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  • 2010-2014  (114)
  • 2000-2004  (5)
Publikationsart
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Verlag/Herausgeber
Erscheinungszeitraum
Jahr
  • 1
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    Unbekannt
    Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait (2014)
    Elsevier
    In:  Journal of Marine Systems, 132 (April). pp. 196-207.
    Details
    Publikationsdatum: 2015-03-12
    Beschreibung: The Fram Strait is the main gateway for water, heat and sea-ice exchanges between the Arctic Ocean and the North Atlantic. The complex physical environment results in a highly variable primary production in space and time. Previous regional studies have defined key bottom-up (ice cover and stratification from melt water controlling the light availability, and wind mixing and water transport affecting the supply of nutrients) and top-down processes (heterotrophic grazing). In this study, in situ field data, remote sensing and modeling techniques were combined to investigate in detail the influence of melting sea-ice and ocean properties on the development of phytoplankton blooms in the Fram Strait region for the years 1998–2009. Satellite-retrieved chlorophyll-a concentrations from temporarily ice-free zones were validated with contextual field data. These were then integrated per month on a grid size of 20 × 20 km, resulting in 10 grids/fields. Factors tested for their influence on spatial and temporal variation of chlorophyll-a were: sea-ice concentration from satellite and sea-ice thickness, ocean stratification, water temperature and salinity time-series simulated by the ice-ocean model NAOSIM. The time series analysis for those ten ice-free fields showed a regional separation according to different physical processes affecting phytoplankton distribution. At the marginal ice zone the melting sea-ice was promoting phytoplankton growth by stratifying the water column and potentially seeding phytoplankton communities. In this zone, the highest mean chlorophyll concentration averaged for the productive season (April–August) of 0.8 mgC/m3 was observed. In the open ocean the phytoplankton variability was correlated highest to stratification formed by solar heating of the upper ocean layers. Coastal zone around Svalbard showed processes associated with the presence of coastal ice were rather suppressing than promoting the phytoplankton growth. During the twelve years of observations, chlorophyll concentrations significantly increased in the southern part of the Fram Strait, associated with an increase in sea surface temperature and a decrease in Svalbard coastal ice. Highlights • We used combination of satellite, simulated and in situ data for 1998–2009. • Stratification from sea-ice melt resulted in largest CHL at the marginal ice zone. • Stratification caused by solar warming promoted open ocean blooms. • Late retreat of Svalbard shelf ice delayed coastal blooms.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.jmarsys.2013.11.008
    Standort Signatur Einschränkungen Verfügbarkeit
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    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 2
    facet.materialart.
    Unbekannt
    Particle flux variability in the polar and Atlantic biogeochemical provinces of the Nordic Seas (2001)
    Springer
    In:  In: The Northern North Atlantic: A Changing Environment. , ed. by Schäfer, P., Ritzrau, W., Schlüter, M. and Thiede, J. Springer, Berlin, Germany, pp. 69-79.
    Details
    Publikationsdatum: 2020-04-01
    Beschreibung: A decade of particle flux measurements providse the basis for a comparison of the eastem and westem provinces ofthe Nordic Seas. Ice-related physical and biological seasonality as well as pelagic settings jointly control fluxes in the westem Polar Province which receives southward flowing water of Polar origin. Sediment trap data from this realm highlight a predominantly physical flux control which leads to exports of siliceous particles within the biological marginal ice zone as a prominent contributor. In the northward flowing waters of the eastem Atlantic Province, feeding Strategie . life histories and the succession of dominant mesozooplankters (copepods and pteropods) are central in controlling fluxes. Furthermore, more calcareous matter is exported here with a shift in flux seasonality towards surnrner/autumn. Dominant pelagic processes modeled numerically as to their impact on annual organic carbon exports for both provinces confirrn that interannual flux variability is related to changes in the respective control mechanisms. Annual organic carbon exports are strikingly similar in the Polar and Atlantic Provinces (2.4 and 2.9 g m-2 y-1 at 500 m depth). despite major differences in flux control. The Polar and Atlantic Provinces. however, can be distinguished according to annual fluxes of opal ( l.4 and 0.6 g m-2 y-1) and carbonate (6.8 and 10.4 g m-2 y-1). lnterannual variability may blur this in single years. Thus. it is vital to use multi-annual data sets when including particle exports in general biogeochemical province descriptions. Vertical flux profiles (collections from 500 m, l000 min both provinces and 300-600 m above the seafloor deviate from the general vertical decline of fluxes due to particle degradation during sinking. At depths 〉 1000 m secondary fluxes (laterally advected/re uspended particles) are often juxtaposed to primary (pelagic) fluxes, a pattem which is most prominent in the Atlantic Province. Spatial variability within theAtlantic Province remains poorly understood. and the same holds true for interannual variability. No proxies are at hand for this province to quantitatively relate fluxes to physical or biological pelagic properties. For the easonally ice-covered Polar Province a robust relationship exists between particle export and ambient ice-regime (Ramseier et al. this volume; Ramseier et al. 1999). Spatial flux pattems may be differentiated and interannual variability can be analyzed in this manner to improve our ability to couple pelagic export pattems with benthic and geochemical sedimentary processes in seasonally ice-covered seas.
    Materialart: Book chapter , NonPeerReviewed
    Format: text
    Standort Signatur Einschränkungen Verfügbarkeit
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    OceanRep: Buchkapitel
  • 3
    facet.materialart.
    Unbekannt
    Hourly meteorological observations at mooring station FGGE_METEQ1 (2010)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-10
    Schlagwort(e): ALTITUDE; DATE/TIME; FGGE_METEQ1; FGGE-Equator 79 - First GARP Global Experiment; M51; Meteor (1964); MOOR; Mooring; South Atlantic Ocean; Temperature, air; Wind direction; Wind speed
    Materialart: Dataset
    Format: text/tab-separated-values, 330 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 4
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    Unbekannt
    Hourly meteorological observations at mooring station FGGE_MET1N1 (2010)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-10
    Schlagwort(e): ALTITUDE; DATE/TIME; FGGE_MET1N1; FGGE-Equator 79 - First GARP Global Experiment; M51; Meteor (1964); MOOR; Mooring; South Atlantic Ocean; Temperature, air; Wind direction; Wind speed
    Materialart: Dataset
    Format: text/tab-separated-values, 6360 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 5
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    Unbekannt
    Hourly meteorological observations at mooring station FGGE_MET3N (2010)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-10
    Schlagwort(e): ALTITUDE; DATE/TIME; FGGE_MET3N; FGGE-Equator 79 - First GARP Global Experiment; M51; Meteor (1964); MOOR; Mooring; South Atlantic Ocean; Temperature, air; Wind direction; Wind speed
    Materialart: Dataset
    Format: text/tab-separated-values, 6237 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 6
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    Unbekannt
    Hourly meteorological observations at mooring station FGGE_MET2N2 (2010)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-10
    Schlagwort(e): ALTITUDE; DATE/TIME; FGGE_MET2N2; FGGE-Equator 79 - First GARP Global Experiment; M51; Meteor (1964); MOOR; Mooring; South Atlantic Ocean; Temperature, air; Wind direction; Wind speed
    Materialart: Dataset
    Format: text/tab-separated-values, 4950 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 7
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    Unbekannt
    Hourly meteorological observations at mooring station FGGE_METEQ2 (2010)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-10
    Schlagwort(e): ALTITUDE; DATE/TIME; FGGE_METEQ2; FGGE-Equator 79 - First GARP Global Experiment; M51; Meteor (1964); MOOR; Mooring; South Atlantic Ocean; Temperature, air; Wind direction; Wind speed
    Materialart: Dataset
    Format: text/tab-separated-values, 3000 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 8
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    Unbekannt
    Hourly meteorological observations at mooring station FGGE_MET2N1 (2010)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-10
    Schlagwort(e): ALTITUDE; DATE/TIME; FGGE_MET2N1; FGGE-Equator 79 - First GARP Global Experiment; M51; Meteor (1964); MOOR; Mooring; South Atlantic Ocean; Temperature, air; Wind direction; Wind speed
    Materialart: Dataset
    Format: text/tab-separated-values, 3817 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 9
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    Unbekannt
    Physical oceanography during METEOR cruise M51 (2010)
    PANGAEA
    Details
    Publikationsdatum: 2023-03-10
    Schlagwort(e): Atlantic Ocean; Calculated; CTD; CTD/Rosette; CTD-RO; Date/Time of event; Density, sigma-theta (0); DEPTH, water; Elevation of event; Event label; FGGE_EQ1; FGGE_EQ2; FGGE-Equator 79 - First GARP Global Experiment; HOBS; Howaldt-Bathysonde; Latitude of event; Longitude of event; M51; M51_010-1; M51_011-1; M51_012-1; M51_013-1; M51_014-1; M51_015-1; M51_016-1; M51_017-1; M51_018-1; M51_019-1; M51_020-1; M51_021-1; M51_022-1; M51_023-1; M51_024-1; M51_025-1; M51_026-1; M51_027-1; M51_028-1; M51_029-1; M51_030-1; M51_031-1; M51_032-1; M51_033-1; M51_034-1; M51_035-1; M51_042-1; M51_043-2; M51_044-1; M51_045-1; M51_046-1; M51_047-1; M51_048-1; M51_049-2; M51_050-1; M51_051-1; M51_052-1; M51_053-1; M51_054-1; M51_055-1; M51_056-1; M51_057-1; M51_058-1; M51_059-1; M51_060-1; M51_061-1; M51_062-1; M51_063-1; M51_064-1; M51_065-1; M51_066-1; M51_071-1; M51_072-2; M51_073-2; M51_075-1; M51_076-1; M51_077-1; M51_078-1; M51_079-1; M51_080-1; M51_081-1; M51_082-1; M51_083-1; M51_084-1; M51_085-1; M51_086-1; M51_087-1; M51_088-1; M51_090-2; M51_091-1; M51_092-1; M51_093-1; M51_094-1; M51_095-1; M51_096-1; M51_097-1; M51_098-2; M51_099-1; M51_100-1; M51_101-1; M51_102-1; M51_102-2; M51_103-1; M51_104-1; M51_105-1; M51_106-1; M51_107-1; M51_108-2; M51_109-1; M51_110-1; M51_111-1; M51_112-1; M51_113-2; M51_114-1; M51_115-1; M51_116-2; M51_117-2; M51_122-1; M51_123-1; M51_124-1; M51_125-1; M51_126-2; M51_127-1; M51_128-1; M51_129-1; M51_130-1; M51_131-1; M51_132-1; M51_134-2; M51_135-1; M51_136-1; M51_137-1; M51_138-1; M51_139-1; M51_140-1; M51_141-1; M51_142-1; M51_143-2; M51_144-1; M51_145-1; M51_146-1; M51_147-1; M51_148-1; M51_149-1; M51_150-2; M51_151-2; M51_152-2; M51_153-2; M51_154-2; M51_160-1; M51_161-1; M51_162-1; M51_163-1; M51_164-1; M51_165-1; M51_166-1; M51_167-1; M51_168-1; M51_169-1; M51_170-1; M51_171-1; M51_172-1; M51_173-1; M51_174-1; M51_175-1; M51_176-1; M51_177-1; M51_178-1; M51_179-1; M51_180-1; M51_181-2; M51_182-1; M51_183-1; M51_184-1; M51_185-1; M51_186-1; M51_197-1; M51_197-10; M51_197-11; M51_197-12; M51_197-2; M51_197-3; M51_197-4; M51_197-5; M51_197-6; M51_197-7; M51_197-8; M51_197-9; M51_199-1; M51_199-10; M51_199-11; M51_199-12; M51_199-13; M51_199-14; M51_199-15; M51_199-2; M51_199-3; M51_199-4; M51_199-5; M51_199-6; M51_199-7; M51_199-8; M51_199-9; M51_200-1; M51_201-1; M51_202-1; M51_203-1; M51_204-1; M51_205-1; M51_206-1; M51_207-1; M51_208-1; M51_209-1; M51_210-1; M51_211-1; M51_212-2; M51_213-2; M51_214-2; M51_215-2; M51_216-1; M51_217-2; M51_218-1; M51_219-1; M51_220-1; M51_221-2; M51_222-1; M51_223-1; M51_224-2; M51_225-1; M51_226-1; M51_227-1; M51_227-10; M51_227-2; M51_227-3; M51_227-4; M51_227-5; M51_227-6; M51_227-7; M51_227-8; M51_227-9; M51_229-1; M51_229-2; M51_231-2; M51_232-1; M51_233-1; M51_234-1; M51_235-1; M51_236-2; M51_237-1; M51_238-2; M51_240-1; M51_241-1; M51_242-2; M51_243-1; M51_244-1; M51_245-1; M51_246-1; M51_247-2; M51_248-1; M51_249-1; M51_250-1; M51_251-1; M51_252-1; M51_253-1; M51_254-1; M51_255-2; M51_256-1; M51_257-1; M51_258-2; M51_260-1; M51_261-2; M51_262-1; M51_263-1; M51_264-1; M51_265-1; M51_266-1; M51_267-2; M51_268-1; M51_269-1; M51_270-1; M51_271-1; M51_272-1; M51_273-2; M51_274-1; M51_275-1; M51_276-1; M51_277-1; M51_278-1; M51_279-1; M51_280-1; M51_286-2; M51_286-4; M51_291-1; M51_292-2; M51_293-1; M51_294-2; M51_295-1; M51_296-1; M51_297-1; M51_298-1; M51_299-1; M51_300-1; M51_301-2; M51_302-1; M51_305-1; M51_306-1; M51_307-1; M51_308-1; M51_309-2; M51_310-1; M51_311-1; M51_312-1; M51_313-1; M51_314-1; M51_315-1; M51_316-1; M51_317-1; M51_318-4; M51_320-2; M51_321-1; M51_322-1; M51_323-2; M51_324-1; M51_325-1; M51_326-1; M51_329-4; M51_330-1; M51_331-1; M51_333-2; M51_334-1; M51_335-1; M51_336-1; M51_337-1; M51_338-1; M51_339-1; M51_341-1; M51_342-1; M51_343-1; M51_344-2; M51_345-1; M51_346-1; M51_B0105N; M51_B0105S; M51_B0110N; M51_B0110S; M51_B0115N; M51_B0115S; M51_B0120N; M51_B0120S; M51_B0125N; M51_B0130N; M51_B0205N; M51_B0205S; M51_B0210N; M51_B0210S; M51_B0215N; M51_B0215S; M51_B0220N; M51_B0220S; M51_B0230N; M51_B0305N; M51_B0305S; M51_B0310N; M51_B0310S; M51_B0315N; M51_B0315S; M51_B0320N; M51_B0320S; M51_B0325N; M51_B0330N; M51_B0405N; M51_B0405S; M51_B0410N; M51_B0410S; M51_B0415N; M51_B0415S; M51_B0420N; M51_B0420S; M51_B0425N; M51_B0430N; M51_B04EQ; M51_B0505N; M51_B0505S; M51_B0510N; M51_B0510S; M51_B0515N; M51_B0515S; M51_B0520N; M51_B0520S; M51_B0525N; M51_B0530N; M51_B05EQ; M51_B0605N; M51_B0605S; M51_B0610N; M51_B0610S; M51_B0615N; M51_B0620N; M51_B0625N; M51_B0630N; M51_B06EQ; M51_B0705N; M51_B0705S; M51_B0710N; M51_B0710S; M51_B0715N; M51_B0715S; M51_B0720N; M51_B0720S; M51_B0725N; M51_B0730N; M51_B07EQ; M51_B0805N; M51_B0805S; M51_B0810N; M51_B0810S; M51_B0815N; M51_B0815S; M51_B0820N; M51_B0820S; M51_B0825N; M51_B0830N; M51_B08EQ; M51_B0905N; M51_B0905S; M51_B0910N; M51_B0910S; M51_B0915N; M51_B0915S; M51_B0920N; M51_B0920S; M51_B0925N; M51_B0930N; M51_B1005N; M51_B1005S; M51_B1010N; M51_B1010S; M51_B1015N; M51_B1015S; M51_B1020N; M51_B1025N; M51_B1030N; M51_B10EQ; M51_BFS062; M51_BFS09E; Meteor (1964); MOOR; Mooring; Pressure, water; Salinity; South Atlantic Ocean; Temperature, water
    Materialart: Dataset
    Format: text/tab-separated-values, 998682 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 10
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    Unbekannt
    Amphipods in sediment traps of the eastern Fram Strait (2013)
    PANGAEA
    In:  Supplement to: Kraft, Angelina; Bauerfeind, Eduard; Nöthig, Eva-Maria; Klages, Michael; Beszczynska-Möller, Agnieszka; Bathmann, Ulrich (2013): Amphipods in sediment traps of the eastern Fram Strait with focus on the life-history of the lysianassoid Cyclocaris guilelmi. Deep Sea Research Part I: Oceanographic Research Papers, 73, 62-72, https://doi.org/10.1016/j.dsr.2012.11.012
    Details
    Publikationsdatum: 2023-03-16
    Beschreibung: Life-cycle characteristics of the free-swimming lysianassoid amphipod Cyclocaris guilelmi were investigated and compared to those of other regularly appearing amphipods in the Arctic deep-sea community. In this context we analysed time-series data of meso- and bathypelagic amphipods collected as swimmers in moored sediment traps from 2004 to 2008 at the deep-sea long-term observatory HAUSGARTEN (79°N/4°E) in the eastern Fram Strait, Arctic Ocean. Six mesopelagic and three bathypelagic deep-sea amphipod species regularly occurred in the traps. The lysianassoid C. guilelmi showed a stable interannual population size and seasonal peaks in its occurrence from August to February during the five-year sampling period. The investigation of its population structure and reproduction ecology indicated year-round breeding behavior of this species. Up to 4 cohorts consisting mainly of juvenile and female C. guilelmi were observed. We conclude that C. guilelmi plays an important role within the Arctic amphipod deep water community.
    Schlagwort(e): Hausgarten; Long-term Investigation at AWI-Hausgarten off Svalbard
    Materialart: Dataset
    Format: application/zip, 5 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
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