Results 31 to 40 of about 1,008,339 (282)

Seasonal dynamics of carbonate chemistry, nutrients and CO2 uptake in a sub-Arctic fjord

open access: yesElementa: Science of the Anthropocene, 2020
Environmental change can have a significant impact on biogeochemical cycles at high latitudes and be particularly important in ecologically valuable fjord ecosystems.
Elizabeth M. Jones   +5 more
doaj   +1 more source

Net community production and gross primary production rates in the western equatorial Pacific [PDF]

open access: yesGlobal Biogeochemical Cycles, 2010
Net community production (NCP) and gross primary production (GPP) are two key metrics for quantifying the biological carbon cycle. In this study, we present a detailed characterization of NCP and GPP in the western equatorial Pacific during August and September 2006.
Stanley, Rachel H. R.   +4 more
openaire   +2 more sources

Net Community Production, Dissolved Organic Carbon Accumulation, and Vertical Export in the Western North Atlantic

open access: yesFrontiers in Marine Science, 2020
The annual North Atlantic phytoplankton bloom represents a hot spot of biological activity during which a significant fraction of net community production (NCP) can be partitioned into dissolved organic carbon (DOC).
Nicholas Baetge   +3 more
doaj   +1 more source

Net community production in the northwestern Mediterranean Sea from glider and buoy measurements [PDF]

open access: yesOcean Science, 2022
The Mediterranean Sea comprises just 0.8 % of the global oceanic surface, yet considering its size, it is regarded as a disproportionately large sink for anthropogenic carbon due to its physical and biogeochemical characteristics.
M. P. Hemming   +10 more
doaj   +1 more source

Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean [PDF]

open access: yesRemote Sensing of Environment, 2015
There is ongoing debate as to whether the oligotrophic ocean is predominantly net autotrophic and acts as a CO2 sink, or net heterotrophic and therefore acts as a CO2 source to the atmosphere. This quantification is challenging, both spatially and temporally, due to the sparseness of measurements.
Tilstone, Gavin H.   +8 more
openaire   +4 more sources

Review of algorithms estimating export production from satellite derived properties

open access: yesFrontiers in Marine Science, 2023
Whereas the vertical transport of biomass from productive surface waters to the deep ocean (the biological pump) is a critical component of the global carbon cycle, its magnitude and variability is poorly understood.
Bror F. Jönsson   +4 more
doaj   +1 more source

Net Community Production in a Productive Coastal Ocean From an Autonomous Buoyancy‐Driven Glider [PDF]

open access: yesJournal of Geophysical Research: Oceans, 2019
AbstractNet community production (NCP), an analog of carbon export out of the surface ocean, is often estimated using budgets of dissolved oxygen. Accurate estimates of oxygen‐based NCP, especially in dynamic coastal regions, require constraints on vertical transport of water with O2 out of equilibrium with the atmosphere, nonsteady state change in the
W. Z. Haskell   +7 more
openaire   +2 more sources

Effects of elevated CO2 and nutrients on the community metabolism of a Cymodocea nodosa bed [PDF]

open access: yes, 2016
We assessed the combined effects of elevated CO2 and nutrients on the metabolism of a benthic community dominated by the seagrass Cymodocea nodosa (Ucria) Ascherson in a mesocosm experiment. C. nodosa plants and their associated community were exposed to
Alexandre, Ana   +3 more
core   +1 more source

Net community production and hypolimnetic nutrient regeneration in a Michigan lake1 [PDF]

open access: yesLimnology and Oceanography, 1986
Net community oxygen production in Third Sister Lake, Michigan, was calculated from concentration gradients, eddy diffusion, and gas flux at the lake surface. The trophogenic zone extended on average to 4.5 m from April to August. Vertical flux of dissolved P provided negligible support for the productivity during this time. Stoichiometries for biomass
John T. Lehman, Trajče Naumoski
openaire   +1 more source

Nematodes enhance plant growth and nutrient uptake under C and N-rich conditions [PDF]

open access: yes, 2016
The role of soil fauna in crucial ecosystem services such as nutrient cycling remains poorly quantified, mainly because of the overly reductionistic approach adopted in most experimental studies.
Bert, Wim   +4 more
core   +1 more source

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