New in the Literature

Interesting articles from this month's batch of journals:

• "Changes in light and nitrogen availability under pioneer trees may indirectly facilitate tree invasions of grasslands." by Evan Siemann and William E. Rogers. 2003. Journal of Ecology. v. 91(6), p. 923. - Invasive Chinese tallow tree (Sapium sebiferum) vs. native Hackberry (Celtis laevigata)
• "Plant-soil biota interactions and spatial distribution of black cherry in its native and invasive ranges." by Kurt O. Reinhart, Alissa Packer, Wim H. Van der Putten and Keith Clay. 2003. Ecology Letters. v. 6(12), p. 1046. - Enemy release hypothesis and Prunus serotina.
• "Invasion dynamics of two alien Carpobrotus (Aizoaceae) taxa on a Mediterranean island: I. Genetic diversity and introgression." by C. M. Suehs, L. Affre and F. M�dail. 2003. Heredity. Advanced online publication.