Data from: 100-year time-series reveal little morphological change following impoundment and predator invasion in two Neotropical characids

Ilke Geladi, Luis Fernando De León, Mark Torchin, Andrew Hendry, Rigoberto Gonzalez & Diana Sharpe
Human activities are dramatically altering ecosystems worldwide, often resulting in shifts in selection regimes. In response, natural populations sometimes undergo rapid phenotypic changes, which if adaptive, can increase their probability of persistence. However, in many instances, populations fail to undergo any phenotypic change, which might indicate a variety of possibilities, including maladaptation. In freshwater ecosystems, the impoundment of rivers and the introduction of exotic species are among the leading threats to native fishes. We examined...
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