Abstract
Abstract
Background
The effects of climate on plant species ranges are well appreciated, but the effects of other processes, such as fire, on plant species distribution are less well understood. We used a dataset of 561 plots 0.1 ha in size located throughout Yosemite National Park, in the Sierra Nevada of California, USA, to determine the joint effects of fire and climate on woody plant species. We analyzed the effect of climate (annual actual evapotranspiration [AET], climatic water deficit [Deficit]) and fire characteristics (occurrence [BURN] for all plots, fire return interval departure [FRID] for unburned plots, and severity of the most severe fire [dNBR]) on the distribution of woody plant species.
Results
Of 43 species that were present on at least two plots, 38 species occurred on five or more plots. Of those 38 species, models for the distribution of 13 species (34%) were significantly improved by including the variable for fire occurrence (BURN). Models for the distribution of 10 species (26%) were significantly improved by including FRID, and two species (5%) were improved by including dNBR. Species for which distribution models were improved by inclusion of fire variables included some of the most areally extensive woody plants. Species and ecological zones were aligned along an AET-Deficit gradient from cool and moist to hot and dry conditions.
Conclusions
In fire-frequent ecosystems, such as those in most of western North America, species distribution models were improved by including variables related to fire. Models for changing species distributions would also be improved by considering potential changes to the fire regime.
Publisher
Springer Science and Business Media LLC
Subject
Environmental Science (miscellaneous),Ecology, Evolution, Behavior and Systematics,Forestry
Reference68 articles.
1. Airey Lauvaux, C., C.N. Skinner, and A.H. Taylor. 2016. High severity fire and mixed conifer forest-chaparral dynamics in the southern Cascade Range, USA. Forest Ecology and Management 363: 74–85 https://doi.org/10.1016/j.foreco.2015.12.016.
2. Becker, K.M.L., and J.A. Lutz. 2016. Can low-severity fire reverse compositional change in montane forests of the Sierra Nevada, California, USA? Ecosphere 7 (12): e01484 https://doi.org/10.1002/ecs2.1484.
3. Blomdahl, E.M., C.A. Kolden, A.J.H. Meddens, and J.A. Lutz. 2019. The importance of small fire refugia in the central Sierra Nevada, California, USA. Forest Ecology and Management 432: 1041–1052 https://doi.org/10.1016/j.foreco.2018.10.038.
4. Botti, S.J. 2001. An illustrated flora of Yosemite National Park. Yosemite National Park, California, USA: Yosemite Association.
5. Burnham, K.P., and D.R. Anderson. 2002. Model selection and inference: a practical information-theoretic approach. 2nd ed. New York, New York, USA: Springer-Verlag.
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