Overzicht van de in het arboretum Belmonte in Wageningen gekweekte Sorbusplanten. Uitgebreide beschrijving van de namen van soorten, variëteiten, apomicten of in het wild voorkomende hybriden worden gevolgd door de auteursnaam en een verwijzing naar de eerste publikatie van de naam.
Published in Proceedings of the National Academy of Sciences of the United States of America
Current theory predicts a distinct upper limit on the permissible degree of niche overlap; moreover, theory suggests that maximal tolerable overlap should be relatively insensitive to environmental variability. Data presented here demonstrate that, within the lizard subset of natural desert communities, niche overlap decreases both with increasing ...
Published in Proceedings of the National Academy of Sciences of the United States of America
Nonasymptotic models of species diversity are those that do not consider negative feedback between number of species in a biota and the net rate of species addition. These models propose species richness differences to be primarily the product of geologic age differences among biotas. Nonasymptotic explanations are traditional for various diversity...
International audience
Ce travail est une contribution à la connaissance des forêts sèches et semi-décidues de Côte d'Ivoire, mais s'intègre aussi dans la problématique plus générale du contact forêt-savane. Il est fondé sur l'étude de deux sites ; le plus septentrional, en savane soudanienne, est sous l'influence d'un climat tropical à deux saisons ; le plus méridional,...
Published in Journal of nematology
Seven species of plant parasitic nematodes were found to be associated with leatherleaf fern (Rumohra adiantiformis) in central Florida. Of these, Pratylenchus penetrans, Tylenchorhynchus claytoni, and Criconemoides curvatum were commonly encountered. Nematode communities generally included two or three species of plant parasitic nematodes, with gr...
Published in Evolution; international journal of organic evolution
One tool in the study of the forces that determine species diversity is the null, or simple, model. The fit of predictions to observations, good or bad, leads to a useful paradigm or to knowledge of forces not accounted for, respectively. It is shown how simple models of speciation and extinction lead directly to predictions of the structure of phy...
Regeneration response after prescribed burning, cutting and uprooting in experimental heatland plots dominated by Erica autralis subsp. aragonensis, was studied. The highest percentage cover of annual species was observed two years after the treatment. From that moment the therophytes tended to decrease and were replaced by perennial species natura...
