991 resultados para Blake, Jeremiah, 1800-1890.
Resumo:
von B. Wissoker
Resumo:
von M. Silberstein
Resumo:
nuove ricerche del G. Jarè
Resumo:
Phenotypic differences among closely related populations and species can cause contrasting effects on ecosystems; however, it is unknown whether such effects result from genetic divergence, phenotypic plasticity, or both. To test this, we reared sympatric limnetic and benthic species of whitefish from a young adaptive radiation in a common garden, where the benthic species was raised on two distinct food types. We then used these fish in a mesocosm experiment to test for contrasting ecosystem effects of closely related species and of plastically induced differences within a species. We found that strong contrasting ecosystem effects resulted more frequently from genetic divergence, although they were not stronger overall than those resulting from phenotypic plasticity. Overall, our results provide evidence that genetically based differences among closely related species that evolved during a young adaptive radiation can affect ecosystems, and that phenotypic plasticity can modify the ecosystem effects of such species.
Resumo:
Digitalisat der Ausg. Wien, [circa] 1890
Resumo:
Fingierter Hauptsachtitel. Sammelmappe mit Original-Zeitungsausschnitten überw. aus der Frankfurter und internationalen Presse
Resumo:
Moritz Steinschneider
Resumo:
Ismail Gentz
Resumo:
Ismail Gentz
Resumo:
Scan von Monochrom-Mikroform
