Search Results - (Author, Cooperation:G. M. Berg)
-
1Latest Papers from Table of Contents or Articles in PressV. Smetacek ; C. Klaas ; V. H. Strass ; P. Assmy ; M. Montresor ; B. Cisewski ; N. Savoye ; A. Webb ; F. d'Ovidio ; J. M. Arrieta ; U. Bathmann ; R. Bellerby ; G. M. Berg ; P. Croot ; S. Gonzalez ; J. Henjes ; G. J. Herndl ; L. J. Hoffmann ; H. Leach ; M. Losch ; M. M. Mills ; C. Neill ; I. Peeken ; R. Rottgers ; O. Sachs ; E. Sauter ; M. M. Schmidt ; J. Schwarz ; A. Terbruggen ; D. Wolf-Gladrow
Nature Publishing Group (NPG)
Published 2012Staff ViewPublication Date: 2012-07-20Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Carbon/*metabolism ; Carbon Dioxide/metabolism ; *Carbon Sequestration ; Diatoms/metabolism/*physiology ; Iron/*metabolism ; Oceans and Seas ; Time FactorsPublished by: -
2Latest Papers from Table of Contents or Articles in PressKogiso, M., Qi, L., Braun, F. K., Injac, S. G., Zhang, L., Du, Y., Zhang, H., Lin, F. Y., Zhao, S., Lindsay, H., Su, J. M., Baxter, P. A., Adesina, A. M., Liao, D., Qian, M. G., Berg, S., Muscal, J. A., Li, X.-N.
The American Association for Cancer Research (AACR)
Published 2018Staff ViewPublication Date: 2018-05-02Publisher: The American Association for Cancer Research (AACR)Print ISSN: 1078-0432Electronic ISSN: 1557-3265Topics: MedicinePublished by: -
3Articles: DFG German National LicensesStaff View
ISSN: 1432-1793Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Favella panamensis Kofoid and Campbell, 1929 is seasonally abundant in meso- to polyhaline waters of Chesapeake Bay and Indian River, Florida, USA, where it reaches densities of 103 cells l-1. During the summers of 1986–1992. F. panamensis populations of the two estuaries were commonly infected by the parasitic dinoflagellate Duboscquella aspida Cachon, 1964. The intracellular phase of the parasite reached maturity in ∼21 h (30 °C) and consumed ∼35% of the host's biomass. Infections were not typically lethal to F. panamensis, but sometimes forced the host from its lorica. Several D. aspida were found in the cytoplasm of many hosts, and the number of parasites infection-1 was directly related to infection level. Parasite prevalence averaged 24.0 and 11.5% with mean number of parasites infection-1 being 1.5 and 1.3 for Chesapeake Bay and Indian River samples, respectively. D. aspida was estimated to remove up to 68% of host standing stock d-1 with a mean of ∼10% for all samples. The average impact of parasitism on F. panamensis populations was somewhat less than would be expected from copepod grazing.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1432-1793Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract The quantitative importance of light-mediated, dissolved organic nitrogen (DON) utilization in relation to overall nitrogen-assimilation in Aureococcusanophagefferens Hargraves et Sieburth was assessed during a brown tide event in Shinnecock Bay, Long Island, 24 through 26 July 1995. The growth response of A. anophagefferens was maximal in organic-rich Bay water and decreased proportional to the organic:inorganic nutrient ratio of the water. Short-term uptake measurements with six nitrogenous substrates revealed that reduced nitrogen could potentially represent 95% of overall nitrogen uptake of which 70% was due to organic nitrogen alone. Potential uptake of urea by the A. anophagefferens-dominated bloom was substan tially greater than uptake of the other substrates tested during the study, contributing the largest percentage of total nitrogen uptake (58 to 64%; ρ′ max(urea) 4.4 μg atom N l−1 h−1), followed by NH4 + (18 to 26%; ρ′max(NH4+) 2 μg atom N l−1 h−1). The combined rates of uptake of algal extract, lysine and glutamic acid contributed between 11 and 16% of total uptake, whereas NO3 −contributed 5 to 8%. Based on the kinetic determinations from this study we suggest an ecological framework for the events leading to the dominance and abundance of A. anophagefferens in coastal bays.Type of Medium: Electronic ResourceURL: