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  • PANGAEA  (12)
  • Bremerhaven  (1)
  • 2010-2014  (13)
Document type
Keywords
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Language
Years
Year
  • 1
    Online Resource
    Online Resource
    Vervollständigung der Zeitreihen des StUK während der Betriebsphase und Ermittlung von Veränderungen des Benthos durch Ausweitung des anlagenbezogenen Effektmonitorings : Schlussbericht zum Projekt: Ökologische Begleitforschung am Offshore-Testfeldvorhaben alpha ventus zur Evaluierung des Standarduntersuchungskonzeptes des BSH (StUKplus) : Laufzeit des Projektes: 01.10.2008 - 31.03.2012 (2014)
    Bremerhaven
    Details Availability
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online-Ressource (86 S., 2,54 MB) , Illustrationen, graphische Darstellungen
    URL: https://edocs.tib.eu/files/e01fb16/845589989.pdf
    URL: https://doi.org/10.2314/GBV:845589989
    DOI: 10.2314/GBV:845589989
    Language: German
    Note: Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Förderkennzeichen BMU 0327689A , Systemvoraussetzungen: Acrobat reader. , Mit deutscher Zusammenfassung
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  • 2
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    Effects of ocean acidification on growth and physiology of Ulva lactuca (Chlorophyta) in a rockpool-scenario, link to supplementary data (2013)
    PANGAEA
    In:  Supplement to: Olischläger, Mark; Bartsch, Inka; Gutow, Lars; Wiencke, Christian (2013): Effects of ocean acidification on growth and physiology of Ulva lactuca (Chlorophyta) in a rockpool-scenario. Phycological Research, 61(3), 180-190, https://doi.org/10.1111/pre.12006
    Details
    Publication Date: 2023-06-13
    Description: Rising atmospheric CO2-concentrations will have severe consequences for a variety of biological processes. We investigated the responses of the green alga Ulva lactuca (Linnaeus) to rising CO2-concentrations in a rockpool scenario. U. lactuca was cultured under aeraton with air containing either preindustrial pCO2 (280µatm) or for the end of the 21st century predicted (700µatm) pCO2 for 31 days. We addressed the following question: Will elevated CO2-concentrations affect photosynthesis (net photosynthesis, rETR(max), Fv/Fm, pigment composition) and growth of U. lactuca in rockpools with limited water exchange? Two phases of the experiment were distinguished: In the initial phase (day 1-4) the Seawater Carbonate System (SWCS) of the culture medium could be adjusted to the selected atmospheric pCO2 condition by continuous aeration with target pCO2 values. In the second phase (day 4-31) the SWCS was largely determined by the metabolism of the growing U. lactuca biomass. In the initial phase, Fv/Fm and rETR(max) were only slightly elevated at high CO2-concentrations whereas growth was significantly enhanced. After 31 days the Chl a content of the thalli was significantly lower under future conditions and the photosynthesis of thalli grown under preindustrial conditions was not dependent on external carbonic anhydrase. Biomass increased significantly at high CO2-concentrations. At low CO2-concentrations most adult thalli disintegrated between day 14 and 21, whereas at high CO2-concentrations most thalli remained integer until day 31. Thallus disintegration at low CO2-concentrations was mirrored in a drastic decline in seawater DIC and HCO3-. Accordingly, the SWCS differed significantly between the treatments. Our results indicated a slight enhancement of photosynthetic performance and significantly elevated growth of U. lactuca at future CO2-concentrations. The accelerated thallus disintegration at high CO2-concentrations under conditions of limited water exchange indicates additional CO2 effects on the life cycle of U. lactuca when living in rockpools.
    Keywords: AWI_Coast; BIOACID; Biological Impacts of Ocean Acidification; Coastal Ecology @ AWI
    Type: Dataset
    Format: application/zip, 2.5 MBytes
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    DATA PANGAEA
  • 3
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    Effects of ocean acidification on different life-cycle stages of the kelp Laminaria hyperborea (Phaeophyceae), link to supplementary data (2012)
    PANGAEA
    Details
    Publication Date: 2023-11-23
    Description: Our objective for this study was to evaluate the influence of preindustrial and expected future atmospheric CO2 concentrations (280 µatm and 700 µatm pCO2, respectively) on different life-cycle stages of the kelp Laminaria hyperborea from Helgoland (Germany, North Sea). Zoospore germination, gametogenesis, vegetative growth, sorus formation and photosynthetic performance of vegetative and fertile tissue were examined. The contribution of external carbonic anhydrase (exCA) to C-supply for net-photosynthesis (net-PS) and the Chla- and phlorotannin content were investigated. Female gametogenesis and vegetative growth of sporophytes were significantly enhanced under the expected future pCO2. rETR(max) and net-PS of young vegetative sporophytes tended to increase performance at higher pCO2. The trend towards elevated net-PS vanished after inhibition of exCA. In vegetative sporophytes, phlorotannin content and Chla content were not significantly affected by pCO2.
    Keywords: AWI_Coast; BIOACID; Biological Impacts of Ocean Acidification; Coastal Ecology @ AWI; German Bight, North Sea; Helgoland; Meeresstation Helgoland; MULT; Multiple investigations; off_Helgoland
    Type: Dataset
    Format: application/zip, 1.7 MBytes
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    DATA PANGAEA
  • 4
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    Fuzzy coding of biological traits of macrobenthic species in the North Sea (2013)
    PANGAEA
    Details
    Publication Date: 2024-01-25
    Description: Biological traits analysis is one of the most auspicious approaches to study the ecological functioning in marine ecosystems and provides a mechanistic link to ecosystem processes and properties. We used a Biological trait analysis to examine a dataset of 334 macrofaunal species that were collected at 4 long-term stations in the North Sea between 1969-2011. This data include seventeen biological traits related to life history (e.g. reproductive type) and behavior (e.g. feeding habit) of macrofuna species. In order to include all possible attributes of species, these traits were broken down into seventy-two categories. The affinities of the species to the categories were fuzzy coded with a scoring range of 0 to 3 (0= no affinity, 1= low affinity, 2=moderate affinity and 3=high association of taxon with the trait category). Missing values were supplemented by using information from the species in the nearest taxonomic level. If the affinity of a species to a category was not identified and there was no information available for the evaluation, a score of 0 was given for all the modalities associated with that species.
    Keywords: LTER_Benthos; Macrobenthic long-term series in the German Bight
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 5
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    Fuzzy coding of biological traits of macrobenthic species in the North Sea, table 2 (2013)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-25
    Keywords: Biological traits analysis; Duration in plankton stage; Fertilization type; Flexability; Fragility; Genus; German_Bight; German Bight, North Sea; Habitat; LTER_Benthos; Macrobenthic long-term series in the German Bight; MULT; Multiple investigations; Relative mobility; Relative size; Species
    Type: Dataset
    Format: text/tab-separated-values, 1893 data points
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    DATA PANGAEA
  • 6
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    Fuzzy coding of biological traits of macrobenthic species in the North Sea, table 3 (2013)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-25
    Keywords: Adult longevity; Age at maturity; Biological traits analysis; Fecundity; Genus; German_Bight; German Bight, North Sea; LTER_Benthos; Macrobenthic long-term series in the German Bight; MULT; Multiple investigations; Size of organism; Species
    Type: Dataset
    Format: text/tab-separated-values, 1987 data points
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    DATA PANGAEA
  • 7
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    Fuzzy coding of biological traits of macrobenthic species in the North Sea, table 1 (2013)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-25
    Keywords: Adult movement; Biological traits analysis; Diet type; Enviromental position; Feeding habitat; Genus; German_Bight; German Bight, North Sea; Larval development; LTER_Benthos; Macrobenthic long-term series in the German Bight; MULT; Multiple investigations; Reproductive type; Sexual differentiation; Species
    Type: Dataset
    Format: text/tab-separated-values, 4142 data points
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    DATA PANGAEA
  • 8
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    Station list and links to master tracks in different resolutions of HEINCKE cruise HE419 (2014)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-12
    Keywords: Course; CT; DATE/TIME; HE419; HE419-track; Heincke; LATITUDE; LONGITUDE; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 3646 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Physical oceanography during HEINCKE cruise HE362 (2012)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-12
    Keywords: Attenuation, optical beam transmission; AWI_PhyOce; Calculated; Conductivity; CTD, SEA-BIRD SBE 911plus, SN 1015; CTD/Rosette; CTD-RO; Date/Time of event; Density, sigma-theta (0); DEPTH, water; Elevation of event; Event label; Fluorometer; HE362; HE362/054-1; HE362/055-1; HE362/056-1; HE362/057-1; HE362/058-1; HE362/059-1; HE362/060-1; HE362/061-1; HE362/062-1; HE362/063-1; HE362/064-1; HE362/065-1; HE362/066-1; HE362/067-1; HE362/071-4; HE362/071-5; Heincke; Latitude of event; Longitude of event; North Sea; Number of observations; Oxygen; Oxygen saturation; Physical Oceanography @ AWI; Pressure, water; Salinity; Temperature, water; Temperature, water, potential
    Type: Dataset
    Format: text/tab-separated-values, 6974 data points
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    DATA PANGAEA
  • 10
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    Seawater carbonate chemistry and effects of ocean acidification on different life-cycle stages of the kelp Laminaria hyperborea (Phaeophyceae) in a laboratory experiment (2012)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Benthos; Bicarbonate ion; BIOACID; Biological Impacts of Ocean Acidification; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chlorophyll a; Chromista; Coast and continental shelf; Dry mass; Fresh weight, complete; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); German Bight, North Sea; Germination rate; Growth/Morphology; Growth rate; Helgoland; Identification; Incubation duration; Inhibition of net photosynthesis; Irradiance; Irradiance, standard deviation; Laboratory experiment; Laminaria hyperborea; Life stage; Light:Dark cycle; Macroalgae; Maximal electron transport rate, relative; Maximum photochemical quantum yield of photosystem II; Meeresstation Helgoland; MULT; Multiple investigations; Net photosynthesis rate, oxygen; Net photosynthesis rate, oxygen, per chlorophyll a; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Ochrophyta; off_Helgoland; Oogonium formation rate; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Phlorotannins; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Replicate; Reproduction; Salinity; Single species; Species; Temperate; Temperature, water; Temperature, water, standard deviation; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 3079 data points
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    DATA PANGAEA
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