45 Regeneration of Little Ice Age bryophytes emerging from a polar glacier with implications of totipotency in extreme environments.
http://www.pnas.org/content/110/24/9839.abstract
44 Complex history of the amphibian-killing chytrid fungus revealed with genome resequencing data.
http://www.pnas.org/content/110/23/9385.abstract
43 Local extinction of large fruit-eating birds selects for reduction of seed size in a tropical forest palm.
http://www.sciencemag.org/content/340/6136/1086.abstract
42 Millennial-scale isotope records from a wide-ranging predator show evidence of recent human impact to oceanic food webs.
http://www.pnas.org/content/110/22/8972.abstract
41 Camouflage mismatch in seasonal coat color due to decreased snow duration.
http://www.pnas.org/content/110/18/7360.abstract
40 Ferromagnetic Inks Facilitate Large Scale Paper Recycling and Reduce Bleach Chemical Consumption.
http://pubs.acs.org/doi/abs/10.1021/la400165v
39 Turnover of microbial lipids in the deep biosphere and growth of benthic archaeal populations.
http://www.pnas.org/content/110/15/6010.abstract
38 New Trans-Arctic shipping routes navigable by midcentury.
http://www.pnas.org/content/110/13/E1191/1
37 As polar ice retreated in 2012, it left evidence of large algal deposits in its wake.
http://www.sciencemag.org/content/339/6126/1430.abstract
36 Water-controlled wealth of nations.
http://www.pnas.org/content/110/11/4230.abstract
35 Utilizing the algicidal activity of aminoclay as a practical treatment for toxic red tides.
http://www.nature.com/srep/2013/130218/srep01292/full/srep01292.html
34 Up to 32% of the global land area contains ecosystems that are influenced by shallow groundwater.
http://www.sciencemag.org/content/339/6122/940.abstract
33 Biodiversity decreases disease through predictable changes in host community competence.
http://www.nature.com/nature/journal/v494/n7436/full/nature11883.html
32 Anxiolytic drugs, at concentrations found in natural waterways, alter the behavior and foraging rate of wild European perch.
http://www.sciencemag.org/content/339/6121/814.abstract
31 Microbiome of the upper troposphere: Species composition and prevalence, effects of tropical storms, and atmospheric implications.
http://www.pnas.org/content/110/7/2575.abstract
30 Diversity loss with persistent human disturbance increases vulnerability to ecosystem collapse.
http://www.nature.com/nature/journal/v494/n7435/full/nature11869.html
29 Impact of nitrogen deposition at the species level.
http://www.pnas.org/content/110/3/984
28 Record-Breaking Early Flowering in the Eastern United States.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053788
27 How national context, project design, and local community characteristics influence success in community-based conservation projects.
http://www.pnas.org/content/109/52/21265.abstract
26 A new approach to dating a continuous sea-level record, using speleothem U–Th ages, shows that past variations in global ice volume occurred within centuries of polar climate change, with rates of sea-level rise reaching at least 1 metre per century.
http://www.nature.com/nature/journal/v491/n7426/full/nature11593.html
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