3 documents found, page 1 of 1
Dimethyl sulfide in the Amazon rain forest
Jardine, Kolby J.; Yáñez-Serrano, Ana Maria; Williams, Jonathan C.; Kunert, Norbert; Jardine, Angela B.; Taylor, Tyeen C.; Abrell, Leif; Artaxo, PauloSurface-to-atmosphere emissions of dimethyl sulfide (DMS) may impact global climate through the formation of gaseous sulfuric acid, which can yield secondary sulfate aerosols and contribute to new particle formation. While oceans are generally considered the dominant sources of DMS, a shortage of ecosystem observations prevents an accurate analysis of terrestrial DMS sources. Using mass spectrometry, we quantif...
Dynamic balancing of isoprene carbon sources reflects photosynthetic and photor...
Jardine, Kolby J.; Chambers, Jeffrey Quintin; Alves, Eliane Gomes; Teixeira, Andrea; Garcia, Sabrina; Holm, Jennifer A.; Higuchi, NiroThe volatile gas isoprene is emitted in teragrams per annum quantities from the terrestrial biosphere and exerts a large effect on atmospheric chemistry. Isoprene is made primarily from recently fixed photosynthate; however, alternate carbon sources play an important role, particularly when photosynthate is limiting. We examined the relative contribution of these alternate carbon sources under changes in light ...
Emissions of putative isoprene oxidation products from mango branches under abi...
Jardine, Kolby J.; Meyers, Kimberly T.; Abrell, Leif; Alves, Eliane Gomes; Yáñez-Serrano, Ana Maria; Kesselmeier, Jürgen; Karl, Thomas G.Although several per cent of net carbon assimilation can be re-released as isoprene emissions to the atmosphere by many tropical plants, much uncertainty remains regarding its biological significance. In a previous study, we detected emissions of isoprene and its oxidation products methyl vinyl ketone (MVK) and methacrolein (MACR) from tropical plants under high temperature/light stress, suggesting that isopren...