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phytoplankton

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Journal Article
Journal: Elements
Published: 01 February 2022
Elements (2022) 18 (1): 27–33.
... organisms such as phytoplankton and macroalgae, but also via sea salts. On land, terrestrial ecosystems (coastal salt marshes; soils, including fungi; tropical and subtropical plants; wetlands; salt lakes) are also significant contributors together with volcanoes (through passive and eruptive degassing...
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Journal Article
Published: 12 November 2021
Geological Magazine (2022) 159 (7): 1071–1092.
... evidence for bacterially dominated primary production on Baltica and the EEP in the upper Ediacaran strata (Pehr et al . 2018 ). Prasinophytes are generally successful in low diversities of other phytoplankton taxa and in an aftermath of crises, which labels them disaster-taxa (e.g. van de Schootbrugge...
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Series: Geological Society, London, Special Publications
Published: 03 November 2021
DOI: 10.1144/SP514-2020-167
EISBN: 9781786209993
... and geochemical techniques) was applied to the study of the organic content of the T-OAE of the Paris Basin, whose phytoplanktonic origin has been previously inferred by its geochemical signature. The top of the tenuicostatum Zone is characterized by palynomorphs and marine phytoplankton-derived amorphous...
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Series: Geological Society, London, Special Publications
Published: 21 September 2021
DOI: 10.1144/SP511-2020-55
EISBN: 9781786209986
... to marine NPP groups Microphytoplanktonic NPP Marine NPP assemblages comprise two major groups of primarily (although not exclusively) phytoplanktonic micro-organisms: the Dinoflagellata, Acritarcha and a smaller group, the Prasinophyta. The dinoflagellate NPP are well known, as shown...
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Series: GSA Special Papers
Published: 12 August 2021
DOI: 10.1130/2018.2536(01)
EISBN: 9780813795362
..., in the form of greater amounts of green algae and greater percentages of diatom phytoplankton, indicate increased levels of lake primary productivity in response to warming. Principal component analysis (PCA) distinctly resolves the Pleistocene from the Holocene diatom flora. The Pleistocene flora...
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Journal Article
Journal: Geology
Published: 17 January 2020
Geology (2020) 48 (4): 328–332.
... would have helped to sustain phytoplankton, as shown by the paired increase in the abundance of long-chain waxy n -alkanes (C 25 –C 33 ) and C 29 steranes (0.3–0.56; Figs. 2G and 2F ) from plants and green algae ( Eglinton and Hamilton, 1967 ; Volkman, 1986 ; Kodner et al., 2008 ). The 3β-MeH index...
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Journal Article
Published: 13 December 2019
Journal of the Geological Society (2020) 177 (2): 315–324.
... (chitinozoans) and marine phytoplankton (acritarchs and prasinophytes) all show significant endemism. They are depauperate in some respects, missing common species found elsewhere, but also containing many endemic taxa. Measures of similarity and cluster analysis reveal little relatedness to other contemporary...
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Journal Article
Published: 07 January 2019
Geological Magazine (2020) 157 (6): 1012–1021.
... of enhanced terrestrial aridity in the Himalayan foreland. The three-end-member simple mixing model, estimating the relative contributions of SOM from terrestrial C3 and C4 plants and marine phytoplankton, supports our interpretation of the distribution of C3 and C4 land plants in the terrestrial catchment...
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Journal Article
Journal: Elements
Published: 01 December 2018
Elements (2018) 14 (6): 367.
... couplings. In times of global change, these amplifications may have a profound impact on our future. Let's begin with the tiny marine plants called phytoplankton and their production at the ocean's surface. These plants are the base of the marine food web and, through their photosynthetic activity carry...
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Journal Article
Journal: Elements
Published: 01 December 2018
Elements (2018) 14 (6): 385–390.
...Maeve C. Lohan; Alessandro Tagliabue Trace metals are essential for life in the oceans but are present in extremely low concentrations. The availability of trace elements in surface waters frequently regulates the growth of microscopic marine plants called phytoplankton. As phytoplankton...
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Journal Article
Published: 12 July 2018
Journal of the Geological Society (2018) 175 (5): 716–720.
... the Proterozoic (e.g. Reinhard et al. 2017 ). Autotrophic aquatic biomass may have been smaller before eukaryotic phytoplankton rose to dominance ( Falkowski et al. 2004 ), and heterotrophic aquatic biomass (today twice as large as autotrophic biomass) would have been much smaller prior to the stepwise...
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Journal Article
Published: 01 July 2018
Russ. Geol. Geophys. (2018) 59 (7): 864–890.
... of phytoplankton significantly increased, indicating the onset of transgression, which affected largely coastal landscapes and type of vegetation: The forests dominated by conifers were gradually succeeded by forests mostly composed of Ginkgoaceae. * Corresponding author. E-mail address : DzyubaOS...
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Journal Article
Journal: Geology
Published: 15 February 2018
Geology (2018) 46 (4): 307–310.
.... In particular, high-nutrient, low-chlorophyll (HNLC) areas where phytoplankton growth is critically iron-limited, such as the subarctic Pacific Ocean and the Southern Ocean, are proposed to respond to increases in bioavailable Fe supply with enhanced phytoplankton productivity and carbon export to the seafloor...
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Journal Article
Journal: GSA Bulletin
Published: 20 December 2017
GSA Bulletin (2018) 130 (5-6): 941–951.
.... However, oxygen-producing phytoplankton may have also been capable of supplying the necessary oxidizing power. Here, we revisit the question of the anoxygenic and oxygenic phytoplankton populations necessary to account for banded iron formation deposition and quantify the amount of selected trace elements...
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Journal Article
Published: 10 November 2017
Bulletin de la Société Géologique de France (2017) 188 (5): 29.
..., whereas the oil-shales were dominated either by a mixing of terrestrial particles and lacustrine phytoplanktonic/bacterial organic matter (OM), or by a lacustrine OM that suffered biodegradation within the water column. During the Autunian, an increasing trend of degraded lacustrine OM concentration...
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Journal Article
Published: 01 February 2016
Russ. Geol. Geophys. (2016) 57 (2): 316–328.
... (climatic changes, endogenous methane) factors on the hydrochemical composition and phytoplankton of mountain lakes in East Siberia for the last 210 years. The lacustrine diatom community responded to the intense acid precipitation that led to the acidification of lakes in Europe and North America in 1950...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 2015
AAPG Bulletin (2015) 99 (11): 2005–2022.
... and Meinchein ( 1979 ) proposed that phytoplankton is the dominant source of C 27 sterols whereas the dominant source of C 29 sterols is related to higher plants. Consequently, the distribution of C 27 , C 28 , and C 29 steranes on a ternary diagram could...
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Journal Article
Journal: Geology
Published: 01 June 2013
Geology (2013) 41 (6): 631–634.
...Caroline E. Sogot; Elizabeth M. Harper; Paul D. Taylor Abstract The hypothesized collapse in primary productivity associated with the Cretaceous-Paleogene (K-Pg) mass extinction would have been particularly severe on suspension feeders dependent on phytoplankton. Previous research on the ecological...
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Journal Article
Journal: Geology
Published: 01 February 2013
Geology (2013) 41 (2): 123–126.
... lead to exceptional fossil and biomarker preservation. The carbonate concretion contained phytoplankton, green sulfur bacteria (Chlorobi), and sulfate-reducing bacteria biomarkers with an increasing concentration toward the nucleus where the fossil is preserved. The spatial distribution of cholestane...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2012
GSA Bulletin (2012) 124 (9-10): 1424–1448.
... with intensified anoxia and possible changes in phytoplankton community composition in the study section. Marine environmental deterioration in the Sverdrup Basin, probably triggered by terrestrial ecosystem deterioration and elevated detrital sediment fluxes, was under way by the early part of the late...
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