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Title: Modeling forest carbon cycle response to tree mortality: Effects of plant functional type and disturbance intensity

Journal Article · · Journal of Geophysical Research. Biogeosciences
DOI:https://doi.org/10.1002/2015JG003035· OSTI ID:1418509
 [1];  [1];  [2];  [1];  [1];  [3];  [4];  [1];  [5]
  1. The Ohio State Univ., Columbus, OH (United States). Dept. of Civil, Environmental, and Geodetic Engineering
  2. Princeton Univ., NJ (United States). Dept. of Geosciences
  3. Univ. of Michigan Biological Station, Pellston, MI (United States)
  4. Virginia Commonwealth Univ., Richmond, VA (United States). Dept. of Biology
  5. The Ohio State Univ., Columbus, OH (United States). Dept. of Evolution, Ecology, and Organismal Biology
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Natural and anthropogenic disturbances influence ecological succession and impact the carbon cycle. Understanding disturbance effects and ecosystem recovery is essential to carbon modeling. Here, we hypothesized that (1) species-specific disturbances impact the carbon cycle differently from nonspecific disturbances. In particular, disturbances that target early-successional species will lead to higher carbon uptake by the postrecovery, middle- and late-successional community and (2) disturbances that affect the midsuccessional deciduous species have more intense and long-lasting impacts on carbon uptake than disturbances of similar intensity that only affect the early-successional species. To test these hypotheses, we employed a series of simulations conducted with the Ecosystem Demography model version 2 to evaluate the sensitivity of a temperate mixed-deciduous forest to disturbance intensity and type. Our simulation scenarios included a control (undisturbed) case, a uniform disturbance case where we removed 30% of all trees regardless of their successional status, five cases where only early-successional deciduous trees were removed with increasing disturbance intensity (30%, 70%, 85%, and 100%), and four cases of midsuccessional disturbances with increasing intensity (70%, 85%, and 100%). Our results indicate that disturbances affecting the midsuccessional deciduous trees led to larger decreases in carbon uptake as well as longer recovery times when compared to disturbances that exclusively targeted the early-successional deciduous trees at comparable intensities. Moreover, disturbances affecting 30% to 100% of early-successional deciduous trees resulted in an increased carbon uptake, beginning 6 years after the disturbance and sustained through the end of the 100 year simulation.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF)
Grant/Contract Number:
SC0006708; SC0007041; 1521238
OSTI ID:
1418509
Journal Information:
Journal of Geophysical Research. Biogeosciences, Vol. 120, Issue 11; ISSN 2169-8953
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Cited By (2)

The Sensitivity of North American Terrestrial Carbon Fluxes to Spatial and Temporal Variation in Soil Moisture: An Analysis Using Radar‐Derived Estimates of Root‐Zone Soil Moisture journal November 2019
Inferring forest fate from demographic data: from vital rates to population dynamic models journal March 2018

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Related Subjects

59 BASIC BIOLOGICAL SCIENCES
54 ENVIRONMENTAL SCIENCES
carbon flux
disturbance
numerical simulation
eddy covariance measurements
ED model
mortality