Now showing items 21-30 of 941
Consequences of considering carbon–nitrogen interactions on the feedbacks between climate and the terrestrial carbon cycle
(American Meteorological Society, 2008-08-01)
The impact of carbon–nitrogen dynamics in terrestrial ecosystems on the interaction between the carbon cycle and climate is studied using an earth system model of intermediate complexity, the MIT Integrated Global Systems ...
(American Meteorological Society, 2010-04-15)
Corrigendum: Sokolov, A., and Coauthors, 2009: Probabilistic forecast for twenty-first-century climate based on uncertainties in emissions (without policy) and climate parameters. J. Climate, 22, 5175–5204.
Terrestrial C sequestration at elevated CO2 and temperature : the role of dissolved organic N loss
We used a simple model of carbon–nitrogen (C–N) interactions in terrestrial ecosystems to examine the responses to elevated CO2 and to elevated CO2 plus warming in ecosystems that had the same total nitrogen loss but that ...
Biogeography of bacterioplankton in lakes and streams of an arctic tundra catchment
(Ecological Society of America, 2007-06)
Bacterioplankton community composition was compared across 10 lakes and 14 streams within the catchment of Toolik Lake, a tundra lake in Arctic Alaska, during seven surveys conducted over three years using denaturing ...
A revised evolutionary history of the CYP1A subfamily : gene duplication, gene conversion, and positive selection
Members of cytochrome P450 subfamily 1A (CYP1As) are involved in detoxification and bioactivation of common environmental pollutants. Understanding the functional evolution of these genes is essential to predicting and ...
Laser microsurgery in the GFP era : a cell biologist's perspective
Modern biology is based largely on a reductionistic ‘dissection’ approach – most cell biologists try to determine how complex biological systems work by removing their individual parts and studying the effects of this ...
Identification of DeltaN isoform and polyadenylation site choice variants in molluscan p63/p73 -like homologues
The p53 family of transcription factors has been implicated in many vertebrate cancers. Altered p53 and p73 protein expression observed in leukemic cells of mollusks suggests that these transcription factors might be ...
Climate and species affect fine root production with long-term fertilization in acidic tussock tundra near Toolik Lake, Alaska
Long-term fertilization of acidic tussock tundra has led to changes in plant species composition, increases in aboveground production and biomass and substantial losses of soil organic carbon (SOC). Root litter is an ...
Characterisation of the subtelomeric regions of Giardia lamblia genome isolate WBC6
Giardia trophozoites are polyploid and have five chromosomes. The chromosome homologues demonstrate considerable size heterogeneity due to variation in the subtelomeric regions. We used clones from the genome project with ...
Long-term biological effects of petroleum residues on fiddler crabs in salt marshes
In September 1969,the Florida barge spilled 700,000 L of No. 2 fuel oil into the salt marsh sediments of Wild Harbor (Buzzards Bay, MA). Today the aboveground environment appears unaffected, but a substantial amount of ...