• Medientyp: E-Artikel
  • Titel: Density-dependent adult recruitment in a low-density tropical tree
  • Beteiligte: Kellner, James R.; Hubbell, Stephen P.
  • Erschienen: Proceedings of the National Academy of Sciences, 2018
  • Erschienen in: Proceedings of the National Academy of Sciences
  • Sprache: Englisch
  • DOI: 10.1073/pnas.1800353115
  • ISSN: 0027-8424; 1091-6490
  • Schlagwörter: Multidisciplinary
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:title>Significance</jats:title> <jats:p>An important class of negative feedbacks in population dynamics is the activity of host-specific enemies that disproportionately kill individuals in locations where they are common. This mechanism, called the Janzen–Connell hypothesis, has been proposed as a determinant of the large number of species in tropical forests. A critical but untested assumption of the hypothesis is that density-dependent mortality among juvenile trees reduces the probability of adult recruitment. Here, we show that adult recruitment is negatively density dependent in a low-density tree population using time series from high-resolution remote sensing. However, this density dependence was not strong enough to stabilize the size of the adult population, which increased significantly in size.</jats:p>
  • Zugangsstatus: Freier Zugang