterize these glycans in a comprehensible approach, the rolling, tethering, and firm adhesion of nine human tumor cell lines on human umbilical vein endothelial cells was analyzed using laminar flow adhesion assays. The tumor cell lines were grouped into three subsets by their canonical E-selectin ligand status (sialyl-Lewis A and X +/+, −/+, −/−) and their adhesiveness was compared after enzymatic, pharmacologic, chemical treatment or antibody blockade of the tumor cells or endothelial cells, respectively. Tumor cells were also screened regarding their glycosyltransferase expression profile. We found that although E-selectin and terminal α2,3-sialic acid largely determined firm adhesion, adhesive events did not exclusively depend on the presence of sialyl-Lewis A and/or sialyl-Lewis X. Nevertheless, two of the three sialyl-Lewis A/X−/− tumor cells additionally or fully depended on vascular cell adhesion molecule-1 for firm adhesion. The significance of O-GalNAc- and N-glycans for adhesion varied remarkably among the tumor cells. The sialyl-Lewis A/X+/+ subset showed glycoprotein-independent adhesion, suggesting a role of glycolipids as well. All sialyl-Lewis A/X−/− tumor cells lacked FUT3 and FUT7 expression as opposed to sialyl-Lewis A/X+/+ or −/+ cell lines. In summary, the glycans on tumor cells mediating endothelial adhesion are not as much restricted to sialyl-Lewis A /X as previously assumed. The present study specifically suggests α2,3-linked sialic acid, O-GalNAc glycans, glycosphingolipids, and FUT3/FUT7 products as promising targets for future studies.
    Type of Medium: Online Resource
    ISSN: 1460-2423
    URL: Article
    DOI: 10.1093/glycob/cwad061
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 1478140-2
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  • 5
    Online Resource
    Online Resource
    Calanus finmarchicus egg production at its northern border
    Oxford University Press (OUP) ; 2016
    In:  Journal of Plankton Research Vol. 38, No. 5 ( 2016-09), p. 1206-1214
    Details
    In: Journal of Plankton Research, Oxford University Press (OUP), Vol. 38, No. 5 ( 2016-09), p. 1206-1214
    Type of Medium: Online Resource
    ISSN: 0142-7873 , 1464-3774
    URL: Article
    DOI: 10.1093/plankt/fbw048
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2016
    detail.hit.zdb_id: 756271-8
    detail.hit.zdb_id: 1474909-9
    SSG: 12
    SSG: 21,3
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    Online Resource
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