Organic matter dynamics control plant species coexistence in a tropical peat swamp forest by Dr. T Shimamura and Dr. K Momose (rspb.2005.3095)
We studied the relationships between the coexistence of tree species and the dynamics of organic matter in forests. A tropical peat swamp forest was selected as a model ecosystem, where biological processes create habitat heterogeneity. According to our new model based on our field experiments, the death and growth of some influential tree species affect some important variables of organic matter dynamics and change the conditions on the forest floor. Many tree species respond different to these conditions. Thus, we revealed that the spatial and temporal fluctuations of variables in organic matter dynamics, contribute to the coexistence of plant species.
Contact: Dr. T Shimamura, Laboratry of Forest Hydrology, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, KYOTO-CITY, 606-8502, Japan
Speciation: more likely through a genetic or through a learned habitat preference? By Professor JAJ Metz and Mr JB Beltman (rspb.2005.3104)
Individuals prefer environments specific to their species. This preference can be genetic, whereas in other cases individuals prefer the habitat of their youth. Habitat preferences can assist the formation of two species out of one as it fosters matings between individuals specialised on the same environment. The paper considers a model where initially an unspecialised species equally exploits two different habitats. During the forma
Contact: Tim Watson