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  • 1980-1984  (190,062)
  • 1980  (190,062)
Collection
Year
  • 11
    Publication Date: 2024-04-18
    Description: The freshwater sponge, Spongilla lacustris, which usually occurs in an endosymbiosis with zoochlorellae, can be rendered aposymbiotic by providing darkened conditions. Utilizing this situation, we have determined, in situ, the contribution of the algal symbiont to the growth of this association. Pigment and ultrastructure analyses demonstrated that sponges maintained under darkened conditions were effectively aposymbiotic. Growth of sponges under normal conditions was significantly greater than for aposymbiotic organisms. In two separate experiments, aposymbiotic sponges grew to only 20% and 49% of the size of normal sponges. Clearance rate determinations revealed no difference in the feeding activities of normal aposymbiotic sponges on Aerobacter aerogenes or Chlamydomonas reinhardti. The contribution from symbionts appears important to the high growth rate of this sponge and its successful utilization of soft—bottom habitats. This work represents the first in situ determination of the contribution by an algal in an endosymbiosis with an invertebrate.
    Type: Article , PeerReviewed
    Format: text
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  • 12
    Publication Date: 2024-04-14
    Keywords: Comment; Deposit type; DEPTH, sediment/rock; Description; Device type; Dredge; DRG; File name; LATITUDE; LONGITUDE; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Oneida Lake, NY, USA; Oneida-Lake-123; Position; Quantity of deposit; Sample elevation; Sample ID; Sediment type; Size; Substrate type; Uniform resource locator/link to image
    Type: Dataset
    Format: text/tab-separated-values, 13 data points
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  • 13
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    Unknown
    In:  Herausgeberexemplar
    Publication Date: 2024-03-07
    Description: Zwei Forschungsreisen (1974, 1979) führten den Verfasser nach Feuerland. Dabei wurden besonders die bipolaren Pflanzensippen studiert, die sich vorwiegend auf den dortigen Mooren finden. Das Inventar dieser amphi-arktischen Taxa umfaßt 19 Blütenpflanzen und 9 Moose, die sich zu Pflanzengesellschaften zusammenfinden und denen der Holarktis sehr ähnlich sind.
    Description: The author made two research expeditions to Tierra del Fuego. The amphi-arctic plant taxa were studied, which predominate in the peatlands. The inventory of the amphi-arctic plant taxaincludes 19 angiosperms and 9 mosses in plant associations resembling those of the holarctic regions.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: ddc:553.21 ; ddc:581.7 ; Moor ; Torf ; Vegetation ; peatland ; peat
    Language: German
    Type: doc-type:article
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  • 14
    Publication Date: 2024-02-12
    Description: Sandmischkulturen unterschiedlichen Alters sowie einige Ausgangstorfe der kultivierten Moorböden wurden auf den Gehalt und die Verteilung an organisch gebundenem Stickstoff in verschiedenen N-Fraktionen untersucht. Mit zunehmendem Alter der Sandmischkulturen steigt der Humifizierungsgrad und der Gesamtstickstoffgehalt der organischen Substanz. Parallel dazu steigt in Relation zum Gesamt-Stickstoff der Anteil des insgesamt nicht-hydrolysierbaren, vorwiegend heterozyklisch organisch gebundenen Stickstoffs stärker an, und entsprechend stärker verringert sich der Anteil des insgesamt hydrolysierbaren Stickstoffs. Im Zuge dieser Umstrukturierung der organischen Substanz nähert sich die Verteilung des organisch gebundenen Stickstoffs auf die einzelnen N-Fraktionen auch in Moorkulturböden dem Muster, wie es an isolierten Huminsäuren aus Podsolen oder Schwarzerden bekannt ist. Auch der absolute Gehalt an Aminosäure-N pro g organischer Substanz nimmt mit zunehmendem Alter der Sandmischkulturen zu, eine typische Veränderung am Verteilungsmuster der einzelnen Aminosäuren zueinander ist jedoch nicht zu erkennen. Bei den Aminozuckern tritt dagegen eine charakteristische Veränderung ein. Während die Relation von Glukosamin zu Galaktosamin im sauren Hochmoortorf etwa 1 ist, liegt diese Relation in der Fehnkultur bei 2,5.
    Description: Sand-mixed cultivated soils of different age and the original peat Substrates were analysed for their nitrogen content and for their distribution of organically bound nitrogen in different nitrogen fractions. With increasing age of sand-mixed cultivated bogs the degree of humification and the total nitrogen content of the organic matter increase as well in these soils. Corresponding with these changes the relative amounts of non hydrolysable , heterocyclically bound nitrogen increase more than the relative amounts of total hydrolysable nitrogen. In the course of this structural change of the organic matter the distribution pattern of organically bound nitrogen in different nitrogen fractions of the sand-mixed cultivated soils becomes simular to that which is known from isolated humic acids of podsolic soils or chernozems. The absolute amount of amino-acid-ni trogen per g organic matter increases with the age of sand-mixed cultivated soils too. A typical change in the distribution pattern of the different amino acids was not observed. On the other side a typical change in the distribution pattern of amino sugars takes place. Whereas the ratio of glucosamine to galacto samine in the original high moor peat is near 1, the corresponding ratio in the older sand-mixed cultivated soil is about 2,5.
    Description: research
    Description: DFG, SUB Göttingen, DGMT
    Keywords: ddc:553.21 ; Moor ; Torf ; peat ; peatland ; Bodenkunde ; Stickstoff ; nitrogen
    Language: German
    Type: doc-type:article
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  • 15
    Publication Date: 2024-02-03
    Keywords: Ammobaculites agglutinans; Ammoscalaria pseudospiralis; Ammoscalaria tenuimargo; Atlantic Ocean; BCR; Bolivina dilitata dilitatissima; Bolivina pacifica; Bolivina striatula; Bolivina subaenariensis; Box corer (Reineck); Bulimina aculeata; Bulimina costata; Bulimina gibba; Cancris auriculus; Cassidulina carinata; Cibicides pseudoungerianus; Counting 〉125 µm fraction; Cribrostomoides cf. triangularis; Cribrostomoides jeffreysii; Cribrostomoides sp.; DEPTH, sediment/rock; Dorothia rudis; Eggerella arctica; Eggerella scabra; Ehrenbergina undulata; Elevation of event; Elphidium macellum; Event label; Foraminifera, benthic living; Fursenkoina fusiformis; Fursenkoina mexicana; GIK/IfG; GIK13213-1; GIK13214-1; GIK13215-1; GIK13216-1; GIK13217-1; GIK13219-1; GIK13220-1; GIK13221-1; GIK13222-1; GIK13223-1; GIK13224-1; GIK13225-2; GIK13229-1; GIK13230-1; GIK13231-1; GIK13232-1; GIK13233-1; GIK13234-1; GIK13235-1; GIK13236-1; GIK13237-1; GIK13238-1; Globobulimina cf. glabra; Globobulimina turgida; Gyroidina umbonata; Hanzawaia concentrica; Hanzawaia sp.; Hoeglundina elegans; Institute for Geosciences, Christian Albrechts University, Kiel; Latitude of event; Lenticulina orbicularis; Liebusella goesi; Longitude of event; Melonis barleeanus; Nonion asterizans; Nonionella cordiformis; Nouria polymorphinoides; off West Africa; Phyllanthus maderaspatensis; Planulina ariminensis; Planulina wuellerstorfi; Quinqueloculina spp.; Rectuvigerina arquatensis; Rectuvigerina phlegeri; Reophax aduncus; Reophax calcareus; Reophax cf. pilulifer; Reophax dentaliniformis; Reophax scorpiurus; Saccammina sp.; Siphonaperta sp.; Spiroloculina depressa; Suggrunda eckisi; Textularia panamensis; Textularia pseudogramen; Textularia sagittula; Trifarina elongatastriata; Trifarina fornasinii; Trochammina globigeriniformis; Uvigerina peregrina dirupta; Uvigerina spp.; VA-10/3; Valdivia (1961); Valvulineria laevigata
    Type: Dataset
    Format: text/tab-separated-values, 1320 data points
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  • 16
    Publication Date: 2024-02-03
    Keywords: Ammobaculites agglutinans; Ammoscalaria pseudospiralis; Ammoscalaria tenuimargo; Atlantic Ocean; BCR; Bolivina dilitata dilitatissima; Bolivina pacifica; Bolivina striatula; Bolivina subaenariensis; Box corer (Reineck); Bulimina aculeata; Bulimina costata; Bulimina gibba; Cancris auriculus; Cassidulina carinata; Cibicides pseudoungerianus; Counting 〉125 µm fraction; Cribrostomoides cf. triangularis; Cribrostomoides jeffreysii; Cribrostomoides sp.; DEPTH, sediment/rock; Dorothia rudis; Eggerella arctica; Eggerella scabra; Ehrenbergina undulata; Elevation of event; Elphidium macellum; Event label; Foraminifera, benthic dead; Fursenkoina fusiformis; Fursenkoina mexicana; GIK/IfG; GIK13213-1; GIK13214-1; GIK13215-1; GIK13216-1; GIK13217-1; GIK13219-1; GIK13220-1; GIK13221-1; GIK13222-1; GIK13223-1; GIK13224-1; GIK13225-2; GIK13229-1; GIK13230-1; GIK13231-1; GIK13232-1; GIK13233-1; GIK13234-1; GIK13235-1; GIK13236-1; GIK13237-1; GIK13238-1; Globobulimina cf. glabra; Globobulimina turgida; Gyroidina umbonata; Hanzawaia concentrica; Hanzawaia sp.; Hoeglundina elegans; Institute for Geosciences, Christian Albrechts University, Kiel; Latitude of event; Lenticulina orbicularis; Liebusella goesi; Longitude of event; Melonis barleeanus; Nonion asterizans; Nonionella cordiformis; Nouria polymorphinoides; off West Africa; Phyllanthus maderaspatensis; Planulina ariminensis; Planulina wuellerstorfi; Quinqueloculina spp.; Rectuvigerina arquatensis; Rectuvigerina phlegeri; Reophax aduncus; Reophax calcareus; Reophax cf. pilulifer; Reophax dentaliniformis; Reophax scorpiurus; Saccammina sp.; Siphonaperta sp.; Spiroloculina depressa; Suggrunda eckisi; Textularia panamensis; Textularia pseudogramen; Textularia sagittula; Trifarina elongatastriata; Trifarina fornasinii; Trochammina globigeriniformis; Uvigerina peregrina dirupta; Uvigerina spp.; VA-10/3; Valdivia (1961); Valvulineria laevigata
    Type: Dataset
    Format: text/tab-separated-values, 1320 data points
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  • 17
    Publication Date: 2024-02-03
    Keywords: Amphistegina sp.; Astrononion sp.; Atlantic Ocean; Bulimina aculeata; Bulimina exilis; Bulimina subacuminata; Cibicides bradyi; Counting 〉125 µm fraction; DEPTH, sediment/rock; Elphidium advenum; Elphidium complanatum; Elphidium macellum; Epistominella exigua; Epistominella smithi; Foraminifera, benthic; Foraminifera, benthic, other; GIK/IfG; GIK13239-1; Globobulimina hoeglundi; Globobulimina turgida; Hanzawaia concentrica; Hoeglundina elegans; Institute for Geosciences, Christian Albrechts University, Kiel; KAL; Kasten corer; Melonis barleeanus; Melonis pompilioides; Nonion asterizans; Nonionella opima; Planulina wuellerstorfi; Pyrgo murrhina; Quinqueloculina ex gr. Q. seminula; Textularia spp.; Trifarina fornasinii; Uvigerina spp.; VA-10/3; Valdivia (1961)
    Type: Dataset
    Format: text/tab-separated-values, 837 data points
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  • 18
    Publication Date: 2024-02-03
    Keywords: Amphistegina sp.; Astrononion sp.; Atlantic Ocean; Bulimina aculeata; Bulimina exilis; Bulimina subacuminata; Cibicides bradyi; Counting 〉125 µm fraction; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Elphidium advenum; Elphidium complanatum; Elphidium macellum; Epistominella exigua; Epistominella smithi; Foraminifera, benthic; Foraminifera, benthic, other; GIK/IfG; GIK13292-3; Globobulimina hoeglundi; Globobulimina turgida; Hanzawaia concentrica; Hoeglundina elegans; Institute for Geosciences, Christian Albrechts University, Kiel; KAL; Kasten corer; Melonis barleeanus; Melonis pompilioides; Nonion asterizans; Nonionella opima; Planulina wuellerstorfi; Pyrgo murrhina; Quinqueloculina ex gr. Q. seminula; Textularia spp.; Trifarina fornasinii; Uvigerina spp.; VA-10/3; Valdivia (1961)
    Type: Dataset
    Format: text/tab-separated-values, 464 data points
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  • 19
    Publication Date: 2024-02-03
    Keywords: BCR; Bolivina cincta; Bolivina compacta; Bolivina difformis; Bolivina ex gr. B. dilatata; Bolivina ex gr. B. pacifica; Bolivina pseudoplicata; Bolivina striatula; Bolivina tongi; Bolivina variabilis; Box corer (Reineck); Bulimina alazanensis; Bulimina mexicana; Bulimina striata; Bulimina subulata; Buliminella sp.; Cancris auriculus; Cassidulina crassa; Cassidulina laevigata; Cassidulina subglobosa; Chilostomella ovoidea; Cibicides lobatulus; Cibicidoides robertsonianus; Counting 〉63 µm fraction; Cribrostomoides jeffreysii; Cribrostomoides triangularis; Cribrostomoides trochamminiforme; DEPTH, sediment/rock; East Atlantic; Ehrenbergina undulata; Elevation of event; Elphidium advenum; Epistominella exigua; Epistominella levicula; Event label; Fursenkoina fusiformis; Gavelinopsis praegeri; Gavelinopsis translucens; GIK/IfG; GIK12301-4; GIK12302-3; GIK12303-2; GIK12304-3; GIK12305-2; GIK12306-2; GIK12307-3; GIK12308-2; GIK12309-1; GIK12310-1; GIK12311-1; GIK12312-2; GIK12313-2; GIK12314-1; GIK12315-1; GIK12316-1; GIK12317-1; GIK12318-1; GIK12319-1; GIK12320-1; GIK12321-1; GIK12322-2; GIK12323-1; GIK12324-1; GIK12325-2; GIK12326-3; GIK12327-2; GIK12328-2; GIK12329-2; GIK12330-1; GIK12332-1; GIK12338-1; GIK12339-2; GIK12340-5; GIK12341-1; GIK12342-1; GIK12343-1; GIK12344-1; GIK12345-3; GIK12346-1; GIK12347-1; GIK12350-1; GIK12352-1; GIK12354-1; GIK12390-1; GIK12391-1; Globobulimina hoeglundi; Globobulimina sp.; Gyroidinoides cf. perlucida; Hanzawaia rhodiensis; Hoeglundina elegans; Hormosina guttifera; Institute for Geosciences, Christian Albrechts University, Kiel; KAL; Kasten corer; Latitude of event; Liebusella goesi; Longitude of event; M25; Melonis zaandamae; Meteor (1964); MUC; MultiCorer; Neoconcorbina millettii; Nonion asterizans; Oridorsalis umbonatus; Planorbulina mediterranensis; Pullenia quinqueloba; Rectuvigerina arquatensis; Rectuvigerina phlegeri; Remaneica spp.; Reophax fusiformis; Rosalina globularis; Saccorhiza ramosa; Textularia pseudogramen; Textularia sagittula; Trifarina angulosa; Trifarina bradyi; Trifarina fornasinii; Trochammina cf. advena; Trochammina globigeriniformis; Uvigerina bononiensis; Uvigerina finisterrensis; Uvigerina peregrina; Valvulineria laevigata; van Veen Grab; VGRAB
    Type: Dataset
    Format: text/tab-separated-values, 2806 data points
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  • 20
    Publication Date: 2024-02-03
    Keywords: Ammonia beccarii; Ammoscalaria pseudospiralis; Amphicoryna scalaris; BCR; Box corer (Reineck); Bulimina aculeata; Cancris auriculus; Ceratobulimina pacifica; Cibicides lobatulus; Cibicidoides kullenbergi; Cibicidoides pseudoungerianus; Cibicidoides wuellerstorfi; Counting 〉250 µm fraction; Cribrostomoides cf. triangularis; Cribrostomoides subglobosum; Cyclammina pusilla; DEPTH, sediment/rock; Discanomalina vermiculata; Dorothia rudis; East Atlantic; Eggerella arctica; Ehrenbergina undulata; Elevation of event; Elphidium crispum; Event label; GIK/IfG; GIK12301-4; GIK12302-3; GIK12303-2; GIK12304-3; GIK12305-2; GIK12306-2; GIK12307-3; GIK12308-2; GIK12309-1; GIK12310-1; GIK12311-1; GIK12312-2; GIK12313-2; GIK12314-1; GIK12315-1; GIK12316-1; GIK12317-1; GIK12320-1; GIK12322-2; GIK12323-1; GIK12324-1; GIK12325-2; GIK12326-3; GIK12327-2; GIK12328-2; GIK12329-2; GIK12330-1; GIK12332-1; GIK12338-1; GIK12339-2; GIK12340-5; GIK12341-1; GIK12342-1; GIK12343-1; GIK12344-1; GIK12345-3; GIK12346-1; GIK12347-1; GIK12350-1; GIK12352-1; GIK12354-1; GIK12390-1; Globobulimina hoeglundi; Globobulimina sp.; Hanzawaia rhodiensis; Hoeglundina elegans; Hormosina globulifera; Hyalinea balthica; Institute for Geosciences, Christian Albrechts University, Kiel; Jacullela obtusa; KAL; Kasten corer; Latitude of event; Liebusella goesi; Longitude of event; M25; Marsipella elongata; Melonis zaandamae; Meteor (1964); MUC; MultiCorer; Nonion asterizans; Oridorsalis umbonatus; Planorbulina mediterranensis; Planulina ariminensis; Pyrgo fornasinii; Pyrgo murrhina; Quinqueloculina ex gr. Q. pulchella; Quinqueloculina ex gr. Q. vulgaris; Rhabdammina abyssorum; Saccorhiza ramosa; Sigmoilopsis schlumbergeri; Siphotextularia caroliniana; Sphaeroidina bulloides; Textularia panamensis; Textularia pseudogramen; Trifarina fornasinii; Uvigerina elongata; Uvigerina finisterrensis; Uvigerina peregrina; Uvigerina pygmaea; van Veen Grab; VGRAB
    Type: Dataset
    Format: text/tab-separated-values, 2058 data points
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