Results 11 to 20 of about 5,478 (194)

Deep-water coral records of glacial and recent ocean-atmosphere dynamics from the Perth Canyon in the southeast Indian Ocean

open access: yesQuaternary Science Advances, 2022
We present radiocarbon and neodymium isotope records from accurately dated (U-series) live and fossil (
Julie A. Trotter   +6 more
doaj   +1 more source

Effect of carbonate ion concentration and irradiance on calcification in planktonic foraminifera [PDF]

open access: yesBiogeosciences, 2010
The effect of carbonate ion concentration ([CO32−]) on calcification rates estimated from shell size and weight was investigated in the planktonic foraminifera Orbulina universa and Globigerinoides sacculifer. Experiments on G.
F. Lombard   +3 more
doaj   +1 more source

Die bisherigen Ergebnisse von C14-Messungen und paläolithischen Untersuchungen für die Gliederung und Chronologie des Jungpleistozäns in Mitteleuropa und den Nachbargebieten [PDF]

open access: yesEiszeitalter und Gegenwart, 1958
Das Letzte Interglazial (Riß/Würm oder Warthe/Weichsel = Eem-Interglazial) ist pollenanalytisch und durch die marine Eem-Fauna, auf dem Lande durch die letzte Antiquus- und Banatica-Fauna.
H. Gross
doaj   +1 more source

Particulate organic matter controls benthic microbial N retention and N removal in contrasting estuaries of the Baltic Sea [PDF]

open access: yesBiogeosciences, 2019
Estuaries worldwide act as “filters” of land-derived nitrogen (N) loads, yet differences in coastal environmental settings can affect the N filter function.
I. Bartl   +6 more
doaj   +1 more source

Transfer of environmental signals from the surface to the underground at Ascunsă Cave, Romania [PDF]

open access: yesHydrology and Earth System Sciences, 2017
We present here the results of a 4-year environmental monitoring program at Ascunsă Cave (southwestern Romania) designed to help us understand how climate information is transferred through the karst system and archived by speleothems.
V. Drăguşin   +13 more
doaj   +1 more source

Growth rings show limited evidence for ungulates’ potential to suppress shrubs across the Arctic

open access: yesEnvironmental Research Letters, 2022
Global warming has pronounced effects on tundra vegetation, and rising mean temperatures increase plant growth potential across the Arctic biome. Herbivores may counteract the warming impacts by reducing plant growth, but the strength of this effect may ...
Katariina E M Vuorinen   +40 more
doaj   +1 more source

Aperçu du Quaternaire à l’embouchure du Saguenay, Québec [PDF]

open access: yes, 1996
À l'embouchure du Saguenay, près de la tête du chenal Laurentien, le Quaternaire est représenté par un ensemble original d'unités morpho-sédimentaires dont le delta perché (120-125 m) de Tadoussac, le remblaiement fluvio-marin de la vallée de la rivière ...
Dionne, Jean-Claude, Occhietti, Serge
core   +1 more source

Observations sur le Quaternaire de la rivière Boyer, côte sud de l’estuaire du Saint-Laurent, Québec [PDF]

open access: yes, 1985
La vallée de la rivière Boyer, à une quarantaine de kilomètres en aval de Québec, est remblayée par des dépôts quaternaires appartenant au Wisconsinien et à l'épisode marin goldthwaitien.
Dionne, Jean-Claude
core   +1 more source

Styryllactones and Acetogenins from the Fruits of

open access: yesNatural Product Communications, 2014
Two new styryllactones, macrocalactone (1) and 3-deoxycardiobutanolide (2), were isolated from the fruits of Goniothalamus macrocalyx Ban (Annonaceae), together with seven known compounds including four acetogenins, annonacin (3), solamin (4 ...
Quy Hung Trieu   +9 more
doaj   +1 more source

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