The file Desharnais_et_al_Tribolium_synchrony_data.csv contains the experimental data for the following paper: Desharnais,R.A., Reuman, D.C., Costantino, R.F., Joel, J.E. 2018. Temporal scale of environmental correlations affects ecological synchrony. Ecology Letters (accepted). Refer to the original publication for details on the experimental protocol and data collection. Overall experimental design: The experimental unit was a metapopulation composed of two vials of flour beetles. Different pairs of vials were manipulated in different ways according to two crossed experimental factors: habitat size fluctuations and adult dispersal. The two levels of the habitat fluctuation factor were imposed with paired random flour volume sequences that were generated to be (1) positively correlated on long timescales (low frequencies) and negatively correlated on short timescales (high frequencies), herein denoted as Low+/High- or (2) positively correlated on short timescales and negatively correlated on long timescales, herein High+/Low . How the habitat sequences were generated is described in the paper. The two levels of adult dispersal were (1) no dispersal, or (2) a reciprocal exchange of 25% of the adults between populations at each census. There were three replicates for each of the four treatment groups to yield 12 experimental metapopulations containing 24 paired laboratory cultures. Experimental data: The data are saved a comma separated values. Each row contains an observation for the census of one replicate (pair of vials) at one point in time. Variable names appear in the first row and are explained below. dispersal - rate of adult dispersal (0 or 0.25) noise - habitat regime for paired populations (0 = Low+/High-, 1 = High+/Low-) replic - replictate number (1, 2, 3, ..., 12) time - time period of census (0, 1, 2, ..., 40) in two week intervals V1 - grams of flour placed into first vial after the census V2 - grams of flour placed into second vial after the census L1 - number of L-stage insects returned to the first vial after the census P1 - number of P-stage insects returned to the first vial after the census A1 - number of A-stage insects returned to the first vial after the census L2 - number of L-stage insects returned to the second vial after the census P2 - number of P-stage insects returned to the second vial after the census A2 - number of A-stage insects returned to the second vial after the census