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Title: Multidecadal shifts in forest plant diversity and community composition across glacial landforms in northern lower Michigan, USA

Journal Article · · Canadian Journal of Forest Research
 [1];  [2];  [1]
  1. Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, 318 W. 12th Avenue, Columbus, OH 43210-1293, USA.
  2. The Nature Conservancy, 101 E. César E. Chávez Avenue, Lansing, MI 48906, USA.

Understanding how plant community assemblage is affected by spatial and temporal patterns is crucial to understanding forest ecosystem responses to disturbance, including future climate change. In this article, we tracked how diversity and composition are distributed through space and time in a midsuccessional mixed hardwood forest in northern lower Michigan, United States. This region’s geographically and abiotically distinct glacial landforms influence both the spatial and temporal dynamics of its forest communities. Vegetation sampling plots (n = 87) were established at the University of Michigan Biological Station in 1990 and resampled in 2015. Vegetation in the overstory, sapling, and groundcover layers was censused. Abiotic variables, including elevation, pH, and soil nutrients, were measured in a subset of plots (n = 40). There were strong differences in diversity and community composition among glacial landforms, with the moraine having a 31% greater species richness in the groundcover layer compared with those of the other glacial landforms. Surprisingly, plant communities across all three vegetation layers showed little change over the 25-year period, and we found no evidence of differences in successional rates among glacial landforms. Our findings indicate that glacial landforms have a large influence on the production and maintenance of local plant diversity and community composition in this area and suggest that successional dynamics may manifest themselves over much longer time periods in these northern biomes.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
SC0006708
OSTI ID:
1801716
Journal Information:
Canadian Journal of Forest Research, Vol. 50, Issue 2; ISSN 0045-5067
Publisher:
Canadian Science Publishing
Country of Publication:
United States
Language:
English

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