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phytoplankton

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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...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 20 December 2017
GSA Bulletin (2017) 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...
FIGURES
Series: GSA Special Papers
Published: 01 May 2009
DOI: 10.1130/2009.2450(01)
... of phosphate with CaCO 3 helps to keep productivity low. However, algal growth is colimited by nitrogen availability. Phytoplankton densities are low, with a mean summer chlorophyll a concentration of 0.4 mg L ‒1 . Phytoplankton are dominated by diatoms, but they have not been studied extensively (but see...
Series: SEPM Special Publication
Published: 01 January 2008
DOI: 10.1029/2003JC001938
EISBN: 9781565762244
Journal Article
Journal: Geology
Published: 01 June 2000
Geology (2000) 28 (6): 499-502.
...Anders S. Henriksson; Michael Sarnthein; Geoffrey Eglinton; Jon Poynter Abstract Dimethylsulfide (DMS) released from phytoplankton produces cloud condensation nuclei in the marine troposphere, thereby providing a climate-regulating mechanism by increasing cloud albedo. A 200-k.y.-long sedimentary...
FIGURES
Journal Article
Published: 01 December 1999
Journal of the Geological Society (1999) 156 (6): 1113-1124.
... deposition, (5) irregular alternations (50 cm to 2.5 m) in shale-marl deposition and (6) irregular variation in marine phytoplankton abundance. These are interpreted as: (a) obliquity forcing of marine currents, bottom water oxygenation and organic preservation, (b) precessional forcing of rainfall, position...
Journal Article
Journal: PALAIOS
Published: 01 October 1998
PALAIOS (1998) 13 (5): 439-458.
... phytoplankton assemblages. Most thick, continuous diatomaceous laminae are composed of well-preserved monogeneric and monospecific diatom assemblages that likely experienced biologically induced aggregation and rapid sedimentation without grazing. Thick, discontinuous diatomaceous laminae consist of either...
Journal Article
Journal: Paleobiology
Published: 01 April 1997
Paleobiology (1997) 23 (2): 247-262.
...Nicholas J. Butterfield Abstract Most modern marine ecology is ultimately based on unicellular phytoplankton, yet most large animals are unable to graze directly on even relatively large net phytoplankton; the repackaging effected by herbivorous mesozooplankton thus represents a key link in marine...
Journal Article
Journal: Palynology
Published: 01 October 1995
Palynology (1995) 19 (1): 221-231.
Journal Article
Published: 01 January 1995
Micropaleontology (1995) 41 (1): 89-94.
Journal Article
Published: 01 February 1994
Journal of the Geological Society (1994) 151 (1): 173-194.
...D. M. MARTILL; M. A. TAYLOR; K. L. DUFF; J.B. RIDING; P. R. BOWN Abstract The Peterborough Member of the Oxford Clay Formation is organic-rich and contains an abundance of well-preserved vertebrate and invertebrate fossils. A high nutrient input supported a diverse biota. Phytoplankton...
Journal Article
Published: 01 November 1992
Geological Magazine (1992) 129 (6): 741-752.
Journal Article
Published: 01 January 1992
Geological Magazine (1992) 129 (1): 17-40.
Journal Article
Journal: Geology
Published: 01 November 1986
Geology (1986) 14 (11): 943-946.
...G. Kent Colbath Abstract Study of organic-walled phytoplankton (prasinophytes and “acritarchs”) from samples spanning the Ordovician/Silurian boundary in the southern Appalachians reveals an abrupt change in the composition of phytoplankton associations at the boundary, coincident...
Journal Article
Journal: Palynology
Published: 01 October 1985
Palynology (1985) 9 (1): 133-145.
Journal Article
Published: 01 October 1985
Journal of Foraminiferal Research (1985) 15 (4): 282-301.
Journal Article
Journal: Geology
Published: 01 July 1985
Geology (1985) 13 (7): 521-525.
... tetrahedral tetrads of land-plant spores and phytoplankton (“acritarchs” and prasinophytes) that were recovered from body- and trace-fossil-bearing rocks of the northeastern Paraná Basin. Both the plant spores and phytoplankton indicate an Early Silurian (early Llandoverian) age, and support the previous...
Journal Article
Published: 01 July 1983
Micropaleontology (1983) 29 (3): 267-297.
Journal Article
Journal: Geology
Published: 01 September 1980
Geology (1980) 8 (9): 427-431.
... of several taxa of phytoplankton the ages of which have been accurately estimated from paleomagnetically dated piston cores. The first appearance of nannofossils Amaurolithus primus and A. delicatus at 6.25 m.y. B.P. and the diatoms Thalassiosira praeconvexa and Nitzschia miocenica elongata at 6.10 and 6.00...
Journal Article
Published: 01 January 1980
Micropaleontology (1980) 26 (1): 97-102.