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- Kumar, Niraj; Grogan, Paul; Chu, Haiyan; Christiansen, Casper T.; Walker, Virginia K.
- Biology 2013 v.2 no.1 pp. 356-377
- carbon; carbon dioxide; chaos theory; climate change; crystallization; data collection; ecosystems; freeze-thaw cycles; freezing; frigid soils; growing season; ice; lakes; landscapes; latitude; microbial communities; nutrients; permafrost; phospholipid fatty acids; phylotype; prediction; ribosomal RNA; sequence analysis; soil bacteria; soil sampling; thawing; Arctic region
- ... Climate change is already altering the landscape at high latitudes. Permafrost is thawing, the growing season is starting earlier, and, as a result, certain regions in the Arctic may be subjected to an increased incidence of freeze-thaw events. The potential release of carbon and nutrients from soil microbial cells that have been lysed by freeze-thaw transitions could have significant impacts on t ...
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- Yuri, Tamaki; Kimball, Rebecca T.; Harshman, John; Bowie, Rauri C. K.; Braun, Michael J.; Chojnowski, Jena L.; Han, Kin-Lan; Hackett, Shannon J.; Huddleston, Christopher J.; Moore, William S.; Reddy, Sushma; Sheldon, Frederick H.; Steadman, David W.; Witt, Christopher C.; Braun, Edward L.
- Biology 2013 v.2 no.1 pp. 419-444
- birds; data collection; genes; mutation; nucleotide sequences; nucleotides; phylogeny; sequence alignment; statistical analysis
- ... Insertion/deletion (indel) mutations, which are represented by gaps in multiple sequence alignments, have been used to examine phylogenetic hypotheses for some time. However, most analyses combine gap data with the nucleotide sequences in which they are embedded, probably because most phylogenetic datasets include few gap characters. Here, we report analyses of 12,030 gap characters from an alignm ...
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