Results 21 to 30 of about 15,788 (242)
Constant release of photosynthate from marine phytoplankton [PDF]
Applied and Environmental Microbiology, 1976 The release rate of dissolved organic carbon (DOC) by unialgal cultures and natural phytoplankton assemblages was constant over a wide range of dissolved inorganic carbon concentrations. DOC release was not proportional to the particulate organic carbon production rate. We postulate that intracellular DOC, fated for release, exists either as a separate
D F, Smith, W J, Wiebe
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Diatom fucan polysaccharide precipitates carbon during algal blooms
Nature Communications, 2021 The fate of ocean carbon is determined by the balance between primary productivity and heterotrophic breakdown of that photosynthate. Here the authors show that diatoms produce a polysaccharide that resists bacterial degradation, accumulates, aggregates ...
Silvia Vidal-Melgosa +12 more
doaj +1 more source
Interannual, seasonal, and diel variation in soil respiration relative to ecosystem respiration at a wetland to upland slope at Harvard Forest [PDF]
, 2010 Soil carbon dioxide efflux (soil respiration, SR) was measured with eight autochambers at two locations along a wetland to upland slope at Harvard Forest over a 4 year period, 2003–2007.
Bubier, Jill L. +6 more
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Local variance of atmospheric 14C concentrations around Fukushima Dai-ichi Nuclear Power Plant from 2010 to 2012 [PDF]
, 2017 Radiocarbon (14C) has been measured in single tree ring samples collected from the southwest of the Fukushima Dai-ichi Nuclear Power Plant. Our data indicate south-westwards dispersion of radiocarbon and the highest 14C activity observed so far in the ...
Chen, Biying +7 more
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Frontiers in Plant Science, 2019 Appropriate planting density and nitrogen (N) supply are critical factors optimizing yield in crop cultivation. To advance the knowledge of maize plants under different density and N rate combinations, responses of canopy apparent photosynthesis (CAP ...
Shanshan Wei +6 more
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Plants, 2021 Knowledge of the physiological basis for improved genetic adaptation of common bean (Phaseolus vulgaris L.) lines to acid soils and high temperature conditions in the Amazon region of Colombia is limited. In this study, we evaluated the differences among
Juan Carlos Suárez +6 more
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Rapid turnover of hyphae of mycorrhizal fungi determined by AMS microanalysis of C-14 [PDF]
, 2003 Processes in the soil remain among the least well-characterized components of the carbon cycle. Arbuscular mycorrhizal (AM) fungi are ubiquitous root symbionts in many terrestrial ecosystems and account for a large fraction of photosynthate in a wide ...
Fitter, A H +4 more
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Nature Communications, 2022 Land use intensification could make soil food webs less able to recover from drought. Here, the authors find that intensive grassland management impairs recent photosynthate flux to roots and soil biota after drought, whereas extensive grassland ...
Mathilde Chomel +11 more
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Using Stable Isotope Analyses to Assess the Trophic Ecology of Scleractinian Corals
Oceans, 2022 Studies on the trophic ecology of scleractinian corals often include stable isotope analyses of tissue and symbiont carbon and nitrogen. These approaches have provided critical insights into the trophic sources and sinks that are essential to ...
Michael P. Lesser +2 more
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Photosynthate distribution patterns in cherrybark oak seedling sprouts [PDF]
Tree Physiology, 2003 We used 14C tracers to determine photosynthate distribution in cherrybark oak (Quercus pagoda Raf.) seedling sprouts following release from competing mid-story vegetation. Fall acquisition of labeled photosynthates by seedlings followed expected source-sink patterns, with root and basal stem tissues serving as the primary sinks.
Brian Roy, Lockhart +3 more
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