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Title: Novel climates reverse carbon uptake of atmospherically dependent epiphytes: Climatic constraints on the iconic boreal forest lichen Evernia mesomorpha

Abstract

Premise of the Study Changing climates are expected to affect the abundance and distribution of global vegetation, especially plants and lichens with an epiphytic lifestyle and direct exposure to atmospheric variation. The study of epiphytes could improve understanding of biological responses to climatic changes, but only if the conditions that elicit physiological performance changes are clearly defined. Methods We evaluated individual growth performance of the epiphytic lichen Evernia mesomorpha , an iconic boreal forest indicator species, in the first year of a decade‐long experiment featuring whole‐ecosystem warming and drying. Field experimental enclosures were located near the southern edge of the species’ range. Key Results Mean annual biomass growth of Evernia significantly declined 6 percentage points for every +1°C of experimental warming after accounting for interactions with atmospheric drying. Mean annual biomass growth was 14% in ambient treatments, 2% in unheated control treatments, and −9% to −19% (decreases) in energy‐added treatments ranging from +2.25 to +9.00°C above ambient temperatures. Warming‐induced biomass losses among persistent individuals were suggestive evidence of an extinction debt that could precede further local mortality events. Conclusions Changing patterns of warming and drying would decrease or reverse Evernia growth at its southern range margins, with potential consequences formore » the maintenance of local and regional populations. Negative carbon balances among persisting individuals could physiologically commit these epiphytes to local extinction. Our findings illuminate the processes underlying local extinctions of epiphytes and suggest broader consequences for range shrinkage if dispersal and recruitment rates cannot keep pace.« less

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [1]
  1. Oregon State Univ., Corvallis, OR (United States)
  2. Univ. of Maine, Fort Kent, ME (United States)
  3. USDA Forest Service, Portland, OR (United States). Pacific Northwest Research Station
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1424459
Alternate Identifier(s):
OSTI ID: 1422658
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
American Journal of Botany
Additional Journal Information:
Journal Volume: 105; Journal Issue: 2; Journal ID: ISSN 0002-9122
Publisher:
Wiley - Botanical Society of America
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES

Citation Formats

Smith, Robert J., Nelson, Peter R., Jovan, Sarah, Hanson, Paul J., and McCune, Bruce. Novel climates reverse carbon uptake of atmospherically dependent epiphytes: Climatic constraints on the iconic boreal forest lichen Evernia mesomorpha. United States: N. p., 2018. Web. doi:10.1002/ajb2.1022.
Smith, Robert J., Nelson, Peter R., Jovan, Sarah, Hanson, Paul J., & McCune, Bruce. Novel climates reverse carbon uptake of atmospherically dependent epiphytes: Climatic constraints on the iconic boreal forest lichen Evernia mesomorpha. United States. https://doi.org/10.1002/ajb2.1022
Smith, Robert J., Nelson, Peter R., Jovan, Sarah, Hanson, Paul J., and McCune, Bruce. Mon . "Novel climates reverse carbon uptake of atmospherically dependent epiphytes: Climatic constraints on the iconic boreal forest lichen Evernia mesomorpha". United States. https://doi.org/10.1002/ajb2.1022. https://www.osti.gov/servlets/purl/1424459.
@article{osti_1424459,
title = {Novel climates reverse carbon uptake of atmospherically dependent epiphytes: Climatic constraints on the iconic boreal forest lichen Evernia mesomorpha},
author = {Smith, Robert J. and Nelson, Peter R. and Jovan, Sarah and Hanson, Paul J. and McCune, Bruce},
abstractNote = {Premise of the Study Changing climates are expected to affect the abundance and distribution of global vegetation, especially plants and lichens with an epiphytic lifestyle and direct exposure to atmospheric variation. The study of epiphytes could improve understanding of biological responses to climatic changes, but only if the conditions that elicit physiological performance changes are clearly defined. Methods We evaluated individual growth performance of the epiphytic lichen Evernia mesomorpha , an iconic boreal forest indicator species, in the first year of a decade‐long experiment featuring whole‐ecosystem warming and drying. Field experimental enclosures were located near the southern edge of the species’ range. Key Results Mean annual biomass growth of Evernia significantly declined 6 percentage points for every +1°C of experimental warming after accounting for interactions with atmospheric drying. Mean annual biomass growth was 14% in ambient treatments, 2% in unheated control treatments, and −9% to −19% (decreases) in energy‐added treatments ranging from +2.25 to +9.00°C above ambient temperatures. Warming‐induced biomass losses among persistent individuals were suggestive evidence of an extinction debt that could precede further local mortality events. Conclusions Changing patterns of warming and drying would decrease or reverse Evernia growth at its southern range margins, with potential consequences for the maintenance of local and regional populations. Negative carbon balances among persisting individuals could physiologically commit these epiphytes to local extinction. Our findings illuminate the processes underlying local extinctions of epiphytes and suggest broader consequences for range shrinkage if dispersal and recruitment rates cannot keep pace.},
doi = {10.1002/ajb2.1022},
journal = {American Journal of Botany},
number = 2,
volume = 105,
place = {United States},
year = {Mon Feb 26 00:00:00 EST 2018},
month = {Mon Feb 26 00:00:00 EST 2018}
}

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Works referenced in this record:

Tansley Review No. 117: Carbon economy in lichens
journal, October 2000


Potential effects of climate change on canopy communities in a tropical cloud forest: an experimental approach
journal, May 2002


Novel climates, no-analog communities, and ecological surprises
journal, November 2007

  • Williams, John W.; Jackson, Stephen T.
  • Frontiers in Ecology and the Environment, Vol. 5, Issue 9
  • DOI: 10.1890/070037

Attaining whole-ecosystem warming using air and deep-soil heating methods with an elevated CO 2 atmosphere
journal, January 2017

  • Hanson, Paul J.; Riggs, Jeffery S.; Nettles, W. Robert
  • Biogeosciences, Vol. 14, Issue 4
  • DOI: 10.5194/bg-14-861-2017

Lichen community change over a 15-year time period: effects of climate and pollution
journal, January 2013


The lichen-forming ascomycete Evernia mesomorpha associates with multiple genotypes of Trebouxia jamesii
journal, October 2005


Do forests treated by partial cutting provide growth conditions similar to old-growth forests for epiphytic lichens?
journal, March 2013


Influence of plant size on the ecophysiology of the epiphytic fern Asplenium auritum (Aspleniaceae) from Costa Rica
journal, November 2012

  • Testo, Weston L.; Watkins, James E.
  • American Journal of Botany, Vol. 99, Issue 11
  • DOI: 10.3732/ajb.1200329

Epiphytic leafy liverworts diversified in angiosperm-dominated forests
journal, August 2014

  • Feldberg, Kathrin; Schneider, Harald; Stadler, Tanja
  • Scientific Reports, Vol. 4, Issue 1
  • DOI: 10.1038/srep05974

Epiphytes improve host plant water use by microenvironment modification
journal, March 2014

  • Stanton, Daniel E.; Huallpa Chávez, Jackelyn; Villegas, Luis
  • Functional Ecology, Vol. 28, Issue 5
  • DOI: 10.1111/1365-2435.12249

Lichen epiphyte response to non-analogue monthly climates: A critique of bioclimatic models
journal, April 2017

  • Ellis, Christopher J.; Geddes, Harvey; McCheyne, Neil
  • Perspectives in Plant Ecology, Evolution and Systematics, Vol. 25
  • DOI: 10.1016/j.ppees.2017.01.005

A closer look at novel climates: new methods and insights at continental to landscape scales
journal, February 2017

  • Mahony, Colin R.; Cannon, Alex J.; Wang, Tongli
  • Global Change Biology, Vol. 23, Issue 9
  • DOI: 10.1111/gcb.13645

The Effects of Sulphur Dioxide on net co2 Assimilation in the Lichen Evernia Mesomorpha nyl.
journal, August 1985


Disequilibrium vegetation dynamics under future climate change
journal, July 2013

  • Svenning, Jens-Christian; Sandel, Brody
  • American Journal of Botany, Vol. 100, Issue 7
  • DOI: 10.3732/ajb.1200469

The effect of atmospheric desiccation and osmotic water stress on photosynthesis and dark respiration of lichens
journal, October 1990


Local epiphyte establishment and future metapopulation dynamics in landscapes with different spatiotemporal properties
journal, February 2017

  • Belinchón, Rocío; Harrison, Philip J.; Mair, Louise
  • Ecology, Vol. 98, Issue 3
  • DOI: 10.1002/ecy.1686

Comparison of land surface humidity between observations and CMIP5 models
journal, January 2017

  • Dunn, Robert J. H.; Willett, Kate M.; Ciavarella, Andrew
  • Earth System Dynamics, Vol. 8, Issue 3
  • DOI: 10.5194/esd-8-719-2017

Response of non-vascular epiphytes to simulated climate change in a montane moist evergreen broad-leaved forest in southwest China
journal, August 2012


Phylogeny, adaptive radiation, and historical biogeography in Bromeliaceae: Insights from an eight-locus plastid phylogeny
journal, May 2011

  • Givnish, Thomas J.; Barfuss, Michael H. J.; Van Ee, Benjamin
  • American Journal of Botany, Vol. 98, Issue 5
  • DOI: 10.3732/ajb.1000059

Water relations and carbon dioxide exchange of epiphytic lichens in the Namib fog desert
journal, August 2007

  • Lange, Otto L.; Allan Green, T. G.; Meyer, Angelika
  • Flora - Morphology, Distribution, Functional Ecology of Plants, Vol. 202, Issue 6
  • DOI: 10.1016/j.flora.2006.09.006

Local population extinction and vitality of an epiphytic lichen in fragmented old-growth forest
journal, July 2010


Differences in dehydration tolerance among populations of a gametophyte-only fern
journal, April 2017

  • Chambers, Sally M.; Watkins, J. E.; Sessa, Emily B.
  • American Journal of Botany, Vol. 104, Issue 4
  • DOI: 10.3732/ajb.1600279

Photosynthese der W�stenflechte Ramalina maciformis nach Wasserdampfaufnahme aus dem Luftraum
journal, January 1965

  • Lange, O. L.; Bertsch, A.
  • Die Naturwissenschaften, Vol. 52, Issue 9
  • DOI: 10.1007/BF00626480

Influence of Temperature and Humidity on Distribution of Lichens in a Minnesota Bog
journal, July 1969


Long-term responses of the green-algal lichen Parmelia caperata to natural CO 2 enrichment
journal, May 1999


Locally Downscaled and Spatially Customizable Climate Data for Historical and Future Periods for North America
journal, June 2016


Modelling epiphyte metapopulation dynamics in a dynamic forest landscape
journal, April 2005


Effects of high temperature on epiphytic lichens: Issues for consideration in a changing climate scenario
journal, July 2007

  • Pisani, T.; Paoli, L.; Gaggi, C.
  • Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, Vol. 141, Issue 2
  • DOI: 10.1080/11263500701401356

Desiccation-Tolerance in Lichens: A Review
journal, December 2008


Towards Process-based Range Modeling of Many Species
journal, November 2016

  • Evans, Margaret E. K.; Merow, Cory; Record, Sydne
  • Trends in Ecology & Evolution, Vol. 31, Issue 11
  • DOI: 10.1016/j.tree.2016.08.005

Lichen Pendants for Transplant and Growth Experiments
journal, March 1996


Divergence Times and the Evolution of Epiphytism in Filmy Ferns (Hymenophyllaceae) Revisited
journal, November 2008

  • Hennequin, Sabine; Schuettpelz, Eric; Pryer, Kathleen M.
  • International Journal of Plant Sciences, Vol. 169, Issue 9
  • DOI: 10.1086/591983

Further evidence of the effects of global warming on lichens, particularly those with Trentepohlia phycobionts
journal, March 2007


�ber den CO2-Gaswechsel einiger Flechten nach Wasserdampfaufnahme
journal, January 1966


Sunscreening fungal pigments influence the vertical gradient of pendulous lichens in boreal forest canopies
journal, June 2014

  • Färber, Leonie; Solhaug, Knut Asbjørn; Esseen, Per-Anders
  • Ecology, Vol. 95, Issue 6
  • DOI: 10.1890/13-2319.1

Epiphyte metapopulation persistence after drastic habitat decline and low tree regeneration: time-lags and effects of conservation actions
journal, January 2013

  • Johansson, Victor; Ranius, Thomas; Snäll, Tord
  • Journal of Applied Ecology, Vol. 50, Issue 2
  • DOI: 10.1111/1365-2664.12049

Lichen litter decomposition in Nothofagus forest of northern Patagonia: biomass and chemical changes over time
journal, June 2007


Lichen Pendants for Transplant and Growth Experiments
journal, March 1996


Epiphytic leafy liverworts diversified in angiosperm-dominated forests
text, January 2014


Epiphytic leafy liverworts diversified in angiosperm-dominated forests.
text, January 2014


Works referencing / citing this record:

Climatic niche limits and community‐level vulnerability of obligate symbioses
journal, October 2019

  • Smith, Robert J.; Jovan, Sarah; McCune, Bruce
  • Journal of Biogeography, Vol. 47, Issue 2
  • DOI: 10.1111/jbi.13719