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Climate warming accelerates temporal scaling of grassland soil microbial biodiversity

Journal Article · · Nature Ecology and Evolution
 [1];  [2];  [3];  [4];  [5];  [5];  [5];  [5];  [5];  [6];  [6];  [5];  [5];  [5];  [5];  [5];  [5];  [7];  [7];  [8] more »;  [9];  [10];  [11] « less
  1. Central South Univ., Changsha (China); Univ. of Oklahoma, Norman, OK (United States); Tsinghua Univ., Beijing (China)
  2. Central South Univ., Changsha (China); Univ. of Oklahoma, Norman, OK (United States)
  3. Univ. of Oklahoma, Norman, OK (United States); Waste Management Research Unit, Parlier, CA (United States)
  4. Univ. of Oklahoma, Norman, OK (United States); Univ. of California, Berkeley, CA (United States)
  5. Univ. of Oklahoma, Norman, OK (United States)
  6. Univ. of Oklahoma, Norman, OK (United States); Tsinghua Univ., Beijing (China)
  7. Central South Univ., Changsha (China)
  8. Univ. of Oklahoma, Norman, OK (United States); Northern Arizona Univ., Flagstaff, AZ (United States); Tsinghua Univ., Beijing (China)
  9. Michigan State Univ., East Lansing, MI (United States)
  10. Tsinghua Univ., Beijing (China)
  11. Univ. of Oklahoma, Norman, OK (United States); Tsinghua Univ., Beijing (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Determining the temporal scaling of biodiversity, typically described as species-time relationships (STRs), in the face of global climate change is a central issue in ecology because it is fundamental to biodiversity preservation and ecosystem management. However, whether and how climate change affects microbial STRs remains unclear, mainly due to the scarcity of long-term experimental data. Here, we examine the STRs and phylogenetic-time relationships (PTRs) of soil bacteria and fungi in a long-term multifactorial global change experiment with warming (+3 °C), half precipitation (-50%), double precipitation (+100%) and clipping (annual plant biomass removal). Soil bacteria and fungi all exhibited strong STRs and PTRs across the 12 experimental conditions. Strikingly, warming accelerated the bacterial and fungal STR and PTR exponents (that is, the w values), yielding significantly (P < 0.001) higher temporal scaling rates. While the STRs and PTRs were significantly shifted by altered precipitation, clipping and their combinations, warming played the predominant role. In addition, comparison with the previous literature revealed that soil bacteria and fungi had considerably higher overall temporal scaling rates (w = 0.39-0.64) than those of plants and animals (w = 0.21-0.38). As a result, our results on warming-enhanced temporal scaling of microbial biodiversity suggest that the strategies of soil biodiversity preservation and ecosystem management may need to be adjusted in a warmer world.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231; SC0004601; SC0010715
OSTI ID:
1577333
Journal Information:
Nature Ecology and Evolution, Journal Name: Nature Ecology and Evolution Journal Issue: 4 Vol. 3; ISSN 2397-334X
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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