Response of North American ecosystem models to multi-annual periodicities in temperature and precipitation

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dc.contributor.authorYeakley, J.Alan
dc.contributor.authorMoen, Ron A.
dc.contributor.authorBreshears, David D.
dc.contributor.authorNungesser, Martha K.
dc.date.accessioned2020-06-19T17:33:35Z
dc.date.available2020-06-19T17:33:35Z
dc.description.abstractEcosystem models typically use input temperature and precipitation data generated stochastically from weather station means and variances. Although the weather station data are based on measurements taken over a few decades, model simulations are usually on the order of centuries. Consequently, observed periodicities in temperature and precipitation at the continental scale that have been correlated with largscale forcings, such as ocean-atmosphere dynamics and lunar and sunspot cycles, are ignored. We investigated how these natural climatic fluctuations affect aboveground biomass in ecosystem models by incorporating some of the more pronounced continental-scale cycles in temperature (4, 11, 80, 180 year periods) and precipitation (11 and 19 year periods) into models of three North American forests (using LINKAGES) and one North American grassland (using STEPPE). Even without inclusion of periodicities in climate, long-term dynamics of these models were characterized by internal frequencies resulting from vegetation birth, growth and death processes. Our results indicate that long-term temperature cycles result in significantly lower predictions of forest biomass than observed in the control case for a forest on a biome transition (northern hardwoods/boreal forest). Lower-frequency, higher-amplitude temperature oscillation caused amplification of forest biomass response in forests containing hardwood species. Shortgrass prairie and boreal ecosystems, dominated by species with broad stress tolerance ranges, were relatively insensitive to climatic oscillations. Our results suggest periodicities in climate should be incorporated within long-term simulations of ecosystems with strong internal frequencies, particularly for systems on biome transitions.en_US
dc.description.sponsorshipThis work originated as an inter-university graduate student project at the Clowes Ecosystem Modeling Workshop, November, 1990, organized by Jerry Melillo and Ed Rastetter at the Ecosystem Center, Marine Biological Laboratory, Woods Hole, Massachusetts. In addition, we acknowledge Bill Lauenroth, John Pastor and Hank Shugart for support, consultation and patience in allowing us to conduct this work concurrently with our respective dissertation efforts. We further acknowledge helpful comments from Debra Coffin, Yosef Cohen, Bruce Hayden, Tom Kirchner, Robert Scheller, Dean Urban and two anonymous reviewers. Partial funding support for the authors during this project was provided by the Coweeta LTER, Los Alamos National Environmental Research Park, NASA, NSF-BSR, and USDA-Forest Service.en_US
dc.description.urihttps://link.springer.com/article/10.1007%2FBF00129236en_US
dc.format.extent13 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2ei9c-xbec
dc.identifier.citationYeakley, J.A., Moen, R.A., Breshears, D.D. et al. Response of North American ecosystem models to multi-annual periodicities in temperature and precipitation. Landscape Ecol 9, 249–260 (1994). https://doi.org/10.1007/BF00129236en_US
dc.identifier.urihttps://doi.org/10.1007/BF00129236
dc.identifier.urihttp://hdl.handle.net/11603/18939
dc.language.isoen_USen_US
dc.publisherSpringer Natureen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Geography and Environmental Systems Department Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleResponse of North American ecosystem models to multi-annual periodicities in temperature and precipitationen_US
dc.typeTexten_US

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