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Incorporation of nitrogen from N2fixation into amino acids of zooplankton
Incorporation nitrogen N2fixation amino acids zooplankton
2014/4/2
Eurytemora affinis(Copepoda) were fed 15N-labeledRhodomonas salina(Cryptophyta) or 15N-labeled Nodularia spumigena(Cyanobacteria) in excess under controlled laboratory conditions. Zooplankton collecte...
High concentrations of mycosporine-like amino acids and colored dissolved organic matter in the sea surface microlayer off the Iberian Peninsula
High concentrations of mycosporine-like amino acids colored dissolved organic matter the sea surface microlayer off Iberian Peninsula
2014/4/16
Mycosporine-like amino acids (MAAs), phytoplankton pigments, and inherent optical properties were analyzed in sea surface microlayer (SSM), near-surface (0–2 m), and subsurface (0–110 m) samples from ...
Photoprotection mechanisms against ultraviolet radiation in Heterocapsa sp. (Dinophyceae) are influenced by nitrogen availability: Mycosporine-like amino acids vs. xanthophyll cycle
Heterocapsa sp Photoprotection mechanisms
2014/4/16
The photoprotective and acclimation capacity against ultraviolet radiation (UVR) was assessed for the
dinoflagellate Heterocapsa sp. We examined the effect of UVR and N availability on photosynthetic...
Contribution of mycosporine-like amino acids and colored dissolved and particulate matter to sea ice optical properties and ultraviolet attenuation
amino acids colored dissolved
2014/4/16
In the Baltic Sea ice, the spectral absorption coefficients for particulate matter (PM) were about two times
higher at ultraviolet wavelengths than at photosynthetically available radiation (PAR) wav...
Seasonal and ontogenetic changes of mycosporine-like amino acids in planktonic organisms from an alpine lake
Seasonal and ontogenetic changes mycosporine-like amino acids planktonic organisms an alpine lake
2014/5/4
We studied the quantitative and qualitative mycosporine-like amino acid (MAA) composition in phytoplankton and the copepod Cyclops abyssorum tatricus from an alpine lake over a 15-month period. Up to ...
Archaeal uptake of enantiomeric amino acids in the meso- and bathypelagic waters of the North Atlantic
enantiomeric amino acids meso- and bathypelagic waters
2014/4/23
We determined the contribution of the three major prokaryotic groups (Bacteria, Crenarchaeota, and Euryarchaeota) on the uptake of D- and L-aspartic acid (Asp) in the major water masses of the North A...
Dietary acquisition of photoprotective compounds (mycosporine-like amino acids, carotenoids) and acclimation to ulraviolet radiation in a freshwater copepod
Dietary acquisition of photoprotective compounds acclimation to ultraviolet radiation freshwater copepod
2014/5/9
We experimentally tested the hypothesis that accumulations of dietary compounds such as carotenoids or UVabsorbing mycosporine-like amino acids (MAAs) protect against natural levels of ultraviolet rad...
Enrichment of amino acids in the sea surface microlayer at coastal and open ocean sites in the North Atlantic Ocean
amino acids sea surface microlayer
2014/5/19
We investigated how regional differences in environmental parameters influenced enrichment of amino acids in
the sea surface microlayer relative to underlying bulk seawater. Concentrations and ...
The continuity and intensity of ultraviolet irradiation affect the kinetics of biosynthesis, accumulation, and conversion of mycosporine-like amino acids (MAAs) in the coral Stylophora pistillata
continuity and intensity ultraviolet irradiation accumulation conversion mycosporine-like amino acids coral Stylophora pistillata
2014/5/14
Colonies of Stylophora pistillata unexposed to ultraviolet radiation (UVR) in laboratory aquaria contained minimal amounts of mycosporine-like amino acids (MAAs). The concentration of MAAs increased r...
Major shift in bacterioplankton utilization of enantiomeric amino acids between surface waters and the ocean's interior
Major shift in bacterioplankton utilization of enantiomeric amino acids between surface waters and the ocean's interior
2014/5/20
The peptidoglycan layer of the bacterioplankton cell wall contains four major amino acids (alanine, Ala; serine, Ser; aspartic acid, Asp; and glutamic acid, Glu) in a characteristic enantiomeric ratio...
Preservation of amino acids from in situ–produced bacterial cell wall peptidoglycans in northeastern Atlantic continental margin sediments
amino acids from in situ bacterial cell wall peptidoglycan northeastern Atlantic continental margin sediments
2014/5/26
In this study we present the results of total hydrolysable amino acids (THAA) and amino acid D/L-enantiomers in northeastern Atlantic continental margin sediments. There is increasing evidence that in...
Large variability in the concentration of mycosporine-like amino acids among zooplankton from lakes located across an altitude gradient
Large variability in the concentration mycosporine-like amino acids located across an altitude gradient
2014/6/9
The qualitative and quantitative composition of mycosporine-like amino acids (MAAs), a family of intracellular UV-absorbing compounds, were investigated in zooplankton from 15 lakes located in the Cen...
Sorptive fractionation of dissolved organic nitrogen and amino acids onto fine sediments within the Amazon Basin
dissolved organic nitrogen amino acids
2014/5/30
A consistent observation of river waters in the Amazon Basin and elsewhere is that suspended fine particulate
organic matter (FPOM) is compositionally distinct from coexisting dissolved organic...
Sources and sinks of dissolved free amino acids and protein in a large and deep mesotrophic lake
Sources and sinks dissolved free amino acids protein in a large deep mesotrophic lake
2014/6/9
We studied the microbial cycling of dissolved free amino acids (DFAAs) and protein in mesotrophic Lake Constance, Germany, by examining their release by phytoplankton and various heterotrophic organis...
Reworking of amino acid in marine sediments: Stable carbon isotopic composition of amino acids in sediments along the Washington coast
Reworking of amino acid in marine sediments Stable carbon isotopic composition of amino acids sediments along the Washington coast
2014/5/30
The stable carbon isotopic composition of nine individual amino acids were investigated in phytoplankton and zooplankton, estuarine plankton, terrigenous material, marine fecal material, and clay mine...