Results 331 to 340 of about 228,585 (362)
Is there a decline in marine phytoplankton? [PDF]
Nature, 2011 Phytoplankton account for approximately 50% of global primary production, form the trophic base of nearly all marine ecosystems, are fundamental in trophic energy transfer and have key roles in climate regulation, carbon sequestration and oxygen production.
McQuatters-Gollop, A. +13 more
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Dynamics of a nutrient-phytoplankton model with random phytoplankton mortality
Journal of Theoretical Biology, 2020This study formulates a stochastic nutrient-phytoplankton model which incorporates the effect of white noise on phytoplankton growth. The global existence and uniqueness of a positive solution, stochastic boundedness, and stochastically asymptotic stability are well explored.
Da Song, Meng Fan, Shihan Yan, Meng Liu
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Ecological Research, 2008
AbstractBecause phytoplankton live at the interface between the abiotic and the biotic compartments of ecosystems, they play an important role in coupling multiple nutrient cycles. The quantitative details of how these multiple nutrient cycles intersect is determined by phytoplankton stoichiometry.
Klausmeier, C. +3 more
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AbstractBecause phytoplankton live at the interface between the abiotic and the biotic compartments of ecosystems, they play an important role in coupling multiple nutrient cycles. The quantitative details of how these multiple nutrient cycles intersect is determined by phytoplankton stoichiometry.
Klausmeier, C. +3 more
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Flow cytometry and phytoplankton [PDF]
Cytometry, 1989 AbstractFlow cytometry and sorting are now an important technology in aquatic research. Simultaneous measurements of individual particle cell size, fluorescence, and light scatter properties are directly applicable to current topics in aquatic research. Flow sorting may be employed to obtain subsets of cells for analysis by conventional methods.
D. A. Phinney, Terry L. Cucci
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Annual Review of Marine Science, 2020
Photosynthesis evolved in the ocean more than 2 billion years ago and is now performed by a wide range of evolutionarily distinct organisms, including both prokaryotes and eukaryotes. Our appreciation of their abundance, distributions, and contributions to primary production in the ocean has been increasing since they were first discovered in the ...
Pierella Karlusich, Juan José +2 more
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Photosynthesis evolved in the ocean more than 2 billion years ago and is now performed by a wide range of evolutionarily distinct organisms, including both prokaryotes and eukaryotes. Our appreciation of their abundance, distributions, and contributions to primary production in the ocean has been increasing since they were first discovered in the ...
Pierella Karlusich, Juan José +2 more
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Science, 2008
How are phytoplankton at coastal sites around the world responding to ongoing global change?
James E. Cloern, Victor Smetacek
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How are phytoplankton at coastal sites around the world responding to ongoing global change?
James E. Cloern, Victor Smetacek
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Phytoplankton in Sardinian reservoirs
Giornale botanico italiano, 1996Abstract A picture of the studies carried out in the past 20 years on phytoplankton from the 36 reservoirs and one natural lake in Sardinia is presented. Processing of the 1994 seasonal data shows that the dominant or subdominant algal species in the 36 reservoirs in terms of density belong to only 8 genera, with species of the genus Microcystis in 17 ...
SECHI, Nicola +1 more
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Toxicity of Mercury to Phytoplankton
Nature, 1972MERCURY in the environment has been a recent topic of discussion1–4. According to Hammond2 there are no quantitative measurements of the movement of mercury through the environment. The standards for mercury levels (5 µg l.−1 for drinking water, 0.5 p.p.m. for consumable fish) which have been adopted in the United States are based on toxicity to humans
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On advection in phytoplankton models
Journal of Theoretical Biology, 1973Abstract Scale analysis is used to deduce a new non-dimensional number, S = C [(A H τ) 1 2 V m ] which defines the importance of advection of phytoplankton by organized fluid motion in spatial models of marine food chains. When S ⪢ 1, advection greatly affects biological productivity; when S ⪡ I, advection may be neglected ...
James J. O'Brien, J. S. Wroblewski
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Drivers of phytoplankton blooms
Science, 2016Plankton Dynamics Despite decades of study, there is little evidence to link increases in phytoplankton growth in response to springtime warming with the dynamics of phytoplankton blooms. This lack of understanding makes it difficult to make predictions about global biogeochemical cycling in response to climate change. Hunter-Cevera et al.
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