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phytoplankton

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Journal Article
Journal: Geology
Published: 17 January 2020
Geology (2020) 48 (4): 328–332.
... with a near-global loss of vegetation ( Kring, 2007 ; Vajda and Bercovici, 2014 ; Brugger et al., 2017 ). A collapse in phytoplankton productivity in the world’s oceans ( Hsü et al., 1982 ; Zachos and Arthur, 1986 ; Sepúlveda et al., 2009 ) occurred due to the sudden decline in photosynthesis...
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Series: GSA Special Papers
Published: 31 December 2019
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...
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.
... in biogeochemical cycles. Several articles on trace elements in the oceans in this issue of Elements expose these intriguing 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...
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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.
... phosphorus limitation during 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...
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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
Journal: AAPG Bulletin
Published: 01 November 2015
AAPG Bulletin (2015) 99 (11): 2005–2022.
... environment within the basin. Huang 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...
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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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Journal Article
Journal: Palynology
Published: 01 June 2011
Palynology (2011) 35 (1): 103–145.
... morphologically. Based on acritarch records from the Baltica palaeocontinent, of which the Lükati Formation assemblage is a part, and the global PhytoPal Taxonomic Database (PhytoPal Project, Leverhulme Trust, Leicester University, 2003–2006), the early Cambrian diversification of phytoplankton is reviewed...
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Journal Article
Journal: Palynology
Published: 01 December 2010
Palynology (2010) 34 (2): 164–179.
...David M. Jarzen; Curtis Klug Abstract A small but diverse assemblage of pollen, spores and marine phytoplankton recovered from a single, lignitic clay sample of the lower to middle Eocene strata from a deep injection well on Pine Island, Florida represents the oldest land flora described from...
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Journal Article
Journal: Geology
Published: 01 December 2010
Geology (2010) 38 (12): 1103–1106.
... into the sea either directly or across seasonal sea ice, as happens today on the McMurdo Ice Shelf, Antarctica. Falling through the water column, this material likely stimulated production of phytoplankton, which then sank as sediment-loaded aggregates. In marked sedimentary partitioning, these silt...
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Journal Article
Published: 01 September 2010
Journal of the Geological Society (2010) 167 (5): 847–856.
... as the result of increased runoff. With the onset of warmer–drier ‘summer' conditions carbonate was precipitated and phytoplankton produced organic laminae. The thicknesses of the varves can be used as a proxy for climatic conditions. Time-series analysis was performed on measurements from extended sections...
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Journal Article
Journal: Elements
Published: 01 August 2010
Elements (2010) 6 (4): 247–252.
... 3 is one of the many pathways for sulfate formation. However, a notable lack of knowledge about the interaction with other oxidants is apparent, and this is an area in need of further research. © 2010 by the Mineralogical Society of America 2010 mineral dust phytoplankton climate...
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Journal Article
Journal: Geology
Published: 01 October 2009
Geology (2009) 37 (10): 871–874.
...Johan Etourneau; Philippe Martinez; Thomas Blanz; Ralph Schneider Abstract In this study we present combined high-resolution records of sea surface temperature (SST), phytoplankton productivity, and nutrient cycling in the Benguela Upwelling System (BUS) for the past 3.5 Ma. The SST record provided...
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