Winter climate change affects growing-season soil microbial biomass and activity in northern hardwood forests

Jorge Durán, Jennifer L. Morse, Peter M. Groffman, John L. Campbell, Lynn M. Christenson, Charles T Driscoll, Timothy J. Fahey, Melany C. Fisk, Myron J. Mitchell, Pamela H. Templer

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Understanding the responses of terrestrial ecosystems to global change remains a major challenge of ecological research. We exploited a natural elevation gradient in a northern hardwood forest to determine how reductions in snow accumulation, expected with climate change, directly affect dynamics of soil winter frost, and indirectly soil microbial biomass and activity during the growing season. Soils from lower elevation plots, which accumulated less snow and experienced more soil temperature variability during the winter (and likely more freeze/thaw events), had less extractable inorganic nitrogen (N), lower rates of microbial N production via potential net N mineralization and nitrification, and higher potential microbial respiration during the growing season. Potential nitrate production rates during the growing season were particularly sensitive to changes in winter snow pack accumulation and winter soil temperature variability, especially in spring. Effects of elevation and winter conditions on N transformation rates differed from those on potential microbial respiration, suggesting that N-related processes might respond differently to winter climate change in northern hardwood forests than C-related processes.

Original languageEnglish (US)
Pages (from-to)3568-3577
Number of pages10
JournalGlobal Change Biology
Volume20
Issue number11
DOIs
StatePublished - Nov 1 2014

Fingerprint

Hardwoods
Climate change
Biomass
growing season
Soils
Snow
climate change
winter
biomass
soil
soil temperature
respiration
snow
Nitrification
snow accumulation
Nitrates
Ecosystems
inorganic nitrogen
terrestrial ecosystem
frost

Keywords

  • Carbon
  • Global change
  • Microbial respiration
  • Mineralization
  • Nitrification
  • Nitrogen
  • Soil frost

ASJC Scopus subject areas

  • Ecology
  • Global and Planetary Change
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Durán, J., Morse, J. L., Groffman, P. M., Campbell, J. L., Christenson, L. M., Driscoll, C. T., ... Templer, P. H. (2014). Winter climate change affects growing-season soil microbial biomass and activity in northern hardwood forests. Global Change Biology, 20(11), 3568-3577. https://doi.org/10.1111/gcb.12624

Winter climate change affects growing-season soil microbial biomass and activity in northern hardwood forests. / Durán, Jorge; Morse, Jennifer L.; Groffman, Peter M.; Campbell, John L.; Christenson, Lynn M.; Driscoll, Charles T; Fahey, Timothy J.; Fisk, Melany C.; Mitchell, Myron J.; Templer, Pamela H.

In: Global Change Biology, Vol. 20, No. 11, 01.11.2014, p. 3568-3577.

Research output: Contribution to journalArticle

Durán, J, Morse, JL, Groffman, PM, Campbell, JL, Christenson, LM, Driscoll, CT, Fahey, TJ, Fisk, MC, Mitchell, MJ & Templer, PH 2014, 'Winter climate change affects growing-season soil microbial biomass and activity in northern hardwood forests', Global Change Biology, vol. 20, no. 11, pp. 3568-3577. https://doi.org/10.1111/gcb.12624
Durán, Jorge ; Morse, Jennifer L. ; Groffman, Peter M. ; Campbell, John L. ; Christenson, Lynn M. ; Driscoll, Charles T ; Fahey, Timothy J. ; Fisk, Melany C. ; Mitchell, Myron J. ; Templer, Pamela H. / Winter climate change affects growing-season soil microbial biomass and activity in northern hardwood forests. In: Global Change Biology. 2014 ; Vol. 20, No. 11. pp. 3568-3577.
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