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  • 2005-2009  (408,486)
  • 2008  (408,486)
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  • 1
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    PANGAEA
    In:  Supplement to: Iglesias-Rodriguez, Debora; Halloran, P R; Rickaby, Rosalind E M; Hall, Ian R; Colmenero-Hidalgo, Elena; Gittins, J R; Green, Darryl R H; Tyrrell, Toby; Gibbs, Samantha J; von Dassow, Peter; Rehm, E; Armbrust, E Virginia; Boessenkool, K P (2008): Phytoplankton calcification in a high-CO2 world. Science, 320(5874), 336-340, https://doi.org/10.1126/science.1154122
    Publication Date: 2024-05-27
    Description: Ocean acidification in response to rising atmospheric CO2 partial pressures is widely expected to reduce calcification by marine organisms. From the mid-Mesozoic, coccolithophores have been major calcium carbonate producers in the world's oceans, today accounting for about a third of the total marine CaCO3 production. Here, we present laboratory evidence that calcification and net primary production in the coccolithophore species Emiliania huxleyi are significantly increased by high CO2 partial pressures. Field evidence from the deep ocean is consistent with these laboratory conclusions, indicating that over the past 220 years there has been a 40% increase in average coccolith mass. Our findings show that coccolithophores are already responding and will probably continue to respond to rising atmospheric CO2 partial pressures, which has important implications for biogeochemical modeling of future oceans and climate.
    Keywords: Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Calcification rate of calcium carbonate per algae cell; Calcite saturation state; Calcium carbonate in cell; Calculated; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, organic, particulate, production per cell; Carbon/Nitrogen ratio; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Counting; Element analyser, Thermo Finnigan flash EA 1112; Emiliania huxleyi; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Experimental treatment; Flow cytometry; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Haptophyta; Laboratory experiment; Laboratory strains; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Particulate organic carbon, per cell; Pelagos; pH; Phytoplankton; Potentiometric titration, VINDTA (marianda); Primary production/Photosynthesis; Salinity; Single species; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 1237 data points
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  • 2
    Publication Date: 2024-05-27
    Keywords: 175-1078C; Afrormosia; Age model; Age model calibration; Anemia-type; Anthoceros; Anthospermum; Benguela Current, South Atlantic Ocean; Blechnum; Borreria; Buxus-type madagascaria; Counting, palynology; Cyathea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Lannea; Leea; Leg175; Leonotis; Liliaceae; Lophira; Ludwigia; Luffa; Lycopodium (Africa); Macaranga; Maerua-type; Maesa; Mallotus; Malvaceae (Africa); Manilkara; Marker, added; Marker, found; Martretia; Maytenus; Meliaceae; Melochia; Merremia; Mezoneuron-type; Mimosa pigra; Monopetalanthus; Moraceae; Morinda; Mussaenda; Myrica; Myriophyllum; Myrsine africana; Nauclea/Mitragyna; Neurada/Grielum; Nitraria; Nyctaginaceae; Nymphaea; Ocean Drilling Program; Ochnaceae undifferentiated; Ocimum; ODP; Olax; Olea; Olea capensis; Ophioglossum; Ormocarpum; Osmunda; Oxygonum; Pandanus; Papilionoideae; Paramacrolobium; Parinari; Parkinsonia; Pavonia-type; Pelargonium; Pentaclethra; Pentas; Pentzia-type; Petalidium; Phaeoceros; Phoenix; Phyla-type nodiflora; Phyllanthus; Piliostigma; Plantago; Plicosepalus; Podocarpus; Pollen, total; Polygala-type; Polygonum senegalense-type; Polypodiaceae; Potamogeton (Africa); Protea; Pseudocedrela; Pseudoprosopis; Psychotria; Psydrax-type subcordata; Pteridium; Pteris; Pterocarpus; Pycnanthus; Raphia; Restionaceae; Rhamnaceae undifferentiated; Rhizophora; Rhus-type; Rhynchosia-type; Rothmannia; Rubiaceae monade; Rubiaceae tetrade; Rytigynia; Sabicea; Salix; Salvadora persica; Salvinia; Sample code/label; Sauvagesia; Schefflera; Sclerocarya-type birrea; Scrophulariaceae (Africa); Securinega; Sesbania-type; Sherbournea; Solanum-type; Sorindeia-type; Spathodea; Spores; Spores, monolete; Spores, trilete; Spores, trilete echinate; Spores, trilete reticulate; Spores, trilete verrucate; Sterculia-type; Stereospermum; Stipularia africana; Stoebe-type; Strychnos; Swertia; Symphonia globulifera; Syzygium-type; Tamarindus/Cryptosepalum; Tapinanthus; Tarenna; Teclea-type; Tephrosia; Tessmannia; Tetrorchidium; Thymelaeaceae; Triaspis-type; Tribulus; Trichilia; Typha angustifolia-type; Typha latifolia; Uapaca; Urticaceae; Utricularia (Africa); Varia; Vigna; Virectaria; Volume; Walafrida; Welwitschia; Xyridaceae; Zanthoxylum; Zygophyllum
    Type: Dataset
    Format: text/tab-separated-values, 26400 data points
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  • 3
    Publication Date: 2024-05-23
    Description: Eine erste taxonomische Übersicht der bisher unbeschriebenen Taphoflora aus dem Unterrotliegend (Oberkarbon – Unterperm) von Niedermoschel bei Alsenz (Saar-Becken-Becken, SW-Deutschland) wird vorgestellt. Die Flora umfasst nach aktuellem Kenntnisstand folgende Taxa: Lepidostrobophyllum sp., Sphenophyllum thoniiMAHR, Sphenophyllum cf. oblongifolium (GERMAR & KAULFUSS) UNGER, Sphenophyllum spp. (unbest. Achsen), Annularia spinulosa STERNBERG, Annularia spicata (GUTBIER) SCHIMPER, Asterophyllites equisetiformis (SCHLOTHEIM ex STERNBERG) BRONGNIART, Asterophyllites longifolius (STERNBERG) BRONGNIART, cf. Palaeostachya sp., Calamites spp., Scolecopteris cf. arborescens (SCHLOTHEIM ex BRONGNIART) STUR, Pecopteris (Scolecopteris) cf. oreopteridia (SCHLOTHEIM) BRONGNIART, Pecopteris (Scolecopteris) candolleana BRONGNIART, Pecopteris (Scolecopteris) cf. densifolia GÖPPERT, Pecopteris monyi ZEILLER, Pecopteris spp. indet, Remia pinnatifida (GUTBIER) KNIGHT, Asterotheca sternbergii (GÖPPERT) STUR, Crossotheca sp., Autunia conferta (STERNBERG) KERP, Rhachiphyllum schenkii (HEYER) KERP, Dicksonites pluckenetii (SCHLOTHEIM ex STERNBERG) STERZEL, cf. Neurodontopteris auriculata (BRONGNIART) POTONIÉ, Cordaites sp., Coniferae indet., Gomphostrobus bifidus (GEINITZ) POTONIÉ, cf. Dicranophyllum gallicum GRAND´EURY sowie verschiedene, nicht näher bestimmbare karpologische Reste, Wurzeln und Problematika. Die Flora repräsentiert damit eine der diversesten, bisher bekannt gewordenen Floren aus dem Unteren Rotliegend des Saar-Nahe-Beckens. Basierend auf der taxonomischen Zusammensetzung und der autökologischen Interpretation der nachgewiesenen Taxa wird die Taphoflora als eine allochthone Vermischung mindestens zweier Vegetationseinheiten gedeutet: der ufernahen, feuchtigkeitsliebenden Vegetation (deren Reste die Taphoflora dominieren) und der Vegetation des eher trockeneren Hinterlandes.
    Description: Abstract: A first taxonomic survey of the so far undescribed taphoflora from the Lower Rotliegend (Upper Carboniferous – Lower Permian) of Niedermoschel near Alsenz (Saar-Nahe basin, Southwest Germany) is presented. The following taxa have been identified so far: Lepidostrobophyllum sp., Sphenophyllum thoniiMAHR, Sphenophyllum cf. oblongifolium (GERMAR & KAULFUSS) UNGER, Sphenophyllum spp., Annularia spinulosa STERNBERG, Annularia spicata (GUTBIER) SCHIMPER, Asterophyllites equisetiformis (SCHLOTHEIM ex STERNBERG) BRONGNIART, Asterophyllites longifolius (STERNBERG) BRONGNIART , cf. Palaeostachya sp., Calamites spp., Scolecopteris cf. arborescens (SCHLOTHEIM ex BRONGNIART) STUR, Pecopteris (Scolecopteris) cf. oreopteridia (SCHLOTHEIM) BRONGNIART, Pecopteris (Scolecopteris) candolleana BRONGNIART, Pecopteris (Scolecopteris) cf. densifolia GÖPPERT, Pecopteris monyi ZEILLER, Pecopteris spp. indet, Remia pinnatifida (GUTBIER) KNIGHT, Asterotheca sternbergii (GÖPPERT) STUR, Crossotheca sp., Autunia conferta (STERNBERG) KERP, Rhachiphyllum schenkii (HEYER) KERP, Dicksonites pluckenetii (SCHLOTHEIM ex STERNBERG) STERZEL, cf. Neurodontopteris auriculata (BRONGNIART) POTONIÉ, Cordaites sp., Coniferae indet., Gomphostrobus bifidus (GEINITZ) POTONIÉ, cf. Dicranophyllum gallicum GRAND´EURY, as well as several unidentified carpological remains, roots and problematics. Thus this flora represents one of the most diverse (in terms of species richness) floras from the Lower Rotliegend of the Saar-Nahe basin. Based on the taxonomic composition and autecological interpretations of the taxa this flora is interpretated to represent an allochthonous mix of at least two different source vegetation types: i.e. from the vegetation of wet environments (dominating the assemblage) and the vegetation of the more dry Hinterland.
    Description: 1. Einleitung 2. Geologie und Material 3. Die Flora 3.1. Lycopsiden 3.2. Sphenopsiden 3.2.1. Calamiten 3.2.2. Sphenophyllen 3.3. Farne 3.4. Pteridospermen 3.4.1. Peltaspermaceen 3.4.2. Callistophytaceen 3.4.3. Medullosaceen 3.5. Cordaiten 3.6. Koniferen 3.7. „Koniferophyten“ 3.8. Incertae sedis und Problematika 4. Taphonomie und Ökologie Schriften
    Description: research
    Keywords: ddc:561 ; Saar-Nahe-Becken ; Rotliegend ; Paläobotanik
    Language: German
    Type: doc-type:article , publishedVersion
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  • 4
    Publication Date: 2024-05-23
    Repository Name: EPIC Alfred Wegener Institut
    Type: Other , notRev
    Format: application/pdf
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  • 5
    Publication Date: 2024-05-23
    Keywords: Bottle number; CTD/Rosette; CTD-RO; DEPTH, water; DERIDGE; From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes; Gas chromatography; Hydrogen; M68/1; M68/1-64-120; M68/1-64-CTD; MARSUED3; Mass spectrometer MAP215-50; Meteor (1986); Methane; δ Helium-3
    Type: Dataset
    Format: text/tab-separated-values, 82 data points
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  • 6
    Publication Date: 2024-05-23
    Keywords: Bottle number; DEPTH, water; DERIDGE; From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes; Gas chromatography; M62/5a; M62/5b-1223-CTD-LADCP; Mass spectrometer MAP215-50; Meteor (1986); Methane; MULT; Multiple investigations; South Atlantic/subtropical; δ Helium-3
    Type: Dataset
    Format: text/tab-separated-values, 11 data points
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  • 7
    Publication Date: 2024-05-23
    Keywords: Bottle number; CTD/Rosette; CTD-RO; DEPTH, water; DERIDGE; From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes; Gas chromatography; Hydrogen; M68/1; M68/1-59-115; M68/1-59-CTD; MARSUED3; Mass spectrometer MAP215-50; Meteor (1986); Methane; δ Helium-3
    Type: Dataset
    Format: text/tab-separated-values, 59 data points
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  • 8
    Publication Date: 2024-05-23
    Keywords: Bottle number; DEPTH, water; DERIDGE; From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes; Gas chromatography; M62/5a; M62/5b-1225-CTD-LADCP; Mass spectrometer MAP215-50; Meteor (1986); Methane; MULT; Multiple investigations; South Atlantic/subtropical; δ Helium-3
    Type: Dataset
    Format: text/tab-separated-values, 21 data points
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  • 9
    Publication Date: 2024-05-23
    Keywords: Bottle number; DEPTH, water; DERIDGE; From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes; Gas chromatography; M62/5a; M62/5b-1224-CTD-LADCP; Mass spectrometer MAP215-50; Meteor (1986); Methane; MULT; Multiple investigations; South Atlantic/subtropical; δ Helium-3
    Type: Dataset
    Format: text/tab-separated-values, 19 data points
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  • 10
    Publication Date: 2024-05-23
    Keywords: Bottle number; DEPTH, water; DERIDGE; From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes; Gas chromatography; M62/5a; M62/5b-1226-CTD-LADCP; Mass spectrometer MAP215-50; Meteor (1986); Methane; MULT; Multiple investigations; South Atlantic/subtropical; δ Helium-3
    Type: Dataset
    Format: text/tab-separated-values, 13 data points
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