No abstract

At very high levels of stress, plant performances become too weak to allow either competition or facilitation and disturbance may accelerate the collapse of interactions in dry conditions. The results suggest that the importance and direction of interactions are more likely to be positively related in stressful environments.

The soils and native vegetation of 28 Outstanding changes in plant species across two phases of the Festuca zone and a high soil"organi"c carbon g.idi"trt through the Black soils appeared to be a result of a high negative mein minimum temperature gradient which accounts for a high P/E ratio gradient.

No abstract