GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Digitale Medien
    Digitale Medien
    Ocean province classification using ocean colour data: observing biological signatures of variations in physical dynamics (2000)
    Oxford, UK : Blackwell Science Ltd
    Global change biology 6 (2000), S. 0 
    Details
    ISSN: 1365-2486
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie , Energietechnik , Geographie
    Notizen: We have used satellite colour data to classify ocean environments for monitoring interannual changes in the ocean. The unsupervised classification method is based on our observation that the frequency distributions of Coastal Zone Color Scanner (CZCS) annual pigment means and standard deviations are nonuniform and contain distinct clusters. The frequency distributions are used to objectively determine ocean areas with similar pigment statistical characteristics. A major separation between high variance, high pigment and lower variance, lower pigment waters is observed in terms of global ocean area. The ocean areas determined with our method reflect different bio-logical responses to variations in ocean physical dynamics. Pigment means and variances around the Joint Global Ocean Flux Study (JGOFS) Time Series stations are used as fiducial characteristics. Hawaii Ocean Time-series (HOT) station is associated with the low-variance portion of the global annual pigment distribution characteristic of the central gyres, but shows slightly higher mean and variance than the minima in the central Pacific gyre. The Bermuda Atlantic Time Series (BATS) pigment associations comprise a transitional region between the gyres and high-variance pigment areas, and circumscribe the HOT pigment associations. Together, these associations encompass 23% (HOT-like) and 48% (BATS-like) of the Northern Hemisphere open ocean. The Pacific regions delineated by the JGOFS station pigment-based patterns are similar to distributions described historically for Pacific zooplankton communities. Interannual variation for the northern hemisphere gyre area is on the order of by 10% for the 11/78–10/81 period.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2486.2000.00285.x
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Ocean annual phytoplankton carbon and new production, and annual export production estimated with empirical equations and CZCS data (2000)
    Oxford, UK : Blackwell Science Ltd
    Global change biology 6 (2000), S. 0 
    Details
    ISSN: 1365-2486
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie , Energietechnik , Geographie
    Notizen: Empirical equations are parameterized for use with chlorophyll a, derived from satellite ocean colour data, to calculate phytoplankton carbon production, phytoplankton new production, and export production. For environments in a high variance (HV) pigment statistical class, annual phytoplankton particulate organic carbon production (AIP) is linearly related to annual average in situ chlorophyll a within the near-surface layer. Linear relations were also obtained between AIP and annual new nitrogen production, and between AIP and particulate organic carbon annually exported from the euphotic zone for environments in that class. We found no relation between AIP and CSFC, or between the annual production variables, for oceanic environments characterized by low pigment variance (LV). Ratios of export production to AIP, called e, and new production to nitrogen annually used in phytoplankton production, called f, are widely used to express marine food web processes. The trends of these ratios with AIP differ between HV and LV environments. This is a result of differences in the coupling between nitrogen and carbon transfer in pelagic food webs, which contain different organism size classes in HV compared to LV environments. We applied the empirical equations to CZCS data to estimate global new and export production. The HV environments are responsible for about 40% of global ocean annual phytoplankton carbon production and 70% of global ocean annual new and export production.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2486.2000.00286.x
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Influence of penetrating solar radiation on the heat budget of the equatorial Pacific Ocean (1990)
    [s.l.] : Nature Publishing Group
    Nature 347 (1990), S. 543-545 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The significance of the penetration of solar radiation to the heat budget of the oceanic mixed layer at low latitudes has been suggested theoretically8'10 but only recently have the necessary synoptic observations of ocean transparency been available to estimate the magnitude of the associated heat ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/347543a0
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Action spectrum for a low intensity, rapid photoinhibition of mechanically stimulable bioluminescence in the marine dinoflagellates Gonyaulax catenella, G. acatenella, and G. tamarensis (1973)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 82 (1973), S. 363-372 
    Details
    ISSN: 0021-9541
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Notizen: The mechanically stimulable bioluminescence of members of the Gonyaulax catenella group can be maximally photoinhibited by exposure to as few as 1013 quanta/cm2, a factor 104 times smaller than that required for comparable photoinhibition in Gonyaulax polyedra and all other photosynthetic bioluminescent dinoflagellates investigated. Following an irradiation pulse there is an initial time lag of one minute, followed by a rapid decrease in mechanical stimulability to approximately 1% of the dark unirradiated control with a firstorder rate constant as high as 0.01 sec-1. Action spectra for all three species imply a pigment with a single absorption band having a maximum at 562 nm and a half band width of 105 nm within the spectral range 325 nm to 775 nm. Photoinhibition appears to decrease either the sensitivity of the shear receptor mechanism or the efficiency of signal transmission in the dinoflagellates, since chemically stimulable bioluminescence is unaffected by these exposures.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcp.1040820306
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    facet.materialart.
    Unbekannt
    Biological and hydrographic station data obtained in the vicinity of Nantucket Shoals, May 1978-May 1979 (2016)
    Woods Hole Oceanographic Institution
    Details
    Publikationsdatum: 2022-05-26
    Beschreibung: Six cruises were made from May, 1978 to May, 1979 to measure the regional distributions of chlorophyll, silicate, nitrate and nitrite, phosphate, temperature, and salinity in the vacinity of Nantucket Shoals on the New England continental shelf. A summary of the hydrographic observations made on the first three cruises has already been presented in Limeburner and Beardsley (1979). A summary of the biological data obtained on five of the six cruises and the hydrographic observations made during the last three cruises is presented here in graphic form.
    Beschreibung: Prepared with funds from the Department of Commerce, NOAA Office of Sea Grant under Grant #04-7-158-44104 and #04-9-MOl-149, EG&G Environmental Consultants Contract #54779, and Brookhaven National Laboratory Contract #424422-s.
    Schlagwort(e): Oceanography ; Chemical oceanography ; Marine biology ; Edgerton (Ship) Cruise NS1 ; Edgerton (Ship) Cruise NS2 ; Edgerton (Ship) Cruise NS3 ; Edgerton (Ship) Cruise NS4 ; Edgerton (Ship) Cruise NS5 ; Edgerton (Ship) Cruise NS6
    Repository-Name: Woods Hole Open Access Server
    Materialart: Technical Report
    Format: application/pdf
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...