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Natural isotopic composition of carbon (d13 C) correlates with colony size in the planktonic cyanobacterium Gloeotrichia echinulata
Natural isotopic colony size
2014/4/18
To assess variability in carbon isotope signatures (d13
C) between and within populations under natural
conditions, with a particular emphasis on colony size, we repeatedly collected planktonic colo...
Photodegradation of the algal toxin domoic acid in natural water matrices
he algal toxin domoic acid natural water matrices
2014/4/23
We investigated the photodegradation rate of the powerful marine toxin domoic acid in a variety of natural water
matrices. The observed first-order photodegradation rate coefficient (kobs...
Effects of ultraviolet-B radiation and vertical mixing on nitrogen uptake by a natural planktonic community shifting from nitrate to silicic acid deficiency
ltraviolet-B radiation vertical mixing
2014/5/20
We investigated the combined effects of mixing regimes and ultraviolet-B radiation (UVBR: 280–320 nm) on
the uptake of nitrate, ammonium, and urea by an estuarine phytoplankton community during a 10-...
Natural variability of carbon dioxide and net epilimnetic production in the surface waters of boreal lakes of different sizes
carbon dioxide net epilimnetic production
2014/6/9
The variability of surface water carbon dioxide concentration, or partial pressure (pCO2
), was studied in 11 lakes
of greatly varying size (2.4 ha up to 8 million ha) in Northwest Ontario, Canada. ...
Production and neutral aldose composition of dissolved carbohydrates excreted by natural marine phytoplankton populations
Production neutral aldose composition
2014/5/30
Natural populations of diatoms were incubated for 4–12 h with H13
CO3
21
. The production of particulate and
dissolved fractions of organic carbon and neutral aldoses (NAld) was followed by gas ch...
Bioavailability of natural colloid-bound iron to marine plankton: Influences of colloidal size and aging
natural colloid-bound iron marine plankton
2014/5/30
Iron (Fe) is mostly complexed with the organic ligands or colloids that are very abundant in natural seawater. In
this study, natural colloids were isolated by ultrafiltration and radiolabeled ...
Growth rates of large and small Southern Ocean diatoms in relation to availability of iron in natural seawater
Growth rates of large small Southern Ocean
2014/5/30
Blooms of large diatoms dominate the CO2
drawdown and silicon cycle of the Southern Ocean in both the past
and present. The growth of these Antarctic diatoms is limited by availability of iron (and ...