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dc.contributor.authorDiamond, Sarah E.
dc.contributor.authorPenick, Clint
dc.contributor.authorPelini, Shannon L.
dc.contributor.authorEllison, Aaron M.
dc.date.accessioned2013-10-08T15:02:54Z
dash.embargo.terms2014-06-18
dc.date.issued2013-10-08
dc.identifierQuick submit: 2013-06-14T14:40:18-04:00
dc.identifier.citationSarah E. Diamond, Clint Penick, Shannon L. Pelini, Aaron M. Ellison, Nicholas J. Gotelli, Nathan J. Sanders, Robert R. Dunn. Forthcoming. Using physiology to predict the responses of ants to climatic warming. Integrative and Comparative Biology.en_US
dc.identifier.issn1557-7023en_US
dc.identifier.issn1540-7063en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:11148824
dc.description.abstractPhysiological intolerance of high temperatures places limits on organismal responses to the temperature increases associated with global climatic change. Because ants are geographically widespread, ecologically diverse, and thermophilic, they are an ideal system for exploring the extent to which physiological tolerance can predict responses to environmental change. Here we expand on simple models that use thermal tolerance to predict the responses of ants to climatic warming. We investigated the degree to which changes in the abundance of ants under warming reflect reductions in the thermal niche space for their foraging. In an eastern deciduous forest system in the United States with ~40 ant species, we found that for some species, the loss of thermal niche space for foraging was related to decreases in abundance with increasing experimental climatic warming. However, many ant species exhibited no loss of thermal niche space. For one well-studied species, Temnothorax curvispinosus, we examined both survival of workers and growth of colonies (a correlate of reproductive output) as functions of temperature in the laboratory, and found that the range of thermal tolerances for colony growth was much narrower than for survival of workers. We evaluated these functions in the context of experimental climatic warming and found that the difference in the responses of these two attributes to temperature generates differences in the means and especially the variances of expected fitness under warming. The expected mean growth of colonies was optimized at intermediate levels of warming (2 – 4 °C above ambient), yet the expected variance monotonically increased with warming. In contrast, the expected mean and variance of the survival of workers decreased when warming exceeded 4°C above ambient. Together, these results for T. curvispinosus emphasize the importance of measuring reproduction (colony growth) in context of climatic change: indeed, our examination of the loss of thermal niche space with the larger species pool could be missing much of the warming impact due to these analyses being based on survival rather than reproduction. We suggest that while physiological tolerance of temperature can be a useful predictive tool for modeling responses to climatic change, future efforts should be devoted to understanding the causes and consequences of variability in models of tolerance calibrated with different metrics of performance and fitness.en_US
dc.description.sponsorshipOrganismic and Evolutionary Biologyen_US
dc.description.sponsorshipOther Research Uniten_US
dc.language.isoen_USen_US
dc.publisherOxford University Pressen_US
dc.relation.isversionofdoi:10.1093/icb/ict085en_US
dash.licenseLAA
dc.subjectantsen_US
dc.subjectclmate changeen_US
dc.subjectfitness componentsen_US
dc.subjectniche lossen_US
dc.subjecttemperatureen_US
dc.subjectthermal toleranceen_US
dc.titleUsing Physiology to Predict the Responses of Ants to Climatic Warmingen_US
dc.typeJournal Articleen_US
dc.date.updated2013-06-14T18:40:36Z
dc.description.versionAccepted Manuscripten_US
dc.rights.holderSE Diamond, C Penick, SL Pelini, AM Ellison, NJ Gotelli, NJ Sanders, RR Dunn
dc.relation.journalIntegrative and Comparative Biologyen_US
dash.depositing.authorEllison, Aaron M.
dc.date.available2014-06-18T07:30:41Z
dc.identifier.doi10.1093/icb/ict085*
workflow.legacycommentsIn QSDB.en_US
dash.contributor.affiliatedEllison, Aaron
dc.identifier.orcid0000-0003-4151-6081


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