Ecological Archives E093-041-A1

Timothy C. Bonebrake and Curtis A. Deutsch. 2012. Climate heterogeneity modulates impact of warming on tropical insects. Ecology 93:449–455.

Appendix D. A first approximation of the relationship between diurnal temperature range and insect physiology.

Table D1. Linear regression coefficients and statistics relating diurnal temperature range (DTR) and seasonality (σT) to insect warming tolerance (WT) and thermal safety margins (TSM) globally.

Regression R² d.f. Variable Slope P
log(WT) vs. vs. DTR 0.47 36 0.18 ± 0.03 < 0.001
DTR 0.01 ± 0.01 0.46
TSM vs. vs. DTR 0.47 36 1.00 ± 0.17 < 0.001
DTR 0.03 ± 0.05 0.55

Fig. D1. Diurnal temperature range (DTR) globally from CRU TS3.0. Globally, DTR appears related to elevation but multiple factors contribute to DTR patterns including cloud cover, temperature and the atmospheric environment (Meehl et al. 2007). Further study is required to determine the influence of DTR on physiology and adaptation globally.

Literature Cited

Meehl, G.A., et al. 2007. Global climate projections. Pages 747-846. in S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor, and H.L. Miller editors. Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, UK and New York, NY, USA.

[Back to E093-041]