Caya Sievers

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The extent to which biodiversity change in local assemblages contributes to global biodiversity loss is poorly understood. We analyzed 100 time series from biomes across Earth to ask how diversity within assemblages is changing through time. We quantified patterns of temporal α diversity, measured as change in local diversity, and temporal β diversity,(More)
We present new data and analyses revealing fundamental flaws in a critique of two recent meta-analyses of local-scale temporal biodiversity change. First, the conclusion that short-term time series lead to biased estimates of long-term change was based on two errors in the simulations used to support it. Second, the conclusion of negative relationships(More)
The introduction of non-native species into new habitats poses a major threat to native populations. Of particular interest, though often overlooked, are introductions of populations that are not fully reproductively isolated from native individuals and can hybridize with them. To address this important topic we used different approaches in a multi-pronged(More)
References and Notes 1. B. J. Finlayson-Pitts, J. N. Pitts, Chemistry of the Upper and Lower Atmosphere: Theory, Experiments and Applications (Academic Press, San Diego, 2000), first ed. 2. A. Hofzumahaus et al., Science 324, 1702–1704 (2009). 3. U. Platt, D. Perner, G. W. Harris, A. M. Winer, J. N. Pitts Jr., Nature 285, 312–314 (1980). 4. B. Alicke et(More)
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